HP LaserJet 3050/3052/3055 All-in-One Service Manual
HP LaserJet 3050/3052/3055 All-in-One Service Manual
Copyright and License Trademark Credits © 2006 Copyright Hewlett-Packard Development Company, LP Adobe Photoshop® and PostScript® are trademarks of Adobe Systems Incorporated. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. Corel® is a trademark or registered trademark of Corel Corporation or Corel Corporation Limited. The information contained in this document is subject to change without notice. Linux is a U.S.
Table of contents 1 Product information All-in-one configurations ....................................................................................................................... 2 HP LaserJet 3050 all-in-one ................................................................................................ 2 HP LaserJet 3052/3055 all-in-one ....................................................................................... 3 All-in-one features .....................................................
To remove software from Macintosh operating systems ................................... 20 Choosing paper and other print media ............................................................................................... 21 Supported media weights and sizes .................................................................................. 21 Media to avoid ...................................................................................................................
Fax logs and reports ......................................................................................... 52 HP ToolboxFX ................................................................................................................... 53 To view HP ToolboxFX ..................................................................................... 53 Status ................................................................................................................ 54 Event log .......................
Printer (product base) functions ......................................................................................................... 74 Engine control system (engine control unit and power-supply assembly) ......................... 75 Print-engine control system ............................................................................... 75 Printer (product base) laser/scanner ................................................................. 76 Power system on the power-supply assembly ............
Electrostatic discharge ..................................................................................................... 100 Required tools .................................................................................................................. 101 Before performing service ................................................................................................ 101 After performing service ................................................................................................
Main motor ....................................................................................................................... 190 Fuser ................................................................................................................................ 192 Paper-pickup assembly ................................................................................................... 194 6 Troubleshooting Troubleshooting process ......................................................................
Secondary service menu ................................................................................................. 251 To gain access to the secondary service menu .............................................. 251 To print a list of all the fax data-store parameters ........................................... 251 Developer’s menu ............................................................................................................ 252 To gain access to the developer’s menu .....................
HP LaserJet 3052/3055 all-in-one scanner assembly ...................................................................... 306 Major assemblies, HP LaserJet 3052/3055 all-in-one ..................................................... 308 Scanner components, HP LaserJet 3052/3055 all-in-one ............................................... 310 Printer (product base), HP LaserJet 3050/3052/3055 all-in-one ...................................................... 314 External covers, printer (product base) ............
Laser safety statement .................................................................................................... 366 Canadian DOC statement ................................................................................................ 366 Korean EMI statement ..................................................................................................... 366 Finnish laser statement ....................................................................................................
xii ENWW
List of tables Table 1-1 Priority input slot specifications, HP LaserJet 3050/3052/3055 all-in-one ....................................... 21 Table 1-2 Media input tray (tray 1) specifications, HP LaserJet 3050/3052/3055 all-in-one ............................ 22 Table 1-3 ADF specifications, HP LaserJet 3050 all-in-one ............................................................................. 22 Table 1-4 ADF specifications, HP LaserJet 3052/3055 all-in-one .............................................
Table 7-19 Table 7-20 Table 7-21 Table 7-22 Table A-1 Table A-2 Table A-3 Table A-4 Table A-5 Table A-6 xiv Internal components, printer (product base) (2 of 3) .................................................................... 323 Internal components, printer (product base) (3 of 3) .................................................................... 325 Alphabetical parts list ...................................................................................................................
List of figures Figure 1-1 Figure 2-1 Figure 2-2 Figure 2-3 Figure 2-4 Figure 3-1 Figure 4-1 Figure 4-2 Figure 4-3 Figure 4-4 Figure 4-5 Figure 4-6 Figure 4-7 Figure 4-8 Figure 4-9 Figure 4-10 Figure 4-11 Figure 4-12 Figure 4-13 Figure 4-14 Figure 4-15 Figure 5-1 Figure 5-2 Figure 5-3 Figure 5-4 Figure 5-5 Figure 5-6 Figure 5-7 Figure 5-8 Figure 5-9 Figure 5-10 Figure 5-11 Figure 5-12 Figure 5-13 Figure 5-14 Figure 5-15 Figure 5-16 Figure 5-17 Figure 5-18 Figure 5-19 ENWW HP LaserJet 3050/3052/3055 all-i
Figure 5-20 Figure 5-21 Figure 5-22 Figure 5-23 Figure 5-24 Figure 5-25 Figure 5-26 Figure 5-27 Figure 5-28 Figure 5-29 Figure 5-30 Figure 5-31 Figure 5-32 Figure 5-33 Figure 5-34 Figure 5-35 Figure 5-36 Figure 5-37 Figure 5-38 Figure 5-39 Figure 5-40 Figure 5-41 Figure 5-42 Figure 5-43 Figure 5-44 Figure 5-45 Figure 5-46 Figure 5-47 Figure 5-48 Figure 5-49 Figure 5-50 Figure 5-51 Figure 5-52 Figure 5-53 Figure 5-54 Figure 5-55 Figure 5-56 Figure 5-57 Figure 5-58 Figure 5-59 Figure 5-60 Figure 5-61 Figure 5
Figure 5-70 Figure 5-71 Figure 5-72 Figure 5-73 Figure 5-74 Figure 5-75 Figure 5-76 Figure 5-77 Figure 5-78 Figure 5-79 Figure 5-80 Figure 5-81 Figure 5-82 Figure 5-83 Figure 5-84 Figure 5-85 Figure 5-86 Figure 5-87 Figure 5-88 Figure 5-89 Figure 5-90 Figure 5-91 Figure 5-92 Figure 5-93 Figure 5-94 Figure 5-95 Figure 5-96 Figure 5-97 Figure 5-98 Figure 5-99 Figure 5-100 Figure 5-101 Figure 5-102 Figure 5-103 Figure 5-104 Figure 5-105 Figure 5-106 Figure 5-107 Figure 5-108 Figure 5-109 Figure 5-110 Figure 5-
Figure 5-120 Removing the power supply (5 of 5) ......................................................................................... 177 Figure 5-121 Removing the formatter (1 of 3) ................................................................................................ 178 Figure 5-122 HP LaserJet 3050 all-in-one formatter and LIU ........................................................................ 179 Figure 5-123 HP LaserJet 3052 all-in-one formatter .....................................
1 ENWW Product information ● All-in-one configurations ● All-in-one features ● All-in-one parts ● Software installation ● Choosing paper and other print media 1
All-in-one configurations The all-in-one is available in the following configurations. HP LaserJet 3050 all-in-one HP LaserJet 3050 all-in-one printer, fax, copier, scanner 2 Chapter 1 Product information ● Prints letter-size pages at speeds up to 19 pages per minute (ppm) and A4-size pages at speeds up to 18 ppm ● PCL 5e and PCL 6 printer drivers and HP postscript level 3 emulation. ● The priority input slot holds up to 10 pages. ● Tray 1 holds up to 250 sheets of print media or 10 envelopes.
HP LaserJet 3052/3055 all-in-one HP LaserJet 3052 all-in-one printer, scanner, copier ● Prints letter-size pages at speeds up to 19 ppm and A4size pages at speeds up to 18 ppm ● PCL 5e and PCL 6 printer drivers and HP postscript level 3 emulation ● The priority input slot holds up to 10 pages. ● Tray 1 holds up to 250 sheets of print media or 10 envelopes. ● Average yield for the standard black print cartridge is 2,000 pages in accordance with ISO/IEC 19752; actual yield depends on specific use.
All-in-one features Excellent print quality Fax (HP LaserJet 3050 allin-one and HP LaserJet 3055 all-in-one only) ● 1200 dots per inch (dpi) with Image REt 2400 text and graphics ● Adjustable settings to optimize print quality ● The HP UltraPrecise print cartridge has a finer toner formulation that provides sharper text and graphics. ● Full-functionality fax capabilities with a V.34 fax; includes a phone book, fax polling, and delayed-fax features For more information, see the online user guide.
All-in-one parts Before using the all-in-one, familiarize yourself with its parts.
Back view 10 11 9 12 9 Interface ports 10 Security-lock slot 11 Power switch 12 Power receptacle Interface ports 1 2 6 1 Hi-Speed USB 2.
Control panel 1 ENWW 2 3 4 5 1 Fax controls. Use the fax controls to change commonly used fax settings. For information about using the fax controls, see the online user guide. 2 Alphanumeric buttons. Use the alphanumeric buttons to type data into the all-in-one control-panel display and dial telephone numbers for faxing. For information about using alphanumeric key characters, see the online user guide. 3 Menu and cancel controls.
HP LaserJet 3052/3055 all-in-one parts Front view 4 5 3 6 2 7 1 1 Media input tray (tray 1) 2 Priority input slot 3 Output bin 4 Automatic document feeder (ADF) input tray 5 ADF output bin 6 Control panel NOTE The control panel for the HP LaserJet 3055 all-in-one, with fax controls, is shown. The control panel for the HP LaserJet 3052 all-in-one does not have fax controls.
Back view 9 10 11 8 8 Interface ports 9 Security-lock slot 10 Power switch 11 Power receptacle Interface ports The HP LaserJet 3052/3055 all-in-one has two interface ports: a 10/100Base-T (RJ-45) network port and a Hi-Speed USB 2.0 port. The HP LaserJet 3055 all-in-one also has fax ports. 1 2 3 ENWW 1 Network port 2 Hi-Speed USB 2.
Control panel 1 10 2 3 4 5 1 Fax controls (HP LaserJet 3055 all-in-one only; the HP LaserJet 3052 all-in-one does not have fax controls). Use the fax controls to change commonly used fax settings. For information about using the fax controls, see the online user guide. 2 Alphanumeric buttons. Use the alphanumeric buttons to type data into the all-in-one control-panel display and dial telephone numbers for faxing. For information about using alphanumeric key characters, see the online user guide.
Model and serial numbers An identification label is located on the back of the all-in-one. This label contains the model and serial numbers. The serial number contains information about the country/region of origin, revision level, production code, and production number of the all-in-one. The label also contains power-rating and regulatory information. HEWLETT-PACKARD Numero reglementaire du modele 11311 CHINDEN BLVD.
Software installation If the computer meets the recommended minimum requirements, you have two options when installing the software from the CDs that came with the all-in-one.
Printer drivers The all-in-one comes with software that allows the computer to communicate with the all-in-one (by using a printer language). This software is called a printer driver. Printer drivers provide access to allin-one features, such as printing on custom-sized paper, resizing documents, and inserting watermarks. Supported printer drivers The following printer drivers are provided for the all-in-one. If the printer driver that you want is not on the all-in-one CD or is not available on www.hp.
Select the correct printer driver Select a printer driver based on the operating system in use and the way that all-in-one is used. See the printer-driver Help for more information. ● The PCL 6 printer driver can provide the best overall performance and access to the all-in-one features. ● The PCL 5 printer driver is recommended for general office monochrome and color printing.
Gaining access to the printer drivers Use one of the following methods to open the printer drivers from the computer: Operating System To change the settings for all print jobs until the software program is closed To change the print job default To change the configuration settings (for example, turn on settings (for example, add a Print on Both Sides by default) tray or enable/disable Manual Duplexing) Windows 98 and Windows Me 1. On the File menu in the software program, click Print. 1.
Software for Windows When you install the software for Windows, you can directly connect the all-in-one to a computer by using a USB cable, or you can connect the all-in-one to the network (HP LaserJet 3052/3055 all-in-one only) by using the internal print server. See the getting started guide for installation instructions, and see the readme file for the latest software information.
ENWW 3. Scroll through the list of software programs and click HP LaserJet 3050/3052/3055 all-in-one. 4. Click Remove.
Software for Macintosh For Mac OS X V10.3 and Mac OS X V10.4, use Print Center to print. The all-in-one includes the following software for Macintosh computers. NOTE For Macintosh computers, HP ToolboxFX is not supported. HP Director HP Director is a software program that is used when working with documents.
To view Macintosh Configure Device when the all-in-one is connected to a network 1. 2. Open one of the following supported Web browsers: ● Safari 1.2 or later ● Microsoft Internet Explorer 5.0 or later ● Netscape Navigator 4.75 or later ● Opera 6.05 or later Type the IP address of the all-in-one into the Web browser to open the Macintosh Configure Device home page. PDEs (Mac OS X V10.3 and Mac OS X V10.
Installing Macintosh printing system software for networks To install printer drivers for Mac OS X V10.3 and Mac OS X V10.4 1. Connect the network cable between the HP LaserJet 3052/3055 all-in-one and a network port. 2. Insert the CD into the CD-ROM drive, and then double-click the CD icon on the desktop. 3. Double-click the Installer icon in the HP LaserJet Installer folder. 4. Follow the HP all-in-one setup assistant instructions on the computer screen.
Choosing paper and other print media The HP LaserJet all-in-one produces documents that have excellent print quality. You can print on a variety of media, such as paper (including up to 100% recycled fiber content paper), envelopes, labels, transparencies, and custom-size media. Properties such as weight, grain, and moisture content are important factors that affect performance and quality. To achieve the best possible print quality, only use high-quality media that is designed for laser printers.
Table 1-2 Media input tray (tray 1) specifications, HP LaserJet 3050/3052/3055 all-in-one Media Dimensions1 Weight Capacity2 Minimum size 76 x 127 mm (3.0 x 5.0 inches) 60 to 163 g/m2 (16 to 43 lb) Maximum size 216 x 356 mm (8.5 x 14 inches) 250 sheets of 80 g/m2 or 20 lb paper Letter 216 x 279 mm (8.5 x 11 inches) A4 210 x 297 mm (8.3 x 11.7 inches) Legal 216 x 356 mm (8.5 x 14 inches) 16K (195 x 270 mm) 195 x 270 mm (7.7 x 10.6 inches) 16K (7.75 x 10.75 inch) 197 x 273 mm (7.8 x 10.
NOTE When faxing, copying, or scanning using the HP LaserJet 3052/3055 all-in-one, use the flatbed scanner if the original is fragile, thin, thick, too small for the ADF, or a photograph. Also use the flatbed scanner for the fit-to-page copying feature. The flatbed scanner provides the best fax, copy, and scan resolution. Media to avoid The all-in-one can handle many types of media. Using media that is outside the specifications degrades print quality and increases the chance of jams occurring.
24 Chapter 1 Product information ENWW
2 ENWW Operation ● Site preparation ● Unpacking ● Installing input devices ● Installing the print cartridge ● Loading media into the input trays 25
Site preparation Prepare the location Place the all-in-one on a sturdy, level surface in a well-ventilated area. Make sure that the air vents are not blocked and all doors can open freely. Operating environment Place the product on a sturdy, level surface in a well-ventilated area that meets the following environmental requirements: ● Temperature (operating): 15° to 32.5°C (59° to 90.
Minimum system requirements ENWW ● Windows® 2000 ● Windows XP ● Windows Millennium Edition (Me) ● Windows Server 2000 ● Windows 98 ● Mac OS X V10.
Unpacking Contents of the HP LaserJet 3050 all-in-one box A new HP LaserJet 3050 all-in-one printer, fax, copier, scanner should contain all of the items shown in Figure 2-3 HP LaserJet 3050 all-in-one box contents on page 28.
Contents of the HP LaserJet 3052/3055 all-in-one box A new HP LaserJet 3052 all-in-one printer, scanner, copier or HP LaserJet 3055 all-in-one printer, fax, copier, scanner should contain all of the items shown in Figure 2-4 HP LaserJet 3052/3055 all-in-one box contents on page 29.
Installing input devices To install the media input tray 1. Remove any shipping tape from the inside and outside of the tray. 2. Slide the tray in until it fits securely. To install the output bin support 1. Insert the pin on one side of the support into the hole in the all-in-one. 2. Flex the pin on the other side inward, and insert it into the hole. 1 2 To install the ADF output support (HP LaserJet 3050 all-in-one only) 1.
2. Flex the pin on the other side inward, and insert it into the hole. To install the automatic document feeder (ADF) input tray 1. Align the two tabs on the input tray with the two grooves in the ADF lid. 2. Slide the tray into the grooves until the tray snaps into place.
Installing the print cartridge To install the print cartridge 1. Press the cartridge-door release to open the print-cartridge door. HP LaserJet 3050 32 HP LaserJet 3052/3055 2. Remove the print cartridge from its packaging, and then rock the cartridge gently five or six times. 3. Bend the plastic tab at the end of the cartridge. 4. Pull the tab until all of the sealing tape is removed from the cartridge.
5. Hold the print cartridge by the handle and insert it into the all-in-one and then close the printcartridge door. CAUTION If toner gets on your clothing, wipe the toner off with a clean cloth, and then wash the items in cold water and air dry them. Hot water or heat from a dryer sets the toner in the fabric. NOTE Hewlett-Packard Company cannot recommend using non-HP print cartridges, whether they are new, refilled, or remanufactured.
Loading media into the input trays The following sections describe how to load media into the different input trays. CAUTION Printing on wrinkled, folded, or damaged media can cause jams. See Media to avoid on page 23 for more information. Loading documents to fax, copy, or scan Use these instructions to load originals into the all-in-one for scanning. For the best quality scans, use the flatbed scanner. To load originals onto the flatbed scanner (HP LaserJet 3052/3055 all-in-one only) 1.
CAUTION To prevent damage to the all-in-one, do not use an original that contains correction tape, correction fluid, paper clips, or staples. Also, do not load photographs, small originals, or fragile originals into the ADF. 1. For the HP LaserJet 3050 all-in-one, insert the top-end of the stack of originals into the ADF input tray, with the media stack face-down and the first page to be copied at the bottom of the stack.
Loading input trays Priority input slot The priority input slot holds up to 10 sheets of media up to 163 g/m2 (43 lb) in weight or 1 envelope, transparency, or card. Load media with the top forward and the side to be printed facing up. To prevent jams and skewing, always adjust the side media guides before feeding the media. 250-sheet input tray (tray 1) The input tray holds up to 250 pages of 80 g/m2 or 20 lb paper, or fewer pages of heavier media (25 mm [0.9 inch] or shorter stack height).
3 ENWW Maintenance ● Managing supplies ● Cleaning the all-in-one ● Calibrating the scanner ● Managing and maintaining the all-in-one 37
Managing supplies Life expectancies of print cartridges and parts that wear Inspect any parts that wear when servicing the product. Replace them as needed, based on failure or wear rather than on usage. The following table lists approximate schedules for replacing consumables.
Replacing and recycling supplies Changing the print cartridge For information about how to install a new print cartridge, see To install the print cartridge on page 32. CAUTION If toner gets on your clothing, wipe it off with a dry cloth and wash the clothing in cold water. Hot water sets toner into the fabric. NOTE To recycle supplies, place the used supply in the box in which the new supply arrived. Use the enclosed return label to send the used supply to HP for recycling.
Cleaning the all-in-one To clean the exterior Use a soft, damp, lint-free cloth to wipe dust, smudges, and stains off of the exterior of the all-in-one. To clean the ADF scanner glass and white platen (HP LaserJet 3050 all-in-one) Over time, specks of debris might collect on the ADF scanner glass and white platen, which can affect performance. Use the following procedure to clean the ADF scanner glass and white platen.
3. Clean the ADF scanner glass and the white platen with a soft cloth or sponge that has been moistened with nonabrasive glass cleaner. CAUTION Do not use abrasives, acetone, benzene, ammonia, ethyl alcohol, or carbon tetrachloride on any part of the all-in-one; these can damage the all-in-one. Do not place liquids directly on the glass or platen. They might seep and damage the all-in-one. ENWW 4. Dry the glass and platen with a chamois or a cellulose sponge to prevent spotting. 5.
To clean the flatbed glass and the ADF scanner glass (HP LaserJet 3052/3055 all-in-one) Dirty glass, from fingerprints, smudges, hair, and other causes, slows down performance and affects the accuracy of special features such as fit-to-page and copy. NOTE If streaks or other defects appear only on copies produced by using the ADF, clean the ADF scanner glass (step 3). It is not necessary to clean the flatbed glass. 1. Turn off the all-in-one, unplug the power cord, and then raise the lid. 2.
To clean the lid backing (HP LaserJet 3052/3055 all-in-one) Minor debris can accumulate on the white document lid backing that is located underneath the all-inone lid. 1. Turn off the all-in-one, unplug the power cord, and then raise the lid. 2. Clean the white document lid backing by using a soft cloth or sponge that has been moistened with a mild soap and warm water. Also clean the white strip next to the lid backing. 3. Wash the backing gently to loosen debris; do not scrub the backing. 4.
To clean the ADF pickup-roller assembly (HP LaserJet 3052/3055 allin-one) If the ADF has trouble feeding documents, you can clean the ADF pickup-roller assembly. 44 1. Turn off the all-in-one and unplug the power cord. 2. Open the ADF cover. 3. Press the round green button while lifting the green lever. Rotate the green lever until it stops in the open position. The pickup-roller assembly should remain on the surface. 4. Remove the assembly, and then wipe it with a soft, dry cloth.
ENWW 5. Return the assembly to the same place in the ADF. The largest roller goes in back, and the gear side is away from you. 6. Lower the green lever until the flat green part fits in between the rollers. Press down on the green lever until you hear a snap. 7. To check for correct installation, lift the green lever until it remains open. The pickup-roller assembly should be secured to the lever assembly and should not fall out. 8. Make sure that the green hooks secure both sides of the assembly.
9. Lower the green lever assembly and close the ADF cover. 10. Plug in the all-in-one, and then turn it on.
Cleaning the paper path During the printing process, paper, toner, and dust particles can accumulate inside the all-in-one. Over time, this buildup can cause print-quality problems such as toner specks or smearing. This all-in-one has a cleaning mode that can correct and prevent these types of problems. To clean the paper path from HP ToolboxFX Use HP ToolboxFX to clean the paper path. This is the recommended cleaning method.
To clean the paper path from the all-in-one control panel If you do not have access to HP ToolboxFX, you can print and use a cleaning page from the all-in-one control panel. 1. Press Menu. 2. Use the < or the > button to find the Service menu, and then press 3. Use the < or the > button to find Cleaning Mode, and then press 4. Load plain letter or A4 paper when you are prompted. 5. Press . . again to begin the cleaning process. A page feeds slowly through the all-in-one.
Calibrating the scanner The scanner calibrates itself automatically at the start of scan of copy jobs. Normally, you do not need to initiate the calibration, but you can initiate the calibration through the secondary service menu and produce a report that shows the calibration results. See Secondary service menu on page 251.
Managing and maintaining the all-in-one Information pages Information pages reside within the all-in-one memory. These pages help you to diagnose and solve problems with the all-in-one. NOTE If the all-in-one language was not correctly set during installation, you can set the language manually so that the information pages print in one of the supported languages. Change the language by using HP ToolboxFX. See HP ToolboxFX on page 53. Demo page 1. On the all-in-one control panel, press Menu. 2.
Configuration page The configuration page lists the current settings and properties of the all-in-one. To print the configuration page from the all-in-one, complete the following steps. Figure 3-1 Sample configuration page on page 51 shows a sample configuration page. Descriptions of the sections on a configuration page appear below the figure. 1. On the all-in-one control panel, press Menu. 2. Use the < or > button to select Reports, and then press 3.
7. Print Settings. This section contains information about all-in-one settings that are configured in the printer driver or in HP ToolboxFX. 8. Status Log. This section contains information about all-in-one errors. A second page also prints. On that page, the Fax Settings section provides details about the all-in-one fax settings. Network configuration page The network configuration page lists the all-in-one network settings. To print from the all-in-one, complete the following steps: . 1.
HP ToolboxFX HP ToolboxFX is a Web-based program that you can use to complete the following tasks: ● Check the all-in-one status. ● Configure the all-in-one settings. ● View troubleshooting information. ● View online documentation. You can view HP ToolboxFX when the all-in-one is directly connected to a computer or when it is connected to a network. You must perform a typical software installation in order to use HP ToolboxFX.
Status The HP ToolboxFX Status tab contains links to the following main pages: ● Device Status. View all-in-one status information. This page indicates all-in-one conditions such as a jam or an empty tray. After you correct a problem with the all-in-one, click Refresh Status to update the all-in-one status. ● Supplies status. View all-in-one supplies status information. ● Device Configuration.
Fax Use the HP ToolboxFX Fax tab to perform fax tasks from the computer. The Fax tab contains links to the following main pages: ● Fax Tasks. Perform such tasks as sending a fax or clearing the fax memory, or set the fax-receive mode. ● Fax Phone Book. Add, edit, or delete entries in the all-in-one phone book. ● Fax Send Log. View all of the recent faxes that have been sent from the all-in-one. ● Fax Receive Log. View all of the recent faxes that have been received by the all-in-one.
can make changes to the name of the group directly in the phone book directory list by clicking the entry and typing the changes. Make sure that you do not have a check mark in the Select column. ● To delete an entry from the speed-dial list, select the item and then click Delete. ● To move speed dial entries, select the entry and then click Move, or select Move and then specify the entry in the dialog box. Either select Next empty row or specify the number of the row where you want to move the entry.
Fax Send Log The HP ToolboxFX Fax send log lists all recently sent faxes and information about them, including the date and time sent, job number, fax number, page count, and the results. When you send a fax from a computer that is connected to the all-in-one, the fax contains a View link. Clicking this link opens a new page that provides information about the fax. Click any column heading in the Fax send log to re-sort the information in that column in ascending or descending order.
System settings The HP ToolboxFX System Settings tab contains links to the following main pages: ● Device information. Change the device information settings for the all-in-one. ● Paper handling. Change the all-in-one paper-handling settings, such as default paper size and default paper type. ● Print quality. Change the all-in-one print-quality settings. ● Paper types. Change the all-in-one mode settings for a each media type, such as letterhead, prepunched, or glossy paper. ● System setup.
Print quality Use the HP ToolboxFX print-quality options to improve the appearance of print jobs. The four options provided for controlling print quality are resolution, REt (Resolution Enhancement technology), print density, and Economode. ● Resolution. Select 600 resolution for average print jobs and Fast Res 1200 for higher-quality print jobs. Select ProRes 1200 for the highest-quality print job, but a longer printing time. ● REt. You can turn on REt, which HP provides for improved print quality.
Device polling You can turn off HP ToolboxFX device polling to reduce network traffic, but you will also disable some HP ToolboxFX features: pop-up alerts, fax log updates, the ability to receive faxes to this computer, and scanning by using the Scan To button. To turn device polling on, do both of the following: ● Clear Turn off device polling in HP ToolboxFX. ● Turn on one of the disabled device-polling features in HP ToolboxFX. NOTE You must click Apply before your changes take effect.
Macintosh Configure Device (Mac OS X V10.3 and Mac OS X V10.4) Macintosh Configure Device is a Web-based program that provides access to information about the allin-one (for example, information about supplies status and all-in-one settings). Use Macintosh Configure Device to monitor and manage the all-in-one from the computer NOTE You must perform a complete software installation to use Macintosh Configure Device. ● Check the all-in-one status and print information pages.
Embedded Web server NOTE The embedded Web server (EWS) is only available for the HP LaserJet 3052 all-in-one and the HP LaserJet 3055 all-in-one when you are using an operating system other than the Macintosh operating system. If you are using the Macintosh operating system, the EWS is available for all of the all-in-one models. This all-in-one is equipped with an embedded Web server, which provides access to information about all-in-one and network activities.
4 ENWW Theory of operation ● Basic operation ● Formatter system ● Printer (product base) functions ● HP LaserJet 3050 all-in-one unique components ● HP LaserJet 3052/3055 all-in-one unique components ● Fax functions and operation (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only) 63
Basic operation This chapter presents a functional overview of the HP LaserJet 3050/3052/3055 all-in-one.
Figure 4-1 All-in-one configuration Sequence of operation The microprocessor (CPU) on the ECU controls the operation sequence of the all-in-one. The following events take place during normal all-in-one operation: Sequence of operation, HP LaserJet 3050 all-in-one scanner Table 4-1 HP LaserJet 3050 all-in-one basic sequence of operation Period Purpose Remarks WAIT. After the all-in-one is turned on until Ready appears on the control-panel display. To perform the firmware initialization.
Sequence of operation, HP LaserJet 3052/3055 all-in-one scanner Table 4-2 HP LaserJet 3052/3055 all-in-one basic sequence of operation Period Purpose Remarks WAIT. After the all-in-one is turned on until the message Scanner Bulb warming up appears on the controlpanel display. To perform the firmware initialization. Tests RAM and establishes communication with the control panel. AMBIENT LIGHT DETECT. From the end of the WAIT period until the scanner bulb is turned on.
Table 4-2 HP LaserJet 3052/3055 all-in-one basic sequence of operation (continued) Period Purpose Remarks SCAN. To scan one page of the original document. For an ADF scan: another STAGE period follows this period if another page of the original document is present in the ADF. Otherwise, the EJECT period follows. For an ADF scan: From the end of the brief pause that follows the STAGE period until the EJECT or following-page STAGE period. For a flatbed scan: The REHOME period follows this period.
Sequence of operation, HP LaserJet 3050/3052/3055 all-in-one printer (product base) Table 4-3 HP LaserJet 3050/3052/3055 all-in-one basic sequence of operation—printer (product base) 68 Period Purpose Remarks WAIT After the all-in-one is turned on until the end of the initial rotation of the main motor. To clear the drum surface of potential and to clean the primary charging roller. Detects whether or not the cartridge is installed.
ENWW 20 19 18 17 16 15 LASER BEAM signal (BD) 14 Laser Diode 13 Transfer Charging Bias 12 Developing Bias (DC) 11 Developing Bias (AC) 10 Primary Charging Bias (DC) 9 Primary Charging Bias (AC) 8 Paper Delivery Sensor (PS803) WAIT 1.8 1.0 Negative Bias Max. 1.5 0.2 1.7 About About 0.99 Max. 122 About 0.45 About 0.
Formatter system The formatter coordinates the major systems.
Standard startup process When the all-in-one is unplugged or the power is off, the firmware code is stored on the formatter in two blocks. The first block of code is an executable boot block (about 64K of code). The second block of code is a compressed version of the all-in-one control code. When the all-in-one is turned on, the boot block decompresses the all-in-one control code and stores it in RAM. Then the all-in-one performs a full startup with the control code running from RAM.
Control panel The control panel consists of the following features: ● Groups of buttons to control fax, copy, scan, and configuration functionality (only the HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one have fax capability) ● A 2-by-16 LCD display that shows status, menus, and messages ● Front-panel status lights Economode When you select Economode (draft) in the printer driver, the all-in-one uses less toner, which extends the life of the print cartridge.
PJL overview Printer job language (PJL) is an integral part of configuration, in addition to the standard printer command language (PCL). With standard ECP cabling, the all-in-one can use PJL to perform the following functions: ENWW ● Two-way communication with the host computer through a USB connection. The all-in-one can communicate information to the host (such as the control-panel status). ● Isolation of print environment settings from one print job to the next.
Printer (product base) functions Printing functions are divided into five groups: ● Engine control ● Formatter ● Image formation ● Laser/scanner ● Pickup and feed The following figure is a block diagram of the printer (product base): To external device (host computer, etc.
Engine control system (engine control unit and power-supply assembly) The engine control system coordinates all print engine activities. The engine control system includes both the engine control unit (ECU) printed circuit assembly (PCA) and the power-supply assembly PCA. NOTE In other HP LaserJet products, the ECU and power functions are combined onto one PCA known as the controller PCA or the DC controller PCA.
Printer (product base) laser/scanner The ECU sends signals to the laser/scanner assembly to modulate the laser-diode on and off modes and to drive the laser/scanner motor.
Power system on the power-supply assembly The power-supply assembly supplies the ac, dc, and high-voltage power-supply circuits. Ac power distribution The ac power circuitry supplies ac voltage whenever the power cord is connected to the ac power source and the power switch is on. The ac voltage is distributed to the dc power supply circuitry and to the ac driver circuitry, which controls ac voltage to the fuser-assembly heating element.
High-voltage power distribution The high-voltage power supply applies an overlap of dc and ac voltage to the primary charging roller and to the developing roller. This circuit also applies a positive or negative dc voltage to the transfer roller according to the instructions from the ECU. This circuit also controls the image density by changing the primary ac voltage and the developing ac bias according to the print-density setting (which is set by using HP ToolboxFX).
Image-formation system Laser printing requires the interaction of several different technologies including electronics, optics, and electrophotographics to provide a printed page. Each process functions independently and must be coordinated with the other all-in-one processes. Image formation consists of seven processes: Writing Stage 2. Scanning exposure Flow of paper Direction of drum rotation 1. Primary charging 3. Developing stage Drum cleaning stage 7. Drum cleaning Paper delivery Fusing stage 5.
6. Fusing stage—During this process, the heat and pressure fuse the toner into the media to produce a permanent image. The media passes between a heated fusing element and a soft pressure roller, which melt the toner and press it into the media. 7. Drum-cleaning stage—During this process, the cleaning blade is in contact with the surface of the drum at all times. As the drum rotates during printing, the cleaning blade wipes excess toner off the drum and stores it in the waste toner receptacle.
Figure 4-7 Printer (product base) paper path ENWW Printer (product base) functions 81
Jam detection in the all-in-one The top-of-page sensor (PS801) and the paper-delivery sensor (PS803) detect media moving through the all-in-one. If a jam is detected, the ECU immediately stops the printing process and the Attention (Cancel) light illuminates on the control panel. Conditions of jam detection 82 ● Pickup delay jam—Paper does not reach the top-of-page sensor (PS801) within 1.
HP LaserJet 3050 all-in-one unique components This section presents an overview of the relationships between unique major components in the HP LaserJet 3050 all-in-one. This section describes the optical scanning system and ADF pickup and feed system used in the HP LaserJet 3050 all-in-one. It does not describe the image-formation system that is common to the HP LaserJet 3050/3052/3055 all-in-one. For information about image formation, see Image-formation system on page 79.
2 1 Figure 4-9 HP LaserJet 3050 all-in-one optical and feed systems 84 1 Optical scanning system 2 ADF pickup-and-feed system Chapter 4 Theory of operation ENWW
ADF pickup-and-feed system The ADF pickup-and-feed system uses a pickup roller, a feed roller, and a delivery roller to transport the document into, through, and out of the optical scanning system. The optical scanning system motor drives the rollers when the formatter signals the optical scanning system that a job to print or copy is present. The ADF pickup-and-feed path has two sensors. The document sensor (PS1201) detects the presence of a document in the ADF input tray.
The slower speed allows for a consistent space between pages of a multiple-page document, which is necessary for correct document scanning. The one-way clutch varies the rotation speeds of the pickup roller and feed roller to prevent the rollers from tearing the document.
Optical scanning system The contact image sensor (CIS) is the major component of the optical scanning system. The CIS consists of three LEDs (red, green, and blue), a light guide, the scanning glass, the rod lens array, and a sensor array. When the CIS scans a document, the CIS does not move. Instead, documents move past the CIS. Figure 4-12 HP LaserJet 3050 all-in-one optical system (1 of 2) The formatter controls the CIS. To begin scanning, the formatter sends a signal to the CIS.
Figure 4-13 HP LaserJet 3050 all-in-one optical system (2 of 2) 88 Chapter 4 Theory of operation ENWW
HP LaserJet 3052/3055 all-in-one unique components This section presents an overview of the relationships between unique major components in the HP LaserJet 3052/3055 all-in-one. This section describes the optical scanning system and ADF pickup and feed system used in the HP LaserJet 3052/3055 all-in-one. It does not describe the image-formation system that is common to the HP LaserJet 3050/3052/3055 all-in-one. For information about image formation, see Image-formation system on page 79.
The image data CCD sensor uses a 300 ppi array and two half-pixel-offset 600 ppi arrays which are capable of collecting data at 600 ppi or 1200 ppi (600 ppi if one array is used or 1200 ppi if both arrays are used). Scanner operation At startup and periodically at other times, the scanner assembly moves systematically to locate its home position. It then calibrates to a white strip located under the glass at the right end of the scan tub.
ADF paper path and ADF sensors The following diagram shows the ADF paper path. Figure 4-15 HP LaserJet 3052/3055 all-in-one ADF path The paper-present sensor determines if paper is in the ADF. The form sensor detects the top and bottom edges of the document. One other sensor detects an open ADF door. ADF jam detection The ADF has two sensors that detect paper. The paper-present sensor detects the presence of media in the ADF input tray. The form sensor detects media moving through the ADF.
Fax functions and operation (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only) The following sections describe the all-in-one fax capabilities. Computer and network security features The HP LaserJet 3050/3055 all-in-one can send and receive fax data over telephone lines that conform to public switch telephone network (PSTN) standards. The secure fax protocols make it impossible for computer viruses to be transferred from the telephone line to a computer or network.
Distinctive ring function Distinctive ring is a service that a telephone company provides. The distinctive ring service allows three phone numbers to be assigned to one phone line. Each phone number has a distinctive ring. The first phone number has a single ring, the second phone number has a double ring, and the third phone number has a triple ring. If the distinctive ring service is used, the fax phone number should be the phone number that uses the double or triple ring.
Faxing with Voice over IP services Voice over IP (VoIP) services provide normal telephone service, including long distance service through a broadband Internet connection. These services use packets to break up the voice signal on a telephone line and transmit it digitally to the receiver, where the packets are reassembled. The VoIP services are often not compatible with fax machines. The VoIP provider must state the service supports fax over IP services.
LIU in the fax subsystem Two versions of LIU are used in the HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one. One is used in the North American, South American, and Asian countries/regions. The other is used primarily in European countries/regions.
Data path The magnetically coupled signals that cross the isolation barrier go either through a transformer or a relay. The TIP and RING signals use a transformer to cross the isolation barrier. TIP and RING are the two-wire paths for all signals from the telephone network. All signaling and data information comes across them, including fax tones and fax data. The telephone network uses dc current to determine the hook state of the telephone, so line current must be present during a call.
Hook switch control Another optically coupled signal is the hook switch control. This signal from the formatter causes an optoisolator on the LIU to activate (making an open circuit into a short circuit). When shorted, the circuit is drawing dc current from the central office and is considered “on-hook.” When open, no dc current flows and the state is considered to be “off-hook.
Fax page storage in flash memory Fax pages are the electronic images of the document page. They can be created in any of three ways: scanned to be sent to another fax machine, generated to be sent by the computer, or received from a fax machine to be printed. The all-in-one stores all fax pages in flash memory automatically.
5 ENWW Removal and replacement ● Removal and replacement strategy ● HP LaserJet 3050 all-in-one ● HP LaserJet 3052/3055 all-in-one ● Printer (product base) 99
Removal and replacement strategy This chapter documents the removal and replacement of field-replaceable parts (FRUs) only. Reinstallation is generally the reverse of removal. Occasionally, notes and hints are included to provide directions for difficult or critical replacement procedures. HP does not support the repairing individual subassemblies or troubleshooting at the component level. Note the length, diameter, color, type, and location of each screw.
Required tools ● #2 Phillips screwdriver with magnetic tip ● Small flat-blade screwdriver ● Long flat-blade screwdriver ● #8 and #10 torx screwdrivers ● Needle-nose pliers ● ESD mat (if one is available) ● Penlight (optional) CAUTION Do not use a pozidrive screwdriver or any motorized screwdriver. These can damage screws or screw threads on the all-in-one. Before performing service ● If possible, print a configuration page (to record customer settings) and menu structure report.
5. Perform a control-panel test from the secondary service menu (see Secondary service menu on page 251). Verify that the control-panel buttons beep when they are pressed. NOTE If the control-panel buttons do not beep, verify that the user did not disable this function on the device control panel. 6. Print a configuration page, and then verify that the expected printing sounds occur. 7. Print a demo page, and then verify that the print quality is as expected. 8.
Parts removal order Use the following diagrams to determine which parts of the all-in-one must be removed before servicing. NOTE HP LaserJet 3052/3055 all-in-one: The scanner assembly might be contaminated if it is opened outside of a cleanroom environment. For this reason, the entire scanner assembly is replaceable only as a unit. Replacing the scanner assembly as an entire assembly replaces the CIS or CCD scan module, the CCD scan motor, and the cable.
Scanner side covers Separation-pad set (not the entire assembly) Link assemblies and scanner support-frame springs HP LaserJet 3050 scanner assembly Scanner assembly top cover Top-cover assembly Pickup roller White plate Control-panel bezel Control-panel assembly Media lever and torsion spring Separation-pad assembly Figure 5-2 Parts removal order for the HP LaserJet 3050 all-in-one NOTE The separation-pad set and the separation-pad assembly are two different assemblies.
Print cartridge Transfer roller Media input tray Printer side covers Rear cover and fuser cover Power supply HP LaserJet 3050, 3052, or 3055 scanner assembly Print-cartridge door Front cover Scanner support-frame Engine controller unit Laser/scanner assembly Main motor Fuser assembly Pickup assembly Front cover Speaker assembly Formatter and LIU (if present) Figure 5-4 Parts removal order for the printer (product base, all models) NOTE In Figure 5-4 Parts removal order for the printer (product base, all mo
HP LaserJet 3050 all-in-one This section documents removal and replacement instructions for components that are unique to the HP LaserJet 3050 all-in-one. Use the following diagram to determine the parts removal order.
Link assemblies and scanner support-frame springs 1. Push the print-cartridge-door release and raise the scanner assembly until it is locked open. 2. Use a small flat-blade screwdriver to release the link tabs on each link assembly. WARNING! When the link assemblies are disengaged, the scanner assembly can easily fall off of the product base if it is rotated too far towards the back of the all-in-one. CAUTION Do not push too hard on the link tabs or the tab might break.
4. Remove the link assembly. Repeat this step with the remaining link. Figure 5-8 Removing the link assemblies and scanner support-frame springs (3 of 4) 5. Use needle-nose pliers to remove the scanner support-frame spring. Repeat this step for the other scanner support-frame spring.
Scanner side covers NOTE In the following figure, examine the locations of the of the locking tabs on the scanner cover before you remove the cover. 1. Use a small flat-blade screwdriver to release the right-side cover-locking tab.
2. Rotate the right-side cover away from the all-in-one, and then slide it toward the front of the all-inone to remove it. 2 1 Figure 5-11 Removing the scanner side covers (2 of 2) 3. 110 Repeat this procedure for the left-side cover.
Separation-pad set NOTE The separation-pad set and the separation-pad assembly are two different assemblies. The separation-pad set consists of the pad, clear plastic sheet, and the pad cover. The separation-pad set is a user-replaceable assembly. The separation-pad assembly consists of the separation lever, tension spring, feed arm, and the components of the separation-pad set. The separation-pad assembly is not a user-replaceable assembly.
Control-panel bezel 1. Carefully release three locking tabs, one at the front and one on each side (callout 1). 1 Figure 5-13 Removing the control-panel bezel (1 of 3) 2. Slightly raise the control-panel bezel. Then disconnect one FFC (callout 2) and one wire-harness connector (callout 3). CAUTION Do not bend or fold the FFCs during the removal or reinstallation process.
3. Push the control-panel bezel toward the back of the all-in-one to release the three rear locking tabs and then remove it. Figure 5-15 Removing the control-panel bezel (3 of 3) NOTE You must release the wire-harness from two retainers on the control-panel bezel.
Control-panel assembly CAUTION The control panel is an ESD-sensitive component. 1. Remove the control-panel bezel. See Control-panel bezel on page 112. 2. Remove three screws (callout 1). 1 Figure 5-16 Removing the control-panel assembly (1 of 2) 3. Rotate the control-panel button assembly away from the control-panel cover and remove it.
Media lever and media-lever torsion spring 1. Remove the control-panel bezel. See Control-panel bezel on page 112. 2. Carefully dislodge and remove the media-lever torsion spring.
Separation-pad assembly 1. Remove the control-panel bezel. See Control-panel bezel on page 112. 2. Remove five screws (callout 1) and the sheet-metal plate. CAUTION Do not touch the grey separation pad. Skin oils and fingerprints on the separation pad might cause paper-feed problems. Press down on the plate as the screws are removed. Four compression springs are under the plate. The separation-pad assembly also has one compression spring attached to the shield.
3. Rotate the separation-pad assembly up until the keyed hinges can clear the hinge retainers. Figure 5-20 Removing the separation-pad assembly (2 of 3) 4. Remove the separation-pad assembly.
Scanner assembly 1. Rotate the ADF input tray assembly toward the front of the all-in-one, and then lift it up and off of the all-in-one. Figure 5-22 Removing the scanner assembly (1 of 14) 2. Rotate the ADF output bin up and then squeeze the locking tabs until the they clear the mounting holes in the scanner assembly.
3. Remove the right-side cover-mounting screw (callout 1). Figure 5-24 Removing the scanner assembly (3 of 14) 4. Release the back of the cover.
5. Release the bottom tab (callout 2). 2 Figure 5-26 Removing the scanner assembly (5 of 14) 6.
7. Disconnect two flat, flexible cables (FFCs; callout 3) and one wire-harness connector (callout 4). CAUTION Do not bend or fold the FFCs during the removal or reinstallation process. 3 4 Figure 5-28 Removing the scanner assembly (7 of 14) 8. Push the blue print-cartridge-door release button and then raise the scanner assembly until it locks open.
9. Grasp the tab on the gear-drive arm bracket and carefully flex it away from the scanner assembly to release the bracket. Figure 5-30 Removing the scanner assembly (9 of 14) 10. Pull the bracket toward the right side of the all-in-one until its mounting tabs clear the holes in the scanner assembly.
11. Use a small flat-blade screwdriver to release the link tabs on each link assembly. WARNING! When the link assemblies are disengaged, the scanner assembly can easily fall off of the product base if it is rotated too far towards the back of the all-in-one. CAUTION Do not push too hard on the link tabs or the tabs might break. NOTE it is not necessary to completely remove the link arms. However, the link arms are not captive when they are disengaged from the scanner assembly.
A B C Figure 5-33 Removing the scanner assembly (12 of 14) 124 Chapter 5 Removal and replacement ENWW
13. Remove one screw (callout 5). Carefully remove the grounding shield (callout 6) from the wire loom. Feed the two FFCs and the wire-harness through the hole in the chassis, and remove them from the wire loom. 5 6 Figure 5-34 Removing the scanner assembly (13 of 14) 14. Rotate the scanner assembly toward the rear of the all-in-one until the rear hinges clear the chassis hinge pins. Lift the scanner assembly off of the product base.
Scanner assembly top cover 1. 2. Remove the following assemblies or components: ● Scanner assembly. See Scanner assembly on page 118. ● Scanner side covers. See Scanner side covers on page 109. Remove four screws (callout 1). CAUTION The PCB is an ESD-sensitive component.
3. Feed the FFCs, the wire connectors, and the ground strap through the opening in the scannerassembly base. CAUTION Examine how the FFCs and wire-harnesses are routed before moving them. Do not bend or fold the FFCs during the removal or reinstallation process. Figure 5-37 Removing the scanner assembly top cover (2 of 4) Reinstallation tip When reinstalling the FFCs, make sure that the ferrites snap into the clips in the base.
4. Remove the two left-side mounting screws (callout 2). Reinstallation tip When reinstalling the scanner assembly top cover make sure that it is seated on the alignment pins (the plastic pin is behind the screw [callout 3] in the following figure). 2 Figure 5-38 Removing the scanner assembly top cover (3 of 4) 5. Lift up on the scanner assembly top cover to separate it from the scanner-assembly base.
Top-cover assembly 1. 2. Remove the following assemblies: ● Scanner assembly See Scanner assembly on page 118. ● Scanner assembly top cover. See Scanner assembly top cover on page 126. Rotate the top-cover assembly (callout 1) away from the frame assembly (callout 2). 1 2 Figure 5-40 Removing the top-cover assembly (1 of 2) 3. Pull the left-end hinge out of the slot in the frame assembly, and slide the top cover to the left until the right-side hinge clears the hole in the frame assembly.
Pickup roller 1. 2. Remove the following assemblies: ● Scanner assembly. See Scanner assembly on page 118. ● Scanner assembly top cover. See .Scanner assembly top cover on page 126 Unclip the pickup-roller retainer (callout 1) and rotate it until the flat sides of the clip align with the mounting slot on the frame assembly. 1 Figure 5-42 Removing the pickup roller (1 of 2) 3.
White platen 1. 2. Remove the following assemblies: ● Scanner assembly. See Scanner assembly on page 118 ● Scanner assembly top cover. See Top-cover assembly on page 129 ● Top-cover assembly. See Top-cover assembly on page 129 Use a small flat-blade screwdriver to carefully pry the white-platen retainer tabs (callout 1) off of the posts on the guide assembly. 1 Figure 5-44 Removing the white platen (1 of 2) 3. Lift the guide assembly up and off of the white platen.
HP LaserJet 3052/3055 all-in-one This section documents removal and replacement instructions for components that are unique to the HP LaserJet 3052/3055 all-in-one. Use the following diagram to determine the parts removal order. NOTE The scanner assembly might be contaminated if it is opened outside of a cleanroom environment. For this reason, the entire scanner assembly is replaceable only as a unit.
Flatbed lid 1. Open the ADF cover. Carefully pry the ADF motor cover off (from right to left) and away from the scanner assembly. 3 1 2 Figure 5-48 Removing the flatbed lid (1 of 5) Reinstallation tip When you reinstall the ADF motor cover, make sure that it is positioned correctly. If the motor cover is not installed correctly, the ADF lid will not close correctly, resulting in intermittent ADF errors.
2. Disconnect two wire connectors (callout 1). Close the ADF cover. 1 Figure 5-50 Removing the flatbed lid (2 of 5) 3. Locate the hinge-retainer clip on the far-left flatbed hinge.
4. Lift up on the retainer-clip locking tab, and pull the clip down and away from the flatbed lid. Figure 5-52 Removing the flatbed lid (4 of 5) 5. Raise the flatbed scanner lid until the hinges can clear the hinge posts on the scanner bed, and then remove the flatbed lid from the scanner assembly. CAUTION Avoid touching the flatbed glass or the ADF separation pad. Skin oils and fingerprints can contaminate the glass or pad and cause print-quality problems.
Link assemblies and scanner support-frame springs 1. Push the print-cartridge access button and raise the scanner assembly until it is locked open. 2. Use a small flat-blade screwdriver to release the link tabs on each link assembly. WARNING! When the link assemblies are disengaged, the scanner assembly can easily fall off of the product base if it is rotated too far towards the back of the all-in-one. CAUTION Do not push too hard on the link tabs or the tabs might break.
4. Remove the link assembly. Repeat this step with the remaining link. Figure 5-56 Removing the link assemblies and scanner support-frame springs (3 of 4) 5. Use needle-nose pliers to remove the scanner support-frame spring. Repeat this step for the other scanner support-frame spring.
Control-panel bezel Gently pry the outside edges (at callout 1 in Figure 5-58 Removing the control-panel bezel on page 138) of the control-panel bezel away from the all-in-one to release it. Continue to pry up the bezel (at callout 2), working toward the center of the bezel (at callout 3).
Control-panel assembly CAUTION The control-panel is an ESD-sensitive component. 1. Remove the control-panel bezel. See Control-panel bezel on page 138. 2. Remove two screws (callout 1).
3. Rotate the back of the control panel up to release the front edge of the panel from two locking tabs, and then disconnect one FFC (callout 2). Remove the control-panel assembly CAUTION Do not bend or fold the FFCs during the removal or reinstallation process. 2 Figure 5-60 Removing the control-panel assembly (2 of 2) NOTE When you reinstall the control panel, make sure that the tabs on the scanner body fit into the slots on the control-panel assembly.
ADF separation pad CAUTION Avoid touching the flatbed glass or the ADF separation pad. Skin oils and fingerprints can contaminate the glass or pad and cause print-quality or paper-pickup problems. 1. Open the ADF cover and lift up the ADF pickup-roller assembly. 2. Use a #8 torx screwdriver to remove two torx screws (callout 1) and remove the ADF separationpad assembly. NOTE Be careful not to lose the two torx screws. Reuse the screws when installing a new separation pad.
ADF input-tray flag 1. Open the ADF cover. 2. Gently flex the plastic rib until the front flag hinge clears the mounting hole. Rotate the ADF inputflag until the hinge pin clears the plastic rib. Pull the flag towards you to release the back hinge.
ADF pickup roller and load-arm assembly (HP LaserJet 3052/3055 allin-one) 1. Open the ADF cover. Figure 5-63 Replacing the ADF pickup roller and load-arm assembly (1 of 6) 2. Lift the load spring off of the post on the load arm.
3. Rotate the load-arm assembly. Figure 5-65 Replacing the ADF pickup roller and load-arm assembly (3 of 6) 4. Lift the load-arm assembly, slide the assembly toward the front of the all-in-one to disengage the gear-end of the assembly, and then lift the assembly off of the all-in-one.
5. Insert the gear-end of the new load-arm assembly into the all-in-one and then lower the assembly into place. 2 1 Figure 5-67 Replacing the ADF pickup roller and load-arm assembly (5 of 6) 6. Reattach the load spring and then close the ADF cover.
ADF scanner glass CAUTION Avoid touching the flatbed glass or the ADF separation pad. Skin oils and fingerprints can contaminate the glass or pad and cause print-quality or paper-pickup problems. 1. Use a #10 torx screwdriver to remove one torx screw. Figure 5-69 Removing the ADF scanner glass (1 of 3) 2. Carefully remove the plastic ADF scanner-glass frame.
3. Slide the black glass-locking lever toward the back of the all-in-one to release the glass, and then carefully remove the glass. CAUTION Avoid touching the flatbed glass or the ADF separation pad. Skin oils and fingerprints can contaminate the glass or pad and cause print-quality or paper-pickup problems.
Scanner assembly CAUTION Avoid touching the flatbed glass or the ADF separation pad. Skin oils and fingerprints can contaminate the glass or pad and cause print-quality or paper-pickup problems. NOTE It is not necessary to remove the flatbed lid before removing the scanner assembly. However, removing the flatbed lid will make the scanner assembly lighter and easier to handle when it is removed. To remove the flatbed lid, see Flatbed lid on page 133. 1. Remove the ADF input tray.
4. Release the bottom tab (callout 2). 2 Figure 5-74 Removing the scanner assembly (3 of 13) 5. Rotate the back side of the cover away from the all-in-one, and then slide the cover toward the front of the all-in-one to remove it.
6. Disconnect two wire-harnesses and two FFCs on the formatter (callout 4). CAUTION Do not bend or fold the FFCs during the removal or reinstallation process. 4 Figure 5-76 Removing the scanner assembly (5 of 13) 7. Push the print-cartridge door button to release the scanner assembly, and then raise the assembly until it locks open.
8. Grasp the tab on the gear-drive arm bracket and carefully flex it away from the scanner assembly to release the bracket. Figure 5-78 Removing the scanner assembly (7 of 13) 9. Pull the bracket toward the right side of the all-in-one until its mounting tabs clear the holes in the scanner assembly.
10. Use a small flat-blade screwdriver to release the hinge tabs on each front hinge. WARNING! When the front hinges are disengaged, the scanner assembly can easily fall off of the product base if it is rotated too far toward the back of the all-in-one. CAUTION Do not push too hard on the link tabs or the tabs might break. Figure 5-80 Removing the scanner assembly (9 of 13) 11. Use one of the following three separate methods to support the scanner assembly so that it does not fall off of the product base.
A B C Figure 5-81 Removing the scanner assembly (10 of 13) ENWW HP LaserJet 3052/3055 all-in-one 153
12. Use needle-nose pliers to squeeze the two plastic wire-harness retainers and push them up into the scanner support-frame. WARNING! Do not clip wire retainers. The wire-harnesses might be damaged if the retainers are clipped instead of removed. Figure 5-82 Removing the scanner assembly (11 of 13) 13. Remove one screw (callout 5). Carefully remove the grounding shield (callout 6) from the wire loom.
14. Rotate the scanner assembly toward the rear of the all-in-one until the rear hinges clear the chassis hinge pins. Lift the scanner assembly off of the product base. CAUTION Make sure that the ADF cover and flatbed lid are supported so that they do not swing open when you remove the scanner assembly. NOTE Do not lose the two scanner cushions in the scanner support-frame corners (one shown; callout 7).
Printer (product base) This section documents removal and replacement instructions for components that are common to the HP LaserJet 3050 all-in-one, HP LaserJet 3052 all-in-one, and HP LaserJet 3055 all-in-one. Use the following diagram to determine the parts removal order. NOTE For clarity, the all-in-one is shown without the scanner assembly in place. Removing the scanner assembly is not necessary to perform some of the procedures in this section.
Printer separation pad 1. At the back of the all-in-one, remove two screws (callout 1). 1 Figure 5-86 Removing the printer separation pad (1 of 2) 2. Remove the printer separation pad and frame.
Print cartridge CAUTION To prevent damage, do not expose the print cartridge to direct or bright light. Cover it with a piece of paper. 1. Push the print-cartridge-door release button. Figure 5-88 Removing the print cartridge (1 of 2) 2. Pull the print cartridge up and out of the all-in-one.
Printer pickup roller 1. Remove the print cartridge and locate the printer pickup roller. See Print cartridge on page 158. Figure 5-90 Removing the printer pickup roller (1 of 5) 2. Gently release the small, white tabs on each side of the pickup roller by pushing them away from the roller, and then rotate the roller away from the mounting frame. CAUTION Do not touch the black-sponge transfer roller inside the all-in-one. Touching the transfer roller can damage the all-in-one.
3. Gently pull the roller up and out of the all-in-one. Figure 5-92 Removing the printer pickup roller (3 of 5) 4. Circular and rectangular pegs on each side of the pickup roller fit into corresponding slots on the pickup-roller mounting frame and prevent the roller from being incorrectly installed. Position the replacement pickup roller in the slots on the pickup-roller frame.
5. Rotate the top of the pickup roller into position until the white tabs on each side of the roller snap into place.
Installing the scanner cushions 1. Open the print-cartridge door. 2. Place a scanner cushion in the both well on the scanner support-frame (callout 1). Use the eraserend of a pencil or use an ink pen with the cap on to seat each cushion in its well.
Media input tray 1. Open the media input tray lid. Figure 5-96 Removing the media input tray (1 of 3) 2. Slide the adjustable media guides to the center of the tray.
3. Depress the pickup-tray locking tabs to release the media input tray, and then pull it out and away from the all-in-one.
Transfer roller CAUTION Do not touch the black-sponge portion of the transfer roller. Skin oils deposited on the transfer roller might cause print-quality problems. Be very careful not to break the paper guide that is removed during replacement of the transfer roller. Because the paper guide is not an FRU, the entire printer will have to be replaced. 1. Open the print-cartridge door and remove the print cartridge. 2. Release the two locking tabs on the paper guide and rotate the guide up.
3. The clamps on the paper guide fit over the bearings on each end of the transfer roller. Do not touch the black-sponge portion of the transfer roller. Grasp the right end of the paper guide and pull the clamp off the bearing on the right side of the transfer roller. Then slide the clamp slightly to the right, and the left clamp will slide off the left bearing. Figure 5-100 Removing the transfer roller (2 of 3) 4. Squeeze the two small tabs on the transfer roller.
Side covers NOTE The procedure for removing the right-side and left-side covers is identical, with the exception of the location of the screw that fastens the cover to the all-in-one. The right-side cover is shown in the following procedure. 1. Remove one screw (callout 1). Callout 2 is on the left-side cover. 2 1 Figure 5-102 Removing the side covers (1 of 4) 2. Release the locking tab on the back of the cover.
3. Release the bottom tab (callout 2). CAUTION When removing the left-side cover, hang the all-in-one off of the table to gain access to the bottom tab. This prevents the I/O shield from being damaged if the right-side cover is off and the all-in-one is tilted too far up. 2 Figure 5-104 Removing the side covers (3 of 4) 4. Slightly rotate the back-side of the right cover away from the all-in-one, and then slide it toward the front of the all-in-one to release it.
Print-cartridge door 1. Remove the scanner assembly. For the HP LaserJet 3050 all-in-one, see Scanner assembly on page 118. For the HP LaserJet 3052/3055 all-in-one, see Scanner assembly on page 148. 2. Fully open the print-cartridge door and gently pull downward on both print-cartridge swing arms (callout 1) to release them. (In Figure 5-106 Removing the print-cartridge door (1 of 2) on page 169, the left arm is disengaged). CAUTION Be careful when releasing the swing arms. They can easily break.
Rear cover and fuser cover 1. Remove the right-side and left-side covers. See Side covers on page 167. 2. Remove one screw (callout 1). 1 Figure 5-108 Removing the rear cover and fuser cover (1 of 3) 3. Release the two rear-cover locking tabs (callout 2). Rotate the bottom of the rear cover up and away from the printer, and remove it.
4. Rotate the bottom of the fuser cover away from the printer, and remove the fuser cover.
Front cover 1. Remove the right-side and left-side covers. See Side covers on page 167. 2. Release the lower right-side front-cover locking tab and slightly pry the lower-right corner of the front cover away from the printer. Figure 5-111 Removing the front cover (1 of 3) 3. Release the lower left-side front-cover locking tab ( located near the corner of the power supply) and slightly pry the lower-left corner of the front cover away from the printer.
4. Pry up and pull out on the front cover to release it from the printer. Remove the front cover.
Speaker assembly 1. Remove the right-side printer cover. See Side covers on page 167 2. Disconnect one wire-harness connector (callout 1), unclip one wire retainer (callout 2), and then remove one screw (callout 3). 1 Figure 5-114 Removing the speaker assembly (1 of 2) 3. Carefully pry the sheet-metal brace away from the printer chassis. Slide the speaker down and slightly to the right to release it from the retaining clips on the printer chassis.
Power supply 1. Remove the rear cover and fuser cover. See Rear cover and fuser cover on page 170. 2. Disconnect one spade connector (callout 1) and remove three screws (callout 2). Reinstallation tip The center screw in callout 2 is a ground screw and is different from the others. When reinstalling the power supply, make sure that this screw is used in the center hole. 1 2 Figure 5-116 Removing the power supply (1 of 5) 3.
4. Remove four screws (callout 5). 5 Figure 5-118 Removing the power supply (3 of 5) 5. Unclip two clips (callout 6) and remove the switch cover.
6. Unclip one clip (callout 7) and dislodge, but do not remove, the wire guide, and then remove the power supply.
Formatter and line interface unit (LIU) CAUTION The formatter and LIU are ESD-sensitive devices. NOTE The HP LaserJet 3052 all-in-one does not have a line interface unit (LIU) because it does not have fax capabilities. 1. Remove the right cover. See Side covers on page 167. 2. Remove two screws (callout 1) and the I/O shield (callout 2).
● Figure 5-122 HP LaserJet 3050 all-in-one formatter and LIU on page 179 shows the formatter and LIU from an HP LaserJet 3050 all-in-one. Figure 5-122 HP LaserJet 3050 all-in-one formatter and LIU ● Figure 5-123 HP LaserJet 3052 all-in-one formatter on page 179 shows the formatter from an HP LaserJet 3052 all-in-one.
● Figure 5-124 HP LaserJet 3055 all-in-one formatter and LIU on page 180 shows the formatter and LIU from an HP LaserJet 3055 all-in-one. Figure 5-124 HP LaserJet 3055 all-in-one formatter and LIU 4. Remove three screws from the formatter PCA (callout 2). For the HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one, also remove three screws (callout 3) from the LIU. Remove the formatter and any LIU PCAs.
5. Gently separate the formatter from the sheet-metal shield. Mount the replacement formatter on this shield.
Scanner support-frame 1. 2. Remove the following assemblies ● Scanner assembly. For the HP LaserJet 3050 all-in-one, see Scanner assembly on page 118. For the HP LaserJet 3052/3055 all-in-one, see Scanner assembly on page 148. ● Left cover. See Side covers on page 167. ● Rear cover and fuser cover. See Rear cover and fuser cover on page 170. ● Print-cartridge door. See Print-cartridge door on page 169. ● Front cover. See Front cover on page 172. Remove six screws (callout 1).
3. Rotate the gear-drive bracket until the retainer on the gear-drive arm aligns with the opening in the bracket, and remove the bracket. Figure 5-128 Removing the scanner support-frame (2 of 4) 4. Lift the scanner support-frame up and off of the printer.
5.
Engine controller unit (ECU) 1. 2. Remove the following assemblies: ● Scanner assembly. For the HP LaserJet 3050 all-in-one, see Scanner assembly on page 118. For the HP LaserJet 3052/3055 all-in-one, see Scanner assembly on page 148. ● Left cover. See Side covers on page 167. ● Rear cover and fuser cover. See Rear cover and fuser cover on page 170. ● Print-cartridge door. See Print-cartridge door on page 169. ● Front cover. See Front cover on page 172. ● Scanner support-frame.
3. Use a long flat-blade screwdriver to disengage the two ECU shield retainer hooks, one at each side (left hook shown; callout 2), inside the all-in-one. Push the hooks into the all-in-one to disengage them. 2 Figure 5-132 Removing the ECU (2 of 6) 4. Disconnect one FFC (callout 3) from the formatter.
5. Disconnect one FFC (callout 4) from the power supply. CAUTION Do not bend or fold the FFCs during the removal or reinstallation process. 3 Figure 5-134 Removing the ECU (4 of 6) 6. Disconnect one FFC (callout 5) from the ECU and the wire-harness connector to the main motor (callout 6). Remove one screw (callout 7). Release the wire-harness (callout 8, underneath the ECU) from the retainer slot on the ECU.
7. Carefully remove the ECU from the printer. As you remove it, unweave the wire-harnesses and FFCs from the wire looms, and disconnect one wire-harness connector (callout 9) from the laser/ scanner. Remove the ECU.
Laser/scanner assembly 1. 2. Remove the following assemblies: ● Scanner assembly. For the HP LaserJet 3050 all-in-one, see Scanner assembly on page 118. For the HP LaserJet 3052/3055 all-in-one, see Scanner assembly on page 148. ● Left cover. See Side covers on page 167. ● Rear cover and fuser cover. See Rear cover and fuser cover on page 170. ● Print-cartridge door. See Print-cartridge door on page 169. ● Front cover. See Front cover on page 172. ● Scanner support-frame.
Main motor 1. 2. Remove the following assemblies: ● Scanner assembly. For the HP LaserJet 3050 all-in-one, see Scanner assembly on page 118. For the HP LaserJet 3052/3055 all-in-one, see Scanner assembly on page 148. ● Formatter. See Formatter and line interface unit (LIU) on page 178. ● Left cover. See Side covers on page 167. ● Rear cover and fuser cover. See Rear cover and fuser cover on page 170. ● Print-cartridge door. See Print-cartridge door on page 169. ● Front cover.
3. Remove one screw (callout 3), and remove the main motor.
Fuser 1. Remove the following assemblies: ● Scanner assembly. For the HP LaserJet 3050 all-in-one, see Scanner assembly on page 118. For the HP LaserJet 3052/3055 all-in-one, see Scanner assembly on page 148. ● Left cover. See Side covers on page 167. ● Rear cover and fuser cover. See Rear cover and fuser cover on page 170. ● Print-cartridge door. See Print-cartridge door on page 169. ● Front cover. See Front cover on page 172. ● Scanner support-frame and chassis reinforcement plate.
5. Lift the fuser assembly at the right and remove it. Figure 5-141 Removing the fuser assembly (2 of 2) NOTE When replacing the fuser assembly, be sure to transfer the delivery-sensor PCB from the old fuser to the new one.
Paper-pickup assembly 1. 2. Remove the following assemblies: ● Scanner assembly. For the HP LaserJet 3050 all-in-one, see Scanner assembly on page 118. For the HP LaserJet 3052/3055 all-in-one, see Scanner assembly on page 148. ● Left cover. See Side covers on page 167. ● Rear cover and fuser cover. See Rear cover and fuser cover on page 170. ● Print-cartridge door. See Print-cartridge door on page 169. ● Front cover. See Front cover on page 172. ● Transfer roller.
6 ENWW Troubleshooting ● Troubleshooting process ● Control-panel messages ● Jams ● Print image-quality problems ● Scan/copy image-quality problems ● ADF problems ● Fax troubleshooting (HP LaserJet 3050/3055 all-in-one) ● Control-panel-display problems ● Functional checks ● Service-mode functions ● Troubleshooting tools ● Firmware updates and recovery 195
Troubleshooting process NOTE The HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one have faxing capabilities. The HP LaserJet 3052 all-in-one does not operate as a faxing device. Troubleshooting checklist Follow these steps when trying to solve a problem with the all-in-one. Step number Verification step Possible problems Solutions 1 Is the power on? No power as a result of a failed power source, cable, switch, or fuse. 1. Verify that the all-in-one is plugged in. 2.
Step number Verification step Possible problems Solutions Clean the paper path. 4 Does the all-in-one copy? Place the configuration page into the ADF and make a copy. The report should feed smoothly through the ADF, and copies should print without print-quality problems. Also make a copy from the flatbed. 5 Does the HP LaserJet 3050/3055 all-in-one send a fax? Connect the telephone line and press Start Fax to verify that a dial tone exists (using a hand set, if necessary). Attempt to send a fax.
Step number Verification step Possible problems Solutions A problem might exist with the network connection. If printing through the network, verify that the device has a valid TCP/IP address by checking the network configuration. If the issue persists, verify that the green LED on the network connector on the back of the device is lit. If it is not lit, there might be a bad network connection, cable, or network device (router or hub).
Control-panel messages The majority of the control-panel messages are intended to guide the user through typical operation. The control-panel messages indicate the status of the current operation, and include a page count on the second line of the display, if appropriate. When the all-in-one is receiving fax data, print data, or scanning commands, control-panel messages indicate this status.
Table 6-1 Alert and warning messages (continued) Control panel message Event log error message Description Recommended action telephone cord into a jack for another phone line. Try a different telephone cord. None The all-in-one experienced an internal communication error. This is a warning message only. Job output might be affected. Device is busy. Try again later None The all-in-one is currently in use. Wait for the all-in-one to finish the current job.
Table 6-1 Alert and warning messages (continued) Control panel message Event log error message Description Recommended action Make sure that the phone is working by disconnecting the allin-one, plugging in a telephone to the phone line, and making a voice call. Plug the all-in-one telephone cord into a jack for another phone line, and try sending the fax again. Try a different telephone cord. Fax memory full Canceling recv. None During the fax transmission, the all-in-one ran out of memory.
Table 6-1 Alert and warning messages (continued) Control panel message Event log error message Description Recommended action Check that the telephone cord is securely connected by unplugging and replugging the cord. Make sure that you are using the telephone cord that came with the all-in-one. Make sure that the phone is working by disconnecting the allin-one, plugging in a telephone to the phone line, and making a voice call. Connect the all-in-one to a different phone line.
Table 6-1 Alert and warning messages (continued) Control panel message Event log error message Description Recommended action Check for a dial tone on the phone line by pressing Start Fax. Unplug the telephone cord from both the all-in-one and the wall and replug the cord. Make sure that you are using the telephone cord that came with the all-in-one. Unplug the all-in-one telephone cord from the wall, plug in a telephone, and try making a voice call.
Table 6-1 Alert and warning messages (continued) Control panel message Event log error message Description Recommended action Plug the all-in-one telephone cord into a jack for another phone line. No fax detected None No paper pickup Press [ None ] The all-in-one answered the incoming call but did not detect that a fax machine was calling. Try a different telephone cord. The all-in-one has failed to pick up a piece of media. Verify that the media was inserted far enough into the input tray.
Critical error messages Critical error messages can indicate some kind of failure. Cycling the power might fix the problem. If a critical error persists, the all-in-one might require service. Critical error message-tables Table 6-2 Critical error messages Control panel message Description Recommended action 49 Error The all-in-one has experienced an internal embedded software error.
Table 6-2 Critical error messages (continued) Control panel message Description Recommended action all-in-one: See Scanner assembly on page 148. 52 Scanner Error The all-in-one has experienced an internal hardware error. 1. Turn off the power by using the power switch, and then wait at least 30 seconds. 2. If a surge protector is being used, remove it. Plug the all-in-one directly into the wall socket. 3. Check the FFC connection between the formatter and the scanner.
Table 6-2 Critical error messages (continued) Control panel message Description Recommended action ADF door is open (HP LaserJet 3052/3055 all-in-one only) The ADF lid is open or a sensor is malfunctioning. Make sure the ADF lid is closed. (HP LaserJet 3052/3055 all-in-one only) If the ADF motor cover was removed during product servicing, make sure that the cover is installed correctly and that the ADF lid can close correctly. See Figure 5-49 ADF cover correctly installed on page 133.
Table 6-2 Critical error messages (continued) Control panel message Description Recommended action Scanner Bulb Failure (HP LaserJet 3052/3055 all-in-one only) The scanner assembly experienced a scanner-bulb error. Turn off the power by using the power switch, wait at least 30 seconds, and then turn on the power and wait for the product to initialize. Try another power source. If the error persists, lift the flatbed to see if the scanner bulb is illuminating.
Event-log codes These codes appear in the event-log section of the configuration report. Use this table to associate an event-log code with a description of the event.
Table 6-3 Event-log codes (continued) 210 Event code Event sub-code Event 79 5 or 6 or 7 Reserved 30016 0 Insufficient memory 30017 0 Print page punt 30035 0 NVRAM error 30036 0 NVRAM service error 30108 0 MIO connection break 30109 0 Data communication error 30110 0 MIO buffer overflow 35028 0 Bad MIO 35031 0 Invalid personality 50003 0 Bad fuser 50004 0 Bad beam detect 50005 0 Bad scanner motor 50007 0 Engine-communication error 50012 0 Bad malfunction 500
Jams This section contains instructions for clearing jams from the all-in-one. CAUTION Always try to remove a jam in the direction that the media feeds through the printer. Causes of jams Occasionally, paper or other print media can become jammed during a print job. Some causes include the following events: ● The input trays are loaded incorrectly or overfilled, or the input-tray guides are not set correctly.
Where to look for jams Jams can occur in these locations: ● Inside the all-in-one ● In output areas ● In the ADF Find and remove the jam by using the instructions on the following pages. If the location of the jam is not obvious, first look inside the all-in-one. Loose toner might remain in the all-in-one after a jam. This problem typically resolves itself after a few sheets have been printed.
3. ENWW Replace the print cartridge and close the print-cartridge door.
Input trays To clear a jam in the input trays, perform the following steps: CAUTION Do not use sharp objects, such as tweezers or needle-nose pliers, to remove jams. Damage caused by sharp objects will not be covered by the warranty. When removing jammed media, pull the jammed media straight away from the all-in-one. Pulling jammed media out of the all-in-one at an angle can damage the all-in-one. 214 1. Open the tray 1 and pull any visible jammed media out of the all-in-one. 2.
Output bin CAUTION Do not use sharp objects, such as tweezers or needle-nose pliers, to remove jams. Damage caused by sharp objects will not be covered by the warranty. With both hands, grasp the side of the media that is most visible (this includes the middle), and carefully pull it free from the all-in-one.
Solving print paper-feed problems Use the following tables to solve paper-feed problems when printing. Paper-feed solutions, printing Pages are coming out curled or wrinkled. Cause Solution Paper curl is inherent to the laser printing processes, and occurs when paper is subjected to heat. Paper curl tends to relax as the paper cools while resting on a flat surface. Make sure that the media meets specifications detailed in the HP LaserJet Printer Family Print Media Guide.
The printer feeds multiple sheets or jams frequently from the main input tray or priority input tray. Cause Solution The output capacity was exceeded in the output bin. Do not allow more than 100 sheets of 80 g/m2 (20-lb) bondweight paper (less for heavier media) to fill the paper output bin. The pickup roller is dirty or damaged. Clean the pickup roller. Replace the pickup roller. See Printer pickup roller on page 159. The separation pad is dirty or damaged. Clean the separation pad.
Jams occur in the automatic document feeder (ADF) Occasionally, media becomes jammed during a fax, copy, or scan job. You are notified of a media jam by the Doc feeder jam Clear, Reload message that appears on the all-in-one control-panel display. ● The ADF input tray is loaded incorrectly or is too full. See Loading documents to fax, copy, or scan on page 34 for more information. ● The media does not meet HP specifications, such as those for size or type.
ENWW 2. Remove the jam cleanout part. Using both hands, lift up on the two handles until the part unsnaps. Rotate and lift out the cleanout part and set it aside. 3. Lifting the green lever, rotate the pick mechanism until it stays open. 4. Gently try to remove the page without tearing it. If you feel resistance, go to the next step. 5. Open the ADF lid and gently loosen the media by using both hands. 6. When the media is free, gently pull it out in the direction shown.
7. Close the lid to the flatbed scanner. 8. Lower the green lever. 9. Reinstall the cleanout part by inserting it as shown. Push down on the two tabs until the part snaps into place. Install the cleanout part correctly, because future jamming might occur if the cleanout part is not replaced correctly. 10. Close the ADF lid.
Solving ADF paper-feed problems Use the following tables to help solve paper-feed problems when scanning or copying. Paper-feed solutions, scanning/copying Long pages stop feeding through the ADF. Cause Solution The document is too long. The maximum document length is 381 mm (15 inches). If the document is too long, copy segments of it and scan each copy. The paper-delivery sensor is damaged. Check the paper-delivery sensor to make sure it is not jammed.
The ADF feeds multiple sheets or jams frequently from the media input tray. Solution Cause Pickup roller on page 130. For information about replacing the HP LaserJet 3052/3055 all-in-one pickup roller, see ADF pickup roller and load-arm assembly (HP LaserJet 3052/3055 all-in-one) on page 143. 222 The ADF document feed guide is not installed correctly. Make sure that both sides of the ADF document feed guide are installed correctly. The ADF pickup roller is damaged or worn.
Print image-quality problems If the problem occurs when printing, see Solving print image-quality problems on page 224. If the problem occurs when copying or scanning, see Scan/copy image-quality problems on page 232. NOTE Some image-quality problems can be isolated by performing printer functional tests. See Functional checks on page 247. Image quality problems can also be caused by using cables that are not USB cables.
Solving print image-quality problems Use the following tables to help solve problems with printed pages. NOTE Some image-quality problems can be isolated by performing printer functional tests. See Functional checks on page 247. Image-quality problems can also be caused by using cables that are not USB cables. Print image-quality solutions Pages do not print. Cause Solution The product is not plugged in, or the power is not on.
Toner specks appear on the printed page. . Cause Solution The media does not meet HP specifications (for example, it is Make sure that the media meets specifications detailed in too moist or too rough). the HP LaserJet Printer Family Print Media Guide. The print path needs to be cleaned. Clean the print path. See Cleaning the all-in-one on page 40. Characters are only partially printed (also referred to as dropouts). ENWW Cause Solution A single sheet of media is defective.
Vertical lines appear on the printed page. Cause Solution The priority input tray is not in place. Adjust the priority input tray. The photosensitive drum inside the print cartridge is scratched. Replace the print cartridge. The fuser is damaged or has an obstruction. Replace the fuser. See Fuser on page 192. The printed page has a gray background. 226 Cause Solution The priority input tray is not in place. Adjust the priority input tray. The print density setting is too high.
Toner smears appear on the printed page. Cause Solution If the toner smears appear on the leading edge of the media, the media guides are dirty. Wipe the media guides with a dry, lint-free cloth. The media does not meet HP specifications (for example, it is Make sure that the media meets specifications detailed in too moist or too rough). the HP LaserJet Printer Family Print Media Guide. The print cartridge needs to be replaced. Replace the print cartridge. The fuser temperature is too low.
The toner is loose, and it does not stay attached to the printed page. Cause Solution The fuser film is torn or has holes. Replace the fuser. See Fuser on page 192. The fuser film is damaged. Check the fuser film for tears or holes. Replace the fuser, if necessary. See Fuser on page 192. The print cartridge needs to be replaced. Replace the print cartridge. Repetitive vertical defects appear on the printed page.
Characters are poorly formed and are producing hollow images. Cause Solution The media is too slick. Try a different media. Make sure that the media meets specifications detailed in the HP LaserJet Printer Family Print Media Guide. The driver is not set for the correct media. 1. On the printer-driver Paper tab, under Type is:, select the correct media type from the drop-down list. (This affects only the current print job.) 2. Select the correct media through HP ToolboxFX.
Pages are skewed (crooked). Cause Solution The input tray is too full. Remove some of the sheets. The HP LaserJet 3050 all-in-one ADF input tray can hold up to 30 sheets of 80-g/m2 (20-lb) bond-weight paper (less for heavier paper). Remove some of the sheets. The HP LaserJet 3052/3055 allin-one ADF input tray can hold up to 50 sheets of 80-g/m2 (20lb) bond-weight paper (less for heavier paper). Remove some of the sheets.
Large amounts of toner are scattered around the characters. Cause Solution The media resistivity is too high. 1. Use a different media. Make sure that the media meets specifications detailed in the HP LaserJet Printer Family Print Media Guide. 2. Turn the stack of media over and return it to the tray. 3. Use media that is designed for laser printers. Vertical white stripes appear.
Scan/copy image-quality problems Use the following tables to help solve problems with scanned or copied pages. NOTE Some image-quality problems can be isolated by performing printer functional tests. See Functional checks on page 247. Image quality problems can also be caused by using cables that are not USB cables. Scan/copy image-quality solutions Pages do not print. Cause Solution The product is not plugged in, or the power is not on.
Pages are skewed (crooked). Cause Solution The ADF input tray is too full. Remove some of the sheets. The HP LaserJet 3050 all-in-one ADF input tray can hold up to 30 sheets of 80-g/m2 (20-lb) bond-weight paper. Remove some of the sheets. The HP LaserJet 3052/3055 allin-one ADF input tray can hold up to 50 sheets of 80-g/m2 (20lb) bond-weight paper. Remove some of the sheets. The main input tray can hold up to 250 sheets of 80-g/m2 (20-lb) bond-weight paper. The media does not meet HP specifications.
Vertical white stripes appear. Cause Solution The media does not meet HP specifications (for example, it is too moist or too rough). Make sure that the media meets specifications detailed in the HP LaserJet Printer Family Print Media Guide. The toner is low. Gently shake the print cartridge back and forth to redistribute the toner. If copying with the ADF, the scanner glass is dirty. 1. Clean the scanner glass. See Cleaning the all-in-one on page 40. 2.
The printed page has a gray background. Cause Solution The priority input tray is not in place. Adjust the priority input tray. The print density setting is too high. Decrease the amount of background shading by using HP ToolboxFX. The lighter/darker setting is incorrect. Some "white" media might produce a greyish background at the default lighter/ darker settings. Adjust the lighter/darker setting to a lighter level. The media basis-weight is too high. Change the media to a lower basis-weight.
Vertically-aligned black streaks or smears appear on successive pages. Cause Solution 3052/3055 all-in-one: See Scanner assembly on page 148. Scanned images have black dots or streaks. 236 Cause Solution The scanner glass is dirty. Clean the ADF path and flatbed glass. See Cleaning the all-inone on page 40. The toner drum in the print cartridge is damaged. Replace the print cartridge. A problem exists with the scanner assembly. Replace the scanner assembly.
Scanned text is not clear. Cause Solution The lighter/darker and resolution settings need to be adjusted before scanning. Check that the settings are correct in the software program that is being used to scan the document. See the online user guide section for more information. The original is on colored paper. If the original is on colored paper, including brown recycled paper, the text might not be clear. Try adjusting the resolution, contrast, and brightness settings in the scanning program.
Large amounts of toner are scattered around the characters. 238 Cause Solution The media resistivity is too high. 1. Use a different type of media. Make sure that the media meets specifications detailed in the HP LaserJet Printer Family Print Media Guide. 2. Turn the stack of media over and return it to the tray. 3. Use media that is designed for laser printers.
ADF problems “Document Loaded”continually appears on the control-panel display. Cause Solution The ADF paper-sensor flag is damaged. Replace the ADF. The “Scanner error” message continually appears on the control-panel display. Cause Solution The ADF-to-scanner connector is not connected correctly or the ADF is not functioning. Reseat the connector. If the problem persists, replace the ADF. The ADF pickup roller does not move.
Fax troubleshooting (HP LaserJet 3050/3055 all-in-one) General fax troubleshooting Verify the following information before troubleshooting fax problems. ● ● ● Is the fax set up correctly? ● Make sure that the fax cord that came with the all-in-one is the cord that is being used. This cord has been tested and meets the device specifications. ● Make sure that the fax cord is installed in the correct port. The fax cord must be plugged into the line port.
NOTE Hewlett-Packard does not recommend using a parallel splitter (T-splitter) with the all-in-one because it might degrade the quality of the telephone signal. If a second device must be attached to the telephone line in addition to the all-in-one, plug the second device into the telephone port on the all-in-one (the port on the back that is marked with a telephone icon).
Table 6-4 General fax troubleshooting (continued) The fax activity log or fax call reports are printing at inappropriate times Cause Solution The fax activity log or fax call report settings are incorrect. Print a configuration report and check the fax activity log and fax call report print settings. Set the fax activity log or fax call report print settings at the all-in-one control panel. The all-in-one volume is too loud or too soft.
The all-in-one is not receiving incoming fax calls. Cause Solution The fax cord is not connected correctly or is not the cord that came with the all-in-one. Make sure that the fax cord is fully seated (check both ends). You must use the fax cord that came with the all-in-one to connect the all-in-one to a telephone line. The rings-to-answer setting is incorrect. Set the rings-to-answer setting at the all-in-one control panel.
Fax send troubleshooting The fax stops during a send operation. Cause Solution The telephone line is not working. Increase the speaker volume, and then press Start Fax on the control panel. If you hear a dial tone, then the telephone line is working. Disconnect the all-in-one from the line and connect a standard telephone. Try to make a voice call from the telephone to verify that the line is working. The fax machine that the fax is being sent to has malfunctioned.
DSL problems A digital subscriber line (DSL) uses digital technology over standard copper phone wires. DSL services rely on an AM signal. The HP LaserJet 3050/3055 all-in-one is a Group 3 fax device, which operates below the DSL capability and is not directly compatible with digital signals.
Control-panel-display problems CAUTION Static electricity can cause unexpected black lines or dots to appear on the all-inone control-panel display. Do not touch the all-in-one control-panel display if there is a chance that you have collected a static electric charge (for example, by walking on carpet in a lowhumidity environment). Unexpected lines or dots might appear on the all-in-one control-panel display, or the display might become blank if the all-in-one is exposed to an electric or magnetic field.
Functional checks Use the following procedures to help diagnose and solve problems that occur in the print engine. Control-panel test To perform a control-panel test NOTE Perform this procedure as quickly as possible in order to complete the control-panel check before the formatter begins communicating with the control panel. The control-panel test continues until all of the buttons have been tested or until the formatter attempts to communicate with the control panel (after approximately 40 seconds).
To perform a half self-test check 1. Print a self-test page. (See Troubleshooting tools on page 259.) 2. Open the print-cartridge door after the paper advances halfway through the printer (about 5 seconds after the motor begins to rotate). The leading edge of the paper should have advanced past the print cartridge. 3. Remove the print cartridge. 4. Open the print cartridge drum shield to view the drum surface.
High-voltage contacts check The high-voltage contacts in the product must have a good connection with the contacts on the print cartridge to provide the necessary voltages for the image-formation processes. To check the print-cartridge contacts Remove the print cartridge and visually inspect the three connection points (callout 1) on the end of the print cartridge. If they are dirty or corroded, clean them with isopropyl alcohol. If they are damaged, replace the print cartridge.
To check the high-voltage connector pins The assembly has three spring-loaded pins (callout 1) to contact the print cartridge. Verify that the pins are not dirty or corroded and that the spring-loading action is functional. If the pins are dirty or obstructed, clean them with a dry cloth. If they are damaged, replace the all-in-one.
Service-mode functions Use the following information to perform system-wide reset procedures and to adjust certain global settings such as the country/region. Users do not have access to this information. Secondary service menu Use the secondary service menu to perform various tests and to print service reports. The following is a hierarchical diagram of the secondary service menu.
Developer’s menu Use the developer’s menu to adjust fax data-store parameters and to run various tests. The following is a hierarchical diagram of the developer’s menu. Main menu Submenu Submenu Developer's menu Read Register (none) Write Register (none) Enter MAC Addr.
Main menu Submenu Submenu Error Diffusion Clock Dithering On Off Pick and Kick (none) To gain access to the developer’s menu 1. Make sure that Ready appears on the control-panel display. 2. Press Menu. 3. Press the * and # buttons simultaneously. NOTE You can gain access to the developer’s menu from any other menu by pressing the * and # buttons simultaneously. 4. Use the < or > button to navigate through the developer’s menu. 5.
Changing the country/region code parameters Three situations can occur that necessitate changing the country/region or language settings for the product: 1. The customer has moved to a different country/region from the country/region in which the all-inone was purchased. 2. The information has been erased because of an NVRAM initialization, or the parameters are set to "undefined." 3. The formatter has been replaced.
Soft reset Before performing an NVRAM init, attempt a soft reset, which does not reset configuration settings or cause a loss of data. Performing a soft reset To perform a soft reset 1. Press Menu. 2. Simultaneously press and then release the * button and the # button to open the developer's menu. 3. Press the < or > button until the message REINIT FFS appears on the second line of the controlpanel display. 4. Press 5. The process takes approximately 2.5 minutes.
NVRAM init NVRAM init returns all stored parameters in NVRAM to factory default values or to a default ROM value, depending on the variable, and performs a system reset. Performing NVRAM init can cause the all-in-one to violate local telephone regulations. Reset the language and country/region after performing an NVRAM init. An NVRAM init resets the following settings and information: ● All menu settings are reset to factory default values, including the fax header and company name.
System settings for localized products NOTE The HP LaserJet 3052 all-in-one does not have an LIU because it does not have fax capabilities. The list of available country/regions includes all of the country/regions listed in Table 6-5 System settings on page 257 and Chile (default media size letter, default date format ddmmyy, and default time format a.m./p.m.
Table 6-5 System settings (continued) 1 Country/region LIU installed Default media size1 Date format Time format Korea US/rest of the world A4 yymmdd a.m./p.m. Luxemburg Europe A4 ddmmyy 24 hour Malaysia US/rest of the world A4 ddmmyy 24 hour Mexico US/rest of the world Letter ddmmyy a.m./p.m. Netherlands Europe A4 ddmmyy 24 hour New Zealand US/rest of the world A4 ddmmyy a.m./p.m. Norway Europe A4 ddmmyy 24 hour Pakistan US/rest of the world A4 ddmmyy a.m./p.m.
Troubleshooting tools Use the control panel to print configuration reports and demo pages. The configuration report shows the settings that have been selected at the control panel. Printing a configuration report is also considered a "self test" for the printer, although any of the reports can serve this purpose. A printout of the control-panel menu structure is a useful reference if you alter settings in the menu. Printing a configuration report, demonstration page, or menu structure 1. Press Menu. 2.
T.30 protocol trace (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only) Use a T.30 protocol trace report to troubleshoot fax transmission and receive issues. To print a T.30 protocol trace report 1. Press Menu. 2. Use the < or > button to select Service, and then press 3. Use the < or > button to select Print T.30, and then press 4. Use the < or > button to select Print report now, and then press settings and prints the reports. . . .
V.34 fax standard V.34 is the industry-wide fax standard for full-duplex modems that transmit at speeds up to 28,000 bps. When V.34 is turned on, the product automatically adjusts the transmission speed based on the clarity of the image. Turning V.34 off can resolve some fax transmission issues. To change the V.34 setting 1. Press Menu. 2. Use the < or > button to select Fax setup, and then press 3. Use the < or > button to select All faxes, and then press 4. Use the < or > button to select V.
Table 6-6 Fax receive codes (continued) Code Description Recommended action errors. This is usually caused by extremely poor line conditions. Set the ECM to Off. Errors might still occur, which might result in degraded image quality on the received page. However, the ability to receive the entire document will be improved. 224 The product has received one or more pages that contain excessive errors. This is usually caused by extremely poor line conditions.
Table 6-6 Fax receive codes (continued) Code Description Recommended action The power at the remote machine has been interrupted or deliberately turned off, causing the fax session to be interrupted. 238 239 (ECM error) 240 (ECM error) 241 (ECM error) The remote fax machine sent an unexpected communication. None. This is a defect in the remote sending machine. 242 The remote fax machine is attempting to receive instead of send. Both machines have attempted to start receiving at the same time.
Table 6-6 Fax receive codes (continued) Code Description Recommended action although the modem has not detected a remote disconnect. The remote machine is probably transmitting fill bytes instead of data, and is either broken or jammed. 264 282 The product has not received any data at the start of a page during ECM reception although the modem has not detected a remote disconnect. The remote machine is probably transmitting sync frames instead of data, and is either broken or jammed.
Table 6-7 Fax send codes Code Description Recommended action 300 The fax session has been completed without errors. None required. 311 The user has pressed the Stop button, which caused the session to be prematurely halted before all pages have been transmitted. None required. 312 A remote fax device has failed to answer the call. Specifically, fax tones or the fax handshake from a remote machine has not been detected.
Table 6-7 Fax send codes (continued) Code Description Recommended action Configure the remote machine for poll transmission. The remote user must first load a document to transmit and then configure the machine for polling. 321 A communication error with the receiving fax machine was caused by poor telephone-line conditions. Attempt to send the fax again when telephone-line conditions have improved. 322 - 324 Telephone-line conditions are too poor to send a fax. 1.
Table 6-7 Fax send codes (continued) Code Description Recommended action The remote machine has encountered a feature incompatibility, which caused it to terminate the session. 367 - 372 373-377 The remote machine is apparently stuck in the (ECM error) “on” mode. 378-379 None. 380 The remote machine has failed to issue a valid response to a CTC frame. This occurs during ECM transmission after multiple retransmissions of erroneous data. None; a defect exists in the remote machine.
Table 6-7 Fax send codes (continued) Code Description Recommended action 389 The product has originated a fax session and has reattempted V.8 negotiations multiple times without success. 1. Attempt to send the fax again when telephone-line conditions have improved. 2. Disable V.34 on the product and attempt the transmission with the V.17 mode. 390 The product has originated a fax session while using error correction (either V.34 or V.17).
Table 6-7 Fax send codes (continued) Code Description Recommended action the handshake with the remote machine and was consequently unable to transmit a T.30 frame. This occurs when the line is disconnected or if line conditions degrade during the session. ENWW 420 V.34 negotiations have failed from the originating machine during phase 4. Phase 4 occurs after V.8 and before the first T.30 frames are exchanged. These compatibility problems have been observed when sending to non-HP units.
Translating the fax trace report (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only) Print a fax log report. The fax log report contains information about the product’s interpretation of the problem. Read the time sequences, looking for abnormal activity on the fax trace report.
Table 6-8 Fax phase sequence (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only) (continued) Sequence Calling station Called station Receive message (SCAN), check for errors 17 18 Transmit FSK 19 At end of message, send one of the following: ● EOM ● EOP ● MPS ● PRI-Q ● PPS-NULL ● PPS-MPS ● PPS-EOM ● PPS-EOP ● PPS-PRI-Q Phase D—Post-message transmission (next page/end of transmission) (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only) 20 Detect EOM, EOP
Table 6-9 Appropriate responses (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only) (continued) Commands Comments Appropriate responses (EOR-NULL) Indicates the next block transmission from the transmitter to the receiver (ERR) (RNR) (CRP) Any one of the following: The receiver (ERR) ● (EOR-EOP) (RNR) ● (EOR-EOM) PIN ● (EOR-PRI-MPS) (CRP) ● (EOR-PRI-EOP) ● (EOR-PRI-EOM) Any one of the following: Post-message commands MCF ● MPS RTP ● EOP RTN ● EOM PIP ● (PRI-
Table 6-10 Fax abbreviations (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only) ENWW Abbreviation Function Signal format (“X”= any #) CED Called station identification 2100 Hz CFR Confirmation to receive X010 0001 1850 or 1650 Hz for 3 seconds CIG Calling subscriber identification 1000 0010 CNG Calling tone 1100 Hz for 500 ms CRP Command repeat X101 1000 CSI Called subscriber identification 0000 0010 CTC Continue to correct X100 1000 CTR Response to continue to cor
Table 6-10 Fax abbreviations (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only) (continued) Abbreviation Function Signal format (“X”= any #) GI Group identification 1850 Hz HDLC High-level data link control LCS Line conditioning signals 1100 Hz MCF Message confirmation X011 0001 1850 Hz 274 MSG Message received high speed data MPS Multipage signal X111 0010 NSF Nonstandard facilities command 1000 0100 NSF Nonstandard facilities 0000 0100 NSS Nonstandard setup X100
Table 6-10 Fax abbreviations (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only) (continued) Abbreviation Function Signal format (“X”= any #) SEP Selective polling 1000 0101 SUB Sub-address X100 0011 V.xx Protocol version used (Group 3 only) V.27 = 4800/2400 V.29 = 9600/7200 V.33 = 14400/12000 V.
3055 Figure 6-3 Example of a T.30 trace of a successfully sent fax NOTE Phase A, call establishment, does not show up on a trace report. Phase C is the phase in which faxed pages are transferred.
3055 Figure 6-4 Example of a T.
Repetitive image defect ruler Use the repetitive image-defect ruler to help solve image quality problems. Place the top line on the ruler next to the first occurrence of the defect on the page. Find the mark that points to the next instance of the defect to identify the component that is causing the defect. First occurrence of print defect (0.00 inches) Print cartridge 30.8 mm (1.21 inches) Print cartridge 37.7 mm (1.48 inches) Fuser (Fixing assembly) 41.0 mm (1.61 inches) Transfer roller 46.3 mm (1.
Firmware updates and recovery The device uses a flash-memory-based formatter that enables the firmware code to be updated when updated firmware is available. Flash memory also provides a method for product recovery if the installed firmware becomes corrupted or fails. Print a configuration page to find out what version of firmware code is installed on the device. If updated firmware is available, download the appropriate update (www.hp.com/support/lj3050; www.hp.com/ support/lj3052; www.hp.
280 Chapter 6 Troubleshooting ENWW
7 ENWW Parts and diagrams ● Ordering parts and supplies ● Accessories ● Diagrams ● HP LaserJet 3050 all-in-one scanner assembly ● HP LaserJet 3052/3055 all-in-one scanner assembly ● Printer (product base), HP LaserJet 3050/3052/3055 all-in-one ● Alphabetical parts list ● Numerical parts list 281
Ordering parts and supplies Parts that wear The parts on the product that wear are listed in Table 3-1 Life expectancies on page 38. Parts are available directly from Hewlett-Packard at the following Website: www.hp.com/buy/parts. Parts Order replacement parts from the following Website: www.hp.
Accessories The following accessories are available for the HP LaserJet 3050/3052/3055 all-in-one. Table 7-2 Accessories ENWW Product name Description Part number Print cartridge 2,000-page cartridge Q2612A Toner cloth Ideal for wiping up toner spills 5090-3379 Scanner hinge tool Use this tool to keep the scanner assembly from falling off of the printer when the entire assembly is being removed. 5185-7441 Fax telephone cord 2-wire 3-meter (9.
Documentation Table 7-3 Documentation Description Languages Part number Service manual (this manual) English only Q6502-90901 Service and support training CD English only Q6502-60115 Getting started guides English only Q6502-90902 English, French, Spanish, Portuguese, Italian, German, Dutch Q6502-90903 English, Swedish, Norwegian, Finnish, Greek, Danish, Hebrew Q6502-90904 English, Russian, Estonia, Lithuanian, Latvian, Kazakh, Arabic Q6502-90905 English, Czech, Hungarian, Polish, Slovak
Common hardware The product has three common fasteners. See Table 7-4 Common fasteners on page 285 for a description of these screw types.
Table 7-5 Replacing the printer engine assembly HP LaserJet 3050 all-in-one HP LaserJet 3052/3055 all-in-one Replacement print engine Replacement print engine ● ● Q6504-67001; 110 V print engine (new) Q6502-67001; 110 V print engine (new, HP LaserJet 3052 all-in-one) Q6504-69001; 110 V print engine (exchange) Q6503-67001; 110 V print engine (new, HP LaserJet 3055 all-in-one) or ● Q6504-67002; 220 V print engine (new) Q6502-69001; 110 V print engine (exchange, HP LaserJet 3052 all-in-one) Q6504-6
Table 7-5 Replacing the printer engine assembly (continued) HP LaserJet 3050 all-in-one HP LaserJet 3052/3055 all-in-one Scanner-top components Scanner-top components ● Scanner base-frame assembly ● Q6502-60117; ADF lid ● RL1-0376-000CN; Scanner sheet, grounding ● Q1636-40036; Hinge retainer clip (Solar lock) ● RK2-1214-000CN; Scanner flat, flexible cable ● Q6502-60117 Scanner assembly ● RM1-3076-000CN; Scanner cover, left ● 7121-8285; HP jewel, control panel ● RM1-3077-000CN; Scanner c
Diagrams Component locations, HP LaserJet 3050/3052/3055 all-in-one printer (product base) 1 2 Figure 7-1 Major components 288 1 Fuser assembly 2 Paper-pickup assembly Chapter 7 Parts and diagrams ENWW
3 4 5 6 7 2 1 Figure 7-2 Solenoid, sensors, switches, and motor ENWW 1 Print-cartridge-door switch 2 Power switch/power supply 3 Paper-width sensor 4 Paper-delivery sensor 5 Top-of-page sensor 6 Solenoid 7 Motor Diagrams 289
1 2 Figure 7-3 PCBs 1 Engine controller unit (ECU) 2 Formatter NOTE For the HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one, the LIU is attached to the formatter. The HP LaserJet 3052 all-in-one does not have fax capabilities, and does not use an LIU.
Formatter HP LaserJet 3050 J2 Main wiring Figure 7-4 Main wiring, HP LaserJet 3050 all-in-one scanner assembly ENWW Diagrams 291
P11 P18 J5 Formatter HP LaserJet 3050 P6 P17 J6 Figure 7-5 Main wiring, HP LaserJet 3050 all-in-one printer (product base) 292 Chapter 7 Parts and diagrams ENWW
1 2 3 4 5 Flatbed motor J2 J1 AC inverter PCA FFC cable Scanner PCB CCFL bulb CCD scanner assembly CCD sensor (soldered to PCB) 1 2 3 4 5 ADF motor ADF Paper sensors Front panel 11 10 9 8 7 6 5 4 3 2 1 LCD and key switch / LED PCA Scanner sub-assembly (SSA) P2 ENWW J1 ADF cover ADF detect ADF paper 1 ADF paper 2 P3 Formatter HP LaserJet 3052/3055 J2 J3 Figure 7-6 Main wiring, HP LaserJet 3052/3055 all-in-one scanner assembly Diagrams 293
P15 P22 P10 P21 J7 Formatter HP LaserJet 3052/3055 NOTE: Connector P22 is on the HP LaserJet 3055 all-in-one only.
Formatter PCA and LIU connectors J1 J2 P1 P6 P11 J5 J6 P17 P18 Figure 7-8 Formatter connections, HP LaserJet 3050 all-in-one Table 7-6 Formatter connections, HP LaserJet 3050 all-in-one ENWW Name Connection P1 ADF J1 Control panel J2 Scanner (CIS) J6 USB P18 LIU P17 Engine solenoid J5 Engine P11 Engine power P6 Speaker Diagrams 295
J1 J3 J2 P3 P10 J5 P15 J7 J8 P21 P22 NOTE: Connector P22 and its associated fax circuitry is for the HP LaserJet 3055 all-in-one only.
J1 J2 Figure 7-10 LIU connections, HP LaserJet 3050/3055 all-in-one Table 7-8 LIU connections, HP LaserJet 3050/3055 all-in-one ENWW Name Connection J1 Formatter J2 Fax ports Diagrams 297
HP LaserJet 3050 all-in-one scanner assembly Figure 7-11 Scanner assembly, HP LaserJet 3050 all-in-one 298 Chapter 7 Parts and diagrams ENWW
Table 7-9 Scanner assembly, HP LaserJet 3050 all-in-one ENWW Ref Description Part number Qty 1 Pickup-tray assembly, HP LaserJet 3050 all-in-one scanner RM1-3419-000CN 1 2 Control-panel assembly, HP LaserJet 3050 all-in-one See Figure 7-12 ADF components, HP LaserJet 3050 all-in-one on page 300.
ADF components, HP LaserJet 3050 all-in-one 12 13 3 3 13A 7 2 6 3 10 8A 8B 3 10 11 9 8C 4 Figure 7-12 ADF components, HP LaserJet 3050 all-in-one 300 Chapter 7 Parts and diagrams ENWW
Table 7-10 ADF components, HP LaserJet 3050 all-in-one ENWW Ref Description Part number Qty 2 Sheet, grounding, HP LaserJet 3050 all-in-one scanner RL1-0376-000CN 1 3 Screw, tap, M4X10 XB4-5401-009CN 6 4 Cover, left, HP LaserJet 3050 all-in-one scanner RM1-3076-000CN 1 6 Cover, right, HP LaserJet 3050 all-in-one scanner RM1-3077-000CN 1 7 Flat, flexible cable (FFC), HP LaserJet 3050 all-in-one scanner RK2-1214-000CN 1 8A Cover, top, HP LaserJet 3050 all-in-one RC1-8416-000CN 1
302 Ref Description Part number Qty Not shown Control-panel overlay, Thai, HP LaserJet 3050 all-in-one Q6504-00023 1 Not shown Control-panel overlay, Turkish, HP LaserJet 3050 all-in-one Q6504-00016 1 Not shown Control-panel overlay, Vietnamese, HP LaserJet 3050 all-in-one Q6504-00024 1 Chapter 7 Parts and diagrams ENWW
ENWW HP LaserJet 3050 all-in-one scanner assembly 303
Guide assembly, HP LaserJet 3050 all-in-one 20 20A 8 9 13 14 Figure 7-13 Guide assembly, HP LaserJet 3050 all-in-one 304 Chapter 7 Parts and diagrams ENWW
Table 7-11 Guide assembly, HP LaserJet 3050 all-in-one Ref Description Part number Qty Guide assembly, HP LaserJet 3050 all-in-one scanner RM1-3066-000CN 1 8 Scanner media-lever torsion spring (lever, pressure convert) RC1-2544-000CN 1 9 Scanner media lever (lever, pressure convert), HP LaserJet 3050 all-in-one RC1-8413-000CN 1 13 Spring, compression, white platen RU5-2196-000CN 3 14 Platen, white, HP LaserJet 3050 all-in-one scanner RF5-3235-000CN 1 20 Separation-pad assembly, HP La
HP LaserJet 3052/3055 all-in-one scanner assembly Figure 7-14 Scanner assembly, HP LaserJet 3052/3055 all-in-one 306 Chapter 7 Parts and diagrams ENWW
Table 7-12 Scanner assembly, HP LaserJet 3052/3055 all-in-one Ref ENWW Description Part number Qty Flatbed scanner assembly Q6502-60116 1 1 Flatbed scanner assembly (does not include the flatbed lid) Q6502-60116 1 2 ADF input tray Q3948-60214 1 3 Solar lock Q1636-40036 1 4 Shield, motor Q1636-40010 1 5 ADF/flatbed lid with packaging Q6502-60117 1 6 Scanner glass replacement kit Q6500-67904 1 HP LaserJet 3052/3055 all-in-one scanner assembly 307
Major assemblies, HP LaserJet 3052/3055 all-in-one Figure 7-15 Major assemblies, HP LaserJet 3052/3055 all-in-one 308 Chapter 7 Parts and diagrams ENWW
Table 7-13 Major assemblies, HP LaserJet 3052/3055 all-in-one ENWW Ref Description Part number Qty 1 ADF cover replacement, HP LaserJet 3052/3055 all-in-one Q6502-67901 1 2 ADF cleanout/comb C7309-40153 1 3 Kit, replacement, ADF input-tray flag Q3948-67902 1 4 ADF pickup-roller assembly 5851-2559 1 5 ADF separation pad Q2665-60125 1 HP LaserJet 3052/3055 all-in-one scanner assembly 309
Scanner components, HP LaserJet 3052/3055 all-in-one Figure 7-16 Scanner components, HP LaserJet 3052/3055 all-in-one 310 Chapter 7 Parts and diagrams ENWW
Table 7-14 Scanner components, HP LaserJet 3052/3055 all-in-one ENWW Ref Description Part number Qty 1 Bezel, Arabic, HP LaserJet 3052 all-in-one Q6502-40026 1 1 Bezel, blank painted, HP LaserJet 3052 all-in-one Q6502-40002 1 1 Bezel, blank unpainted, HP LaserJet 3052 all-in-one Q6502-40001 1 1 Bezel, Chinese simplified, HP LaserJet 3052 all-in-one Q6502-40029 1 1 Bezel, Chinese traditional , HP LaserJet 3052 all-in-one Q6502-40027 1 1 Bezel, Czech, HP LaserJet 3052 all-in-one Q6
312 Ref Description Part number Qty 1 Bezel, Danish, HP LaserJet 3055 all-in-one Q6503-40013 1 1 Bezel, Dutch, HP LaserJet 3055 all-in-one Q6503-40008 1 1 Bezel.
ENWW HP LaserJet 3052/3055 all-in-one scanner assembly 313
Printer (product base), HP LaserJet 3050/3052/3055 all-inone 1 2 3 Figure 7-17 Printer (product base), HP LaserJet 3050/3052/3055 all-in-one 314 Chapter 7 Parts and diagrams ENWW
Table 7-15 Printer (product base), HP LaserJet 3050/3052/3055 all-in-one Ref Description Part number Qty 1 Print engine HP LaserJet 3050 all-in-one, replacement 110 V Q6504-67001 1 1 Print engine HP LaserJet 3050 all-in-one, replacement 220 V Q6504-67002 1 1 Print engine HP LaserJet 3050 all-in-one, exchange 110 V Q6504-69001 1 1 Print engine HP LaserJet 3050 all-in-one, exchange 220 V Q6504-69002 1 1 Print engine HP LaserJet 3052 all-in-one, replacement 110 V Q6502-67001 1 1 Print
External covers, printer (product base) 6 3 2 1 7 5 4 Figure 7-18 External covers, printer (product base) 316 Chapter 7 Parts and diagrams ENWW
Table 7-16 External covers, printer (product base) ENWW Ref Description Part number Qty 1 Door, print cartridge RC1-8372-000CN 1 2 Cover, right RC1-8374-000CN 1 3 Scanner cushion RC1-2476-000CN 2 4 Cover, front RL1-1160-000CN 1 5 Cover, left RC1-8373-000CN 1 6 Cover, rear RC1-2474-000CN 1 7 Cover, top (scanner support-frame), printer RL1-1161-000CN 1 Printer (product base), HP LaserJet 3050/3052/3055 all-in-one 317
Formatter and LIU Figure 7-19 Formatter and LIU 318 Chapter 7 Parts and diagrams ENWW
Table 7-17 Formatter and LIU ENWW Ref Description Part number Qty 1 Formatter, HP LaserJet 3050 all-in-one Q7844-60002 1 1 Formatter, HP LaserJet 3052 all-in-one Q7528-60001 1 1 Formatter, HP LaserJet 3055 all-in-one Q7529-60002 1 2 LIU, HP LaserJet 3050 all-in-one, US/WW Q2663-60001 1 2 LIU, HP LaserJet 3050 all-in-one, EMEA Q2687-60002 1 2 LIU, HP LaserJet 3055 all-in-one, US/WW Q2663-60001 1 2 LIU, HP LaserJet 3055 all-in-one, EMEA Q2687-60002 1 Printer (product base), H
Internal components, printer (product base) 501 7 1 6 B (J202) (J203) (PS803) (PS802) 502 (PS801) B 20 21 21A 501 A A 8 15 Figure 7-20 Internal components, printer (product base) (1 of 3) 320 Chapter 7 Parts and diagrams ENWW
Table 7-18 Internal components, printer (product base) (1 of 3) ENWW Ref Description Part number Qty 1 Panel, rear RC1-8368-000CN 1 6 Separation-pad assembly, printer RM1-2048-000CN 1 7 Transfer-roller assembly RM1-2062-000CN 1 8 Power-supply assembly, 110-127 V RM1-3402-000CN 1 8 Power-supply assembly, 220-240 V RM1-3403-000CN 1 15 Screw, rs, M3X8 XA9-1420-000CN 4 20 Fuser, 110-127V RM1-3044-000CN 1 20 Fuser, 220-240V RM1-3045-000CN 1 21 Pickup assembly RM1-3043-000C
15 6 (J904) (J801) A B (J201) 7 14 B A 10 9 Figure 7-21 Internal components, printer (product base) (2 of 3) 322 Chapter 7 Parts and diagrams ENWW
Table 7-19 Internal components, printer (product base) (2 of 3) ENWW Ref Description Part number Qty 6 Laser/scanner assembly RM1-2033-030CN 1 7 Engine-controller-PCB assembly RM1-3404-000CN 1 8 Spring, compression RU5-2492-000CN 2 9 Latch, left RC1-2498-000CN 1 10 Latch, right RC1-2499-000CN 1 14 Screw, rs, M3X8 XA9-1420-000CN 2 15 Screw, rs, M2X10 XA9-1501-000CN 4 Printer (product base), HP LaserJet 3050/3052/3055 all-in-one 323
22 4 2 5 26 (J3) (SP1) 24 (M1) (J001) Figure 7-22 Internal components, printer (product base) (3 of 3) 324 Chapter 7 Parts and diagrams ENWW
Table 7-20 Internal components, printer (product base) (3 of 3) ENWW Ref Description Part number Qty 2 Bushing RC1-1953-000CN 1 5 Link, coupling lower RC1-2485-000CN 1 6 Link, coupling top RC1-2494-000CN 1 22 Screw, w/washer, M3x8 XA9-1420-000CN 1 24 Motor, stepping, dc RK2-0777-000CN 1 26 Speaker assembly RM1-3410-000CN 1 Printer (product base), HP LaserJet 3050/3052/3055 all-in-one 325
Alphabetical parts list Table 7-21 Alphabetical parts list 326 Description Part number Table and page ADF cleanout/comb C7309-40153 Major assemblies, HP LaserJet 3052/3055 all-in-one on page 309 ADF cover replacement, HP LaserJet 3052/3055 all-in-one Q6502-67901 Major assemblies, HP LaserJet 3052/3055 all-in-one on page 309 ADF input tray Q3948-60214 Scanner assembly, HP LaserJet 3052/3055 all-inone on page 307 ADF pickup-roller assembly 5851-2559 Major assemblies, HP LaserJet 3052/3055 all-
Table 7-21 Alphabetical parts list (continued) ENWW Description Part number Table and page Bezel, Chinese traditional, HP LaserJet 3055 all-in-one Q6503-40023 Scanner components, HP LaserJet 3052/3055 all-inone on page 311 Bezel, Czech, HP LaserJet 3052 all-in-one Q6502-40019 Scanner components, HP LaserJet 3052/3055 all-inone on page 311 Bezel, Czech, HP LaserJet 3055 all-in-one Q6503-40015 Scanner components, HP LaserJet 3052/3055 all-inone on page 311 Bezel, Danish, HP LaserJet 3055 all-in-
Table 7-21 Alphabetical parts list (continued) 328 Description Part number Table and page Bezel, Greek, HP LaserJet 3055 all-in-one Q6503-40020 Scanner components, HP LaserJet 3052/3055 all-inone on page 311 Bezel, Hebrew, HP LaserJet 3052 all-in-one Q6502-40025 Scanner components, HP LaserJet 3052/3055 all-inone on page 311 Bezel, Hebrew, HP LaserJet 3055 all-in-one Q6503-40021 Scanner components, HP LaserJet 3052/3055 all-inone on page 311 Bezel, Hungarian HP LaserJet 3055 all-in-one Q6505-
Table 7-21 Alphabetical parts list (continued) ENWW Description Part number Table and page Bezel, Russian, HP LaserJet 3055 all-in-one Q6503-40014 Scanner components, HP LaserJet 3052/3055 all-inone on page 311 Bezel, Slovak, HP LaserJet 3052 all-in-one Q6502-40022 Scanner components, HP LaserJet 3052/3055 all-inone on page 311 Bezel, Slovak, HP LaserJet 3055 all-in-one Q6505-40018 Scanner components, HP LaserJet 3052/3055 all-inone on page 311 Bezel, Spanish, HP LaserJet 3052 all-in-one Q650
Table 7-21 Alphabetical parts list (continued) 330 Description Part number Table and page Control panel, HP LaserJet 3052 all-in-one Q6502-60101 Scanner components, HP LaserJet 3052/3055 all-inone on page 311 Control panel, HP LaserJet 3055 all-in-one Q6503-60101 Scanner components, HP LaserJet 3052/3055 all-inone on page 311 Control-panel assembly, HP LaserJet 3050 all-in-one RK2-1209-000CN ADF components, HP LaserJet 3050 all-in-one on page 301 Control-panel assembly, HP LaserJet 3050 all-in
Table 7-21 Alphabetical parts list (continued) ENWW Description Part number Table and page Control-panel overlay, Thai, HP LaserJet 3050 all-in-one Q6504-00023 ADF components, HP LaserJet 3050 all-in-one on page 301 Control-panel overlay, Turkish, HP LaserJet 3050 all-in-one Q6504-00016 ADF components, HP LaserJet 3050 all-in-one on page 301 Control-panel overlay, Vietnamese, HP LaserJet 3050 all-in-one Q6504-00024 ADF components, HP LaserJet 3050 all-in-one on page 301 Cover, front RL1-1160-
Table 7-21 Alphabetical parts list (continued) 332 Description Part number Table and page Fuser, 110-127V RM1-3044-000CN Internal components, printer (product base) (1 of 3) on page 321 Fuser, 220-240V RM1-3045-000CN Internal components, printer (product base) (1 of 3) on page 321 Guide assembly, HP LaserJet 3050 all-in-one scanner RM1-3066-000CN ADF components, HP LaserJet 3050 all-in-one on page 301 Guide assembly, HP LaserJet 3050 all-in-one scanner RM1-3066-000CN Guide assembly, HP Laser
Table 7-21 Alphabetical parts list (continued) ENWW Description Part number Table and page Pickup assembly RM1-3043-000CN Internal components, printer (product base) (1 of 3) on page 321 Pickup tray assembly RM1-3060-000CN Printer (product base), HP LaserJet 3050/3052/3055 all-in-one on page 315 Pickup-roller assembly, HP LaserJet 3050 all-in-one scanner RM1-0885-000CN ADF components, HP LaserJet 3050 all-in-one on page 301 Pickup-tray assembly, HP LaserJet 3050 all-in-one scanner RM1-3419-00
Table 7-21 Alphabetical parts list (continued) 334 Description Part number Table and page Scanner cushion RC1-2476-000CN External covers, printer (product base) on page 317 Scanner frame assembly, HP LaserJet 3050 all-in-one RM1-3063-000CN ADF components, HP LaserJet 3050 all-in-one on page 301 Scanner glass replacement kit Q6500-67904 Scanner assembly, HP LaserJet 3052/3055 all-inone on page 307 Scanner link assembly, kit, HP LaserJet 3052/3055 all-in-one Q6502-67903 Scanner components, HP
Table 7-21 Alphabetical parts list (continued) ENWW Description Part number Table and page Separation-pad set, HP LaserJet 3050 all-in-one scanner RM1-0891-000CN Guide assembly, HP LaserJet 3050 all-in-one on page 305 Sheet, grounding, HP LaserJet 3050 all-in-one scanner RL1-0376-000CN ADF components, HP LaserJet 3050 all-in-one on page 301 Shield, motor Q1636-40010 Scanner assembly, HP LaserJet 3052/3055 all-inone on page 307 Solar lock Q1636-40036 Scanner assembly, HP LaserJet 3052/3055 al
Numerical parts list Table 7-22 Numerical parts list 336 Part number Description Table and page 5185-7441 Scanner-hinge tool ADF components, HP LaserJet 3050 all-in-one on page 301 5851-2559 ADF pickup-roller assembly Major assemblies, HP LaserJet 3052/3055 all-in-one on page 309 7121-8285 HP jewel Scanner assembly, HP LaserJet 3050 all-in-one on page 299 7121-8285 HP jewel Printer (product base), HP LaserJet 3050/3052/3055 all-in-one on page 315 C7309-40153 ADF cleanout/comb Major assemb
Table 7-22 Numerical parts list (continued) ENWW Part number Description Table and page Q3948-60214 ADF input tray Scanner assembly, HP LaserJet 3052/3055 all-inone on page 307 Q3948-67902 Kit, replacement, ADF input-tray flag Major assemblies, HP LaserJet 3052/3055 all-in-one on page 309 Q6500-67904 Scanner glass replacement kit Scanner assembly, HP LaserJet 3052/3055 all-inone on page 307 Q6502-40001 Bezel, blank unpainted, HP LaserJet 3052 all-in-one Scanner components, HP LaserJet 3052/3
Table 7-22 Numerical parts list (continued) 338 Part number Description Table and page Q6502-40020 Bezel, Hungarian, HP LaserJet 3052 all-in-one Scanner components, HP LaserJet 3052/3055 all-inone on page 311 Q6502-40021 Bezel, Polish, HP LaserJet 3052 all-in-one Scanner components, HP LaserJet 3052/3055 all-inone on page 311 Q6502-40022 Bezel, Slovak, HP LaserJet 3052 all-in-one Scanner components, HP LaserJet 3052/3055 all-inone on page 311 Q6502-40023 Bezel, Turkish, HP LaserJet 3052 all-i
Table 7-22 Numerical parts list (continued) ENWW Part number Description Table and page Q6502-67001 Print engine HP LaserJet 3052 all-in-one, replacement 110 V Printer (product base), HP LaserJet 3050/3052/3055 all-in-one on page 315 Q6502-67002 Print engine HP LaserJet 3052 all-in-one, replacement 220 V Printer (product base), HP LaserJet 3050/3052/3055 all-in-one on page 315 Q6502-67901 ADF cover replacement, HP LaserJet 3052/3055 all-in-one Major assemblies, HP LaserJet 3052/3055 all-in-one
Table 7-22 Numerical parts list (continued) 340 Part number Description Table and page Q6503-40015 Bezel, Czech, HP LaserJet 3055 all-in-one Scanner components, HP LaserJet 3052/3055 all-inone on page 311 Q6503-40016 Bezel, Finnish, HP LaserJet 3052 all-in-one Scanner components, HP LaserJet 3052/3055 all-inone on page 311 Q6503-40017 Bezel, Polish, HP LaserJet 3055 all-in-one Scanner components, HP LaserJet 3052/3055 all-inone on page 311 Q6503-40019 Bezel, Turkish, HP LaserJet 3055 all-in-o
Table 7-22 Numerical parts list (continued) ENWW Part number Description Table and page Q6504-00006 Control-panel overlay, Italian, HP LaserJet 3050 all-in-one ADF components, HP LaserJet 3050 all-in-one on page 301 Q6504-00007 Control-panel overlay, Swedish, HP LaserJet 3050 all-in-one ADF components, HP LaserJet 3050 all-in-one on page 301 Q6504-00008 Control-panel overlay, Norwegian, HP LaserJet 3050 all-in-one ADF components, HP LaserJet 3050 all-in-one on page 301 Q6504-00009 Control-pan
Table 7-22 Numerical parts list (continued) 342 Part number Description Table and page Q6504-69001 Print engine HP LaserJet 3050 all-in-one, exchange 110 V Printer (product base), HP LaserJet 3050/3052/3055 all-in-one on page 315 Q6504-69002 Print engine HP LaserJet 3050 all-in-one, exchange 220 V Printer (product base), HP LaserJet 3050/3052/3055 all-in-one on page 315 Q6505-40003 Bezel.
Table 7-22 Numerical parts list (continued) ENWW Part number Description Table and page RC1-8372-000CN Door, print cartridge External covers, printer (product base) on page 317 RC1-8373-000CN Cover, left External covers, printer (product base) on page 317 RC1-8374-000CN Cover, right External covers, printer (product base) on page 317 RC1-8413-000CN Scanner media lever (lever, pressure convert), HP LaserJet 3050 all-in-one Guide assembly, HP LaserJet 3050 all-in-one on page 305 RC1-8416-000C
Table 7-22 Numerical parts list (continued) 344 Part number Description Table and page RM1-2062-000CN Transfer-roller assembly Internal components, printer (product base) (1 of 3) on page 321 RM1-3043-000CN Pickup assembly Internal components, printer (product base) (1 of 3) on page 321 RM1-3044-000CN Fuser, 110-127V Internal components, printer (product base) (1 of 3) on page 321 RM1-3045-000CN Fuser, 220-240V Internal components, printer (product base) (1 of 3) on page 321 RM1-3059-000CN
Table 7-22 Numerical parts list (continued) ENWW Part number Description Table and page RU5-2492-000CN Spring, compression Internal components, printer (product base) (2 of 3) on page 323 RU5-2885-000CN Spring, compression, HP LaserJet 3050 all-in-one scanner ADF components, HP LaserJet 3050 all-in-one on page 301 See Figure 7-12 ADF components, HP LaserJet 3050 all-inone on page 300.
346 Chapter 7 Parts and diagrams ENWW
A ENWW All-in-one specifications ● Physical specifications ● Electrical specifications ● Power consumption ● Environmental specifications ● Acoustic emissions 347
Physical specifications Table A-1 Physical specifications Product Height Depth Width Weight HP LaserJet 3050 all-in-one 459 mm (18.07 inches) 443 mm (17.44 inches) 429 mm (16.89 inches) 10.0 kg (22.0 lb) HP LaserJet 3052 all-in-one 393 mm (15.47 inches) 406 mm (15.98 inches) 497 mm (19.56 inches) 12.4 kg (27.4 lb) HP LaserJet 3055 all-in-one 393 mm (15.47 inches) 406 mm (15.98 inches) 497 mm (19.56 inches) 12.4 kg (27.
Power consumption Table A-3 Power consumption (average, in watts)1 Product model Printing2 Copying2 Ready2 PowerSave Off HP LaserJet 3050 all-in-one 380 W 380 W 7W 5W 0W HP LaserJet 3052 all-in-one 380 W 380 W 14 W 9W 0W HP LaserJet 3055 all-in-one 380 W 380 W 14 W 9W 0W Values are subject to change. See www.hp.com/support/lj3050, www.hp.com/support/lj3052, and www.hp.com/support/ lj3055 for current information.
Acoustic emissions Table A-5 Acoustic emissions (HP LaserJet 3050 all-in-one)1 1 2 3 Sound Power Level Declared per ISO 92962 Printing (18 ppm)3 LWAd = 6.3 Bels (A) [63 dB (A)] Ready Essentially Inaudible Sound Pressure Level—Bystander Position Declared per ISO 92962 Printing (18 ppm)3 LpAm = 49 dB(A) Ready Essentially Inaudible Configuration tested: HP LaserJet 3050 all-in-one, A10, A4 Acoustic values are subject to change. See www.hp.com/support/lj3050 for current information.
B ENWW Service and support 351
Hewlett-Packard limited warranty statement HP PRODUCT DURATION OF LIMITED WARRANTY HP LaserJet 3052/3055 all-in-one One year limited warranty HP warrants to you, the end-user customer, that HP hardware and accessories will be free from defects in materials and workmanship after the date of purchase, for the period specified above. If HP receives notice of such defects during the warranty period, HP will, at its option, either repair or replace products which prove to be defective.
Print Cartridge Limited Warranty Statement This HP product is warranted to be free from defects in materials and workmanship. This warranty does not apply to products that (a) have been refilled, refurbished, remanufactured, or tampered with in any way, (b) experience problems resulting from misuse, improper storage, or operation outside of the published environmental specifications for the printer product, or (c) exhibit wear from ordinary use.
354 Appendix B Service and support ENWW
C ENWW Regulatory information ● FCC compliance ● Environmental Product Stewardship program ● Telephone Consumer Protection Act (United States) ● IC CS-03 requirements ● EU statement for telecom operation ● New Zealand telecom statements ● Declaration of conformity (HP LaserJet 3390, 3392, 3055, and 3050) ● Declaration of conformity (HP LaserJet 3052) ● Country-/region-specific safety statements 355
FCC compliance This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy. If it is not installed and used in accordance with the instructions, it may cause harmful interference to radio communications.
Environmental Product Stewardship program Protecting the environment Hewlett-Packard Company is committed to providing quality products in an environmentally sound manner. This product has been designed with several attributes to minimize impacts on our environment. Ozone production This product generates no appreciable ozone gas (O3).
HP LaserJet printing supplies It's easy to return and recycle your empty HP LaserJet print cartridges—free of charge—with HP Planet Partners. HP is committed to providing inventive, high-quality products and services that are environmentally sound, from product design and manufacturing to distribution, operation, and recycling processes.
Material restrictions This HP product contains mercury in the fluorescent lamp or scanner that may require special handling at end-of-life. This HP product contains a battery that might require special handling at end of life. Type: Lithium Carbon Monofluoride (solid button cell) Weight: approx.
Taiwan For recycling information, you can contact www.hp.com/go/recycle or contact your local authorities or the Electronics Industry Alliance: www.eiae.org . Disposal of waste equipment by users in private household in the European Union This symbol on the product or on its packaging indicates that this product must not be disposed of with your other household waste.
ENWW ● Hewlett-Packard's end-of-life product return and recycling program ● MSDS Environmental Product Stewardship program 361
Telephone Consumer Protection Act (United States) The Telephone Consumer Protection Act of 1991 makes it unlawful for any person to use a computer or other electronic device, including fax machines, to send any message unless such message clearly contains, in a margin at the top or bottom of each transmitted page or on the first page of the transmission, the date and time it is sent and an identification of the business, other entity, or individual sending the message and the telephone number of the sending
EU statement for telecom operation This product is intended to be connected to the analog Public Switched Telecommunication Networks (PSTN) of European Economic Area (EEA) countries/regions. It meets requirements of EU R&TTE Directive 1999/5/EC (Annex II) and carries appropriate CE conformity marking. For more details, see Declaration of Conformity issued by the manufacturer in another section of this manual.
Declaration of conformity (HP LaserJet 3390, 3392, 3055, and 3050) Declaration of Conformity according to ISO/IEC Guide 22 and EN 45014 Manufacturer's Name: Manufacturer's Address: Hewlett-Packard Company 11311 Chinden Boulevard, Boise, Idaho 83714-1021, USA declares, that the product Product Names: HP LaserJet 3390, 3392, 3055, and 3050 Regulatory Model Number3) Toner Cartridges5) Product Options: BOISB-0402-03, BOISB-0405-03, and BOISB-0405-04 Q5949A, Q5949X, and Q2612A ALL conforms to the following
Declaration of conformity (HP LaserJet 3052) Declaration of Conformity according to ISO/IEC Guide 22 and EN 45014 Manufacturer's Name: Manufacturer's Address: Hewlett-Packard Company 11311 Chinden Boulevard, Boise, Idaho 83714-1021, USA declares, that the product Product Names: HP LaserJet 3052 Regulatory Model Number3) Toner Cartridges Product Options: BOISB-0405-02 Q2612A ALL conforms to the following Product Specifications: Safety: IEC 60950-1:2001 / EN60950-1: 2001 \ A11 IEC 60825-1:1993 + A1 +A2
Country-/region-specific safety statements Laser safety statement The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration has implemented regulations for laser products manufactured since August 1, 1976. Compliance is mandatory for products marketed in the United States. The printer is certified as a "Class 1" laser product under the U.S.
Finnish laser statement LASERTURVALLISUUS LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT HP LaserJet 3050/3052/3055 all-in-one -laserkirjoitin on käyttäjän kannalta turvallinen luokan 1 laserlaite. Normaalissa käytössä kirjoittimen suojakotelointi estää lasersäteen pääsyn laitteen ulkopuolelle. Laitteen turvallisuusluokka on määritetty standardin EN60825-1 (1994) mukaisesti.
368 Appendix C Regulatory information ENWW
Index A abbreviations, fax 273 ac bias 79 ac power distribution 77 accessibility features 4 accessories, ordering 38 acoustic emissions 350 Add or Remove Programs, Windows 16 ADF cleaning pickup-roller assembly 44 cleaning scanner glass, HP LaserJet 3050 all-in-one 40 cleaning scanner glass, HP LaserJet 3052/3055 all-in-one 42 components, HP LaserJet 3050 all-in-one 300 feeding problems, troubleshooting 221 input tray, nstalling 31 input tray, removing 132 input-tray flag, removing 142 jam detection, HP La
box contents, HP LaserJet 3052/3055 all-in-one 29 flat flexible, removing parts 100 flat, flexible, part numbers 301, 331, 343 part numbers 283 CALIBRATION period scanner, HP LaseJet 3052/3055 all-in-one 66 scanner, HP LaserJet 3050 allin-one 65 calibration, scanner 49 Canadian DOC statement 366 capacity priority input slot 21 trays 2, 3 card stock priority input slot, loading 36 specifications 21 cartridge area jams, clearing 212 cartridge-door part number 317, 331, 343 removing 169 cartridge-door release,
feeding problems, troubleshooting 221 image quality, troubleshooting 232 loading originals in ADF 34 loading originals on flatbed scanner 34 operations 70 cords box contents, HP LaserJet 3050 all-in-one 28 box contents, HP LaserJet 3052/3055 all-in-one 29 part numbers 283 country settings 254, 257 covers, paper specifications 21 covers, part numbers 321, 332, 342 covers, removing front 172 fuser 170 print-cartridge 169 rear 170 scanner side, HP LaserJet 3050 all-in-one 109 scanner top, HP LaserJet 3050 all-
priority input slot, loading 36 specifications 21 Environmental Product Stewardship program 357 environmental specifications 26, 349 error messages control panel 199 critical 205 error-correction mode (ECM) 260 ESD (electrostatic discharge) 100 European Union telecom operation statement 363 waste disposal requirements 360 Event log 54 event log codes 209 exit rollers, fuser assembly 80 extended warranty 353 F factory default settings regional versions 257 restoring 256 fasteners, types of 285 fax abbreviati
Help tab, HP ToolboxFX 57 help, printer drivers 14 high-voltage contacts check 249 high-voltage power supply, operations 78 hinge retainer clip, removing 135 hinge tool, scanner 283 HOME FIND period 66 hook state 96 hook switch control 97 HP Customer Care Online 282 HP fraud hotline 39 HP LaserJet 3050 all-in-one ADF component diagrams 300 box contents 28 component locations 288 control panel 7 features 2 guide assembly diagrams 304 operations 83 parts, locating 5 removing and replacing parts 106 scanner as
lift plate 80 light copies or scans, troubleshooting 234 lights, all-in-one control panel startup messages 71 lights, scanning system 87 line current control, fax 97 lines, troubleshooting copies or scans 235 printed pages 226 white, vertical 231 link assemblies, removing HP LaserJet 3050 all-in-one 107 HP LaserJet 3052/3055 all-inone 136 link assembly, part numbers HP LaserJet 3052/3055 all-inone 312, 334, 339 Linux drivers 13 LIU connectors 297 data path 96 hook switch control 97 operations 70 regional ve
non-HP supplies 39 NVRAM included 71 init 256 super init 255 O off-hook 97 on-hook 97 on/off switch, locating HP LaserJet 3050 all-in-one 6 HP LaserJet 3052/3055 all-inone 9 one-touch report 259 Online Customer Care, HP 282 online help, printer drivers 14 operating environment, specifications 26, 349 operating systems supported 13 operations ADF, HP LaserJet 3050 all-inone 83 ADF, HP LaserJet 3052/3055 all-in-one 90 boot process 71 components 64 ECU 75 fax 92 formatter 70 HP LaserJet 3050 all-in-one 83 HP L
ADF, HP LaserJet 3052/3055 all-in-one 307, 326, 338 bins 315, 333, 344 control panel overlays, HP LaserJet 3050 all-in-one 301, 330, 336 control panel overlays, HP LaserJet 3052/3055 all-in-one 311, 326, 338 control panel, HP LaserJet 3050 all-in-one 299, 330, 345 covers 317, 321, 331, 332, 342, 343 cushion, scanner 317, 334, 342 documentation 284 engine-controller-PCB assembly 323, 331, 344 flatbed, HP LaserJet 3052/3055 all-in-one 307, 331, 338 guide assembly, HP LaserJet 3050 all-in-one 304 HP LaserJet 3
door release, locating on HP LaserJet 3052/3055 all-inone 8 drum-rotation check 248 extending life of 72 HP fraud hotline 39 installing 32 non-HP 39 operations 79, 80 pages per 2, 3 part numbers 38, 283 recycling 39, 358 redistributing toner 223 removing 158 replacing 39 status, viewing with HP ToolboxFX 54 storing 38, 349 warranty 353 print density troubleshooting 225 voltage operations 78 print path feeding operations 80 PRINT period 68 print quality cleaning page, printing 47 copies and scans 232 HP Tool
PS drivers selecting 14 supported 13 PSTN 92 pulse dialing 97 Q quality cleaning page, printing 47 copies and scans 232 HP ToolboxFX settings 59 repetitive defects 278 troubleshooting 223 types of problems 224 R RAM 71 READY period scanner, HP LaserJet 3050 allin-one 65 scanner, HP LaserJet 3052/3055 all-in-one 66 reams, breaking 216 rear cover part number 317, 321, 331, 332, 342 removing 170 receive codes, fax 261 receiving faxes distinctive ring 93 log, HP ToolboxFX 57 troubleshooting 242 recovery, firmwa
link assemblies, HP LaserJet 3052/3055 all-in-one 136 LIU 178 load-arm assembly, ADF 143 main motor 190 media input tray 163 media lever and torsion spring, HP LaserJet 3050 all-in-one 115 order of 103 paper-pickup assembly 194 parts 100 pickup roller, HP LaserJet 3050 all-in-one 130 power supply 175 print cartridges 39, 158 print-cartridge door 169 printer engine assembly 285 printer parts 156 rear cover 170 scanner assembly 103 scanner assembly, HP LaserJet 3050 all-in-one 118 scanner assembly, HP LaserJe
features 4, 27 image quality, troubleshooting 232 loading originals in ADF 34 loading originals on flatbed scanner 34 text, troubleshooting 237 scanning exposure stage, image formation process 79 scatter, toner 231 schedules, HP Technical Training 282 screwdrivers, required 101 screws self-tapping 100 types of 285 secondary service menu 251 security, computer and network 92 security-lock slot, locating HP LaserJet 3050 all-in-one 6 HP LaserJet 3052/3055 all-inone 9 self test, continuous 251 self-tapping scr
HP LaserJet 3052/3055 all-inone 3 processor 70 speed dial report 259 spots printed pages 225, 231 scanned images 236 STAGE period scanner, HP LaserJet 3050 allin-one 65 scanner, HP LaserJet 3052/3055 all-in-one 66 stages image formation 79, 247 scanner operations 65 stall jams, ADF 91 STANDBY period scanner, HP LaserJet 3052/3055 all-in-one 66 star screws 285 startup messages 71 static eliminator, operations 79 static, precautions 100 stationary jams 82 status alerts, HP ToolboxFX 54 viewing with HP Toolbox
characters, partially printed 225, 229 checklist 196 cleaning page 47 contrast, copies or scans 234 control panel display 246 control panel messages 199 control panel, functional checks 247 copier feeding problems 221 copy quality 232 country/region settings 254 critical error messages 205 curled pages 216, 230 dots or streaks in scans 236 drum-rotation 248 DSL 245 event log codes 209 fax error-correction mode (ECM) 260 fax receive codes 261 fax reports 259 fax send codes 265 fax T.
software components 16 system requirements 27 uninstalling software 16 wire harnesses, replacing 100 wiring diagrams 291 wrapping jams 82 wrinkled pages, troubleshooting 216 writing stage, image formation process 79 ENWW Index 383
384 Index ENWW
© 2006 Hewlett-Packard Development Company, L.P. www.hp.
