HP LaserJet 1018 Service Manual
HP LaserJet 1018 printer Service Manual
Copyright Information Trademark Credits © 2006 Copyright Hewlett-Packard Development Company, L.P. Microsoft® and Windows® are U.S. registered trademarks of the Microsoft company. Reproduction, adaptation or translation without prior written permission is prohibited except as allowed under the copyright laws. The information contained in this document is subject to change without notice.
Table of contents 1 Product Information Product configuration ............................................................................................................................. 2 Overview of product ............................................................................................................................... 3 HP LaserJet 1018 printer ...................................................................................................... 3 Model and serial numbers ................
Main input tray .................................................................................................................... 21 Priority feed slot .................................................................................................................. 21 Specific types of media ....................................................................................................... 21 Setting media types ........................................................................................
Replacing the pickup roller ................................................................................................. 57 Replacing the separation pad ............................................................................................. 60 Replacing the main input tray (paper-pickup tray assembly) ............................................. 62 Replacing the output-bin extension (delivery-tray assembly) ............................................. 63 Covers .................................
Accessories and consumables .......................................................................................................... 117 Accessories ....................................................................................................................... 117 Common hardware ........................................................................................................... 118 How to use the parts lists and diagrams .....................................................................
1 Product Information This chapter provides general product information for the HP LaserJet 1018 printer.
Product configuration The HP LaserJet 1018 printer (HP LJ 1018) offers the following features: 2 ● Prints up to 12 ppm ● 10 seconds or less to first page out ● FastRes 1200: 1200 dpi effective output quality (600 x 600 x 2 dpi with HP Resolution Enhancement technology [REt]) ● 150-sheet input capacity (75-g/m2 [20-lb] media) ● 125-sheet output bin capacity ● A priority feed slot ● EconoMode (saves toner) ● Prints watermarks, booklets, and multiple pages per sheet (N-up), and can print the f
Overview of product HP LaserJet 1018 printer Figure 1-1 Front and right-side view ENWW 1 Attention light 2 Ready light 3 Print-cartridge door 4 Output-media support 5 Priority feed slot 6 150-sheet main input tray 7 Output bin Overview of product 3
8 10 9 11 Figure 1-2 Back and left-side view 4 8 On/off switch 9 Power receptacle 10 USB port 11 Separation pad Chapter 1 Product Information ENWW
Model and serial numbers The model number and serial number are listed on an identification label located on the back of the product. The serial number contains information about the country/region of origin, and the revision level, production code, and production number of the product. The label also contains power-rating and regulatory information.
Product specifications This section lists the specifications for the HP LaserJet 1018 printer. Physical specifications Table 1-1 Physical specifications Model Height Depth Width Weight HP LaserJet 1018 printer 209 mm (8.3 inches) 242 mm (9.5 inches) 370 mm (14.6 inches) 5.9 kg (13.
Electrical specifications WARNING! Power requirements are based on the country/region where the printer is sold. Do not convert operating voltages. This might damage the printer and void the product warranty. Table 1-4 Power requirements Specification 110-volt models 220-volt models Power requirements 110–127 V (±10%) 220–240 V (±10%) 50/60 Hz (±2 Hz) 50/60 Hz (±2 Hz) 4.0 amps 2.3 amps Rated current WARNING! Power sources are not interchangeable.
Acoustic emissions Table 1-6 Acoustic emissions1 1 8 Sound power level Declared per ISO 9296 Printing LWAd = 6.2 Bels (A) [62 dB (A)] Ready Inaudible Sound pressure level—Bystander position Declared per ISO 9296 Printing LpAm = 49 dB (A) Ready Inaudible Values are subject to change. See http://www.hp.com/support/lj1018 for current information. Configuration tested: HP LaserJet 1018 printer using the standard tray, A4 paper, and simplex, continuous printing.
Extended service plan In most countries/regions, extended service plans are available for hardware and technical support coverage for terms of up to three years. The service plan must be purchased during the hardware product's period of original warranty validity (typically one year).
Print-cartridge information The print cartridge is designed to simplify replacement of the major consumable parts. The print cartridge contains the printing mechanism and a supply of toner. The HP LaserJet 1018 ships with a 1000-page introductory print cartridge. The standard replacement print-cartridge life is 2,000 pages, in accordance with ISO/IEC 19752. NOTE Actual print cartridge life depends on specific usage.
Regulatory information 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.
Laser statement for Finland LASERTURVALLISUUS LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT HP LaserJet 1018 -laserkirjoitin on käyttäjän kannalta turvallinen luokan 1 laserlaite. Normaalissa käytössä kirjoittimen suojakotelointi estää lasersäteen pääsyn laitteen ulkopuolelle. Laitteen turvallisuusluokka on määritetty standardin EN 60825-1 (1994) mukaisesti.
2 Installation and operation This chapter provides an overview of the appropriate operating environment, describes the control panel, describes media requirements, and describes how to load print media.
Operating environment Place the product on a sturdy, level surface in a well-ventilated area that meets the following environmental requirements: ● Temperature: 10° to 32.5°C (50° to 90.
Identifying the control-panel components The printer control panel has two lights. These lights produce patterns that identify printer status. Figure 2-2 Control-panel lights ENWW 1 Attention light: Indicates that the print-cartridge door is open, print cartridge is missing, and other errors. 2 Ready light: Indicates that the printer is ready to print.
Media specifications The printer accepts a variety of media. Properties such as weight, grain, and moisture content are important factors that affect printer performance and output quality. Media should conform to the guidelines in the User Guide. Media that does not meet HP guidelines might cause poor print quality, increased media jams, or premature wear on the printer, which might require printer repair.
Guidelines for using media HP LaserJet printers produce documents that have excellent print quality. They can print on a variety of media types, such as paper (including up to 100% recycled fiber content paper), envelopes, labels, transparencies, and custom-sized media. Paper and transparencies Paper must be of good quality and free of cuts, nicks, tears, spots, loose particles, dust, wrinkles, holes, and curled or bent edges.
Labels When selecting labels, consider the following factors: ● Adhesives: The adhesive material should be stable at 200°C (392°F), the printer’s maximum temperature. ● Arrangement: Only use labels with no exposed backing between them. Labels can peel off sheets that have spaces between the labels, causing serious jams. ● Curl: Before printing, labels must lie flat with no more than 13 mm (0.5 inch) of curl in any direction.
Envelopes with adhesive strips or flaps Envelopes with a peel-off adhesive strip or with more than one flap that folds over to seal must use adhesives compatible with the heat and pressure in the printer: 200°C (392°F). The extra flaps and strips might cause wrinkling, creasing, or jams.
Card stock and heavy media For optimum performance, do not use paper heavier than 157-g/m 2 (42-lb). Paper that is too heavy might cause misfeeds, stacking problems, jams, poor toner fusing, poor print quality, or excessive mechanical wear. Card-stock construction ● Smoothness: 135- to 157-g/m2 (36- to 42-lb) card stock should have a smoothness rating of 100 to 180 Sheffield. 60- to135-g/m2 (16- to 36-lb) card stock should have a smoothness rating of 100 to 250 Sheffield.
Loading media Loading media in the HP LaserJet 1018 printer is simple and straightforward. This section describes loading bulk media. Main input tray The main input tray holds up to 150 sheets of 75-g/m2 (20-lb) paper or a 25 mm (0.98 inch) stack of heavier media. Load media with the top forward and the side to be printed on facing up. To prevent jams and skew, always adjust the side and rear media guides.
Setting media types Use the procedure in this section to select the correct type of media for the print job. An incorrect media type setting might cause image-quality problems. Set the media type 22 1. Open the Printer Properties dialog box. 2. Click Printer Preferences. 3. Select the correct media type from the Type Is drop down menu. 4. Click OK to close the Printer Preferences dialog box. 5. Click OK to close the Printer Properties dialog box.
3 Maintenance This chapter describes the life expectancy of parts that wear, printer cleaning, printer maintenance, and the replacement of user-replaceable parts.
Life expectancies of 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.
Cleaning the product WARNING! Before you perform these steps, unplug the printer to avoid shock hazard. To maintain quality, thoroughly clean the printer at the following times: ● Any time a new print cartridge is installed ● After printing approximately 2,000 pages ● Whenever print-quality problems appear Clean the outside of the printer with a water-dampened cloth. Clean the inside with only a dry, lintfree cloth (such as a lens tissue). WARNING! Avoid touching the heating element in the fuser.
Cleaning the print path The HP LaserJet 1018 printer features a special cleaning mode to clean the paper path. NOTE This process requires using a transparency to remove dust and toner from the print paper path. Do not use bond or rough paper. Make sure that the transparency that is used in this cleaning process meets the media requirements for the printer. If transparency film is unavailable, use copier-grade paper (70 to 90 g/m2, or 18 to 24 lb) that has a smooth surface.
2. Open the print-cartridge door, and remove the print cartridge (HP LJ 1010 series printer shown). CAUTION To prevent damage, do not expose the print cartridge to light. Cover the print cartridge, if necessary. Also, do not touch the black-sponge transfer roller inside the printer. By doing so, you can damage the printer. ENWW 3. With a dry, lint-free cloth, wipe any residue from the media-path area and the print-cartridge cavity. 4.
5. 28 Plug in the printer, and then turn it on.
Cleaning the pickup roller If you want to clean the pickup roller rather than replace it, use the following instructions. Remove the pickup roller as described in steps 1 through 5 of Replacing the pickup roller on page 30. With the roller outside the printer, use the following steps to complete the cleaning. ENWW 1. Dampen a lint-free cloth with water and scrub the roller. 2. Using a dry, lint-free cloth, wipe the pickup roller to remove loosened dirt. 3.
User-replaceable parts To order a new pickup roller or separation pad, go to http://www.hp.com/go/hpparts. Replacing the pickup roller If the printer regularly misfeeds (no media feeds through) and cleaning the pickup roller does not fix the problem, replace the pickup roller. CAUTION Failure to complete all of the steps in this procedure might damage the product. 30 1. Turn off the printer, unplug and remove the power cord. Wait for the printer to cool. 2.
4. Gently release the small, white tabs on each side of the pickup roller by pushing them away from the roller, and then rotate the pickup roller toward the front. CAUTION Use gentle pressure to release the small, white tabs to avoid breaking them. 5. Gently pull the pickup roller up and out. 6. Position the new pickup roller in the slot of the previous pickup roller. NOTE Circular and rectangular pegs on each side prevent you from incorrectly positioning the pickup roller. 7.
32 8. Reinstall the print cartridge, and close the print-cartridge door. 9. Plug in the printer, and then turn it on.
Replacing the separation pad If the printer regularly pulls multiple sheets of media at a time, you might need to change the separation pad. Recurring feed problems might indicate that the separation pad is worn. Normal use with good-quality media causes wear. The use of poor-quality media might require more frequent replacement of the separation pad. NOTE Before you change the separation pad, clean the pickup roller. See Cleaning the pickup roller on page 29. To order parts, go to http://www.hp.
34 4. Insert the new separation pad, and screw it in place. 5. Plug the printer in, and then turn it on.
Replacing the main input tray (paper-pickup tray assembly) If you break or damage the main input tray (also called the paper-pickup tray assembly), you can replace it. To order parts, go to http://www.hp.com/go/hpparts. 1. Carefully flex the main input tray just enough to release one side. NOTE Be careful not to break the hinge points. 1 2 3 Figure 3-1 Main input tray (HP LaserJet 1020 printer shown) 2. ENWW Remove the main input tray.
Replacing the output-bin extension (delivery-tray assembly) If you break or damage the output-bin extension (also called the delivery-tray assembly), you can replace it. To order parts, go to http://www.hp.com/go/hpparts. 1. Carefully flex the sides of output-bin extension just enough to release the hinge pins. NOTE Be careful not to break the hinge pins (callout 1). 1 Figure 3-2 Output-bin extension 2. 36 Remove the output-bin extension.
4 Operational overview This chapter describes the general components and theory of operation of the HP LaserJet 1018 printer.
Basic functions The following are the major systems of the printer: ● Formatter and I/O functions ● ● Formatter system Printer functions and operation ● Engine-control system (engine control unit [ECU] and engine power assembly) ● Image-formation system ● Paper-feed system FORMATTER COMPUTER PRINTER ENGINE UNIT ECU Figure 4-1 Basic configuration 38 Chapter 4 Operational overview ENWW
Formatter system The formatter coordinates the major systems.
Enhanced I/O The Enhanced I/O feature uses printer memory to store data that the printer receives from the host computer. When Enhanced I/O is enabled, you can send more data to the printer in less time, so that you can return to your software program sooner. Enhanced I/O has the following options: ● Auto: The product uses Enhanced I/O memory allocation to increase the speed of data transfer from the host computer to the printer, if necessary. The default setting is Auto.
Printer functions Printer 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: Figure 4-2 Printer functional-block diagram ENWW Printer functions 41
Engine control system (engine control unit and power assembly) The engine control system coordinates all print engine activities. The engine control system includes both the engine control unit (ECU) PCA and the engine-power-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 laser/scanner unit 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 engine power assembly The engine-power assembly provides 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. 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.
Power supply PCB Engine controller PCB High-voltage power supply circuit IC902 Primary charging bias circuit CPU IC301 PRPWM J902-10 J201-14 DC voltage generation circuit Combined PRAC J902-9 J201-15 IC301 IC301 PR1 Primary J304 charging roller AC voltage generation circuit J303 Photosensitive drum DEV J301 Developing cylinder TRS Transfer J302 charging Developing bias circuit roller DC voltage generation circuit Combined DVAC J902-8 J201-16 IC301 Transfer charging bias circuit TRPD
The seven image-formation processes Paper Pickup Figure 4-5 Image formation-block diagram 46 1. Conditioning stage (primary charging)—This process applies a uniform negative charge to the surface of the drum with the primary charging roller, which is located in the print cartridge. The primary charging roller is coated with conductive rubber. An ac bias is applied to the roller to erase any residual charges from any previous image.
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.
MAIN MOTOR DRIVE signals PAPER WIDTH DETECTION signal (/PWSNS) Face-down delivery roller TOP-OF-PAGE-DETECTION signal (/PISNS) PAPER DELIVERY DETECTION signal (/POSNS) FUSER DELIVERY PAPER WIDTH DETECTION sigunal (/PW2SNS) BD OUTPUT signal (/BD) PICKUP SOLENOID DRIVE signal (CPUD) Engine controller PCB PS804 Formatter PS803 Fuser pressure roller Fuser film unit Transfer charging roller M1 Photosensitive drum PS801 PS802 SL1 Pick-up roller Manual feed tray Pickup tray Separation pad PS801:
Jam detection The top-of-page sensor (PS801) and the paper-delivery sensor (PS803) detect media moving through the printer. If a jam is detected, the ECU immediately stops the printing process and the jam light on the control panel illuminates. Conditions of jam detection ENWW ● Pickup-delay jam—Paper does not reach the top-of-page sensor (PS801) within 1.
Solenoid, sensors, switches, and motor The following figure shows the locations of the solenoid, sensors, switches, and motor. Figure 4-7 Solenoid, sensors, switches, and motor 50 1 The door switch detects whether the print-cartridge door is closed. Printing cannot continue until the print-cartridge door is closed. 2 Power switch 3 The paper-width sensor senses the width of the paper. 4 The paper-delivery sensor senses when paper has successfully moved out of the fusing area.
Basic sequence of operation (formatter-to-printer) The microprocessor (CPU) on the ECU controls the printer operation sequence. The following events take place during normal printer operation. Table 4-1 Basic sequence of operation ENWW Period Purpose Remarks WAIT: After the product 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.
Figure 4-8 Printer timing diagram NOTE The timing chart is for one sheet of A4-size media. 52 Chapter 4 Operational overview 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.
5 Removal and replacement This chapter describes the removal and replacement of field-replaceable units (FRUs) only.
Removal and replacement strategy This chapter contains detailed steps and images that show parts removal. Replacement is generally the reverse of removal. Occasionally, notes are included to provide directions for difficult or critical replacement procedures. WARNING! Remove the power cord before attempting to service the product. If this warning is not followed, severe injury can result, as well as damage to the device.
Print cartridge 1. Open the print-cartridge door on the top of the printer. 2. Remove the print cartridge. CAUTION To prevent damage, do not expose the print cartridge to light. Cover it with a piece of paper.
Parts removal order Use the following illustration to determine which parts must be removed before removing other parts.
User-replaceable parts To order a new pickup roller or separation pad, go to http://www.hp.com/go/hpparts. Replacing the pickup roller If the printer regularly misfeeds (no media feeds through) and cleaning the pickup roller does not fix the problem, replace the pickup roller. CAUTION Failure to complete all of the steps in this procedure might damage the product. ENWW 1. Turn off the printer, unplug and remove the power cord. Wait for the printer to cool. 2.
4. Gently release the small, white tabs on each side of the pickup roller by pushing them away from the roller, and then rotate the pickup roller toward the front. CAUTION Use gentle pressure to release the small, white tabs to avoid breaking them. 5. Gently pull the pickup roller up and out. 6. Position the new pickup roller in the slot of the previous pickup roller. NOTE Circular and rectangular pegs on each side prevent you from incorrectly positioning the pickup roller. 7.
ENWW 8. Reinstall the print cartridge, and close the print-cartridge door. 9. Plug in the printer, and then turn it on.
Replacing the separation pad If the printer regularly pulls multiple sheets of media at a time, you might need to change the separation pad. Recurring feed problems might indicate that the separation pad is worn. Normal use with good-quality media causes wear. The use of poor media might require more frequent replacement of the separation pad. NOTE Before you change the separation pad, clean the pickup roller. See Cleaning the pickup roller on page 29. To order parts, go to http://www.hp.com/go/hpparts.
ENWW 4. Insert the new separation pad, and screw it in place. 5. Plug the printer in, and then turn it on.
Replacing the main input tray (paper-pickup tray assembly) If you break or damage the main input tray (also called the paper-pickup tray assembly), you can replace it. To order parts, go to http://www.hp.com/go/hpparts. 1. Carefully flex the main input tray just enough to release one side. NOTE Be careful not to break the hinge points. 1 2 3 Figure 5-3 Main input tray (HP LaserJet 1020 printer shown) 2. 62 Remove the main input tray.
Replacing the output-bin extension (delivery-tray assembly) If you break or damage the output-bin extension (also called the delivery-tray assembly), you can replace it. To order parts, go to http://www.hp.com/go/hpparts. 1. Carefully flex the output-bin extension just enough to release the hinge pins. NOTE Be careful not to break the hinge pins (callout 1). 1 Figure 5-4 Output-bin extension 2. ENWW Remove the output-bin extension.
Covers Remove the covers to gain access to the internal replaceable parts. Right-side cover 1. Before removing the cover, examine Figure 5-5 Remove the right-side cover (1 of 4; HP LJ 1020 printer shown) on page 64 and note the location of tabs on the cover. Figure 5-5 Remove the right-side cover (1 of 4; HP LJ 1020 printer shown) 2. Remove one screw (callout 1) and then release one tab (callout 2).
3. Open the print-cartridge door. Grasp the cover, and carefully pry up on the cover to release one tab. Figure 5-7 Remove the right-side cover (3 of 4; HP LJ 1020 printer shown) 4. Slightly rotate the back of the cover away from the product, and then slide the cover forward to remove it. NOTE If the cover cannot be removed easily, release one additional tab that is located on the bottom of the printer near the center of the cover.
Left-side cover Removing the left-side cover is similar to removing the right-side cover. Use the steps and figures for removing the right-side cover, except start the procedure by examining the tabs on the left side and removing the screw on the left side. NOTE If the cover cannot be removed easily, release one additional tab that is located on the bottom of the printer near the center of the cover.
4. Squeeze the two retaining tabs on the plastic door-link clip to release it from the hinge arm on the print-cartridge door. CAUTION Do not drop the clip into the gear assembly that is on the side of the printer. Figure 5-10 Remove the rear panel and top-cover assembly (2 of 6) Hint Reinsert the plastic door-link clip in the hinge arm or store it with the screws to prevent losing it.
5. Remove one screw (callout 2) from the back of the product. 2 Figure 5-12 Remove the rear panel and top-cover assembly (4 of 6; HP LJ 1020 printer shown) 6. The top-cover assembly and metal rear-panel are interlocked with plastic tabs. Plastic tabs also secure the metal rear-panel at the bottom. Lift up the fuser cover at the top and pull it back slightly. Lift the rear panel up and off the tabs on the bottom.
7. Lift up on the top-cover assembly to remove it. Figure 5-14 Remove the rear panel and top-cover assembly (6 of 6) Reinstalling the top-cover assembly 1. To reinstall the top-cover assembly, raise the two pressure-release levers.
2. Position the top-cover assembly over the pressure-release levers (callout 1), and lower it onto the chassis. Make sure that the pressure-release levers are inserted through the slots (callout 2) on the top-cover assembly. 1 2 Figure 5-16 Reinstall the top-cover assembly (2 of 2) CAUTION Make sure that the two plastic antistatic tabs are correctly positioned. The tabs must protrude into the output bin area.
Front cover 1. 2. Remove the following assemblies. ● Right-side cover. See Right-side cover on page 64. ● Left-side cover. See Left-side cover on page 66. Before removing the cover, examine Figure 5-17 Remove the front cover (1 of 3) on page 71 and note the locations of the plastic tabs at the top of the front cover. Open the print-cartridge door.
3. Release the tab on the bottom right side of the front cover, and then pull the bottom of cover away from the chassis. Repeat this step for the left side of the front cover. 2 1 Figure 5-18 Remove the front cover (2 of 3) 4. With the bottom of the front cover released, pull up and back at the top of the cover while gently rocking it to release all of the tabs at the top, and remove the front cover.
Internal assemblies When replacing internal assemblies, make sure to transfer any component parts that are not provided with the new assembly from the failed assembly to the new assembly. For example, sensor PCBs are not included with the fuser assembly or the paper-pickup assembly. The sensor PCB from the failed assembly must be transferred to the new assembly. Transfer-roller assembly Before proceeding, make sure it is absolutely necessary to remove the transfer roller.
2. The clamps on the paper guide fit over the bearings on the right and left ends 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 right bearing. Slide the paper guide slightly to the right, and the left clamp will slide off the left bearing. Figure 5-21 Remove the transfer roller (2 of 3) 3. Use needle-nose pliers or your fingers to squeeze the two small tabs on the transfer roller.
Reinstallation tip A small grounding spring is under the right transfer-roller bearing. When reinstalling the transfer roller, position this spring correctly under the right bearing. Reverse the removal process to install the new transfer roller. Then reinstall the paper guide by gently pressing the two ends of the guide onto the transfer-roller bearings until the clamps snap into place. Rotate the paper guide down until the tabs on both ends engage. Engine-power assembly 1. 2.
4. Remove two screws from the back of the printer (callout 3), disconnect the high-voltage wire (callout 4) and then remove the engine-power assembly. NOTE Be careful not to lose the two springs that are behind the engine-power assembly. 4 3 Figure 5-24 Remove the engine power assembly (2 of 2) Reinstallation tip When reinstalling the engine-power assembly, make sure that the cable guide is correctly installed by clipping it onto the PCB at the top, back corner and onto the metal casing.
Fuser (fixing) assembly 1. 2. Remove the following assemblies. ● Right-side cover. See Right-side cover on page 64. ● Left-side cover. See Left-side cover on page 66. ● Top-cover assembly. See Rear panel and top-cover assembly on page 66. Disconnect cables, as necessary, from near the top of the engine-power assembly, and disconnect the high-voltage wire (callout 1) from the back of the printer. CAUTION Do not pull directly on the wires when a connector is disconnected.
4. Remove three screws (callout 2). (This figure shows the delivery-sensor PCB removed, but it is not necessary to remove this PCB in order to remove the fuser). 2 Figure 5-26 Remove the fuser (fixing) assembly (2 of 2) 5. Lift the end of the fuser assembly from the right side of the printer, and remove it. Reinstallation tip 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. ● Right-side cover. See Right-side cover on page 64. ● Left-side cover. See Left-side cover on page 66. ● Top-cover assembly. See Rear panel and top-cover assembly on page 66. ● Transfer roller. See Transfer-roller assembly on page 73. ● Fuser (fixing) assembly. See Fuser (fixing) assembly on page 77. Disconnect and unwind any additional wires as necessary to release the paper-pickup assembly.
Engine control unit (ECU) assembly 1. 2. Remove the following assemblies. ● Right-side cover. See Right-side cover on page 64. ● Left-side cover. See Left-side cover on page 66. ● Top-cover assembly. See Rear panel and top-cover assembly on page 66. ● Front cover. See Front cover on page 71. Disconnect the flat flexible (ribbon) cable (callout 1) from the formatter, which is on the right side of the product.
3. Disconnect the flat flexible (ribbon) cable (callout 2) from the engine-power assembly. Figure 5-29 Remove the ECU assembly (2 of 6) 4. Remove four screws (callout 3). 3 Figure 5-30 Remove the ECU assembly (3 of 6) 5. ENWW Lift the ECU cover up just enough to free it, and then tilt it back as far as it will go without forcing it.
6. Two sheet-metal hook hinges (one on each side) secure the cover. Use a screwdriver to push both hooks free, and then remove the ECU cover. 2 1 Figure 5-31 Remove the ECU assembly (4 of 6) 7. Release the plastic wire-retainer tab (arrow 1), and rotate the retainer up and away from the chassis (arrow 2).
8. Disconnect one flat flexible (ribbon) cable and the connector to the step motor (callout 4). Remove two screws (callout 5). Loosen the tape (callout 6) that secures the cable to the chassis. As you remove the ECU, unplug the additional connector to the laser/scanner assembly. CAUTION Do not pull directly on the wires when a connector is disconnected. Always pull on the plastic body of a connector to avoid damaging the connector wires.
Laser/scanner assembly 1. 2. Remove the following assemblies. ● Right-side cover. See Right-side cover on page 64. ● Left-side cover. See Left-side cover on page 66. ● Top-cover assembly. See Rear panel and top-cover assembly on page 66. ● Front-cover. See Front cover on page 71. ● Engine-control unit assembly. See Engine control unit (ECU) assembly on page 80. Remove four screws (callout 1) and then remove the laser/scanner assembly.
6 Troubleshooting This chapter describes how to isolate and resolve printer problems, print-quality problems, and media problems. Troubleshooting details are provided to resolve problems or to isolate replaceable parts.
Basic troubleshooting Troubleshooting checklist Table 6-1 Basic troubleshooting Did the printer turn on? Cause Solution No power is available because the power source, cable, or switch failed. 1. Verify that the product is plugged in. Make sure that the printer is plugged directly into a working wall receptacle. 2. Verify that the power cable is functional and that the power switch is on. 3. If these conditions are correct, replace the engine power assembly. 1.
Table 6-1 Basic troubleshooting (continued) Is the software installed correctly? Cause Solution The software is not installed correctly, or an error occurred during software installation. Uninstall and then reinstall the product software. Make sure that you use the correct installation procedure and the correct port setting. Connect the USB cable to the printer and the computer. Print a test page from the Printer Properties dialog box.
Control-panel lights The Attention and Ready lights indicate printer status and errors. Figure 6-1 Control-panel lights Status-light patterns Off On Blinking Figure 6-2 Control-panel-light legend Table 6-2 Control-panel light patterns Light status State of the printer Action Ready No action is necessary. The product is ready to print. Processing data Wait for the job to print. The product is receiving of processing data. Cleaning mode A cleaning page is printing.
Table 6-2 Control-panel light patterns (continued) Light status State of the printer Action Out of memory The page you are printing might be too complex for the printer's memory capacity. Try lowering the resolution. The printer is out of memory. Attention: door open, no print cartridge, or media jam The printer is in an error state that requires operator intervention. Printer initialization Check the following: ● The print cartridge door must be completely closed.
Jams Clearing jams 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. CAUTION Always pull jammed media in the direction it would travel through the paper path. Do not pull jammed media against the direction of travel through the paper path to avoid damage to the printer.
CAUTION To prevent damage to the printer when clearing jams, including jams in the output bin, always open the print cartridge door and remove the print cartridge. To prevent damage to the print cartridge, minimize its exposure to direct light. Cover the print cartridge with a sheet of paper. 1. Open the print cartridge door, and remove the print cartridge. 2. Grasp the middle edge of the side of the media that is most visible, and carefully pull it free from the printer.
3. When you have removed the jammed media, replace the print cartridge, and close the print cartridge door. After clearing a media jam, you might need to turn the printer off then on again. NOTE When you add new media, remove all of the media from the input tray and straighten the stack of new media.
Print-quality troubleshooting Print-cartridge problems Checking the print cartridge Image-formation defects are frequently the result of problems in the print cartridge. If there is any doubt, always replace the print cartridge before troubleshooting image defects. Hint If the transfer roller was recently replaced, print-quality problems might be the result of skin oils on the black-sponge portion of the transfer roller. Do not touch the black-sponge portion of the transfer roller when replacing it.
Table 6-3 Solving print-quality problems (continued) Output pages are blank. Cause Solution The tape was not removed from the print cartridge. Remove the print cartridge, remove the tape, and reinstall the print cartridge. The print cartridge is out of toner. Replace the print cartridge The high-voltage connection between the printer and the print cartridge has been interrupted. Perform a High-voltage-contacts check on page 110.
Table 6-3 Solving print-quality problems (continued) Random toner specks appear on the printed page. ENWW Cause Solution The media in use 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 print path is dirty. Clean the print path (see Cleaning the print path on page 26).
Table 6-3 Solving print-quality problems (continued) Characters are only partially printed (also referred to as dropouts). 96 Cause Solution A single sheet of paper is defective. Try reprinting the job. The print density needs to be adjusted. Open the Printer Properties dialog box, and then select the Configure tab. Use the slide bar in the Print Density area of the dialog box to change the print density setting. Click OK to close the Printer Properties dialog box.
Table 6-3 Solving print-quality problems (continued) Vertical black lines appear on the printed page. Cause Solution The print cartridge is depleted or damaged. Replace the print cartridge. Rarely, the fuser is defective. Replace the fuser. The printed page has a gray background. ENWW Cause Solution The wrong type of media is selected in the Printer Preferences dialog box. Open the Printer Properties dialog box, and then click Printing Preferences.
Table 6-3 Solving print-quality problems (continued) Toner smears appear on the printed page. Cause Solution If toner smears appear on the leading edge of the media, the media guides might be dirty. Wipe the media guides with a dry, lint free cloth. The print path needs to be cleaned. Clean the print path (see Cleaning the print path on page 26). The media in use does not meet HP specifications (for example, it is too moist or too rough).
Table 6-3 Solving print-quality problems (continued) The toner is loose, and it does not stay attached to the printed page. Cause Solution the Type Is drop down menu. Click OK to close the Printing Preferences dialog box, and then click OK again to close the Printer properties dialog box. The power strip is not working correctly or the ac power does not meet the specified requirements. Plug the product directly into an ac outlet. Ensure that the power source is clean.
Table 6-3 Solving print-quality problems (continued) Repetitive vertical defects appear on the printed page. Cause Solution The internal parts have toner on them. If the defects occur on the back of the page, the problem will probably correct itself after a few more printed pages. Otherwise, clean the printer (see Cleaning the print path on page 26). The wrong type of media is selected in the Printer Preferences dialog box. Open the Printer Properties dialog box, and then click Printing Preferences.
Table 6-3 Solving print-quality problems (continued) Pages are skewed. Cause Solution The media is loaded incorrectly. Reload the media, and make sure that the side and rear media guides are not too tight against the media stack or too loose. The input tray is too full. Remove some of the sheets. The main input tray can hold up to 150-sheets of 75-g/m2 (20-lb) bond-weight paper (or fewer pages of heavier media), or a stack no higher than 25 mm (0.98 inch).
Table 6-3 Solving print-quality problems (continued) Large amounts of toner are scattered around the characters. Cause Solution The media resistivity is too high. (This most often happens when transparencies acquire a static charge.) 1. Use a different media. Make sure that the media meets the specifications detailed in the HP LaserJet Printer Family Print Media Guide. 2. Turn the stack of media over and put it back in the tray. 3.
Table 6-3 Solving print-quality problems (continued) Printout is faded in areas. Cause Solution If the entire page is light, the print density is too light or Econmode might be turned on. Open the Printer Properties dialog box, and then click Printer preferences. Select the Finishing tab and make sure that the EconoMode (Save Toner) check box is not selected. Select OK to close the Printer Preferences dialog box. Select the Configure tab in the Printer Properties dialog box.
Table 6-3 Solving print-quality problems (continued) Droplets of water are deposited on the trailing edge Cause Solution Moisture in the printer is condensing on the fuser assembly. In excessively hot and humid areas, media retains moisture. Try moving the printer to a less humid area. Try a different media. NOTE 104 Chapter 6 Water droplets do not damage the printer.
Solving paper-feed problems Use the following table to solve problems related to moving paper or documents through the product. Table 6-4 Solving paper-feed problems 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 the specifications detailed in the HP LaserJet family Print Media Guide.
Table 6-4 Solving paper-feed problems (continued) The printer feeds multiple sheets or jams frequently from the main input tray or priority input slot. 106 Cause Solution The paper guides are not adjusted correctly or the paper is not far enough forward. Slide the guides against the sides of the stack in the main input tray or the priority input slot to center the paper. Make sure that the guides are not adjusted too tightly. The stack is not neat or not aligned well on all sides.
Functional checks This section includes five functional checks for troubleshooting.
4. Check the fuser connections (callout 1) on the engine-power assembly. Also check the high voltage connection at the back side of the printer. NOTE The following figure shows the HP LaserJet 1010 series products. The connections are located at the same place on the HP LaserJet 1018 printer. Figure 6-3 Check the fuser connections (HP LaserJet 1010 series shown) If a transfer problem exists, replace the transfer roller (do not touch the black-sponge portion of the transfer roller).
Drum-rotation functional check The photosensitive drum, which is located in the print cartridge, must rotate in order for the print process to work. The photosensitive drum receives its drive from the main motor through a system of gears on the right side of the printer. NOTE This test is especially important if refilled print cartridges have been used. 1. Open the print-cartridge door. 2. Remove the print cartridge. 3. Mark the drive gear on the cartridge with a felt-tipped marker.
High-voltage-contacts check The high-voltage contacts in the printer must have a good connection with the contacts on the print cartridge to provide the necessary voltages for the electrophotographic 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 the connection. If they are damaged, replace the print cartridge.
To check the printer high-voltage contacts The printer has three spring-loaded pins (callout 1) that make contact with the high-voltage points on 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. If they are damaged, replace the printer.
Troubleshooting tools If the printer output has a consistent, repetitive defect, then use the following ruler to predict which part needs to be replaced based on the measured distance between the repetitions of the defect. Repetitive-image-defect ruler First occurrence of print defect (0.00 inches) Print cartridge 32.0 mm (1.26 inches) Print cartridge 37.7 mm (1.48 inches) Fuser (fixing assembly) 41.0 mm (1.61 inches) Transfer roller 46.3 mm (1.82 inches) Paper-pickup assembly 55.2 mm (2.
J2 J6 1 2 3 4 5 6 FWD /SI /SO /CLK /STRB GND 7 8 9 11 12 13 14 2 3 16 17 J910 J5 18 2 4 6 6 4 8 2 9 1 BD sensor 7 3 Laser / Scanner unit 5 5 3 4 5 6 7 19 8 20 9 21 10 22 11 23 12 24 13 25 14 26 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 Formatter Laser Drive PCB 1 8 7 15 Centronics interface 10 1 2 3 4 Scanner motor M 1 2 3 4 J002 1 2 3 4 1 2 3 Main motor M 1 2 3 4 J001 1 2 3 4 4 J909 4 3 2 1 SL001 Pick-up solenoid J905 4 3 2 1 Engine con
Solenoid, sensors, switches, and motor The following figure shows the locations of the solenoid, sensors, and switches. Figure 6-8 Solenoid, sensors, switches, and motor 114 1 The door switch detects whether or not the print-cartridge door is closed. Printing cannot continue until the printcartridge door is closed. 2 Power switch 3 The paper-width sensor senses the width of the media. 4 The paper-delivery sensor senses when media has successfully moved out of the fusing area.
7 Parts and diagrams This chapter provides an exploded view that shows the replaceable parts of the printer, tables of replaceable parts, and links to other resources.
Ordering parts and supplies This section describes Web resources for ordering parts and for technical support, as well as resources for ordering related documentation and software. Parts Order replacement parts from the following Web site: http://www.hp.com/go/hpparts Related documentation and software Order documentation and software from the Web sites listed in Table 7-1 Technical support websites on page 116. Table 7-1 Technical support websites HP Customer Care Online http://www.hp.
Accessories and consumables Accessories Table 7-2 Accessories 1 ENWW Product name Description Product number Part number Replacement print cartridge 2,000–page cartridge N/A Q2612A Cables and interface accessories 3-meter IEEE-1284 parallel cable N/A C2951A Cables and interface accessories 1.8-meter (6-feet) USB cable NA 8120-8485 Cables and interface accessories .
Common hardware The product uses common Phillips-head screws as fasteners. How to use the parts lists and diagrams The figures in this chapter illustrate the major subassemblies in the product. A table follows the exploded assembly diagram. Each table lists the reference designator, the associated part number for the item, and a description of the part. Parts that have no reference designator or part number are not field replaceable units (FRUs) and cannot be ordered.
Printer exchange/parts Figure 7-1 HP LJ 1018 product ENWW Printer exchange/parts 119
Table 7-3 Printer exchange/parts Ref 120 Description Part number Qty HP LJ 1018-110V printer (replacement) CB419-60056 1 HP LJ 1018-110V printer (exchange engine with formatter) CB419-69056 1 HP LJ 1018–110V printer (exchange engine without formatter) CB419–67001 1 HP LJ 1018-220V printer (replacement) CB419-60055 1 HP LJ 1018-220V printer (exchange engine with formatter) CB419-69055 1 HP LJ 1018–220V printer (exchange engine without formatter) CB419–67002 1 not shown HP LJ 1018 form
ENWW Printer exchange/parts 121
Major components Figure 7-2 Major components (HP LJ 1010 series shown) 122 Chapter 7 Parts and diagrams ENWW
Table 7-4 Major components ENWW Ref Description Part number Qty 1 Paper pickup tray assembly RM1-2079-000CN 1 2 Delivery tray assembly RM1-0659-000CN 1 3 Separation pad assembly RM1-0648-000CN 1 4 Roller, pickup RL1-0266-000CN 1 5 Fuser (fixing assembly) 110V to 127V RM1-2086-000CN 1 5 Fuser (fixing assembly) 220V to 240V RM1-2087-000CN 1 6 Engine power supply 110V to 127V RM1-2315-000CN 1 6 Engine power supply 220V to 240V RM1-2316-000CN 1 7 Laser/scanner assembly RM
Alphabetical parts list Table 7-5 Alphabetical parts list 124 Description Part number Table and page Delivery tray assembly RM1-0659-000CN Major components on page 123 Door Link Clip (Stopper) RM1–1957–000CN Major components on page 123 Engine control assembly RM1-2314-000CN Major components on page 123 Engine power supply 110V to 127V RM1-2315-000CN Major components on page 123 Engine power supply 220V to 240V RM1-2316-000CN Major components on page 123 Fuser (fixing assembly) 110V to 1
Table 7-5 Alphabetical parts list (continued) ENWW Description Part number Table and page Separation pad assembly RM1-0648-000CN Major components on page 123 Transfer roller assembly RM1-2093-000CN Major components on page 123 Alphabetical parts list 125
Numerical parts list Table 7-6 Numerical parts list 126 Part number Description Table and page CB419-60055 HP LJ 1018-220V printer (replacement) Printer exchange/parts on page 120 CB419-60056 HP LJ 1018-110V printer (replacement) Printer exchange/parts on page 120 CB419-69055 HP LJ 1018-220V printer (exchange engine with formatter) Printer exchange/parts on page 120 CB419-69056 HP LJ 1018-110V printer (exchange engine with formatter) Printer exchange/parts on page 120 CB419–00002 Nameplate
Table 7-6 Numerical parts list (continued) ENWW Part number Description Table and page RM1-2316-000CN Engine power supply 220V to 240V Major components on page 123 RM1–1957–000CN Door Link Clip (Stopper) Major components on page 123 Numerical parts list 127
128 Chapter 7 Parts and diagrams ENWW
Index A ac bias 46 ac power distribution 44 accessories, ordering 117 acoustic emissions 8 alignment, troubleshooting 101, 105 Attention light 15, 88 B back panel, removing 66 background, gray 97 beam detect (BD) signal 46 bidirectional communications 39 bin, output capacity 5 extension, replacing 36, 63 jams, clearing 90 locating 3 black dots, troubleshooting 95, 102 blank pages, troubleshooting 93 block diagrams image formation 45 product functions 41 breaking paper reams 106 buffer memory 40 buttons 15
jam detection operations 49 delivery tray assembly, part number 123, 124, 126 delivery tray extension, replacing 36, 63 delivery-delay jams 49 delivery-stationary jams 49 density operations 44 troubleshooting 96 developing roller 44 developing stage, image formation process 46 dimensions, printer 6 dimensions, product 14 documentation ordering 116 dots, troubleshooting 95, 102 dpi, specifications 5 draft mode 39 DRAM, formatter 39 drivers, ordering 116 dropouts, troubleshooting 96, 100 drum inspecting 93 op
scattered toner 102 skewed pages 101, 105 smears 98 specks 95 water droplets 104 white stripes 102 wrinkled pages 103 input tray capacity 5 jams, clearing 90 loading media 21 locating 3 media sizes supported 16 multifeeds 106 replacing 35, 62 INTR (Initial Rotation Period) 51 J jams clearing 90 detection operations frequent 106 K Korean EMI statement 49 11 L labels loading 21 specifications 18 laser safety statement 11 laser/scanner assembly operations 43 precautions 54 removing 84 LaserJet 1018 printer
overcurrent/overvoltage protection 44 P Page Protect 40 pages per minute 5, 6 paper breaking reams 106 capacity 5 curled 101, 105 heavy 20 jam detection operations 49 jams, clearing 90 loading 21 margins, minimum 94 multifeeds 106 sizes supported 16 specifications 16 storing 105 troubleshooting 17 type, setting 22 wrinkled 103 paper delivery sensor (PS803) feeding operations 47 jam detection operations 49 paper feed problems, troubleshooting 105 paper feed system 47 paper lift plate operations 47 paper pick
priority input slot feeding problems, troubleshooting 106 processor, formatter 39 production code 5 Q quality, troubleshooting about 93 blank pages 93 characters, misprinted 100 curled paper 101, 105 dropouts 96 faded areas 103 gray background 97 lines 97 loose toner 98 repetitive defects 100 repetitive image defect ruler 112 scattered toner 102 skewed pages 101, 105 smears 98 specks 95 water droplets 104 white stripes 102 wrinkled pages 103 R RAM formatter 39 Ready light locating 15 reams, breaking 106 rea
spots troubleshooting 98 stages, image formation 46, 107 static eliminator, operations 46 static precautions 54 stationary jams 49 status information, relaying 39 STBY (Standby) period 51 storage environment, specifications 6 storing paper 105 stripes, vertical white 102 supplies life expectancies 24 ordering 116 support, technical 116 T teardown tree 56 technical support 116 Technical Training 116 temperature fuser settings 98 specifications 6 storing paper 105 tests drum rotation 109 half-self functional
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