SERVICE MANUAL REVISION 0 AUG. 2001 COPYRIGHT 2001 CONON INC. FY8-13HQ-000 CANON LBP-2000 REV.0 AUG.
COPYRIGHT © 2001 CANON INC Use of this manual should be strictly supervised to avoid disclosure of confidential information.
PREFACE INTRODUCTION This Service Manual provides basic facts and figures needed to service the laser beam printer LBP2000 (hereafter, the Printer), performed to ensure initial product quality and performance. The following options may be used in combination with the Printer: • • • • Universal Cassette UC-65 Paper Feeder Unit PF-65 Hard Disk HD-65 Ether Board EB-65 This Service Manual also covers these options. For others, see their respective Service Manuals.
PREFACE CONTENTS CHAPTER 1 PRODUCT OUTLINE I. II. FEATURES .......................................... SPECIFICATIONS ............................. A. Printer ........................................ B . O p t i o n s ....................................... III. SAFETY ................................................ A. Safety of the Laser Unit ...... B . Safety of Toner ....................... C. Safety of Ozone ...................... IV. NAMES OF PARTS ........................... A. External View .......
PREFACE CHAPTER 3 MECHANICAL SYSTEM I. EXTERNALS AND CONTROLS .... A. External Covers ...................... B . Heat Discharging Fan .......... C. Door Switch Assembly ......... II. PCBS ..................................................... A. Arrangement of the PCBs ... B . Video Controller PCB ........... C. DC Controller PCB ................. D . Power Supply PCB A s s e m b l y ................................... III. DRIVE MECHANISMS .................... A. Main Motor ...............................
CHAPTER 1 PRODUCT OUTLINE I. II. III. IV. V. FEATURES .......................................... SPECIFICATIONS ............................. SAFETY ................................................ NAMES OF PARTS ........................... INSTALLATION .................................. 1-1 1-2 1-5 1-6 1-9 VI. RELOCATING THE PRINTER ...... 1 - 2 1 VII. ROUTINE MAINTENANCE/ INSPECTION BY THE USER ........ 1 - 2 2 VIII. USING THE PRINTER .....................
CHAPTER 1 I. FEATURES 1 . High-speed printing Although compact in design, the Printer is a high-speed printer capable of generating 20 pages per minute. 2 . Various sources of paper with the addition of options In addition to the cassette and the multifeeder that come as standard, the Printer may be combined with three 250-sheet paper feeders (PF-65; hereafter, paper feeder) to enable 5-way pickup, each source with different types of paper. 3 .
CHAPTER 1 II. SPECIFICATIONS A. 1.
CHAPTER 1 12 ) Noise (published noise by ISO9296) 13 ) D i m e n s i o n s 14) Weight 15 ) Power supply 16 ) O p t i o n s Sound power level 67 dB or less (printing) 57 dB or less (standby) Sound pressure level 53 dB or less (printing) (bystander position) 38 dB or less (standby) 488 (W) x 455 (D) x 311 (H) mm/18.9 (W) x 17.7 (D) x 12.2 (H) in. (w/ o options) 15 kg/33 lb (approx.; including 250-sheet cassette), 2 kg/4 lb (approx.
CHAPTER 1 B. 1. a. 1) 2) 3) 4) 5) 6) 7) Options Built-in print server Hardware Interface CPU ROM RAM Dimensions Weight Power supply b . Software 1) Protocol 2) Frame type 5) Print application 10Base-T, 100Base-TX AXIS: EXTRAX100LX (32-bit RISC CPU 100 MHz) 2 MB 4 MB 100 (W) x 85.5 (D) x 24 (H) mm/3.9 (W) x 3.1 (D) x 0.8 (H) in. 100 g/0.2 lb (approx.) 3.3 VDC (from printer) IPX/SPX, TCP/IP, AppleTalk (EtherTalk), NetBEUI/NetBIOS IPX/SPX : 802.2, 802.3, Ethernet II, 802.
CHAPTER 1 III. SAFETY A. Safety of the Laser Unit Although invisible, laser light is used inside the laser/scanner unit. Do not disassemble the laser/ scanner unit, as exposure to laser light can damage your eyes. The Printer’s laser/scanner unit is not designed for adjustment in the filed. The following shows the label attached to the cover of the laser/scanner unit. Figure 1-3-1 B . Safety of Toner Toner is a non-toxic material composed of plastic and small amounts of colorings.
CHAPTER 1 IV. NAMES OF PARTS A. External View 1 .
CHAPTER 1 • Behind the front cover [4] [3] [1] [2] Figure 1-4-3 3: Toner cartridge guide 4: Registration roller 1: Static eliminating brush 2: Transfer charging roller 2 .
CHAPTER 1 B . Cross Section 1 .
CHAPTER 1 V. INSTALLATION A. Points to Note About Installation The Printer is thoroughly adjusted and inspected at the factory before it is packed and shipped. Installation work is important in that the Printer must perform in the field as it did when it passed the factory inspection. The service engineer must have a full understanding of the machine, and install it in an appropriate site using specific steps, following up the work with a thorough inspection. B .
CHAPTER 1 3 . Spatial requirements Allow an appropriate distance from all walls, thus ensuring unobstructed work space. (Figure 1-51) If the Printer is to be installed on a table, be sure that the table is wide enough to accommodate the Printer’s feet (rubber pads) and strong enough to withstand the Printer’s weight.
CHAPTER 1 C. Unpacking and Installing When a piece of metal is brought in from a cold to warm place, droplets of water can develop on its surface. This phenomenon is known as condensation, and the use of an LBP suffering from condensation can cause various printing faults. If the Printer has been brought in from a cold place, leave it alone for at least one hour before unpacking it. 1 . Unpacking the printer 1) Unpack the Printer. 2) Check to make sure that none of the following is missing: 1.
CHAPTER 1 3 . Unpacking and installing the hard disk Note: 1) 2) 3) 4) Before handling the hard disk, be sure to touch a metal area of the Printer to avoid damaging the PCBs by static charges. Turn off the Printer, and disconnect the power cord and the interface cable. Take out the hard disk from its packaging box. Remove the vinyl bag used to cover the hard disk. Remove the screw [1], and detach the expansion board slot cover [2].
CHAPTER 1 6) Holding the metal cover area [5] of the hard disk, slide in the hard disk along the guide rail. [5] Figure 1-5-4 7) Secure the top and bottom of the hard disk with the 2 screws [6] that come with the hard disk. [6] Figure 1-5-5 8) Attach the expansion board slot cover and the power cord. 9) Connect the Printer’s power cord to the power outlet.
CHAPTER 1 4 . Unpacking and installing the built-in print server (Ether Board EB-65) Caution: If possible, wear a wrist strap designed to prevent damage by static charges. The static charges in your body can damage the electric mechanisms when you install the built-in print server to the Printer. Take particular care not to touch the parts in electric circuits. 1) 2) 3) 4) Unpack the print server. Take out the print sever from its packaging box. Remove the vinyl bag used to cover the print server.
CHAPTER 1 6) Slide in the print sever [5] into the expansion board slot 2 along the groove found inside. [5] Figure 1-5-8 7) Secure the top and bottom of the print server using the two screws [6] that come with the print server. [6] Figure 1-5-9 8) Connect the network cable to the connector of the print server to suit the network environment. Figure 1-5-10 9) Connect the power cord. 10) Connect the Printer’s power cord to the power outlet.
CHAPTER 1 11) Turn on the power switch, and check to make sure that the LNK lamp (green) of the print server is ON. • In the case of 10Base-T, check to make sure that the LNK lamp is ON. • In the case of 100Base-T, check to make sure that the LNK lamp and the 100 lamp are ON. ER R LNK 100 ERR lamp LNK lamp 100 lamp D TX RX D Figure 1-5-11 12) Turn on the power switch.
CHAPTER 1 6 . Points to note when using the printer 1 . When turning on the power switches, be sure to start with the external devices and then the Printer. To turn off the power switches, be sure to start with the Printer and then the external devices. If you turn on/off an external device while the printer is ON, noise can be introduced to the Printer through the cable connecting the device and the Printer, causing an error in the Printer. 2 .
CHAPTER 1 D . When Storing or Handling the EP-65 Cartridge The cartridge is subject to the effects of the environment it is in whether it remains packaged or installed in the Printer, and it takes on changes over time regardless of how many pages it has printed. The rate of change depends on the site of installation or storage, requiring full care when handling and storing it. a .
CHAPTER 1 b . After taking out of the package (removing the seal) The photosensitive drum is made of photoconducting material (OPC), and tends to deteriorate when exposed to strong light. The toner is also kept inside the cartridge, requiring care after the cartridge has been taken out its the package. Advise the user to take full care when handling/ storing the cartridge. 1 . Storing the cartridge after taking out of the package (removing the seal) 1 . Be sure to keep it in a protective bag. 2 .
CHAPTER 1 5 . Do not attempt to touch the surface of the photosensitive drum of the cartridge. Further, do not clean the photosensitive drum. Drum Figure 1-5-14 6 . Do not place the cartridge upright or turn it over. Be sure it is laid with the label surface facing upward. 7 . Do not disassemble the cartridge.
CHAPTER 1 VI. RELOCATING THE PRINTER If the Printer must be relocated after installation by truck or other means of transportation, take note of the following: 1 . Moving the printer with the cartridge removed Once the cartridge is removed, the transfer charging roller can become displaced.
CHAPTER 1 VII. ROUTINE MAINTENANCE/INSPECTION BY THE USER To ensure that the Printer remains in its best condition, advise the user to provide the following maintenance: 1 . Cartridge If the images are fuzzy or show white spots, or the cartridge is running out of toner, shake or replace the cartridge. 2 . Cassette pickup poller/cassette separation pad If pickup faults tend to occur, wipe the pickup roller/separation pad with a cloth moistened with water, and then dry wipe it.
CHAPTER 1 7) Press the Go key so that the Printer starts cleaning the fixing roller. Note: Allow about 5 min before the cleaning sheet is delivered to the delivery tray after cleaning is started. 8) Press Go key to bring the printer on-line state. 4 .
CHAPTER 1 4) Open the manual feed tray; while pushing down the holding plate, fit the manual feed cleaning tool in place as shown. Figure 1-7-5 5) Set the paper guide of the multifeeder manual feed tray to postcard size. To fit Figure 1-7-6 Note: After fitting the manual feed tray cleaning tool in place, check to make sure that it has been pushed so that the edge of the pickup guide and the step of the manual feed tray cleaning tool. match.
CHAPTER 1 VIII. USING THE PRINTER A. The Operation Panel The operation panel is used to perform basic printer operations, make printer configuration changes that software applications cannot control, identify available typefaces, and check the status of the p r i n t e r. The operation panel consists of the status indication display,four indicator lights, and six menu and operation keys.
CHAPTER 1 [6] Value key: With an item name displayed, press Value key to step through the item's values. Press Shift and Value keys to step through the values in reverse order. Some items have a large range of numbers from which to choose a value. [7] Enter/Cancel key Save a value you selected for an item in the menu. An asterisk (*) marks the value designated as the current default. [8] Shift key Press the Shift and another keys to access the alternate function.
CHAPTER 1 B . Operation Panel Menus You can access the following menus though the operation panel: • • • • • • • • • • • • • • SHUTDOWN MENU*3 SECURED JOB MENU*1 TEST MENU PCL MENU PS MENU*2 FEEDER MENU CONFIG MENU JOB CONTRL MENU*3 PARALLEL MENU USB MENU ETHERNET MENU*4 LANGUAGE MENU RESET MENU JOB LOG MENU NOTE: * 1 .If there is no secured job,this is not displayed. * 2 .This is not displayed,when the option Adobe Postscript 3 Module is not installed. * 3 .
CHAPTER 1 3 . Restoring the default settings Types of default settings are as follows: Factory default settings are those set for each menu item at the factory. The printer uses these settings changed. Temporary default settings are those set by the application software for the current print job. Permanent default settings are those set through the operation panel. These selections remain in effect even when the printer is turned OFF, or send a different request through the application. 4 .
CHAPTER 1 User Menu Operation Flow Menu level Item level Press “Go” to take the printer off-line. Value level READY Enter level Press: MENU SHIFT & ITEM SHIFT & VALUE SHIFT & VALUE ENTER To move: Forward Back Forward Back Forward Back Enter Arrow in Press “Menu” to display the following menu.
CHAPTER 1 1 - 30
CHAPTER 1 NOTE: FORMAT MENU * FORMAT DISK - This is not displayed, when HDD is not installed. * FORMAT FLASH - This is not displayed, when Flash-ROM is not installed. Service Menu Operation Flow After pressing two or more panel keys on boot-on, the panel key of further the plurality is pressed once again.
CHAPTER 1 1 - 32
CHAPTER 2 OUTLINE OF OPERATION 1 . The roles played by specific functions, the relationship between electrical system and mechanical system, and the timing at which each mechanism is driven are discussed according to functions. indicates a mechanical path. If a signal name is In any diagram, the symbol , the flow of a single electric signal is indicated, while given together with the symbol the symbol indicates the flow of multiple electric signals. 2 .
CHAPTER 2 I. BASIC OPERATION A. Functional Construction The Printer may be broadly divided into five functional blocks: engine control system, laser exposure system, image formation system, pickup/feeding system, and system control system. System control block Control panel To external device (e.g.
CHAPTER 2 B . Sequence of Basic Operation The sequence of the printer operation is controlled by the microprocessor found on the DC controller PCB. The conditions and the purposes of the sequence of each interval at power-on and during printing are as follows: • At Power-On Table 2-1-1 Interval Purpose Remarks From when the power switch is turned To heat the fixing roller and to WMUP on to when the surface temperature put the Printer to warm-up (warm-up) of the fixing roller reaches 140˚C.
CHAPTER 2 • Basic Sequence of Operation at Power-On Power switch ON Fixing roller 140˚C (unit: sec) STBY WAIT *1 WMUP WMUPR Main motor (M101) Registration clutch (CL102) Primary high voltage(AC) 1.0 (approx.) Primary high voltage(DC) Developing bias(AC) 0.56 (approx.) 1.3 0.46 (approx.) 1.0 Developing bias(DC) 1.
CHAPTER 2 • During Printing Table 2-1-2 Interval Purpose STBY (standby) To control the fixing roller to From when the warm-up rotation standby state, thereby keeping interval ends to when the /PRNT the Printer ready for printing. signal arrives from the video controller. Or, from when LSTR ends to when the /PRNT signal arrives from the video controller or when the power switch is turned off.
CHAPTER 2 • Basic Sequence of Operation During Printing (from printer cassette, A4) /PRNT input (unit: sec) INTR STBY PRINT LSTR STBY /PRNT Main motor (M101) Scanner motor (M102) 0.15 4.5 (approx.) /SCNRDY 0.46 Pickup clutch (CL101) Registration paper sensor (PI101) Registration clutch (CL102) 0.06 (may be adjusted) 0.03 /TOP signal Delivery sensor (PI103) Primary charging (AC) 0.1 Primary charging (DC) Laser diode 1.03 (approx.) 0.
CHAPTER 2 C. Power-On Sequence The following shows the flow of operation from when the power switch is turned on to when the Printer enters warm-up state. Power ON CPU initialized Option feeder connection checked /PPRDY signal generated Communication with video interface started The printer inside is checked for residual paper. Fixing heater ON A jam will be identified if the registration paper sensor or the delivery sensor detects paper.
CHAPTER 2 II. ENGINE CONTROL SYSTEM A. Outline of the Electrical Circuitry 1 . Outline The sequence of operation of the Printer is controlled by the CPU found on the DC controller PCB. When the power switch is turned on and the Printer enters standby state, the CPU generates signals to drive such loads as laser diodes, motors, and solenoids in response to the print start command and image data from an external device.
CHAPTER 2 2 . Operation within the block a . CPU The CPU is an 8-bit microprocessor. It is a single-chip type, possessing a built-in ROM and RAM; it performs the following operation of the Printer using ASIC according to the control program stored in ROM.
CHAPTER 2 B . Inputs to and Outputs from the DC Controller 1 . Inputs to the DC controller DC controller PCB J106 +5V -1 -3 /RGSNS When paper is present, ‘L’. -2 Registration paper sensor J909 -3 -1 PI101 -2 Multifeeder paper sensor J910 -3 -1 PI102 -2 J108 +5V -1 -3 /MPSNSI -2 J914 -3 -1 PI103 -2 J103 +5V -7 -9 /POSISNS When paper is present, ‘L’. -8 Delivery sensor J916 -1 -3 -3 -1 -2 -2 When paper is present, ‘L’. Cassette paper sensor PI104 When paper is present, ‘L’.
CHAPTER 2 2 . Outputs from the DC controller Multifeeder pickup solenoid J904 -1 -2 SL101 -2 J106 -14 -1 -15 MPFDO J906 -1 -2 Cassette pickup clutch CL101 -2 J106 -18 -1 Main motor Scanner motor CL102 M101 M102 -2 -17 +24V RGON When ‘H’, CL102 goes ON. J106 +24V -8 -9 -12 /MTRONO For details, see II-G -13 /MLOCK ‘Other Control’ in Chapter 2. -10 -11 J911 -4 -3 -2 -1 J106 +24V -4 -5 /ACCO -6 /DCCO -7 -1 -3 -2 For details, see III-C ‘Scanner System’ in Chapter 2.
CHAPTER 2 3 . Inputs to and outputs from the DC controller Rod DC controller PCB AC power input J1201 -5 J105 -31 RLYDRV SW102 Main power switch -4 Fixing heater H101 -2 THSW101 Thermal switch -32 /FSRDRV When ‘H’, the fixing heater (H101) goes ON. -34 /100/200V If a 200V power supply PCB is installed, ‘L’. Power supply PCB Laser/scanner assembly J9078 7 6 5 Laser unit 3 2 4 1 BD detection PCB When ‘H’, the relay goes ON to cut power to the fixing heater.
CHAPTER 2 C. Controlling the Fixing Mechanisms 1 . Outline Static eliminating brush Static Pressure eliminating brush roller Separation Delivery roller claws /ZEROXI DC controller PCB Power supply PCB /FSRDRV M101 TH1/TH2 Fixing roller Thermal switch Fixing heater Main thermistor (middle) Sub thermistor (right) Figure 2-2-5 The fixing roller, pressure roller, and delivery roller of the fixing assembly are driven by the main motor (M101).
CHAPTER 2 2 . Controlling the fixing temperature The fixing temperature is controlled in relation to the following: a . paper type b . power switch activation c . sleep mode (power saving mode) d . down sequence a .
CHAPTER 2 (2) Controlling to the target temperature To ensure good fixing as soon as the power switch is turned on, a target temperature is set in relation to the fixing temperature at power-on and the state of the Printer after power-on. • If the fixing temperature is less than 80°C when the power switch is turned on, When the /PRNT signal arrives in each mode, the target temperature is set higher than the control temperature.
CHAPTER 2 3 . Fixing heater safety circuit To prevent malfunction of the fixing heater, the Printer monitors the readings of the main thermistor and the sub thermistor at all times in relation to the ASIC and the high-temperature detection circuit found on the DC controller PCB. In the event of an error, the Printer causes the relay drive signal (RLYDRV) to go Low, thereby turning off the fixing heater drive rely (RL1) found on the power supply PCB to cut the AC power to the fixing heater (H101).
CHAPTER 2 4 . Protective functions The printer is equipped with the following protective functions to prevent malfunction of the fixing heater: a .
CHAPTER 2 5 . Detecting a fault in the fixing assembly The CPU will identify a fault in the fixing assembly under any of the following conditions (a through e) and execute the following: 1) Causes the /FSRDRV signal to go High to cut the power to the fixing heater.
CHAPTER 2 D . High-Voltage Power Supply Circuit 1 .
CHAPTER 2 • At power-on Main switch ON 140˚C (unit: sec) WAIT WMUP STBY WMUPR Print start command(/PRNT) Main motor(M101) Scanner ready signal(/SCNRDY) 1.0 (approx.) Primary AC bias 0.56 (approx.) 1.3 Primary DC bias 0.46 (approx.) Developing AC bias 1.0 Developing DC bias 1.6 Transfer bias Negative bias Figure 2-2-8 • During printing (A4, 2 pages, continuous) (unit: sec) STBY INTR PRINT PRINT LSTR STBY Print start command(/PRNT) Main motor(M101) Scanner ready signal(/SCNRDY) 4.
CHAPTER 2 2 . Operation a .
CHAPTER 2 b.
CHAPTER 2 c . Detecting the toner level and the presence/absence of a cartridge A toner level sensor is mounted inside the cartridge. The Printer collects readings (Ant) of the toner level sensor mounted inside the cartridge and the output (Dv) of the developing bias, and subjects them to A/D conversion.
CHAPTER 2 E . Low-Voltage Power Supply Circuit 1 . Outline Power supply PCB F1 Control panel NF High-voltage P1 power supply circuit +5V +3.3V +24VR Low-voltage power supply circuit F4 +3.3V circuit J1201 -8~-15 +5V Laser unit BD detection PCB Paper size sensor J1201 -18~-19 +3.3V F3 J1201 -22~-27 +24V +24V circuit Video controller PCB +3.3V F5 +5V circuit +3.
CHAPTER 2 The AC power arriving at the low-voltage power supply circuit on the power supply PCB is converted into three power levels (+24 V, +5 V, +3.3 V), and is sent to the DC controller PCB. The +24 V may be either of the following two: +24 V which is stopped when the right door switch (SW3) or the left door switch (SW4) is turned off (i.e., the front cover is opened), and +24 V which is supplied regardless of the state of these switches.
CHAPTER 2 F. Video Interface Control 1 . Outline The following explains the types of interface signals used between the DC controller circuit and the video controller circuit, and provides an outline of operation sequence executed using these interface signals. a . System block diagram External device (e.g.
CHAPTER 2 b . Video interface signals DC controller PCB Video controller PCB J5- J104- 10 /PPRDY 10 11 /CCRT 11 12 /SBSY 12 13 /PCLK 13 14 /STS 14 15 /RDY 15 16 /TOP 16 17 /CBSY 17 18 /CCLK 18 19 /CMD 19 20 /PRNT 20 21 /PRFD 21 22 /CPRDY 22 30 /BDO 30 31 /VDO 31 32 VDO 32 Figure 2-2-15 When the power switch is turned on, the Printer enters wait state (WAIT).
CHAPTER 2 G. Other Control 1 . Controlling the main motor The following shows the circuit used to control the main motor: DC controller PCB Main motor +24VR J106-8 J106-9 +5V J106-12 CPU MTRON +3.3V M101 J106-13 /MLOCK J106-10 J106-11 Figure 2-2-16 The main motor is a 3-phase DC brushless motor with a built-in Hall element, and is mounted to the motor drive PCB. The CPU causes the main motor drive signal (MTRON) to go High to rotate the main motor.
CHAPTER 2 2 . Controlling the fan motor The Printer is equipped with a single fan used to discharge heat from inside the machine. The heat discharging fan (FM101) is controlled by the following circuit and at such times as indicated: DC controller PCB +24V +24V +24V FANFULL ASIC FANDRV FANON Heat discharging J109 fan (FM101) -3 -2 -1 +3.
CHAPTER 2 When the power switch is turned on or when sleep state is ended, the fan ON signal (FANON) goes High and the fan full-speed rotation signal (FANFULL) goes High; the Printer supplies the fan drive voltage (FANDRV; about 24 V) to rotate the heat discharging fan at full speed. The Printer also rotates the heat discharging fan at full speed for 30 sec after the end of last rotation (LSTR) and between sheets.
CHAPTER 2 III. LASER/SCANNER SYSTEM A. O u t l i n e External device Video controller PCB /BDO /VDO VDO /TOP DC controller PCB /BDIN /VDO VDO /ENBLO /LONO DPICH /ACCO /DECO Cylindrical lens Laser unit 6-faceted mirror Scanner motor BD PCB No. 1 reflecting mirror Imaging lens BD mirror Photosensitive drum No. 2 reflecting mirror Figure 2-3-1 The video signals (/VDO, VDO) from the video controller are sent to the laser driver of the laser/ scanner assembly by way of the DC controller.
CHAPTER 2 B . Laser Control Circuit 1 .
CHAPTER 2 2 . Controlling the automatic emission of the laser diode The automatic emission mechanism (APC) of the laser diode is controlled by the laser driver IC, ensuring that the laser diode emits light of a specific intensity. When the laser forced emission signal (/LONO) goes ‘L’ or the image formation enable signal (/ ENBLO) and the /VOUT signal go ‘L’, the laser diode is turned on in keeping with the reference voltage of the laser driver PCB.
CHAPTER 2 /BD /TOP TOPE 4 . Controlling the emission of the laser diode In keeping with the paper size information from the CPU, the ASIC generates the image formation enable signal (/ENABLO), and sends it to the logic circuit of the laser driver IC. The /VDOUT signal is masked by the /ENABLO signal in the logic circuit so that the length of time during which the laser diode emits light is controlled.
CHAPTER 2 C. Scanner System 1 . Controlling the scanner motor The following is a diagram of the scanner motor control circuit: DC controller PCB /BDIN J102-10 J1001-2 J106-20 +24V /PRNT ASIC BD PCB +24V J106-4 J911-4 -5 /ACCO -3 -6 /DECO -2 -7 -1 CPU Scanner driver IC Drive circuit M102 Scanner motor Figure 2-3-4 The scanner motor is a 3-phase, 8-pole DC brushless motor with a built-in Hall element, and it is built as one with the driver circuit of the scanner motor.
CHAPTER 2 The CPU monitors the /BDIN signal coming from the BD PCB to find out whether the scanner motor is rotating at a specific speed of rotation. The CPU will identify any of the following conditions to be a scanner unit fault, and will communicate the fact to the video controller and indicate ‘E110’ on the LCD in the control panel. 1 . The /BDIN signal is absent for 10 msec continuously when the scanner motor is started up or turned off. 2 . The /BDIN signal is absent within 0.
CHAPTER 2 2 . Scanner pre-rotation To ensure that the rotation of the scanner motor stabilizes fast at time of start-up, the machine rotates the scanner motor by sending the scanner pre-rotation command about 4.25 sec (varies depending on the image data reception time) in advance of the pickup command (/PRINT) sent by the video controller to the ASIC, ultimately ensuring the correct positioning of the image leading edge.
CHAPTER 2 IV. IMAGE FORMATION SYSTEM A. O u t l i n e The image formation system is the core of the Printer, and consists mainly of a cartridge and a fixing assembly. When the video controller PCB sends the print signal (/PRNT) to the DC controller PCB, the DC controller PCB drives the main motor (M101) to start rotating the photosensitive drum, developing cylinder, primary charging roller, and transfer charging roller.
CHAPTER 2 B . Printing Process As shown in the diagram, the cartridge: principal area of the image formation system is found inside the Cleaning blade Photosensitive drum Primary charging roller Laser beam Blade Developing cylinder Cartridge Figure 2-4-2 The Printer uses a 2-layer seamless drum; the outer coating is a photo conducting laser made of optical photoconduction (OPC) material, while the inner coating is an aluminum substrate.
CHAPTER 2 The printing process broadly consists of the following 5 blocks (7 steps): (1) Latent static Image Formation Block Step 1: primary charging (-) Step 2: laser beam exposure (2) Development Block Step 3: development (3) Transfer Block Step 4: transfer (+) Step 5: separation (grounding) (4) Fixing Block Step 6: fixing (5) Drum Cleaning Block Step 7; drum cleaning 4.Fixing Block 6.fixing delivery 5.Drum Cleaning Block 7.drum cleaning 1.Latent static Image Formation Block 1.primary charging 3.
CHAPTER 2 1 . Latent static image formation block This block consists of 2 steps, and is used to form a latent static image on the photosensitive drum. At the end of the last step of this block, the area of the surface of the photosensitive drum not exposed by the laser beam (dark area) will retain negative charges, while the area on the surface of the photosensitive drum exposed by the laser beam (light area) will be free of negative charges.
CHAPTER 2 Step 2: laser beam exposure Laser beam Dark area Light area Figure 2-4-7 When the laser beam is run across the photosensitive drum, the charges in the light area become neutralized, forming a latent static image. 2 . Developing block In this block, toner is deposited to cover the latent static image on the surface of the photosensitive drum, thus turning it into a visible image. The Printer uses a toner projection development method, and its toner is a 1-component type.
CHAPTER 2 As can be learned from the diagram, the developing assembly consists of a fixed magnet, a developing cylinder that rotates around the magnet, and a rubber blade. The developer is called toner, and the Printer uses a 1-component type; it is composed of magnetite and resins, and is retained on the cylinder by a magnetic force. The toner has insulating characteristics, and is charged to a negative potential by friction against the rotation cylinder.
CHAPTER 2 3 . Transfer block This block is used to transfer the toner image on the surface of the photosensitive drum to paper. Step 4: transfer Transfer charging roller Photosensitive drum Paper Figure 2-4-10 Positive charges are applied to the back of paper to draw toner to the face of the paper from the photosensitive drum. A roller transfer method is used, which allows smooth movement of paper and reduction of generated ozone.
CHAPTER 2 4 . Fixing block The toner on the paper from the transfer block is retained on the paper by the work of static charges, and can move astray in response to the lightest impact (as when touched by the hand). The toner and the paper are thus subjected to pressure and heat, thereby fusing the toner with the fibers of the paper and, ultimately, making the image permanent.
CHAPTER 2 5 . Drum cleaning block In the transfer step, not all toner on the photosensitive drum is transferred to the paper, with some being left behind. The drum cleaning block is used t clean the surface of the photosensitive drum, thereby ensuring the reproduction of sharp images for the next run.
CHAPTER 2 V. PICKUP/FEEDING SYSTEM A. O u t l i n e The presence/absence of paper in the multifeeder tray is detected by the multifeeder tray paper sensor (PI102), and the presence/absence of paper in the cassette is detected by the cassette paper sensor (PI104). The size of paper inside the cassette set in the Printer and the presence/absence of the cassette are checked by the paper size detecting switch (SW105) inside the Printer.
CHAPTER 2 The following diagram shows the arrangement of the rollers and the sensors used in the pickup/ feeding system: PI103 Fixing roller Transfer charging roller Cassette paper detection signal Delivery roller Registration paper detection signal (/RGSNS) Delivery paper detection signal (/POSISNS) Multifeeder paper detection signal (MPSNS) Cassette upper size detection signal DC controller PCB Photosensitive drum manual feed pickup Registration roller roller PI101 Cassette pickup roller PI1
CHAPTER 2 The following diagram gives an outline of operation: Cassette pickup clutch drive signal (/CSTFD) Registration clutch drive signal (RGON) Multifeeder pickup solenoid drive signal (MPFDO) DC controller PCB SL101 CL102 CL101 Figure 2-5-2 SL101: CL101: CL102: M101: 2 - 48 multifeeder pickup solenoid multifeeder pickup clutch registration clutch main motor M101
CHAPTER 2 B . Detecting the Paper Size 1 .
CHAPTER 2 C. Using the Cassette 1 . Outline When the video controller sends the /PRNT signal to the Printer, the CPU rotates the main motor (M101); in about 0.15 sec, it turns on the pickup clutch (CL101) to transmit the rotation of the main motor to rotate the cassette pickup roller. A single sheet of paper is then fed inside by the rotation of the cassette pickup roller. The paper moves past the registration paper sensor (PI101) to reach the registration roller.
CHAPTER 2 D . Using the Multifeeder 1 . Outline The presence/absence of paper in the multifeeder tray is detected by the multifeeder paper sensor (PI102). When the /PRNT signal arrives from the video controller, the CPU rotates the main motor (M101) and the scanner motor (M102), and then turns on the multifeeder solenoid (SL101) as soon as the Printer is ready for printing.
CHAPTER 2 • Multifeeder Tray Pickup Operation Manual feed separation pad Multifeeder pickup clutch M101 Manual feed pickup roller Multifeeder pickup solenoid Cam Figure 2-5-6 • Basic Sequence of Operation for Multifeeder Tray Pickup /PRNT signal IN (unit: sec) STBY Main motor (M101) Multifeeder pickup solenoid (SL101) Registration paper sensor (PI101) Registration clutch (CL102) INTR 0.15 PRINT 0.18 0.11 (approx.) Figure 2-5-7 2 .
CHAPTER 2 E . Fixing/Delivery Assembly The pressure roller and the delivery roller of the fixing assembly are driven by the main motor (M101). The paper separated from the photosensitive drum is moved to the inside of the fixing assembly, and the toner is fused to its fibers by the work of the fixing roller; the paper is then moved outside the fixing assembly. The paper is detected by the delivery sensor (PI103), and is then delivered (face-down).
CHAPTER 2 F. Detecting Jams 1 . Outline The following paper sensor are used to monitor the movement of paper inside the Printer: • • Registration paper sensor (PI101) Delivery sensor (PI103) The presence of a jam is checked at such times as instructed by the program stored in advance in the CPU in relation to the presence/absence of paper at a specific sensor. When the CPU detects a jam, it will stop printing operation and communicate the presence of a jam to the video controller.
CHAPTER 2 • Sequence for a Pickup Delay Jam (cassette) /PRNT signal IN Jam message ON 2nd sheet picked up Pickup control Standby Main motor (M101) Pickup clutch (CL101) Registration paper sensor jam check Registration paper sensor (PI101) Error Normal Figure 2-5-11 • Sequence for a Pickup Delay Jam (multifeeder tray) /PRNT signal Pickup retry Pickup retry Jam message IN operation 1 started operation 2 started ON Standby Main motor (M101) Multifeeder pickup solenoid (SL101) Registration paper sensor
CHAPTER 2 b . Stationary jam A jam will be detected if the registration paper sensor (PI101) detects the absence of paper (trailing edge of the previous sheet) by the time the leading edge of paper reaches the registration paper s e n s o r.
CHAPTER 2 3 . Delivery jams a . Delivery assembly delay jam A delivery leading edge delay jam or the fixing assembly wrap jam will be identified by the DC controller as a delivery assembly delay jam. When the CPU on the DC controller detects the presence of a jam, it will stop printing operation and indicates the fact to the video controller.
CHAPTER 2 b . Delivery assembly stationary jam A delivery trailing edge delivery jam or a delivery stationary jam is identified by the DC controller as a delivery assembly stationary jam. When the CPU on the DC controller PCB detects a jam, it will stop printing operation and indicates the fact to the video controller. • Delivery Trailing Edge Delay Jam The delivery sensor (PI103) does not detect the absence of paper within a specific period of time after the registration paper sensor goes off.
CHAPTER 2 VI. VIDEO CONTROL SYSTEM A. Outline of the Electrical Curcuitry 1 . Outline This circuit is designed to receive print data consisting of code data or image data from an external device (e.g., host computer) through an interface cable. The circuit processes the print data it has received based on the instructions from the control panel for conversion into dot data. The resulting dot data is then converted into video signals, which are sent to the DC controller for control of the laser diode.
CHAPTER 2 f . EEPROM (IC4, IC5) It possesses 32K bits of memory, and it allows erasing and writing of data. It is used to retain data (various settings; printing environment, number of pages) after power is turned off. g . Program ROM version up When installing a ROM DIMM for version up to the slot (J1/J2/J3), the functions of the mounted built-in program ROM will be stopped and its contents will be replaced by the contents held in the newly installed ROM DIMM.
CHAPTER 2 The following is a block diagram of the video controller circuit: Expansion interface HDD interface (option) Expansion interface (option) External device HDD/expansion interface Control panel Centronics interface DC controller Video controller interface EEPROM ASIC CPU X'TAL1 66MHz X'TAL2 9.
CHAPTER 2 B . Operation Panel 1 . Outline The operation panel has one LCD with 16 characters by 2 lines, six switches, and four LEDs. The operation panel is connected with the video controller PCB and has the following functions. a . Displays status and error message on the LCD. b . Displays condition of the operation on the LED. c . Changes menu to activate and the set values with the switches. 2 .
CHAPTER 2 C. Self Test The printer has the function to check the condition of the video controller by executing the self diagnosis program of the video controller. This is called ‘self-test’ Self-test has two kinds of test; power ON self test and power ON key sequence. 1 . Power ON self test The power ON self test is executed following the procedures stated below every time the printer is switched ON. 1) Tests the DRAM on the video controller.
CHAPTER 2 7) If the Value key is pressed, all the LEDs are lit and the right half of the LCD (8 columns/both rows) is illuminated. Releasing the key clears the LEDs and the display. 8) If the Enter key is pressed, all the LEDs are lit and all the columns of the LCD are illumi-nated (i.e. all the columns are blacked). Releasing the key clears the LEDs and the display. 9) When all the keys have been tested, ‘PANEL CHECK DONE’ message is displayed and all the LEDs are kept blinking.
CHAPTER 2 VII. PAPER FEEDER A. O u t l i n e A paper feeder is used to pick up paper from any of the cassettes set inside, forwarding it to its host printer. As many as three paper feeders may be connected to the Printer: the first paper feeder will be referred to as PF1, while the second and third paper feeders are respectively referred to as PF2 and PF3. The sequence of operation of a paper feeder is controlled by the paper feeder controller PCB, which is an 8-bit microprocessor.
CHAPTER 2 B . Inputs to and Outputs from the Paper Feeder Controller Feed paper sensor J155 -3 -1 PI201 -2 Paper feeder controller PCB J2 +5V -1 When paper is present, ‘H’. -3 FSEN -2 Cassette paper sensor J154 -3 -1 PI202 -2 J2 +5V -4 -6 /CSPSEN when paper is present, ‘L’.
CHAPTER 2 C. Pickup/Feeding Operation 1 . Outline The paper feeder pickup motor is a stepping motor, and its speed is controlled by the paper feeder controller PCB. The paper feeder controller executes pickup operation or feeding operation in response to the pickup command or the feed command from the DC controller of the Printer. In response to the pickup command, the paper feeder controller PCB drives the paper feeder pickup motor (M201) at high speed.
CHAPTER 2 The following is an outline diagram of the drive mechanism: Paper feeder pickup motor drive signal Paper feeder pickup clutch drive signal (/PICKUPCL) Paper feeder cassette paper detection signal (/CSPSEN) Feed paper detection signal (FSEN) Cassette paper size detection signal DC controller PCB Feeding roller PI201 Cassette pickup roller CL201 SW201 PI202 Cassette separation pad Figure 2-7-3 PI201: paper PI202: paper CL201: paper M201: paper SW201:paper 2 - 68 feeder feed paper senso
CHAPTER 2 Basic Sequence of Operation • 3 paper feeders, pickup from bottommost; A4 /PRNT signal IN (unit: sec) INTR STBY PRINT 0.59 (approx.) PF3 pickup clutch PF3 pickup motor 0.61 (approx.) PF3 cassette paper sensor 0.54 (approx.) PF2 pickup motor 0.92 (approx.) PF2 cassette paper sensor 0.54 (approx.) PF1 pickup motor 0.92 (approx.) PF1 cassette paper sensor Registration paper sensor (PI101) 0.92 (approx.
CHAPTER 2 D . Detecting Jams The feed paper sensor (PI201) is used to check the presence/absence of paper and to find out if paper is moving correctly. It checks for a jam in terms of the presence/absence of paper over it at such times as programmed in advance. When the CPU detects a jam, it will stop printing operation and indicate the fact to the DC controller. 1 .
CHAPTER 3 MECHANICAL SYSTEM To disassemble/assemble the Printer, following the instructions given in this chapter. The service person is expected to identify the cause of a fault by referring to the descriptions in Chapter 4 ‘Troubleshooting,’ and then to replace appropriate parts according to the instructions given while heeding the following: 1 . Before dissembling/assembling or moving the Printer, take out the toner cartridge if necessary.
CHAPTER 3 I. EXTERNALS AND CONTROLS [9] A. External Covers [1] [5] [4] [10] [7] [8] [6] [3] [2] [1] Control panel [2] Cassette [3] Multifeeder tray [4] Front cover [5] Upper cover [6] Right cover [11] [12] Figure 3-1-1 [7] Left cover [8] Expansion board slot cover (1) [9] Rear cover [10] Slot cover (2) [11] Expansion board slot 1 (1) [12] Expansion board slot 2 (1) Figure 3-1-2 Remove the covers as shown when cleaning, inspecting, or repairing the inside of the Pr inter.
CHAPTER 3 1 . Removing the upper cover and the control panel 1) Remove the expansion board slot cover. 2) Remove the 2 screws [1], and slide out the upper cover [2] halfway. 2 . Mounting the upper cover and the control panel 1) Mount the upper cover [2] with 2 screws [1]. [2] [2] [1] [1] Figure 3-1-6 Figure 3-1-3 3) Remove the control panel harness [3], and detach the upper cover assembly [4].
CHAPTER 3 2) Connect the connector [5] to the control panel, and mount the control panel [6] to the upper cover [7]. [6] [7] 3) Lift the front cover [3] slightly to detach. [5] [3] Figure 3-1-10 Figure 3-1-8 3) Mount the extension slot cover. 3 . Removing the front cover Caution: If you must work for 5 min or more, be sure to slide out the cartridge and keep it in a protective bag. 1) Open the 2) Shift the both side and slide 4 .
CHAPTER 3 5. 1) 2) 3) Removing the right cover Remove the upper cover. Slide out the front cover slightly. Remove the screw [1], and detach the right cover [2]. B . Heat Discharging Fan 1 . Removing the heat discharging fan 1) Remove the video controller PCB. (See IIB-1 ‘Removing the Video Controller PCB unit.’) 2) Disconnect the connector J109 [1] from the DC controller PCB, and free the harness from the harness guide. [2] [1] [1] Figure 3-1-12 6 .
CHAPTER 3 Caution: When mounting the heat discharging fan, be sure to pay attention to the direction of air current. C. Door Switch Assembly 1 . Remove the left door switch 1) Remove the video controller PCB. (See IIB-1 ‘Removing the Video Controller PCB unit.’) 2) Disconnect the connector [1], and free the harness from the harness guide. [1] Figure 3-1-16 Figure 3-1-17 3) Remove the claw [2], and detach the left door switch [3].
CHAPTER 3 2 . Removing the right door switch 1) Remove the video controller PCB. (See VIIB-1 ‘Removing the Video Controller PCB unit.’) 2) Remove the drive assembly. (See III-B-1 ‘Removing the Drive Assembly.’) 3) Remove the screw [1], and remove the grounding plate [2]. [2] 5) Remove the 3 screws [5], and open the right rail [6] slightly. [6] [1] [5] Figure 3-1-21 Figure 3-1-19 6) Remove the screw [7], and detach the grounding plate [8]. 7) Free the grounding harness [9] from the harness guide.
CHAPTER 3 8) Disconnect the relay connector [10], and free the harness from the harness guide. [10] Figure 3-1-23 9) Remove the claw [11], and detach the right door switch [12].
CHAPTER 3 II. PCBS A. Arrangement of the PCBs [1] [4] [2] B . Video Controller PCB 1 . Removing the video controller PCB unit If a standard network or option network board is connected, be sure to remove it before starting the following steps: 1) Remove the rear cover. (See I-A-6 ‘Removing the Rear Cover.’) 2) Remove the connector cover [1]. 3) Disconnect the connector [2] and the flexible cable [3] from the back of the PCB.
CHAPTER 3 2 . Removing the video controller PCB 1) Remove the rear cover. (See I-A-6 ‘Removing the Rear Cover.’) 2) Remove the connector cover [1]. 3) Disconnect the connector [2] and the flexible cable [3] from the back of the PCB. 3 . Remove the RAM DIMM/ROM DIMM (option) The RAM/ROM is found as follows: Option ROM / P-ROM slot [2] [1] Extension RAM slot [3] Figure 3-2-6 Figure 3-2-4 4) Remove the 7 screws [4], and detach the video controller PCB [5].
CHAPTER 3 4 . Mounting the RAM DIMM (option) 2) Check to make sure that the lever [3] is at the same position as the slot [4]. Caution: The RAM DIMM must be one specifically designed for the Printer. The location of the cut-off differs between regular RAM DIMMs and one designed for the Printer. [4] SDRAM DIMM (3.3 V) for Printer [3] [4] May be used. Cut-off RAM DIMM (3.3 V, 5 V) for others [3] Must not be used. Figure 3-2-10 Cut-off 5 .
CHAPTER 3 1) Push down the ROM slot lever [1]. [1] 6 . Removing the hard disk (option) 1) Remove the extension board slot cover and the slot cover. 2) Remove the 2 screws [1], and detach the hard disk [2]. [2] [1] Figure 3-2-12 2) Holding it so that the cut-off [2] is as shown, insert the ROM DIMM [3] along the guide groove. [3] Figure 3-2-15 [2] Figure 3-2-13 7 . Removing the print sever (Option) 1) Remove the extension slot cover, slot cover, and rear cover. (See I-A-6 ‘Removing the Rear Cover.
CHAPTER 3 C. DC Controller PCB 1 . Removing the DC controller PCB The following is an outline of the work flow used to disassemble/assemble PCBs: Note: The number within parentheses indicates the number of screws used. 1) Remove the multifeeder tray. (See IV-B1 ‘Removing the Multifeeder Tray.’) 2) Remove the video controller PCB unit. (See II-B-1 ‘Removing the Video Controller PCB unit.’) 3) Disconnect the connector [1] from the power supply PCB and the 9 connectors [2] from the DC controller PCB.
CHAPTER 3 5) Remove the power switch rod [5]. 7) Remove the 7 screws [8]. Refer to the $ making to the side of the screw holes to identify the screws to remove. One of the screws [9] need not be removed. [8] [5] Figure 3-2-20 6) Remove the 6 screws [6]. Refer to the $ marking to the side of the screw holes to identify the screws to remove. One of the screws [7] need not be removed. [9] [6] Figure 3-2-22 [7] Caution: 1 .
CHAPTER 3 9) Remove the flexible cable [12], 5 screws [13], and lock support [14]; then, detach the DC controller PCB [15]. [13] [12] [14] D . Power Supply PCB Assembly 1 . Removing the power supply PCB See II-C-1 ‘Removing the DC Controller PCB’ for an outline of the flow of work used to disassemble/assemble the PCBs. 1) Remove the printer top unit. (See II-C-1 ‘Removing the DC Controller PCB.’) 2) Remove the flexible cable [1] and 7 screws [2]; then, detach the power supply PCB [3].
CHAPTER 3 III. DRIVE MECHANISMS A. Main Motor 1 . Removing the main motor 1) Remove the front cover and the left cover. (See I-A-3 ‘removing the Front Cover’ and I-A-4 ‘Removing the Left Cover.’) 2) Remove the pickup guide assembly. (See IV-B-2 ‘Removing the Manual Feed Pickup Roller.’) 3) Remove the screws [1], and open the left rail [2]. 5) Disconnect the connector [4] and remove the three 3 screws [5]; then, detach the main motor [6].
CHAPTER 3 B . Drive Assembly 1 . Removing the drive assembly 1) Remove the main motor. (See III-A-1 ‘Removing the Main Motor.’) 2) Remove the manual feed pickup roller. (See IV-B-2 ‘Removing the Manual Feed Pickup Roller.’) 3) Disconnect the 4 connectors [1], and free the harness from the harness guide [2]. 5) Remove the 4 screws [5], and detach the drive assembly [6]. [5] [1] [6] [5] Figure 3-3-6 [2] Figure 3-3-4 4) Remove the E-ring [3], and detach the registration clutch [4].
CHAPTER 3 IV. FEEDING MECHANISMS 2 . Replacing the cassette separation pad A. Cassette Pickup Assembly 1 . Replacing the cassette pickup roller Caution: Be sure to replace the cassette pickup roller at the same time. Caution: Be sure to replace the cassette separation pad at the same time. 1) Slide out the cassette, and move the front of the Printer to the edge of the table. 2) Push the lever [1] to the left, and detach the cassette pickup roller [2].
CHAPTER 3 5) Mount the new cassette separation pad [3] and the spring [4] at the same time. [3] 3) Disconnect the 3 connectors [3], and free the harness form the harness guide. 4) Remove the 2 screws [4]. [4] [4] [3] Figure 3-4-5 3 . Removing the paper size setecting switch 1) Remove the printer top unit. (See II-C-1 ‘Removing the DC Controller PCB.’) 2) Remove the 2 claws [1], and detach the left cassette rail assembly [2] from the bottom frame.
CHAPTER 3 6) Remove the 2 upper claws (longer) [8] and the 2 lower claws (shorter) [9]; then, detach the grounding plate [10]. Detach the paper size detecting switch [11]. 4) Remove the cassette pickup clutch [3]. [3] [11] [10] [8] [9] Figure 3-4-11 Figure 3-4-9 4 . Removing the cassette pickup clutch 1) Remove the drive assembly. (See III-B-1 ‘Removing the Drive Assembly.’) 2) Remove the cassette pickup roller. (See IV-A-1 ‘Replacing the Cassette Pickup Roller.
CHAPTER 3 B . Multifeeder Tray Pickup Assembly 1 . Removing the multifeeder tray 1) Slide out the cassette, and detach the front cover. (See I-A-3 ‘Removing the Front Cover.’) 2) Lift the claw on each side [1] to detach, one after the other. [1] Caution: After mounting, check to make sure that the holding plate [4] is pushed down by the manual feed pickup roller cam [3].
CHAPTER 3 Caution: When mounting the pickup guide assembly, be sure to refer to the following diagram. Take care not to damage or leave out the sensor [3]. 3 . Mounting the Manual Feed Pickup Roller 1) Fit the left side of the manual feed pickup roller [1] into the machine; then, fit the right side of the shaft to mount the gear [2], and fit the left side of the shaft.
CHAPTER 3 4 . Removing the manual feed separation pad 1) Remove the manual feed pickup roller. (See IV-B-1 ‘Removing the Multifeeder Tray.’) 2) Remove the manual feed separation pad [1]. 5 . Removing the multifeeder paper sensor 1) Remove the right cover. (See I-A-5 ‘Removing the Right Cover.’) 3) Disconnect the connector [1]. 4) Remove the claws [2], and detach the multifeeder paper sensor [3]. [1] [3] [1] [1] [2] Figure 3-4-21 Figure 3-4-20 6 .
CHAPTER 3 3) Remove the screw [2], and detach the multifeeder pickup solenoid [3]. [2] C. Registration Roller Assembly 1 . Removing the registration roller 1) Remove the drive assembly. (See III-B-1 ‘Removing the Drive Assembly.’) 2) Remove the screw [1], and detach the grounding plate [2]. [2] [1] [3] Figure 3-4-23 Figure 3-4-24 3) Pull off the bushing [3] on the left to the left. 4) Remove the caw [4] on the right, and detach the registration roller assembly [5].
CHAPTER 3 5) Remove the stepped screw [6], and detach the bushing [7]. 6) Remove the registration roller [8]. [8] [7] [6] Figure 3-4-26 2 . Removing the registration paper sensor 1) Remove the printer top unit. (See II-D-1 ‘Removing the DC Controller PCB’.) 2) Remove the drive assembly. (See III-B-1 ‘Removing the Drive Assembly.’) 3) Remove the 2 claws [1], and detach the registration paper sensor [2].
CHAPTER 3 V. EXPOSURE MECHANISMS 4) Remove the dust-proofing sponge [5]. A. Laser/Scanner Assembly 1 . Construction The following show the construction of the laser/scanner assembly. [5] [2] Figure 3-5-3 [1] [1] Scanner assembly [2] Laser assembly 5) Disconnect the 3 connectors [6]. Figure 3-5-1 [6] 2 . Removing the laser/scanner assembly 1) Remove the cartridge. 2) Remove the connector cover [1] and connector [2]. 3) Remove the 5 claws [3], and detach the scanner upper cover [4].
CHAPTER 3 VI. CHARGING/DEVELOPING/ CLEANING MECHANISMS A. EP-65 Cartridge 1 . Construction The EP-65 cartridge consists of a photosensitive drum, primary charging roller, developing assembly, and cleaner, but its construction does not permit disassembly. [2] [4] B . Transfer Charging Roller 1 . Removing the transfer charging roller 1) Remove the front cover. (See I-A-3 ‘Removing the Front Cover.’) 2) Holding the shaft assembly [1], detach the transfer charging roller [2].
CHAPTER 3 2 . Cleaning the inside of the fixing assembly or replacing its parts VII. FIXING SYSTEM A. Fixing Assembly 1 .
CHAPTER 3 3 . Removing the fixing assembly 1) Remove the upper cover. (See I-A-1 of this chapter.) 2) Open the fixing upper cover. 3) Remove the claw [1], and remove the gear [2]. 5) Disconnect the 2 connectors [4], and free the harness from the harness guide. [4] [2] [1] [4] Figure 3-7-4 Figure 3-7-2 6) Disconnect the connector [5]. 4) Pull the fixing upper cover [3] to the front; then, slide it to the right to detach.
CHAPTER 3 7) Remove the 2 screws [6], and detach the fixing assembly [7]. 4 . Removing the pressure roller 1) Remove the fixing assembly. (See VII-A3 of this chapter.) 2) Push down the pressure releasing lever [1] to remove the pressure. [6] [1] Figure 3-7-7 [7] 3) Remove the 2 screws [2], and detach the 2 linking plates [3]. Be sure not to remove the spring [4].
CHAPTER 3 4) Remove the 2 screws [5], open the pressure roller assembly [6] to about 90, remove the D-cut shaft on the right, and slide it to the right to remove. When opening the pressure roller assembly, apply force as necessary. 5) Remove the 2 screws [9] of the pressure roller assembly, and remove the inlet guide [10]. [10] [5] [9] Figure 3-7-11 [6] 6) Remove the spring [11], and detach the bushing [12], pressure releasing lever [13], and support plate [14]. 7) Remove the pressure roller [15].
CHAPTER 3 5 . Removing the fixing roller and the fixing heater 1) Remove the pressure roller assembly. (See VII-A-4 of this chapter.) 2) Remove the 2 screws [1] of the fixing roller assembly; then, detach the fixing roller [2] and the fixing heater [3]. [1] 6 . Mounting the fixing roller and the fixing heater 1) Open the separation claws [1]. Obtain a sheet of A3/11 x 17 white paper, fold it in 4, and fit it as shown.
CHAPTER 3 Note: 1 . Be sure to mount the fixing heater so that its edge with print faces upward. Further, take care not to touch the glass portion of the fixing h e a t e r. 2 . When mounting the fixing roller [2], take care not to scratch it by any of the separation claws. Further, be sure that the fixing roller is slid to the gear side [4]. 4) Prepare a length of paper (plain paper) cut to a width of about 20 mm.
CHAPTER 3 6) After mounting the fixing roller and the fixing heater, push the fixing aluminum core [8] with your finger lightly so as to make sure that the thermal switch [9] returns to its initial position by the spring. 8) After making the check, mount the fixing assembly to the machine using the steps used to remove it but in reverse. [8] [9] Figure 3-7-21 7) Check to make sure that the static removing brush [10] is in contact with the fixing roller core [11].
CHAPTER 3 VIII. PAPER FEEDER A. External Covers [1] B . Pickup Assembly 1 . Replacing the cassette pickup roller See IV-A-1 ‘Replacing the Cassette Pickup Roller.’ 2 . Replacing the cassette separation pad See IV-A-2 ‘Replacing the Cassette Separation Pad.’ [1] Top plate (7) 3 . Cassette paper sensor 1) Remove the top plate. 2) Disconnect the connector [1], and detach the cassette paper sensor [2]. [2] Figure 3-8-1 [1] Figure 3-8-2 4 . Removing the paper feeder paper sensor 1) Remove the top plate.
CHAPTER 3 5 . Removing the paper size detecting switch 1) Remove the paper feeder pickup assembly. (See steps 1) and 2) of VIII-C-1 ‘Removing the Paper Feeder Pickup Clutch.’) 2) Remove the screw [1], and disconnect the connector [2]; then, detach the paper switch assembly [3]. [1] 4) Remove the 2 paper claws (longer) [5] and the 2 lower claws (shorter) [6]; then, detach the grounding plate [7]. Remove the paper size detecting switch [8]. [8] [2] [7] [5] [6] [3] Figure 3-8-6 6 .
CHAPTER 3 1) Remove the paper feeder pickup assembly. (See VIII-C-1 ‘Removing the Paper Feeder Pickup Clutch.’) 2) Remove the screw [1], and detach the grounding plate [2]. 3) Remove the 2 springs [3]. [1] [3] [2] Figure 3-8-10 Caution: When mounting, hold down the pickup roller slave assembly [4] so that the spring [3] is as shown; then, fit the spring [3] with the boss [5]. Figure 3-8-8 [3] [4] Caution: When mounting, be sure that the ground plate [2] is as indicated.
CHAPTER 3 4) Slide the slave roller assembly [4] slightly to the front. 6) Slide the feeding roller assembly [10] to the right to detach. [6] [10] [7] Figure 3-8-14 7) Remove the bushing [11] and the bushing [12]. [4] [12] Figure 3-8-12 Caution: Take care so that the bushing [6]will not slip off the bushing [7]. [11] 5) Remove the 2 E-rings [8], and detach the gear [9].
CHAPTER 3 C. Drive Mechanism 1 . Removing the paper feeder pickup clutch 1) Disconnect the 4 connectors [1], and free the harness from the harness guide. 3) Remove the 4 screws [4] and the grounding wire [5]; then, detach the pickup motor assembly [6]. [6] [1] [1] [1] [5] [4] [4] Figure 3-8-16 Figure 3-8-18 2) Remove the 2 screws [2], and detach the paper feeder pickup assembly [3]. 4) Remove the pickup roller [7]. (See III-A-1 ‘Removing the Cassette Pickup Roller.
CHAPTER 3 6) Remove the gear [10], and detach the paper feeder pickup clutch [11]. D . PCBs 1 . Removing the paper feeder controller PCB 1) Remove the top plate. 2) Disconnect all connectors from the paper feeder controller PCB [1]. 3) Remove the 2 screws [2], and slide the paper feeder controller PCB [1] to detach. [11] [10] [2] Figure 3-8-20 [1] 2 . Removing the paper feeder pickup motor 1) Remove the paper feeder pickup assembly. (See VIII-C-1 ‘Removing the Paper Feeder Pickup Clutch.
CHAPTER 4 TROUBLESHOOTING I. II. INTRODUCTION ............................... TROUBLESHOOTING IMAGE FAULTS ................................................ III. MEASURES AGAINST JAMS ....... IV. FEEDING FAULTS ............................ V. MALFUNCTIONS ............................... VI. CORRECTING A FAULT STATUS CONDITION ........................................ 4-1 4-10 4-17 4-21 4-23 4-25 VII. STANDARDS AND ADJUSTMENTS ................................. 4 - 3 1 VIII. MAINTENANCE AND INSPECTION .....
CHAPTER 4 I. INTRODUCTION A. Troubleshooting Flow Chart A fault occurring in the Printer is identified as being either of the following five: image fault, jam, feeding fault, malfunction, error status. If a fault occurs, isolate its cause using the flow chart, and then take the appropriate action give for the cause while keeping the following in mind: • • • When measuring the voltage between terminals of a connector, be sure to find out if the connector has poor contact.
CHAPTER 4 Make initial checks. Turn on the power switch. Is the Printer ready? No Yes Can a test print be made? (Note 1) Is the following message indicated: ‘Call Operator’ or ‘Call Service Person’? Yes No See the descriptions for error status. Yes Make a test print. Does a jam occur? Yes See the descriptions for jams. No Is the delivery paper normal? No See the descriptions for feeding faults. Yes Is the image faulty? (Note 2) Yes See the descriptions for image faults.
CHAPTER 4 Notes: 1 . When making a test print, be sure to use the same source of paper used when the fault occurred. If the source is not known, try all sources to reproduce the symptom. 2 . At times, the faulty image in question may not occur during test printing. If so, print from an external device, and take a guess in identifying the location of the fault; then, follow the troubleshooting steps to identify the cause. 3 .
CHAPTER 4 B . Making Initial Checks Before starting troubleshooting steps, make the following checks; if a fault is discovered, correct it and then advise the user on how to avoid it: 1. a. b. c. Installation environment The power supply voltage is ±10% of the rated voltage. The Printer is kept level. The ambient temperature is between 7.5ºC to 32.5ºC and the humidity is between 5% and 90%. d . The Printer is not in an area subject to ammonium gas or high temperature/humidity (e.g.
CHAPTER 4 C. Test Print Test printing takes either of two forms: engine test printing or controller test printing. If a fault occurs in the Printer, make a test print to identify the symptom. 1 . Engine test printing The Printer has a pattern consisting of horizontal lines (at intervals of about 0.6 mm). The Test Print switch is found at the rear of the Printer (Figure 1-4-2).
CHAPTER 4 • PRINT JOB LOG Indicates a job log list showing the most recent 55 jobs. • CONTINUOUS TEST Makes continuos Test Prints. (The printer back to READY key after SHIFT key and ENTER key to cancel CONTINUOUS TEST.) • PRINT EN CONFIG Prints the Ethernet configuration page. • CLEANING PAGE Prints the cleaning page used to clean the fixing roller. Refer to page 1-23 for the details. 1) Press the Go key so that the Printer enters off-line state.
CHAPTER 4 Canon Inc., LBP-2000 Printer Configuration Page [1] TEST MENU SHOW PAGE COUNT TEST PRINT PRINT PS FONTS PRINT PCL FONTS PRINT JOB LOG CONTINUOUS TEST PRINT EN CONFIG CLEANING PAGE [2] PCL MENU RESOLUTION = 600 COPIES = 1 PAGESIZE = LETTER ORIENTATION = PORTRAIT FORM = 60LINES FNTSRC = INTERNAL FONTNUM = 0 PT.SIZE = 12.00 PITCH = 10.
CHAPTER 4 The Configuration Page shown here is for a printer with the optional print server, hard disk, PS module, Flash ROM, and additional RAM memory installed. [1] TEST MENU Displays the test menu options. [2] PCL MENU Show the PCL print job settings, as determined by the PCL MENU options. [3] PS MENU(Only displayed if the optional Adobe PostScript 3 Modeule A-65 is installed) Displays the PostScript print job settings, as determined by the PS MENU options.
CHAPTER 4 [15] PRINTER DETAILS Displays the printer ROM DIMM version, version numbers of any istalled options, and the page counts.
CHAPTER 4 II. TROUBLESHOOTING IMAGE FAULTS If the cause of the symptom is identified as being an ‘image fault’ in reference to the flow chart (Figure 4-1-1), isolate the cause as follows and take the appropriate action: 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 2-11 2-12 2-13 2-14 2-15 2-16 2-1. Light: The output is obviously too light. Dark: The output is obviously too dark. Blank: The output is blank. Solid: The output is solid black. Dots: The output has dots (as if splashed over the face).
CHAPTER 4 2-2. Dark 1 . The image density setting is not correct. Action: Operate the external device to adjust the image density. 2 . The contact of the leaf spring for the drum ground and the contact of the cartridge are poor. Action: If dirt is found, clean the contact. If the problem is not corrected after cleaning, or deformation or damage is found, replace the faulty part. 3 . The contact of the leaf spring for the primary bias and the contact of the cartridge are poor.
CHAPTER 4 2-4. Solid black 1 . The contact of the leaf spring for the primary bias and the contact of the cartridge are faulty. Action: If dirt is found, clean the contact. If the problem is not corrected after cleaning, or deformation or damage is found, replace the faulty parts. 2 . The contact for the primary bias on the DC controller and the contact of the cartridge are poor. Action: If dirt is found, clean the contact.
CHAPTER 4 2-6. Soiled back 1 . The paper is soiled. Action: Replace the paper with paper fresh out of package. At the same time, advise the user on the correct method of storing paper. 2 . The setting and the type of paper used do not match. Action: Check the selected fixing mode, and change it to suit the type of paper used. 3 . There is dirt at specific intervals (cassette pickup roller, manual fee pickup roller, registration roller, transfer charging roller, delivery roller).
CHAPTER 4 2 - 1 0 . White spots 1 . The cartridge is running out of toner. Action: Remove the cartridge from the Printer, and shake it as instructed in Chapter 1; then, fit it back into the machine. If the problem is not corrected, replace the cartridge. 2 . The transfer charging roller is soiled or deformed. Action: Replace the transfer charging roller. 3 . The contact of the toner level sensor and the contact of the cartridge are poor. Action: If dirt is found, clean the contact.
CHAPTER 4 2 - 1 3 . Fixing faulty. 1 . The setting and the type of paper used do not match. Action: Correct the setting to suit the type of paper used. 2 . The nip of the fixing assembly is not as indicated. Action: Replace the fixing assembly. 3 . The fixing roller is soiled, defomed, or worn. Action: Replace the fixing assembly. 4 . The thermistor has deteriorated. Action: Replace the fixing assembly. 2 - 1 4 . Distorted image 1 .
CHAPTER 4 2 - 1 6 . Image wobble 1 . The setting and the type of paper used do not match. Action: Correct the setting to suit the type of paper used. 2 . The transfer charging roller is faulty. Action: Replace the transfer charging roller. Table 4-2-1 Dirt or White Spots at Specific Intervals in the Images Diameter (mm; approx.) Interval (mm; approx.
CHAPTER 4 III. MEASURES AGAINST JAMS The Printer’s paper path can broadly be divided into the following 5 blocks: [1] [1] Multifeeder pickup block [3] Paper feeder pickup block [5] Fixing/delivery block [5] [4] [2] [3] [2] Cassette pickup block [4] Transfer/feeding block Figure 4-3-1 If the fault in question has been identified as being a jam using the flow chart (Figure 4-1-1), find the location and then isolate the cause. 3-1. Multifeeder pickup block 1 .
CHAPTER 4 3 . The lever of the multifeeder sensor does not move smoothly, or is damaged or deformed. Action: Fit it so that it moves smoothly. If damaged or deformed, replace it. 4 . The position of the cam (manual feed roller) is wrong. Action: Check to be sure that the manual feed roller is correctly mounted. (See IV-B-2 ‘Removing the Manual Feed Pickup Roller’ in Chapter 3.) 5 . The gear is damaged. Action: Remove the multifeeder pickup assembly, and check the gears. Replace any damaged g e a r. 6 .
CHAPTER 4 3 . A part in the pickup drive assembly is damaged. Action: Remove the pickup drive assembly, and replace any damaged part. 4 . The paper feeder pickup motor (M201) is faulty. Action: Replace the paper feeder pickup motor. 5 . The paper feeder pickup clutch (CL201) is faulty. Action: Disconnect the connector J3 of the paper feeder pickup clutch. Measure the resistance between the connectors J3-1 and J3-2 on the harness side. If not about 192 ±19.2Ω replace the paper feeder pickup clutch. 6 .
CHAPTER 4 3-5. Fixing/delivery block 1 . The fixing roller does not rotate smoothly. Action: Check the gear for wear or chipping. If a fault is found, replace the fixing assembly. 2 . The fixing/separation claw is worn or damaged. Action: Replace the fixing assembly. 3 . The fixing roller or the pressure roller is deformed or scratched. Action: Replace the fixing assembly. 4 . The pressure (nip) of the pressure roller is not as indicated. Action: Replace the fixing assembly. 5 .
CHAPTER 4 IV. FEEDING FAULTS If the symptom has been identified as a feeding fault according to the flow chart (Figure 4-1-1), identify the location and correct the fault. 4-1. Double feeding 1 . The paper is not of a recommended type. Action: Replace the paper. At the same time, advise the user to use paper of a recommended type. 2 . If the fault is in the multifeeder tray, go to step 7. 3 . The paper is not set correctly. Action: Set the paper correctly in the cassette. 4 .
CHAPTER 4 4-3. Skew 1 . The paper is not set correctly. Action: Set the paper against the paper guides at the left/right and the rear end of the cassette. 2 . There is an accumulation of paper lint or dust on the registration roller or the feeding guide. Action: Clean the soiled area. 3 . The registration roller is deformed. Action: If scratched or deformed, replace it.
CHAPTER 4 V. MALFUNCTIONS If the symptom has been identified as a malfunction according to the flow chart (Figure 4-1-1), take the following action: 5-1. AC power is absent. 1 . The rated voltage is not present at the power outlet. Action: Advise the user that the rated voltage is not present at the power outlet. 2 . The power cord is not connected to the Printer’s power socket. Action: Connect the power cord. 3 . The power switch is faulty.
CHAPTER 4 5-4. Abnormal noise is heard from the fixing assembly. 1 . The fixing roller gear is not mounted correctly. Action: If chipping is discovered on the fixing roller gear or the drive gear, replace the drive gear or fixing assembly. 2 . The fixing assembly is faulty. Action: Replace the fixing assembly.
CHAPTER 4 VI. CORRECTING A FAULT STATUS CONDITION If the cause has been determined to be a “fault status condition” in relation to the Troubleshooting Flow Chart (Figure 4-1-1), be sure to go through the following: 6-1.
CHAPTER 4 6 - 3 . ‘E110 CALL FOR SERVICE’ (scanner unit fault) 1 . The connector of the BD signal line has poor contact. Action: Correct the connection of the connector J908 on the BD PCB and the connector J102 on the DC controller PCB. 2 . The laser/scanner unit fault (BD) signal is not generated properly. Action: Replace the laser/scanner unit. 3 . The connector of the scanner motor (M102) drive signal line has poor contact.
CHAPTER 4 6-7. ‘LOAD IN ’ is indicated although paper of the selected size is inside the cassette. 1 . The cassette detecting lever is damaged. Action: Replace the lever. 2 . The cassette paper sensor is faulty. Action: Replace the cassette paper sensor. 3 . The DC controller PCB is faulty. Action: Replace the DC controller PCB. 4 . The video controller PCB is faulty. Action: Replace the video controller PCB. 6-8.
CHAPTER 4 6 - 1 0 . ‘CASSETTE 1 MISSING’ is indicated in the presence of a cassette. 1 . The paper size detecting switch lever of the cassette is damaged. Action: Replace the paper size detecting switch. 2 . The DC controller PCB is faulty. Action: Replace the DC controller PCB. 3 . The video controller PCB is faulty. Action: Replace the video controller PCB. 6 - 1 1 .
CHAPTER 4 6 - 1 3 . ‘PAPER JAM’ is indicated in the absence of a jam, and the Printer fails to be ready. 1 . The registration paper sensor lever does not move smoothly. Or, it is damaged. Action: Mount it so that it moves smoothly. If damaged, replace it. 2 . The delivery sensor lever does not move smoothly. Or, it is damaged. Action: Mount it so that it moves smoothly. If damaged, replace it. 3 . The registration paper sensor (PI101) is faulty. Action: Replace the sensor. 4 .
CHAPTER 4 6 - 1 7 . ‘FLASH ERROR’ is indicated after replacing the optional flash ROM. 1 . The video controller PCB is faulty. Action: Turn off the power switch, and then turn it on. If the problem is not corrected, mount the optional flash ROM once again. If the problem is still not corrected, replace the video controller PCB. 6 - 1 8 . ‘PARALLEL INTERFACE ERROR’ is indicated after power is turned off and then on. 1 . The menu settings are wrong.
CHAPTER 4 VII. STANDARDS AND ADJUSTMENTS A. Making Mechanical Adjustments 1 . Checking the pressure (nip) of the pressure roller Caution: In the steps that follow, you will be asked to turn off the power switch while the Printer is in operation. Be sure to remove the option hard disk, if installed, before starting the steps; otherwise, turning off the power can damage the disk.
CHAPTER 4 B . Making Electrical Adjustments 1 . Adjusting the leading edge margin VR101 (Figure 1-4-2) on the DC controller PCB is adjusted in the factory, not requiring adjustment in the field. If you have replaced the DC controller PCB in the field, however, be sure to make adjustments. If you have replaced the laser/scanner unit, on the other hand, make adjustments if the leading edge margin is not 2.0 ±1.2 mm (check by making several test prints).
CHAPTER 4 C. Copying the Counter Readings If you have replaced the video controller PCB, be sure to perform the following work: Caution: If you are mounting a hard disk (option), wait until you have copied the counter readings. 1) Remove the 2 EEPROMs (IC4, IC5) from the exiting video controller PCB. 2) Making sure that the cut-off faces down, mount the EEPROM to the new video controller PCB.
CHAPTER 4 D . Variable Resistors (VR), Light-Emitting Diodes (LED), Check Pins, Jumpers, and Switches by PCB Of the VRs, LEDs, check pins, jumpers, and switches used in the Printer, those needed for servicing in the field are discussed. Do not touch the VRs or check pins into indicated in the tables; they are for use at the factory only, and require special tools and high accuracy. Notes: 1 . Some LEDs emit dim light because of leakage current even while they are OFF.
CHAPTER 4 2 . Video controller PCB J6 10 1 69 72 69 72 69 72 B1 A1 IC5 J9 ROM DIMM EEPROM IC4 J1 J2 J3 B20 A20 26 1 1 18 1 36 19 50 25 34 144 143 J10 J5 J8 1 2 1 4 1 4 1 4 J4 RAM DIMM 2 J7 2 1 4 3 33 Figure 4-7-5 Note: If you must replace the video controller PCB, be sure to remove the following from the old PCB and mount them back to the new PCB: RAM DIMM, ROM DIMM (except program ROM), EEP-ROM (indicated by dashed lines).
CHAPTER 4 4 . Control panel PCB J1 1 J2 5 .
CHAPTER 4 Table 4-7-2 shows the DIP switch settings. Table 4-7-2 Switch Description ON : set all settings stored on the print server to factory settings. use settings stored on the print server to start up. OFF ON OFF : identify the following automatically at time of print server start-up: 10Base-T/100Base-TX, full-duplex/half-duplex. use settings of switches 3 and 4 to start up. Switch 3 ON : OFF : start-up100Base- TX start-up10Base- T OFF Switch 4 ON : OFF : start up for full-duplex.
CHAPTER 4 VIII. MAINTENANCE AND INSPECTION A. Periodically Replaced Parts Note: A periodically replaced part is one that must be replaced at certain intervals to ensure a specific level of machine performance. (They must be replaced regardless of the presence/ absence of damage, as they will significantly affect the machine operation once they fail.) If possible, schedule the replacement to coincide with a scheduled service visit. The Printer does not have parts that need periodical replacement. B .
CHAPTER 4 2 . Paper Feeder Table 4-8-2 As of August 2001 No. Part name Part No. Q’ty Average life Remarks 1 Cassette roller pickup FF6-0981-000 1 80,000 pages To be replaced by the user. (Note 1) 2 Cassette pad separation FB5-8099-000 1 80,000 pages To be replaced by the user. (Note 1) Notes: 1 . The spring (FS7-2593-000) must be replaced at the same time. 2 . The above values are estimates only, and are subject to change based on future data. C.
CHAPTER 4 D . Points to Note for Cleaning a . Cassette Pick Roller, Feeding Roll Use lint-free paper and alcohol. b . Manual Feed Pickup Roller Use lint-free paper and alcohol. If the user often uses label sheet or the like (apt to leave dirt) for the multimeter, thus causing pickup faults, advise the use of the manual feed tray cleaning tool. (For instructions on how to use the tool, see VII-4 ‘Manual Feed Pickup Roller’ in Chapter 1.) c .
CHAPTER 4 E . Standard Tools You will need the following standard stools when servicing the Printer: Table 4-8-3 No. Tool name Tool No. Description 1 Tool bag TKN-0001 2 Jumper wire TKN-0069 3 Gap gauge CK-0057 0.02 to 0.3 mm 4 Spring gauge CK-0058 For checking spring pressure (0 to 600 g).
CHAPTER 4 F. Special Tools You need not obtain tools other than those in the standard tools set. G. Solvents and Oils Table 4-8-4 No. Name Composition Uses Remarks 1 Alcohol Alcohol, w a t e r, surface activating agent Cleaning: e.g., plastic, rubber. • Do not bring near fire. • Procure locally. • CI or IPA may be substituted. 2 Solvent Fluorine family hydrocarbon, chlorine family hydrocarbon, alcohol Cleaning; e.g., metal (oil stains, toner stains). • Procure locally.
CHAPTER 4 IX. ARRANGEMENT OF ELECTRICAL PARTS A.
CHAPTER 4 Table 4-9-1 Symbol 4 - 44 Name Notation Description Switch SW3 Right door switch Switch SW4 Left door switch Switch SW105 Cassette paper size detecting switch Switch SW201 Paper feed paper size detecting switch Sensor PI101 Registration paper sensor Sensor PI102 Multifeeder paper sensor Sensor PI103 Delivery sensor Sensor PI104 Cassette paper sensor (DC controller PCB) Sensor PI201 Paper feeder feed paper sensor Sensor PI202 Paper feeder cassette paper sensor
CHAPTER 4 B .
CHAPTER 4 Table 4-9-2 Symbol CL M 4 - 46 Name Notation Description Solenoid SL101 Multifeeder pickup solenoid Clutch CL101 Cassette pickup clutch Clutch CL102 Registration Clutch CL201 Paper feed pickup clutch Motor M101 Main motor Motor M201 Paper feeder pickup motor clutch
CHAPTER 4 C.
CHAPTER 4 D .
CHAPTER 4 Table 4-9-4 No.
CHAPTER 4 E.
CHAPTER 4 • Paper feeder J4 J5 J154 J155 J2 J1 J3 J6 J901/J1507 J901/J1507 J153 Figure 4-9-6 4 - 51
APPENDIX I. II. GENERAL TIMING CHART ........... A-1 GENERAL CIRCUIT DIAGRAM ... A-3 III. LIST OF SIGNALS ............................ A-5 IV. MESSAGES TABLE ..........................
APPENDIX I. GENERAL TIMING CHART General Timing Chart (1/1) • A4, 2 Sheets, Continuous Fixing roller 140˚C Power switch ON Sequence WAIT*1 WMUP (unit: sec) STBY INTR PRINT LSTR STBY WMUPR Target temperature control 1 Fixing heater (H101) PRINT Temperature control based on paper type 2 Pre-feed signal (/PRFD) 3 Print start command (/PRNT) 4 Main motor (M101) 0.15 5 Scanner motor (M102) 4.5 (approx.) 6 Scanner ready signal (/SCNRDY) 0.46 7 Pickup clutch (CL101) 0.
APPENDIX A-2
APPENDIX II.
APPENDIX General Circuit Diagram (2/2) 6 5 4 3 2 1 To Printer or paper feeder DC controller PCB or option controller PCB Paper size detecting switch J101 or J4 1 2 3 4 5 6 7 8 9 10 11 /RXDOU /STBOUT SCLKOUT GND /TXDOU /STERM +5V +24V +24V GND GND SW201 J153 1 2 3 4 5 J901DF or J1507DF 6 5 4 3 2 1 CL M 2 1 D 4 3 2 1 7 6 5 4 3 2 1 J7 J8 J9 J10J11J12 J7 J8 J9 J10J11J12 J6 J5 J4 J3 J2 J1 1 2 3 4 5 6 1 2 3 4 5 6 7 J6 J5 J4 J3 J2 J1 J901DM J901MB /B B /A A 5 4 3 2 1 J1 2 1 J3 4 3 2 1
APPENDIX III. LIST OF SIGNALS A.
APPENDIX Connector P i n J104 J105 A-6 Notation 7 GND 8 GND 9 GND I/O Logic Signal 10 /PPRDY Input L Printer power ready signal 11 / C C RT Output L State change notice signal 12 /SBSY Output L Status busy signal 13 /PCLK Output Pulse Printer clock signal 14 /STS Output L Status 15 /RDY Output L Ready signal 16 /TOP Output L TOP signal 17 /CBSY Input L Command busy signal 18 /CCLK Input Pulse Controller clock signal 19 /CMD Input L Command 20
APPENDIX Connector P i n J105 Notation I/O Logic Signal 13 +24V 14 +24V 15 GND 16 GND 17 +5V 18 +5V 19 GND 20 GND 21 +3.3V 22 +3.3V 23 +3.3V 24 +3.3V 25 +3.3V 26 +3.3V 27 +3.3V 28 +3.
APPENDIX Connector P i n J106 J107 J108 J109 J110 A-8 Notation 17 RGON 18 +24V 19 CSTFD I/O Logic Signal Output H Registration clutch drive signal Output H Cassette pickup clutch drive signal 1 DOR24VIN Input H Front door open/closed detection signal 2 DOR24VOUT Output H Front door open/closed detection signal 1 +5V 2 GND 3 /MPSNSJ Output L Multifeeder paper detection signal 1 FANDRV Output H Fan drive signal 2 GND 3 FANLOCK Input H Fan lock signal 1 PS
APPENDIX B .
APPENDIX IV. MESSAGES TABLE a . JUST MESSAGE Meaning Message Action WARMING UP... The printer is warming up. The printer will be ready in a moment. READY The printer is online. The printer is ready to print. PRINTING Printing... The printer is printing. PAU S E D The printer is offline. Press the Go key on the printer to start printing. READY FLUSHING The printer is canceling the print job. Wait a moment for the operation to complete.
APPENDIX b . SERVICE CALL ERROR Message Meaning E000 CALL FOR SERVICE A fuser error occurred. E001 CALL FOR SERVICE A fuser overheating error occurred. E003 CALL FOR SERVICE A fuser low-temperature error occurred. E011 CALL FOR SERVICE A motor error occurred. E110 CALL FOR SERVICE A scanner error occurred. E676 CALL FOR SERVICE A communication error occurred between the controller and the printer E677/6F-61 CALL FOR SERVICE An internal ROM check error occurred.
APPENDIX c . WARNING MESSAGE Message Meaning Action READY TONER LOW The toner is low. Remove the toner cartridge, slowly shake it 5-6 times, and then replace it. If this message is displayed again, replace the current toner cartridge with a new one. KEY NOT VALID A button that is not enabled in the current function is pressed. Press the correct key to complete the current function. MEMORY OVERFLOW A memory overflow has occurred.
APPENDIX d . NORMAL ERROR Message Meaning Action TONER CART MISSING No toner cartridge is installed. Install the toner cartridge, and then press the Go key on the printer. LOAD IN Out of paper. Load paper into printer. LOAD IN MANUAL Out of paper. Load paper into Multifeeder Tray. LOAD CLEANING PAGE IN MANUAL Cleaning the fixing assembly. Load the Multifeeder tray with the Cleaning Page generated by the printer. Then, press the Go key to feed the Cleaning Page.
APPENDIX Message Meaning Action FLASH ERROR The optional Flash ROM error occurred. Replace the optional Flash ROM. WRITING DISK ERROR Unable to write to the printer hard disk. Measure 1: Make sure that the printer hard disk is installed correctly. Measure 2: Turn off the printer, and the turn it on again. Measure 3: Format the printer hard disk. READING DISK ERROR Unable to read the printer hard disk. Measure 1: Make sure that the printer hard disk is installed correctly.
APPENDIX e . The following messages are displayed on the SERVICE mode. Message Meaning Action NVRAM OK All NVRAMs work correctly. NVRAMx ERROR An error occurred in the NVRAMx. Reinstall or replace the NVRAM. WRITING NVRAMx ERROR A writing error occurred in the NVRAMx. Replace the NVRAM. CHECK NVRAM Incorrect information has been found in the NVRAM. Replace the NVRAM.
APPENDIX f. The following messages are displayed as the HIDDEN function. Message Meaning Action COLD RESET A4 The printer is performing a cold reset with A4 to restore the factory default settings. Wait a moment for the operation to complete. COLD RESET LTR The printer is performing a cold reset with Letter to restore the factory default settings. Wait a moment for the operation to complete. PANEL CHECK Panel check is being performed. Wait a moment for the operation to complete.
Prepared by Consumer Imaging Products Quality Assurance Dept.1 Consumer Imaging Products Quality Assurance Div Office Imaging Products Quality Assurance Center CANON INC. REVISION 0 ( AUG.
CANON INC.
