Canon LBP-2000 Service Manual

REVISION 0FY8-13HQ-000COPYRIGHT  2001 CONON INC. CANON LBP-2000 REV.0 AUG.2001AUG. 2001SERVICEMANUALDownload Service Manual And Resetter

CHAPTER 11 - 4B. Options1 . Built-in print servera. Hardware1) Interface 10Base-T, 100Base-TX2) CPU AXIS: EXTRAX100LX (32-bit RISC CPU 100 MHz)3) ROM

2 - 61CHAPTER 2The following is a block diagram of the video controller circuit:ExpansionRAM (option)<J4>ExpansionROM (option)<J1/J2/J3>Bu

CHAPTER 22 - 62B. Operation Panel1. OutlineThe operation panel has one LCD with 16 characters by 2 lines, six switches, and four LEDs.The operation pa

2 - 63CHAPTER 2C. Self TestThe printer has the function to check the condition of the video controller by executing the selfdiagnosis program of the v

CHAPTER 22 - 647) If the Value key is pressed, all the LEDs are lit and the right half of the LCD (8 columns/bothrows) is illuminated. Releasing the k

2 - 65CHAPTER 2VII. PAPER FEEDERA. OutlineA paper feeder is used to pick up paper from any of the cassettes set inside, forwarding it to itshost print

CHAPTER 22 - 66B. Inputs to and Outputs from the Paper Feeder Controller+5VPaper feeder controller PCBFeedpaper sensorPI201J2-1-3-2J155-3-1-2FSENWhen

2 - 67CHAPTER 2C. Pickup/Feeding Operation1. OutlineThe paper feeder pickup motor is a stepping motor, and its speed is controlled by the paper feeder

CHAPTER 22 - 68The following is an outline diagram of the drive mechanism:M201CL201Feeding rollerCassette separation padPaper feeder pickup motor driv

2 - 69CHAPTER 2Basic Sequence of Operation• 3 paper feeders, pickup from bottommost; A4PF3 pickup clutchPF3 pickup motorPF3 cassettepaper sensorPF2 pi

CHAPTER 22 - 70D. Detecting JamsThe feed paper sensor (PI201) is used to check the presence/absence of paper and to find out ifpaper is moving correct

1 - 5CHAPTER 1III. SAFETYA. Safety of the Laser UnitAlthough invisible, laser light is used inside the laser/scanner unit. Do not disassemble the lase

CHAPTER 3MECHANICAL SYSTEMTo disassemble/assemble the Printer, following the instructions given in this chapter. The serviceperson is expected to iden

3 - 1CHAPTER 3I. EXTERNALS AND CONTROLSA. External Covers[1][2][3][6][4][5][1] Control panel [2] Cassette[3] Multifeeder tray [4] Front cover[5] Upper

CHAPTER 33 - 22 . Mounting the upper cover and the con-trol panel1) Mount the upper cover [2] with 2 screws[1].[2][1]Figure 3-1-6Caution: After mounti

3 - 3CHAPTER 32) Connect the connector [5] to the controlpanel, and mount the control panel [6]to the upper cover [7].[5][6][7]Figure 3-1-83) Mount th

CHAPTER 33 - 45 . Removing the right cover1) Remove the upper cover.2) Slide out the front cover slightly.3) Remove the screw [1], and detach theright

3 - 5CHAPTER 3Caution: When mounting the heat dis-charging fan, be sure to pay at-tention to the direction of air cur-rent.Figure 3-1-16C. Door Switch

CHAPTER 33 - 62 . Removing the right door switch1) Remove the video controller PCB. (See VII-B-1 ‘Removing the Video Controller PCBunit.’)2) Remove th

3 - 7CHAPTER 38) Disconnect the relay connector [10], andfree the harness from the harness guide.[10]Figure 3-1-239) Remove the claw [11], and detach

CHAPTER 33 - 8II. PCBSA. Arrangement of the PCBs[1][2][3][4][1] Video controller PCB[2] DC controller PCB[3] Power supply PCB[4] Built-in print server

3 - 9CHAPTER 32 . Removing the video controller PCB1) Remove the rear cover. (See I-A-6 ‘Remov-ing the Rear Cover.’)2) Remove the connector cover [1].

CHAPTER 11 - 6IV. NAMES OF PARTSA. External View1 . Printer engine• Front of the printer[8][7][6][5][4][3][2][1]Figure 1-4-1• Rear of the printer[10][

CHAPTER 33 - 104 . Mounting the RAM DIMM (option)Caution: The RAM DIMM must be one spe-cifically designed for the Printer.The location of the cut-off

3 - 11CHAPTER 31) Push down the ROM slot lever [1].[1]Figure 3-2-122) Holding it so that the cut-off [2] is asshown, insert the ROM DIMM [3] alongthe

CHAPTER 33 - 12C. DC Controller PCB1 . Removing the DC controller PCBThe following is an outline of the work flowused to disassemble/assemble PCBs:Not

3 - 13CHAPTER 35) Remove the power switch rod [5].[5]Figure 3-2-206) Remove the 6 screws [6]. Refer to the $marking to the side of the screw holes toi

CHAPTER 33 - 149) Remove the flexible cable [12], 5 screws[13], and lock support [14]; then, detachthe DC controller PCB [15].[12][13][13][14][15]Figu

3 - 15CHAPTER 3III. DRIVE MECHANISMSA. Main Motor1 . Removing the main motor1) Remove the front cover and the left cover.(See I-A-3 ‘removing the Fron

CHAPTER 33 - 16B. Drive Assembly1 . Removing the drive assembly1) Remove the main motor. (See III-A-1 ‘Re-moving the Main Motor.’)2) Remove the manual

3 - 17CHAPTER 3IV. FEEDING MECHANISMSA. Cassette Pickup Assembly1 . Replacing the cassette pickup rollerCaution: Be sure to replace the cassettesepara

CHAPTER 33 - 185) Mount the new cassette separation pad[3] and the spring [4] at the same time.[3][4]Figure 3-4-53 . Removing the paper size setecting

3 - 19CHAPTER 36) Remove the 2 upper claws (longer) [8] andthe 2 lower claws (shorter) [9]; then, de-tach the grounding plate [10]. Detach thepaper si

1 - 7CHAPTER 1• Behind the front cover[4][3][1][2]Figure 1-4-31: Static eliminating brush2: Transfer charging roller3: Toner cartridge guide4: Registr

CHAPTER 33 - 20B. Multifeeder Tray Pickup Assembly1 . Removing the multifeeder tray1) Slide out the cassette, and detach thefront cover. (See I-A-3 ‘R

3 - 21CHAPTER 3Caution: When mounting the pickup guideassembly, be sure to refer to thefollowing diagram. Take care notto damage or leave out the sens

CHAPTER 33 - 224 . Removing the manual feed separationpad1) Remove the manual feed pickup roller.(See IV-B-1 ‘Removing the MultifeederTray.’)2) Remove

3 - 23CHAPTER 33) Remove the screw [2], and detach themultifeeder pickup solenoid [3].[2][3]Figure 3-4-23C. Registration Roller Assembly1 . Removing t

CHAPTER 33 - 245) Remove the stepped screw [6], and de-tach the bushing [7].6) Remove the registration roller [8].[6][7][8]Figure 3-4-262 . Removing t

3 - 25CHAPTER 3V. EXPOSURE MECHANISMSA. Laser/Scanner Assembly1. ConstructionThe following show the construction of thelaser/scanner assembly.[1][2][1

CHAPTER 33 - 26VI. CHARGING/DEVELOPING/ CLEANING MECHANISMSA. EP-65 Cartridge1. ConstructionThe EP-65 cartridge consists of a photosen-sitive drum

3 - 27CHAPTER 3VII. FIXING SYSTEMA. Fixing Assembly1. ConstructionThe fixing assembly has the following con-struction:[2] [1] [4][3][6][5]Figure 3-7-1

CHAPTER 33 - 283 . Removing the fixing assembly1) Remove the upper cover. (See I-A-1 of thischapter.)2) Open the fixing upper cover.3) Remove the claw

3 - 29CHAPTER 37) Remove the 2 screws [6], and detach thefixing assembly [7].[6][6][7]Figure 3-7-64 . Removing the pressure roller1) Remove the fixing

CHAPTER 11 - 8B. Cross Section1 . Printer engine[4][3][2][1] [5] [6] [7] [9][8][12][13][14][11] [10][19] [15][17] [16][18]Figure 1-4-51: Registration

CHAPTER 33 - 304) Remove the 2 screws [5], open the pres-sure roller assembly [6] to about 90, re-move the D-cut shaft on the right, andslide it to th

3 - 31CHAPTER 35 . Removing the fixing roller and the fix-ing heater1) Remove the pressure roller assembly.(See VII-A-4 of this chapter.)2) Remove the

CHAPTER 33 - 32Note: 1. Be sure to mount the fixing heaterso that its edge with print facesupward.Further, take care not to touchthe glass portion of

3 - 33CHAPTER 36) After mounting the fixing roller and thefixing heater, push the fixing aluminumcore [8] with your finger lightly so as tomake sure t

CHAPTER 33 - 34VIII. PAPER FEEDERA. External Covers[1][1] Top plate (7)Figure 3-8-1B. Pickup Assembly1 . Replacing the cassette pickup rollerSee IV-A-

3 - 35CHAPTER 35 . Removing the paper size detectingswitch1) Remove the paper feeder pickup assem-bly. (See steps 1) and 2) of VIII-C-1 ‘Re-moving the

CHAPTER 33 - 361) Remove the paper feeder pickup assem-bly. (See VIII-C-1 ‘Removing the PaperFeeder Pickup Clutch.’)2) Remove the screw [1], and detac

3 - 37CHAPTER 34) Slide the slave roller assembly [4] slightlyto the front.[4][6][7]Figure 3-8-12Caution: Take care so that the bushing[6]will not sli

CHAPTER 33 - 38C. Drive Mechanism1 . Removing the paper feeder pickupclutch1) Disconnect the 4 connectors [1], and freethe harness from the harness gu

3 - 39CHAPTER 36) Remove the gear [10], and detach the pa-per feeder pickup clutch [11].[10][11]Figure 3-8-202 . Removing the paper feeder pickupmotor

1 - 9CHAPTER 1V. INSTALLATIONA. Points to Note About InstallationThe Printer is thoroughly adjusted and inspected at the factory before it is packed a

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CHAPTER 4TROUBLESHOOTINGI. INTRODUCTION ... 4 - 1II. TROUBLESHOOTING IMAGEFAULTS ...

4 - 1CHAPTER 4I. INTRODUCTIONA. Troubleshooting Flow ChartA fault occurring in the Printer is identified as being either of the following five: image

CHAPTER 44 - 2See the descriptions for error status.See the descriptions for jams.Turn on the power switch.Is the Printer ready?Make a test print.Does

4 - 3CHAPTER 4Notes: 1 . When making a test print, be sure to use the same source of paper used when the faultoccurred. If the source is not known, tr

CHAPTER 44 - 4B. Making Initial ChecksBefore starting troubleshooting steps, make the following checks; if a fault is discovered, correct itand then a

4 - 5CHAPTER 4C. Test PrintTest printing takes either of two forms: engine test printing or controller test printing. If a faultoccurs in the Printer,

CHAPTER 44 - 6• PRINT JOB LOGIndicates a job log list showing the most recent 55 jobs.• CONTINUOUS TESTMakes continuos Test Prints.(The printer back t

4 - 7CHAPTER 4<TEST PRINT>Canon Inc., LBP-2000 PrinterConfiguration Page[1] TEST MENUSHOW PAGE COUNTTEST PRINTPRINT PS FONTSPRINT PCL FONTSPRINT

CHAPTER 44 - 8The Configuration Page shown here is for a printer with the optional print server, hard disk, PSmodule, Flash ROM, and additional RAM me

CHAPTER 11 - 103 . Spatial requirementsAllow an appropriate distance from all walls, thus ensuring unobstructed work space. (Figure 1-5-1) If the Prin

4 - 9CHAPTER 4[15] PRINTER DETAILSDisplays the printer ROM DIMM version, version numbers of any istalled options, and the pagecounts.Download Service

CHAPTER 44 - 10II. TROUBLESHOOTING IMAGE FAULTSIf the cause of the symptom is identified as being an ‘image fault’ in reference to the flow chart(Figu

4 - 11CHAPTER 42-2. Dark<Possible Causes>1. The image density setting is not correct.Action: Operate the external device to adjust the image den

CHAPTER 44 - 122-4. Solid black<Possible Causes>1. The contact of the leaf spring for the primary bias and the contact of the cartridge are faul

4 - 13CHAPTER 42-6. Soiled back<Possible Causes>1. The paper is soiled.Action: Replace the paper with paper fresh out of package. At the same ti

CHAPTER 44 - 142-10. White spots<Possible Causes>1. The cartridge is running out of toner.Action: Remove the cartridge from the Printer, and sha

4 - 15CHAPTER 42-13. Fixing faulty.<Possible Causes>1. The setting and the type of paper used do not match.Action: Correct the setting to suit t

CHAPTER 44 - 162-16. Image wobble<Possible Causes>1. The setting and the type of paper used do not match.Action: Correct the setting to suit the

4 - 17CHAPTER 4III. MEASURES AGAINST JAMSThe Printer’s paper path can broadly be divided into the following 5 blocks:[1] [5] [4] [2] [3][1] Multifeede

CHAPTER 44 - 183. The lever of the multifeeder sensor does not move smoothly, or is damaged or deformed.Action: Fit it so that it moves smoothly. If d

1 - 11CHAPTER 1C. Unpacking and InstallingWhen a piece of metal is brought in from a cold to warm place, droplets of water can develop on itssurface.

4 - 19CHAPTER 43. A part in the pickup drive assembly is damaged.Action: Remove the pickup drive assembly, and replace any damaged part.4. The paper f

CHAPTER 44 - 203-5. Fixing/delivery block<Possible Causes>1. The fixing roller does not rotate smoothly.Action: Check the gear for wear or chipp

4 - 21CHAPTER 4IV. FEEDING FAULTSIf the symptom has been identified as a feeding fault according to the flow chart (Figure 4-1-1),identify the locatio

CHAPTER 44 - 224-3. Skew<Possible Causes>1. The paper is not set correctly.Action: Set the paper against the paper guides at the left/right and

4 - 23CHAPTER 4V. MALFUNCTIONSIf the symptom has been identified as a malfunction according to the flow chart (Figure 4-1-1),take the following action

CHAPTER 44 - 245-4. Abnormal noise is heard from the fixing assembly.<Possible Causes>1. The fixing roller gear is not mounted correctly.Action:

4 - 25CHAPTER 4VI. CORRECTING A FAULT STATUS CONDITIONIf the cause has been determined to be a “fault status condition” in relation to the Troubleshoo

CHAPTER 44 - 266-3. ‘E110 CALL FOR SERVICE’ (scanner unit fault)<Possible Causes>1. The connector of the BD signal line has poor contact.Action:

4 - 27CHAPTER 46-7. ‘LOAD <SIZE>IN <TRAYS>’ is indicated although paper of the selected size is insidethe cassette.<Possible Causes>

CHAPTER 44 - 286-10. ‘CASSETTE 1 MISSING’ is indicated in the presence of a cassette.<Possible Causes>1. The paper size detecting switch lever o

CHAPTER 11 - 123 . Unpacking and installing the hard diskNote: Before handling the hard disk, be sure to touch a metal area of the Printer to avoid da

4 - 29CHAPTER 46-13. ‘PAPER JAM’ is indicated in the absence of a jam, and the Printer fails to be ready.<Possible Causes>1. The registration pa

CHAPTER 44 - 306-17. ‘FLASH ERROR’ is indicated after replacing the optional flash ROM.<Possible Causes>1. The video controller PCB is faulty.Ac

4 - 31CHAPTER 4VII. STANDARDS AND ADJUSTMENTSA. Making Mechanical Adjustments1 . Checking the pressure (nip) of the pressure rollerCaution: In the ste

CHAPTER 44 - 32B. Making Electrical Adjustments1 . Adjusting the leading edge marginVR101 (Figure 1-4-2) on the DC controller PCB is adjusted in the f

4 - 33CHAPTER 4C. Copying the Counter ReadingsIf you have replaced the video controller PCB, be sure to perform the following work:Caution: If you are

CHAPTER 44 - 34D. Variable Resistors (VR), Light-Emitting Diodes (LED), Check Pins, Jumpers, and Switchesby PCBOf the VRs, LEDs, check pins, jumpers,

4 - 35CHAPTER 42 . Video controller PCBJ5J10J7RAM DIMMROM DIMMJ9J3J2J812333419112269 172 4J1 69 172 469 172 412625501441431343618A1B1A20B20IC5IC4EEPRO

CHAPTER 44 - 364 . Control panel PCBJ2131412J1101Figure 4-7-75 . Built-in print server (option)4321ONSW1Figure 4-7-8Download Service Manual And Resett

4 - 37CHAPTER 4Table 4-7-2 shows the DIP switch settings.Table 4-7-2ON : set all settings stored on the print server tofactory settings.OFF : use sett

CHAPTER 44 - 38VIII. MAINTENANCE AND INSPECTIONA. Periodically Replaced PartsNote: A periodically replaced part is one that must be replaced at certai

1 - 13CHAPTER 16) Holding the metal cover area [5] of the hard disk, slide in the hard disk along the guide rail.[5]Figure 1-5-47) Secure the top and

4 - 39CHAPTER 42 . Paper FeederTable 4-8-2No.12Part No.FF6-0981-000FB5-8099-000Part nameCassette pickuprollerCassette separationpadQ’ty11Average life8

CHAPTER 44 - 40D. Points to Note for Cleaninga . Cassette Pick Roller, Feeding RollUse lint-free paper and alcohol.b. Manual Feed Pickup RollerUse lin

4 - 41CHAPTER 4E. Standard ToolsYou will need the following standard stools when servicing the Printer:Table 4-8-3No.123456789101112131415161718192021

CHAPTER 44 - 42F. Special ToolsYou need not obtain tools other than those in the standard tools set.G. Solvents and OilsTable 4-8-4CompositionAlcohol,

4 - 43CHAPTER 4IX. ARRANGEMENT OF ELECTRICAL PARTSA. Switches and Sensors• PrinterSW3PI101PI202PI201Pl104PI102PI103SW105SW4SW201Figure 4-9-1• Paper fe

CHAPTER 44 - 44Table 4-9-1Symbol NameSwitchSwitchSwitchSwitchSensorSensorSensorSensorSensorSensorNotationSW3SW4SW105SW201PI101PI102PI103PI104PI201PI20

4 - 45CHAPTER 4B. Clutches, Solenoids, and MotorsM101SL101CL101CL102CL201M201Figure 4-9-2• Paper Feeder• PrinterDownload Service Manual And Resetter P

CHAPTER 44 - 46Table 4-9-2Symbol NameSolenoidClutchClutchClutchMotorMotorNotationSL101CL101CL102CL201M101M201DescriptionMultifeeder pickup solenoidCas

4 - 47CHAPTER 4C. Others• PrinterTH101THSW101H101FM101Figure 4-9-3Table 4-9-3Symbol NameThermistorThermistorThermalswitchFan motorHeaterNotationTH101T

CHAPTER 44 - 48D. PCBs[1][2][3][4][5]Figure 4-9-4• Printer• Paper FeederDownload Service Manual And Resetter Printer at http://printer1.blogspot.com

Use of this manual shouldbe strictly supervised toavoid disclosure of confi-dential information.COPYRIGHT © 2001 CANON INCDownload Service Manual

CHAPTER 11 - 144 . Unpacking and installing the built-in print server (Ether Board EB-65)Caution: If possible, wear a wrist strap designed to prevent

4 - 49CHAPTER 4Table 4-9-4No.12345NameDC controller PCBVideo controller PCBPower supply PCBControl panel PCBPaper feeder controller PCBDescriptionDC l

CHAPTER 44 - 50E. Connectors• PrinterJ902J104J105J1201J5 J107J103J101J913J914J915J912J1202J901J401J6J909J903J906J905J904J916J911J908J907J102J110J109J1

4 - 51CHAPTER 4• Paper feederJ3J153J154J155J6J2J5J4J901/J1507J901/J1507J1Figure 4-9-6Download Service Manual And Resetter Printer at http://printer1.b

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APPENDIXIII. LIST OF SIGNALS ... A-5IV. MESSAGES TABLE ... A-10I. GENERAL TIMING CHART... A-1

A - 1APPENDIXI. GENERAL TIMING CHARTGeneral Timing Chart (1/1)• A4, 2 Sheets, Continuous0.06 0.060.030.030.260.46 0.07 0.170.0912345678910111213141516

APPENDIXA - 2Download Service Manual And Resetter Printer at http://printer1.blogspot.com

A - 3APPENDIXII. GENERAL CIRCUIT DIAGRAMGeneral Circuit Diagram (1/2)65432DCBA1 2 3 4 5 6 7 8 9 101112 131415161718191 2 3 4 5 6 7 8 9 101112 13141516

APPENDIXA - 4General Circuit Diagram (2/2)654321DCBA1234561 2 3 4 5 6 7 8 9 10111234567891011MCL1 2 3 4 5 6 1 2 3 4 5 6 7123456J12J11J10J9J8J7J12J11J1

A - 5APPENDIXIII. LIST OF SIGNALSA. Inputs to and Outputs from the DC Controller PCBI/OInputOutputOutputOutputOutputOutputOutputOutputOutputOutputInpu

1 - 15CHAPTER 16) Slide in the print sever [5] into the expansion board slot 2 along the groove found inside.[5]Figure 1-5-87) Secure the top and bott

APPENDIXA - 6NotationGNDGNDGND/PPRDY/CCRT/SBSY/PCLK/STS/RDY/TOP/CBSY/CCLK/CMD/PRNT/PRFD/CPRDYGNDGNDGND+5V+5V+5VGND/BD/VDOVDON.C.N.C.GNDGNDGNDGNDGNDGND

A - 7APPENDIXConnectorJ105J106Pin131415161718192021222324252627282930313233343512345678910111213141516Notation+24V+24VGNDGND+5V+5VGNDGND+3.3V+3.3V+3.3

APPENDIXA - 8ConnectorJ106J107J108J109J110Pin1718191212312312345NotationRGON+24VCSTFDDOR24VINDOR24VOUT+5VGND/MPSNSJFANDRVGNDFANLOCKPSSN4PSSN3GNDPSSN2P

A - 9APPENDIXB. Inputs to and Outputs from the Paper Feeder Controller PCBConnectorJ1J2J3J4J5Pin123451234561212345678910111234NotationPSSN4PSSN3GNDPSS

APPENDIXA - 10IV. MESSAGES TABLEa. JUST MESSAGEActionThe printer will be ready in a moment.The printer is ready to print.The printer is printing.Press

A - 11APPENDIXb. SERVICE CALL ERRORMessageE000CALL FOR SERVICEE001CALL FOR SERVICEE003CALL FOR SERVICEE011CALL FOR SERVICEE110CALL FOR SERVICEE676CALL

APPENDIXA - 12c . WARNING MESSAGEMessageREADYTONER LOWKEY NOT VALIDMEMORY OVER-FLOWFLASH OVERFLOWMRT COMPRES-SIONDISK ALMOSTFULLDISK FULLREADYJOB LOG

A - 13APPENDIXd. NORMAL ERRORMessageTONER CARTMISSINGLOAD <size>IN <trays>LOAD <size>IN MANUALLOAD CLEANINGPAGE IN MANUALPAPER JAMCH

APPENDIXA - 14MessageFLASH ERRORWRITING DISKERRORREADING DISKERRORMEM ALLOCERRORPARALLEL INTER-FACE ERRORUSBINTERFACE ERRORETHERNETOPTION ERRORJOB STO

A - 15APPENDIXe. The following messages are displayed on the SERVICE mode.MessageNVRAM OKNVRAMx ERRORWRITING NVRAMxERRORCHECK NVRAM+REALLY/-IGNOREx -&

CHAPTER 11 - 1611) Turn on the power switch, and check to make sure that the LNK lamp (green) of the printserver is ON.• In the case of 10Base-T, chec

APPENDIXA - 16f. The following messages are displayed as the HIDDEN function.MessageCOLD RESET A4COLD RESET LTRPANEL CHECKPANEL CHECKDONEMeaningThe pr

Prepared byConsumer Imaging Products Quality Assurance Dept.1Consumer Imaging Products Quality Assurance DivOffice Imaging P

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1 - 17CHAPTER 16 . Points to note when using the printer1. When turning on the power switches, be sure to start with the external devices and then the

CHAPTER 11 - 18D. When Storing or Handling the EP-65 CartridgeThe cartridge is subject to the effects of the environment it is in whether it remains p

1 - 19CHAPTER 1b. After taking out of the package (removing the seal)The photosensitive drum is made of photoconducting material (OPC), and tends to d

CHAPTER 11 - 205. Do not attempt to touch the surface of the photosensitive drum of the cartridge. Further, donot clean the photosensitive drum.DrumFi

1 - 21CHAPTER 1VI. RELOCATING THE PRINTERIf the Printer must be relocated after installation by truck or other means of transportation, takenote of th

CHAPTER 11 - 22VII. ROUTINE MAINTENANCE/INSPECTION BY THE USERTo ensure that the Printer remains in its best condition, advise the user to provide the

1 - 23CHAPTER 17) Press the Go key so that the Printer starts cleaning the fixing roller.Note: Allow about 5 min before the cleaning sheet is delivere

P - 1PREFACEINTRODUCTIONThis Service Manual provides basic facts and figures needed to service the laser beam printer LBP-2000 (hereafter, the Printer

CHAPTER 11 - 244) Open the manual feed tray; while pushing down the holding plate, fit the manual feed cleaningtool in place as shown.Figure 1-7-55) S

1 - 25CHAPTER 1VIII. USING THE PRINTERA. The Operation PanelThe operation panel is used to perform basic printer operations, make printer configuratio

CHAPTER 11 - 26[6] Value key:With an item name displayed, press Value key to step through the item's values. Press Shiftand Value keys to step th

1 - 27CHAPTER 1B. Operation Panel MenusYou can access the following menus though the operation panel:• SHUTDOWN MENU*3• SECURED JOB MENU*1• TEST MENU•

CHAPTER 11 - 283 . Restoring the default settingsTypes of default settings are as follows:Factory default settings are those set for each menu item at

1 - 29CHAPTER 1Press “Go” to take the printer off-line. Press “Menu” to display the following menu.READYPAUSEDSECURED JOB MENUA (user name)B (job na

CHAPTER 11 - 30Download Service Manual And Resetter Printer at http://printer1.blogspot.com

CHAPTER 11 - 31ENGINE MENUCLEAR FUSERERROR=NO*+ RELLAY CLEAR- IGNORE CLEARSHIFT + VALUE(lgnore)VALUE+ FORMAT DISK- IGNORE DISKSHIFT + VALUE(lgnore)VAL

CHAPTER 11 - 32Download Service Manual And Resetter Printer at http://printer1.blogspot.com

CHAPTER 2OUTLINE OF OPERATION1. The roles played by specific functions, the relationship between electrical system and me-chanical system, and the tim

PREFACEP - 2CONTENTSCHAPTER 1 PRODUCT OUTLINECHAPTER 2 OUTLINE OF OPERATIONI. FEATURES... 1 - 1II. SPECIFICAT

2 - 1CHAPTER 2I. BASIC OPERATIONA. Functional ConstructionThe Printer may be broadly divided into five functional blocks: engine control system, laser

CHAPTER 22 - 2B. Sequence of Basic OperationThe sequence of the printer operation is controlled by the microprocessor found on the DC control-ler PCB.

2 - 3CHAPTER 2• Basic Sequence of Operation at Power-OnPower switch ONFixing roller 140˚C*1*1: WAIT End Conditions 25 sec or more passes after the s

CHAPTER 22 - 4• During PrintingTable 2-1-2Purpose RemarksSTBY(standby)printFrom when the primary DC bias goes off to when the main motor stops.To form

2 - 5CHAPTER 2• Basic Sequence of Operation During Printing (from printer cassette, A4)/PRNT inputScanner motor(M102)/SCNRDYPickup clutch(CL101)Regist

CHAPTER 22 - 6C. Power-On SequenceThe following shows the flow of operation from when the power switch is turned on to when thePrinter enters warm-up

2 - 7CHAPTER 2II. ENGINE CONTROL SYSTEMA. Outline of the Electrical Circuitry1. OutlineThe sequence of operation of the Printer is controlled by the C

CHAPTER 22 - 82 . Operation within the blocka. CPUThe CPU is an 8-bit microprocessor. It is a single-chip type, possessing a built-in ROM and RAM;it p

2 - 9CHAPTER 2B. Inputs to and Outputs from the DC Controller1 . Inputs to the DC controllerJ103-4-5+5VDC controller PCBRegistrationpaper sensorPI101J

CHAPTER 22 - 102 . Outputs from the DC controllerDC controller PCBMultifeederpickupsolenoidSL101+24VJ106-14-15MPFDO When ‘H’, SL101 goes ON.Cassettepi

P - 3PREFACECHAPTER 4 TROUBLESHOOTINGAPPENDIXCHAPTER 3 MECHANICAL SYSTEMI. EXTERNALS AND CONTROLS ... 3 - 1A. External Covers...

2 - 11CHAPTER 23 . Inputs to and outputs from the DC controllerDC controller PCBPower supply PCBSW102 Main power switchRodH101Fixing heaterThermal swi

CHAPTER 22 - 12C. Controlling the Fixing Mechanisms1. OutlinePressurerollerStaticeliminating brushStaticeliminating brushSeparationclawsDelivery rolle

2 - 13CHAPTER 22 . Controlling the fixing temperatureThe fixing temperature is controlled in relation to the following:a . paper typeb. power switch a

CHAPTER 22 - 14(2) Controlling to the target temperatureTo ensure good fixing as soon as the power switch is turned on, a target temperature is set in

2 - 15CHAPTER 23 . Fixing heater safety circuitTo prevent malfunction of the fixing heater, the Printer monitors the readings of the main thermis-tor

CHAPTER 22 - 164 . Protective functionsThe printer is equipped with the following protective functions to prevent malfunction of the fixingheater:a. T

2 - 17CHAPTER 25 . Detecting a fault in the fixing assemblyThe CPU will identify a fault in the fixing assembly under any of the following conditions

CHAPTER 22 - 18D. High-Voltage Power Supply Circuit1. OutlineDC controller PCBVideocontroller PCBCPUASICPrimarybias circuitDevelopingbias circuitToner

2 - 19CHAPTER 2• At power-onWAITWMUPRWMUPSTBY1.0 (approx.)0.56 (approx.)1.31.01.6Print startcommand(/PRNT)Main motor(M101)Scanner readysignal(/SCNRDY)

CHAPTER 22 - 202 . Operationa. Primary chargingTB401/TB402Pr/PRACON/PRACFOT/DCPWM/PRDCFOTTo developing bias circuitTo primarycharging rollerDC control

CHAPTER 1PRODUCT OUTLINEI. FEATURES... 1 - 1II. SPECIFICATIONS ... 1 - 2III. SAFETY .

2 - 21CHAPTER 2b. DevelopmentTB403/TB404DvTB405/TB406AntTNRCHKTTNRCHKD/DVACFOT/DCPWM/DVDCFOTTo primary bias circuitTo developingcylinderFrom toner lev

CHAPTER 22 - 22c . Detecting the toner level and the presence/absence of a cartridgeA toner level sensor is mounted inside the cartridge.The Printer c

2 - 23CHAPTER 2E. Low-Voltage Power Supply Circuit1. OutlineLow-voltage powersupply circuitP1CBNF NFHigh-voltagepower supplycircuitASICCPU+3.3V circui

CHAPTER 22 - 24The AC power arriving at the low-voltage power supply circuit on the power supply PCB is con-verted into three power levels (+24 V, +5

2 - 25CHAPTER 2F. Video Interface Control1. OutlineThe following explains the types of interface signals used between the DC controller circuit andthe

CHAPTER 22 - 26b. Video interface signalsVideo controllerPCBDC controllerPCBJ104-10111213141516171819202122303132J5-10111213141516171819202122303132/P

2 - 27CHAPTER 2G. Other Control1 . Controlling the main motorThe following shows the circuit used to control the main motor:DC controller PCBCPUJ106-1

CHAPTER 22 - 282 . Controlling the fan motorThe Printer is equipped with a single fan used to discharge heat from inside the machine. The heatdischarg

2 - 29CHAPTER 2When the power switch is turned on or when sleep state is ended, the fan ON signal (FANON) goesHigh and the fan full-speed rotation sig

CHAPTER 22 - 30III. LASER/SCANNER SYSTEMA. OutlineCylindrical lensScanner motor6-faceted mirrorImaging lensBD PCBNo. 2 reflecting mirrorNo. 1 reflecti

1 - 1CHAPTER 1I. FEATURES1 . High-speed printingAlthough compact in design, the Printer is a high-speed printer capable of generating 20 pages perminu

2 - 31CHAPTER 2B. Laser Control Circuit1. OutlineLogic circuitPower adjustment circuitDrive circuitJ907-8Control amplification circuit/ENBLO/LONO-5/DP

CHAPTER 22 - 322 . Controlling the automatic emission of the laser diodeThe automatic emission mechanism (APC) of the laser diode is controlled by the

2 - 33CHAPTER 24 . Controlling the emission of the laser diodeIn keeping with the paper size information from the CPU, the ASIC generates the image fo

CHAPTER 22 - 34C. Scanner System1 . Controlling the scanner motorThe following is a diagram of the scanner motor control circuit:DC controller PCBBD P

2 - 35CHAPTER 2The CPU monitors the /BDIN signal coming from the BD PCB to find out whether the scannermotor is rotating at a specific speed of rotati

CHAPTER 22 - 362 . Scanner pre-rotationTo ensure that the rotation of the scanner motor stabilizes fast at time of start-up, the machinerotates the sc

2 - 37CHAPTER 2IV. IMAGE FORMATION SYSTEMA. OutlineThe image formation system is the core of the Printer, and consists mainly of a cartridge and afixi

CHAPTER 22 - 38B. Printing ProcessAs shown in the diagram, the principal area of the image formation system is found inside thecartridge:Developing c

2 - 39CHAPTER 2The printing process broadly consists of the following 5 blocks (7 steps):(1) Latent static Image Formation BlockStep 1: primary chargi

CHAPTER 22 - 401 . Latent static image formation blockThis block consists of 2 steps, and is used to form a latent static image on the photosensitived

CHAPTER 11 - 2II. SPECIFICATIONSA. Printer1 . Printer engine1) Type Desktop page printer2) Printing method Electrophotostatic3) Printing speed (Note 1

2 - 41CHAPTER 2Step 2: laser beam exposureLaser beamDark area Light areaFigure 2-4-7When the laser beam is run across the photosensitive drum, the cha

CHAPTER 22 - 42As can be learned from the diagram, the developing assembly consists of a fixed magnet, a devel-oping cylinder that rotates around the

2 - 43CHAPTER 23 . Transfer blockThis block is used to transfer the toner image on the surface of the photosensitive drum to paper.Step 4: transferPap

CHAPTER 22 - 444 . Fixing blockThe toner on the paper from the transfer block is retained on the paper by the work of staticcharges, and can move astr

2 - 45CHAPTER 25 . Drum cleaning blockIn the transfer step, not all toner on the photosensitive drum is transferred to the paper, withsome being left

CHAPTER 22 - 46V. PICKUP/FEEDING SYSTEMA. OutlineThe presence/absence of paper in the multifeeder tray is detected by the multifeeder tray papersensor

2 - 47CHAPTER 2The following diagram shows the arrangement of the rollers and the sensors used in the pickup/feeding system:PI103Delivery rollerPI101P

CHAPTER 22 - 48The following diagram gives an outline of operation:M101CL101CL102SL101Multifeeder pickup solenoid drive signal(MPFDO)Registration clut

2 - 49CHAPTER 2B. Detecting the Paper Size1 . Detecting the size of paper in the cassetteWhen the cassette is set in the Printer, specific switches ar

CHAPTER 22 - 50C. Using the Cassette1. OutlineWhen the video controller sends the /PRNT signal to the Printer, the CPU rotates the main motor(M101); i

1 - 3CHAPTER 112) Noise (published noise Sound power level 67 dB or less (printing)by ISO9296) 57 dB or less (standby)Sound pressure level 53 dB or

2 - 51CHAPTER 2D. Using the Multifeeder1. OutlineThe presence/absence of paper in the multifeeder tray is detected by the multifeeder paper sensor(PI1

CHAPTER 22 - 52• Multifeeder Tray Pickup OperationManual feedpickup rollerManual feedseparation padCamMultifeederpickup solenoidMultifeederpickup clut

2 - 53CHAPTER 2E. Fixing/Delivery AssemblyThe pressure roller and the delivery roller of the fixing assembly are driven by the main motor(M101).The pa

CHAPTER 22 - 54F. Detecting Jams1. OutlineThe following paper sensor are used to monitor the movement of paper inside the Printer:• Registration paper

2 - 55CHAPTER 2• Sequence for a Pickup Delay Jam (cassette)Main motor(M101)Pickup clutch(CL101)Registration papersensor jam checkRegistration papersen

CHAPTER 22 - 56b. Stationary jamA jam will be detected if the registration paper sensor (PI101) detects the absence of paper (trailingedge of the prev

2 - 57CHAPTER 23 . Delivery jamsa. Delivery assembly delay jamA delivery leading edge delay jam or the fixing assembly wrap jam will be identified by

CHAPTER 22 - 58b. Delivery assembly stationary jamA delivery trailing edge delivery jam or a delivery stationary jam is identified by the DC controlle

2 - 59CHAPTER 2VI. VIDEO CONTROL SYSTEMA. Outline of the Electrical Curcuitry1. OutlineThis circuit is designed to receive print data consisting of co

CHAPTER 22 - 60f. EEPROM (IC4, IC5)It possesses 32K bits of memory, and it allows erasing and writing of data. It is used to retain data(various setti