Troubleshooting Overview, General Troubleshooting Tips | HP C30

Troubleshooting Overview

Throughout the printer’s life problems occur, such as those indicated when an error code displays on the operator panel, a printer produces poor quality prints, or the printer mal- functions. Use the tools provided in this manual to diagnose and resolve printer problems.

These tools include:

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The Troubleshooting Analysis Guide, which contains troubleshooting procedures called TAGs. TAG 001: Troubleshooting A Printer Problem provides an overview of how to use TAGs.

Cross reference tables, which link error codes, print quality problems, and mechanical malfunctions to specific TAGs.

Print quality samples, which you can use to identify a printing problem and its associ- ated TAGs.

Diagnostics, through which the printer checks itself for a range of problems.

The next several pages review troubleshooting basics and standard procedures followed in every troubleshooting session, including:

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Identifying whether a problem belongs to the printer or host

Isolating protocol converter problems

Running test prints

Reading the error log

Confirming line power

Using TAGs

Power-On Reset

Installing the interlock by-pass tool

Checking continuity

Producing a developed image

Producing a toner patch

Completing a service call

Clearing the error log

General Troubleshooting Tips

When a printer problem arises, swapping out all printer supplies may temporarily mask the problem. This is an unsatisfactory, short-term, and expensive solution to correcting the problem. Dust and other contamination, rather than printer supplies, are more often the causes of problems. Clean consumable connectors, alignment guides, and areas before changing consumables.

Many failures add excess toner to the printer’s engine. When you are advised to de-tone the printer as part of a problem fix, run at least 200 test prints before evaluating whether the problem has been resolved.

Printer and Troubleshooting Overview

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HP C30 manual Troubleshooting Overview, General Troubleshooting Tips

Contents

Cut Sheet Printers Maintenance Manual Models C30 and C30D Trademarks Printing History Conventions Preface Using This Manual Other Manuals Page Contents Viii Print Quality Samples Diagnostic Tests Wiring Diagrams and Electrical Data Removal/Replacement Procedures Xii Options General Printer Maintenance Abbreviations and Acronyms Every-Call Cleaning Procedure Printer Troubleshooting Overview Printing and Troubleshooting Overview Receiving data Theory of Operation Host Duplex Printing Paper Path and Cycle SequenceSimplex Printing Paper Path Error Code Technical Definitions Type Description Error Code Technical DefinitionsPath Paper Fuser OPC Assembly Controller Errors Sensor and Switch Locations Top view Front view Developer right view Developer left view Right side view Top left, duplex tray view Front view Sensor and Switch List Sensor/Switch Name General Troubleshooting Tips Troubleshooting Overview Problem Printer or Host? Protocol Converters Reading the Error Log Confirming Line Power TAG 001 Troubleshooting a Problem Using the Troubleshooting Analysis Guide TAGSample TAG Did only the Ready light come on with no numeric display? Options reviews printer options HCI, HCO information Checking Continuity Standard ProceduresPower-on-reset POR Producing a Toner Patch Installing the Interlock By-pass ToolProducing a Developed Image Producing a Toner Patch on the Photoconductor Unit Completing a Service Call Drive Indication Display Clearing the Error Log TAG Cross- Reference Tables TAG Cross-Reference Tables Printer Error Codes Printer Error Code Meaning Go to TAG Error Code/TAG Cross-Reference PCL Error Codes PCL Error Code Meaning Go to TAG PCL Error Codes PCL Error Code Meaning Go to TAG PCL Failure Error Codes IGS Firmware Error Codes IGS Firmware Error Code MeaningIGS Software Error Codes Code TAG Cross- Reference Tables TAG Cross- Reference Tables 11. Blank Print TAGs Blank Prints Go to TAG Print Quality/TAG Cross-Reference 13. Dark Print TAGs Dark Prints Go to TAG 12. Light Print TAGs Light Prints Go to TAG14. Skewed Path TAGs 15. Misregistration TAGs Misregistered Prints Go to TAG Print Quality/TAG Cross-Reference 19. Output Tray Problem TAGs Output Tray Problems Go to TAG 18. Operator Panel Problems TAGs Go to TAG20. Cassette Problem TAGs Cassette Problems Go to TAG Mechanical Malfunction/TAG Cross-Reference 22. Counter Problem TAGs Counter Problems Go to TAG Print Quality/TAG Cross-Reference Troubleshooting Analysis Guide TAGs Troubleshooting Analysis Guide TAGs Troubleshooting Analysis Guide TAGs Troubleshooting Analysis Guide TAGs Did the power-on-reset end with an error code? TAG 001 Troubleshooting a Problem Did an error code appear while running test prints? Did an error code appear while running the prints?Does an error code appear? Display? Can you identify the problem? Fuser unit may be hot TAG 002 Check & Problem Resolution Have you completed the every-call cleaning procedure? Handle gently to avoid breaking the charger wire Display Indication Are the test prints clean and printing correctly? If 7-0 appears, press Stop immediately. do not Proceed Do the error log entries appear as 0000? TAG 010 Upper Cassette Malfunction Is error code 010 displayed?Is it in good working order? Does the voltage change from 0 Vdc to +12Vdc? Troubleshooting Analysis Guide TAGs E10 Envelope Tray Out of Envelopes Is error code E10 displayed?Does 1-8 appear on the operator panel? Does the voltage change from 0Vdc to +12Vdc? Troubleshooting Analysis Guide TAGs TAG 011 Lower Cassette Malfunction Is error code 011 displayed? Troubleshooting Analysis Guide TAGs Are any of these parts damaged? TAG 012 Upper Cassette Not LatchedIs the upper cassette properly latched? Is there continuity? Is 1-0 displayed?Is a value other than 1-0 displayed? Is there continuity? TAG E12 Envelope Tray or Feeder Not Latched Is 1-0 displayed? Is there continuity? Is the lower cassette properly latched? TAG 013 Lower Cassette Not Latched Install the lower cassette Are all the parts in good working order? Is error code 020 still displayed?TAG 020 Paper Jam/Misfeed in Upper Cassette Area Is the voltage +24 Vdc? Is error code 021 displayed?Does the voltage change from 0 Vdc to +12 Vdc? Does the voltage change from +24 Vdc to 0 Vdc? Is there continuity on all? Is there continuity? TAG 021 Paper Jam/Misfeed in /Lower Cassette Area Is error code 020 displayed? Is there ground? Then turn to TAG 002 Check & Problem Resolution Is there continuity? Is paper wrapped around the heat roller? TAG 022 Paper Jam in the Transfer or Fuser Area Has the problem been resolved? Is error code 022 still displayed?Does the multiple feed problem still exist? Has the fuser unit been replaced recently? Is there continuity on both? Does the paper timing roller shaft turn? Are these parts in good working order? Are they damaged or contaminated with toner?Is there improper registration? Are the parts in good working order? Is the voltage 100 Vac? Does the vacuum transport unit fan hold the paper in place? Is paper stopped or jammed at the output tray? Is error code 023 displayed?TAG 023 Paper Jam in the Output Area Are they in good working order? Is error code 025 still displayed? Is error code 025 displayed?TAG 025 Paper in Input Area Before Printing Is the voltage +12 Vdc? Then turn to TAG 002 Check & Problem Resolution TAG 026 Paper in Output Area Before Printing Is error code 026 displayed? TAG 030 Developer Bias Short/Failure Is error code 030 still displayed?Are the voltages correct? Has the developer unit been replaced recently? Is the voltage +24 Vdc? Check TP3-27 for +24 Vdc TAG 031 Toner Patch Reference Level Too Low Is there continuity? Is the toner patch developed and properly positioned? TAG 032 Toner Patch Too LightHave the photoconductor unit been replaced recently? Do the prints appear light or blank? Are all connectors and wiring connected properly? Is error code 035 displayed? TAG 035 Out of Toner or ADD Toner Indicator OnHas the photoconductor unit been replaced recently? Has the seal has been removed from the toner cartridge? Is there continuity? Is error code 036 displayed? TAG 036 Developer Unit Not Installed Does the photoconductor belt rotate? Is error code 040, 041, or 042 still displayed?TAG 040 Photoconductor Seam Sensor Malfunction Is it in good working order? Is the voltage between +2 to +6 Vdc? Yes Go to TAG 002 Check & Problem Resolution Figure a 12V Has the main charger been replaced recently? Is error code 044 displayed?TAG 044 Main Charger/Transfer Charger Circuit Open Is error code 046 displayed? Is paper jammed inside the transfer charger housing?Is error code 051 displayed? Is error code 050 displayed? Continuity TAG 045 Main Charger Circuit Shorted Is error code 045 displayed?Is error code 045 still displayed? Is there continuity? Is there continuity to ground? TAG 050 Transfer Charger Circuit Shorted Has the problem been resolved? TAG 055 Erase Lamp Malfunction Is error code 055 displayed?Is the value displayed less than 220? Did you measure +12 Vdc? Is there continuity? TAG 070 Fuser Unit Malfunction Is error code 070 or 073 displayed? Is the voltage approximately +5 Vdc? Does the fuser lamp light? Is the voltage at least 100 Vac? Is the resistance between I KΩ and 400 KΩ? Was the voltage at least 100 Vac? Is the resistance approximately 550KΩ? Is there continuity to ground on either? Is error code 071 displayed during power-on-reset?TAG 071 Open Fuser Thermistor Does the lamp turn on before error code 072 is displayed? TAG 072 Fuser Unit Temperature Too High Is there resistance? Is the resistance at least 1K‡WW? Does the output tray move back and forth? TAG 083 Job Offset Mechanism MalfunctionDoes the output tray jog continuously? Is the voltage +12 Vdc? Is the voltage +12 Vdc? Does the error code change from 082 to 081? Is error code 083 displayed?Does the error code change from 081 to 082? TAG 097 +12 Vdc Power Shorted or Sensing Problem Does the printer have an attachment option? Is the voltage +12 Vdc? No Go to #19 in this TAG Yes Continue Is the voltage +12 Vdc? Is there continuity to ground at either? Is there continuity at either? No Go to #39 in this TAG Yes Continue Is the voltage +12 Vdc? Is the voltage at +12 Vdc? Then turn to TAG 002 Check & Problem Resolution Is the voltage -12 Vdc? TAG 098 -12 Vdc Power Shorted Is the voltage at J/P8-8 -12 Vdc? TAG 099 +24 Vdc Power Shorted Is the voltage +24 Vdc? No Go to #21 in this TAG Yes Continue Is the voltage +24 Vdc? Is the voltage +24 Vdc? No Go to #26 in this TAG Yes Continue No Continue Yes Go to #31 in this TAG Is there continuity? 100 Troubleshooting Analysis Guide TAGs Troubleshooting Analysis Guide TAGs 101 TAG 100 PCL Board Interface Malfunction Was an error code displayed during the power-on-reset? Is error 101 displayed on the operator panel TAG 101 IGS Controller Diagnostic Failure TAG 130 Diskette/Disk Drive Malfunction Is error code 451 displayed?Is error code 451 still displayed? Is the voltage +5 Vdc? Is error code 572 displayed?Is error code 573 displayed? Is error code 575 displayed? Is error code 574 displayed?Is error code 576 displayed? Is there continuity on any? Can the printer run test prints? Is error code 130, 131, 133, or 134 displayed?Is there continuity to ground on any? Does this printer contain a hard drive? Was an error code displayed?TAG 200 IGS Internal Communication Malfunction Troubleshooting Analysis Guide TAGs 109 Is error code 121 or 123 displayed? Is error code 201 displayed?Are the connectors or wiring damaged? TAG 201 IGS-PCL Interface Malfunction Replace the IGS board Power-on-reset the printer 606, 600 TAG 405 IGS Bit-Map RAM Malfunction Is the operator panel still blank? TAG 500 +5 Vdc Power Malfunction Check J/P42-1 for +5 Vdc Troubleshooting Analysis Guide TAGs 115 No Go to #20 in this TAG Yes Continue Troubleshooting Analysis Guide TAGs 117 Is the voltage +100 Vac? TAG 600 AC Power Malfunction Does the fuse have continuity? Are the interlock switch actuators working properly?Was the power-on-reset successful? Does the front cover interlock switch have continuity? Troubleshooting Analysis Guide TAGs 121 122 Troubleshooting Analysis Guide TAGs Close the top cover Check P4-5 for continuity to ground 124 Troubleshooting Analysis Guide TAGs Do the status lights stay on continuously? TAG 610 Operator Panel MalfunctionDid you hear the tone after pressing each function key? Is one of the function keys not working properly? 126 Troubleshooting Analysis Guide TAGs Is there an open or short to ground continuity? Wiring Table CLR Paper light may be very dim Does Output Tray Full come on too soon? Is a high capacity output unit installed on the printer?TAG 700 Output Tray Circuit Malfunction Is the output tray full sensor in good working order? Does the display still indicate the incorrect paper size? TAG 702 Paper Size Detection MalfunctionIs the paper size sensing mechanism in good working order? Is the circuit board or mounting damaged or contaminated? Is the circuit board or mounting contaminated or damaged? Is there a wiring problem? Wiring for the Lower Paper Size Sensor Wiring for the Upper Paper Size SensorWiring for the Lower Paper Size Sensor Are all parts in good working order? TAG 703 Upper Cassette MalfunctionIs the upper cassette in good working order? Is the lower cassette in good working order? TAG 704 Lower Cassette Malfunction Paper cassette TAG 705 Multiple Paper Feeding Are the prints wrinkled or damaged? TAG 706 Paper Damaged or WrinkledIs the print on the paper skewed? Is either part damaged, worn, or contaminated? Did the upper paper guide lock into place? TAG 707 Upper Paper Guide Assembly Not Closing Is the counter functioning properly? TAG 750 Counter Malfunction Troubleshooting Analysis Guide TAGs 141 TAG 751 Main Drive Motor Runs Continuously TAG 753 External Communications Malfunction Is there a problem with the connectors or pins? Did the diagnostic test run properly? RTS Does the problem appear while using RS-232C communications? TAG 754 Attachment Option Malfunction Are all voltages correct? Prints With Light Horizontal Bands TAG 800 Prints Blank or With Dark Horizontal Bands Is a developed image on the photoconductor? Are the prints blank without dark bands? Do the LEDs illuminate?Is the coupling damaged? Does the magnetic brush turn? Troubleshooting Analysis Guide TAGs 151 Are they jagged? TAG 801 Prints Light or Light With Carrier Particles Is the developed image on the photoconductor correct? Do both drive couplings rotate freely? Does the coupling turn? Is the voltage correct? Does the voltage change to 0 Vdc?Is a meter with a high voltage probe available? Is the voltage 0 Vdc? Troubleshooting Analysis Guide TAGs 157 TAG 802 Prints With Voids or White Spots Replace the fuser unit Run test prints TAG 803 Prints With Light or White Vertical Streaks Are there vertical streaks on the photoconductor belt image? TAG 804 Prints With Light Horizontal Bands Is the photoconductor belt covered with toner? TAG 805 Black Prints Replace the high voltage unit Run test prints Replace the IGS board Run test prints TAG 806 Prints with Dark Spots or Scratches Cleaner unit Are these mechanisms in good working order? Does the paper have any problems? TAG 807 Misregistered/Skewed Prints Simplex Is the problem with the upper cassette? Is the problem with the lower cassette? Is the problem also with the lower cassette?Are these parts clean and in good working order? PCL Board Switch Settings DIP Switches Number Is misregistration the symptom of the problem?Did resetting the switches resolve the problem? Troubleshooting Analysis Guide TAGs 171 TAG 808 Prints Overtoned/Dark Vertical Streaks Does the coupling turn continuously? Is it connected properly? Is there continuity at each? Troubleshooting Analysis Guide TAGs 175 Repair or replace the PCL board Run test prints TAG 809 Blurred or Smeared Vertical Streaks on Prints Is the vacuum transport unit in good working order? Does the vacuum fan hold the paper? Troubleshooting Analysis Guide TAGs 179 TAG 810 Uneven Density or Dark Areas on Prints Troubleshooting Analysis Guide TAGs 181 TAG 811 Background/Residual Images/Dark Prints Are all the erase lamps on? 184 Troubleshooting Analysis Guide TAGs Is the voltage 0.5 Vdc? Are any of the values out of specification? 186 Troubleshooting Analysis Guide TAGs Connectors or wiring AC power supply unit PCL board TAG 812 Uneven or No Fusing on Prints Does the lamp light within 1.5 minutes? Is the paper within specification? Is the belt attached? TAG 813 Residual Images on Prints 190 Troubleshooting Analysis Guide TAGs TAG 815 Prints Resulting From Printhead Malfunctions TAG 900 Top Cover Interlock Malfunction, Duplex Is error code 090 displayed? Troubleshooting Analysis Guide TAGs 193 TAG 901 Misregistration/Skewed Prints Duplex Did the test indicate an error code? 196 Troubleshooting Analysis Guide TAGs Troubleshooting Analysis Guide TAGs 197 Is the duplex paper path sensor in good working order? TAG 902 Paper Jam in Duplex Area Is the a roller clutch in good working order? Is the C roller solenoid in good working order? Is the input solenoid in good working order? Is the feed motor in good working order? Turn the printer on Check J/P306-3 to J/P306-4 for +5 Vdc Print Quality Samples Print Quality Samples Print Quality Samples Good Quality Print Sample 1 Good Quality Print Washout Sample 2 Washout Blank Print Sample 3 Blank Print Light Print Sample 4 Light Print Light Print With Background Sample 5 Light Print With Background Voids of White Spots Sample 6 Voids or White Spots Light Vertical Streaks Sample 7 Light Vertical Streaks Blank Vertical Bands Sample 8 Blank Vertical Bands Light Horizontal Bands Sample 9 Light Horizontal Bands 10.Black or Dark Print Sample 10 Black or Dark Print 11.Dark Specks, Lines, or Areas Sample 11 Dark Specks, Lines, or Areas 12.Dark Vertical Lines Sample 12 Dark Vertical Lines 13. Skewed prints Sample 13 Skewed Prints 14.Misregistration Sample 14 Misregistration 15.Overtoned Print Sample 15 Overtoned Print 16.Blurred Images or Characters Sample 16 Blurred Images or Characters 17.Varying Print Density Sample 17 Varying Print Density 18. Background Sample 18 Background 19.Residual Images Sample 19 Residual Images 20. Wrinkles Sample 20 Wrinkles 21.Fusing Problems Sample 21 Fusing Problems Diagnostic Tests 001 How to Run Diagnostics Diagnostic Tests Paper Size Codes Display Indication Operator Panel TestUpper Cassette Test Intentionally excluded Lower Cassette Test Sensor Test Displays Sensor Description Sensor Test Sequence Clutch Test Displays Indication Paper Transport Clutch Test SequenceCounter Test Photoconductor Test Jogging Motor Test Error Displays IndicationJogging Motor Test Toner Supply Motor Test Toner Supply Motor Test Error Displays Indication Main Charger Test Displays Indication Main Charger Test Error Displays IndicationMain Charger Test Transfer Charger Test Displays Indication 10. Transfer Charger Test Error Displays IndicationTransfer Charger Test Erase Lamp Test 11. Erase Lamp Test Error Displays Indication 12. Negative Developer Bias Test Displays Indication 13. Negative Developer Bias Test Error Displays IndicationNegative Developer Bias Test 14. Duplex Motor Feed Test Displays Indication 15. Duplex Motor Feed Test Error Displays IndicationDuplex Feed Motor Test 16. Duplex Input Sensor Test Displays Sensor Description 17. Duplex Input Sensor Test Error Displays IndicationDuplex Input Sensor Test Sequence 18. Duplex Clutch Test Displays Indication 19. Duplex Clutch Test Error Displays IndicationDuplex Clutch Test Sequence Duplex Tray Paper-Guide Motor Test High-Capacity Output Unit Test Envelope Fuser Solenoid Test High-Capacity Input Unit Test22. High-Capacity Input Unit Test Displays Indication 23. Envelope Fuser Solenoid Test Displays Indication EIGS/MIGS Board Test Continuous Loop EIGS/MIGS Board Test Communication Loop-back Test Single Loop Eigs Program RAM Test Continuous Loop Communication Loop-back Test Continuous Loop EIGS/MIGS Bit Map Test Continuous Loop EIGS/MIGS Bit Map Test Single Loop LED Printhead Test Format Disk/Clear Error Log26. LED Printhead Test Error Displays Indication 27. Disk Drive Test Drive Indications Display Disk Drive Test Single Loop With Stop on Error Disk Drive Test Continuous Loop Wiring Diagrams and Electrical Data Wiring Diagrams and Electrical Data Connector J/P Index Wiring Diagrams and Electrical Data Wiring Diagrams and Electrical Data Connector Schematic Location Connector J/P Index Simplex/duplex A4 Connectors Inside the Front Cover Connector Locations Connectors Inside the Left Cover Connectors on the Duplex Cover Connectors Inside the Right Cover Connectors Inside the Top Cover Connectors on the Back Cover Jogging Motor Control Board Connectors Inside the Back Cover J/P2-14Signal Interface Board Connectors Inside the Back Cover J/P18-62 Connectors Inside the Back Cover J/P 330 Simplex -12 Vdc Circuits Voltage Isolation Diagrams Simplex +12 Vdc Circuits Simplex +24 Vdc Circuits Duplex +5 Vdc Circuit Duplex +12 Vdc Circuits Ground System RS-232C Host Interface RS-232C DCE to DTE Signal Definitions Pin FunctionHost Interface Reference Special Considerations for RS-232 Host Interface Users Standard DCE to DTE Signal Definition Host PrinterStandard DCE to DTE RS-232C Cable DTE Host to Printer Option IBM PC/AT to Printer IBM PC/XT to Printer RS-422 Host interface RS-422 Host Interface Connector Wiring PrinterMacintosh Communication Port to Printer Centronics Parallel Host Interface Centronics Parallel Signal Definitions Pin Function Name IBM Parallel to Printer 10. IBM Parallel to Printer Connector Wiring Host Signal Mode PRN,,P Signal Interface Board Settings Circuit Board Settings Printhead Circuit Board Settings PCL Board Settings Wiring Diagrams and Electrical Data Removal/Replacement Procedures Vacuum Transport Unit Removal Simplex 100 Removal Power ConsiderationsBefore You Begin Photoconductor Removal Front Cover Removal Back Cover Removal Lower Back Cover Removal Left Side Cover Removal Replacement Note Right Side Cover Removal Simplex Service kit is attached inside the right side cover Right Side Cover Removal Duplex Back Detail Vacuum Transport Unit Removal Simplex Vacuum Transport Detail Spring Detail Vacuum Transport Unit Removal Duplex Top Cover Removal Support Assembly Detail Support Detail Top Cover Support Removal Hinge Detail Top Cover Hinge Removal Mounting Screw Detail Rear Duplex Cover Removal Gas Spring Detail Front DuplexCover Removal Operator Panel Removal Counter Removal IGS Board Removal PCL Board Removal Printhead Assembly Removal Front Detail Mounting Screws Disk Drive Housing Removal Cooling Fan Detail Cooling Fan Removal Duplex Fan Removal Toner Motor Detail Toner Motor Removal AC Power Supply Removal AC Power Supply Removal Right Side Detail Back Detail DC Power Supply Removal High Voltage Unit Removal PhotoconductorSeam Sensor Removal Front Detail Photoconductor Rear Guide Rail Removal Spring Signal Interface Board Removal Power Control Board Detail Power Control Board Removal Jogging Motor Control Board Removal Jogging Motor Power Control Board Detail Upper Paper Size Sensor Detail Upper or LowerPaper Size Sensor Removal Upper Cassette Mount Removal Upper Cassette Mount Removal Upper Cassette Mount Removal Front Mounting Screw Detail Back Mounting Screw Detail Cassette Mount Detail Left Side Detail Lower Cassette Mount Removal Lower Cassette Mount Removal Tray Lower Bracket Lower Cassette Mount Upper Paper Guide Removal Springs Cassette Release Cover Upper Paper Guide Roller Removal Lower Paper Guide Removal Paper Timing Guide Removal Paper Feed Drive Cover Mounting Screw CN58 Cleaner Drive Belt Detail Cleaner Drive Belt Removal Cleaner Drive Detail Cleaner Drive Removal Fuser Drive Belt Removal Fuser Drive Detail Fuser Drive Removal Paper Feed Drive Belt Detail Paper Feed Drive Belt Removal Paper Timing Roller Removal Replacement Notes Front Detail Cassette Release Cover Upper Feed Roller Removal Lower Feed Roller Removal Upper Pick-Up Roller Removal Upper Pick-up Roller Drive Detail Upper Pick-Up Roller Drive Removal Lower Pick-Up Roller Removal Lower Pick-up Roller Drive Detail Lower Pick-Up Roller Drive Removal Job Offset Assembly Removal Right Side Detail Back Detail Exit Pinch Roller Removal Mounting Screw Fuser Drive Cover Upper Static Brush Detail Upper Static Brush Removal Lower Static Brush Removal Exit Roller Assembly Removal Back Detail Exit Cover Removal Simplex Mounting Screws Fuser Drive Cover Exit Cover Removal Duplex Exit Cover Removal Duplex Paper Exit Sensor Detail Paper Exit Sensor Removal Paper Full Sensor Detail Paper Full Sensor Removal Front Cover Interlock Switch Detail Front Cover Interlock Switch Removal Back Cover Interlock Switch Detail Back Cover Interlock Switch Removal Top Cover Interlock Switch Detail Top Cover Interlock Switch Removal Erase Lamp Removal EP Cover Removal Replacement Note Main Motor Removal Main Motor Detail Main Gear Drive Detail Fuser Drive Cover Main Gear Drive Removal Duplex Control Board #1 Detail Duplex Control Board #1 Removal Duplex Control Board #2 Removal Registration Motor Detail Duplex Tray Registration Motor Removal Duplex Skew Correction Cable Removal Skew Correction Cable Detail Side Detail Upper Duplex Drive/Clutch Assembly Removal Duplex Route Motor/Solenoid Detail Duplex Route Motor/Solenoid Assembly Removal Roller Removal Roller Removal Upper Duplex Roller Cover Clip and Bearing Roller Solenoid Detail Roller Solenoid Removal Duplex Route Separator Removal Clip Location Paper Path Sensor Underside Detail Duplex Paper Path Sensor Removal Options Options Introduction Sheet/2500-Sheet Component Acronyms Sheet/2500-Sheet Feeder Bench Test Procedure Bench Test Procedure Slope Assembly Prefeed Adjustment Prefeed Adjustment Procedure Input Control Board Logic Connection Diagram for 1200-Sheet/2500-Sheet Feeder Sheet Stacker Component Acronyms Sheet Stacker 1400-Sheet Stacker Bench Test Preparation Options Connector Locations front view, cover removed Connector Locations Rear Side View cover removed Stacker Actions and Sensor Inputs Output Control Board Logic 11.Connection Diagram for the 1400-Sheet Stacker Options General Printer Maintenance General Printer Maintenance General Printer Maintenance Introduction End User Cleaning Kit Tool Requirements Service KitPrinter/Maintenance Record Tools/Supplies History LOG Clean Internal Areas Every-Call Cleaning ProcedureClean the Fuser Unit Remove Major Consumable Supplies Clean the Cleaner Unit/Main Charger Clean the Developer UnitClean the Photoconductor Unit Area Clean the Transfer Charger Printers With Paper Tension Levers Adjusting Paper Feed Tension Removing the Cassette Release Cover Printers With Pick Pressure Adjusters Paper Pick Pressure Adjusters Lubrication Procedure Front View Lubrication Points Duplex Front View Lubrication Symbol Part Lubricant All Printers Front View Lubrication Symbol Part LubricantFront View Lubrication Tables Duplex Only Rear View Lubrication Rear View Lubrication Tables All Printers Rear View Lubrication Symbol Part LubricantDuplex Only Rear Lubrication Symbol Part Lubricant Duplex pinch rollers Drive gears Molycote Tray shaft Red grease Tune-Up Maintenance Procedure Tune-Up Kit Components Introduction Appendix a Abbreviations and Acronyms PC . . . . . . . . . . . .Photoconductor Index Index-2 Index-3 Index-4 Index-5 Index-6 Index-7