Lexmark Optra E 4026-0XX Service Manual
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Lexmark Optra E 4026-0XX Service Manual

Lexmark printer service manual
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Optra™ E
4026-0XX
• Table of Contents
• Start Diagnostics
• Safety and Notices
• Trademarks
• Index
• Manuals Menu
Lexmark and Optra are trademarks of
Lexmark International, Inc., registered
in the United States and/or other
countries.

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Summary of Contents for Lexmark Optra E 4026-0XX

  • Page 1 Optra™ E 4026-0XX • Table of Contents • Start Diagnostics • Safety and Notices • Trademarks • Index • Manuals Menu Lexmark and Optra are trademarks of Lexmark International, Inc., registered in the United States and/or other countries.
  • Page 2 Comments may be addressed to Lexmark International, Inc., D22A/035-3, 740 New Circle Road NW, Lexington, Kentucky 40550, U.S.A. Lexmark may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you.

  • Page 3: Table Of Contents

    4026-0XX Contents Notices and Safety Information ......vi Laser Notice ........vi Safety Information.
  • Page 4 Diagnostic Tests ........3-3 Printer Diagnostic Test ......3-3 Service Diagnostic Test Page .
  • Page 5 4026-0XX Removal Procedures (continued) Paper Feed Solenoid Removal ....4-12 Paper Feed Input Tray Assembly Removal ..4-12 Paper Lift Plate Assembly Removal .

  • Page 6: Notices And Safety Information

    Notices and Safety Information Laser Notice The printer is certified in the U.S. to conform to the requirements of DHHS 21 CFR Subchapter J for Class I (1) laser products, and elsewhere is certified as a Class I laser product conforming to the requirements of IEC 825.
  • Page 7 4026-0XX Laser product labels are located on the back of the printer and on the printhead. CLASS 1 LASER PRODUCT LASER KLASSE1 NACH IEC825 LUOKAN 1 LASERLAITE APPAREIL A LASER DE CLASSE1 TO IEC 825 Notices and Safety Information...
  • Page 8 4026-0XX viii Service Manual...
  • Page 9 4026-0XX Laser Der Drucker erfüllt gemäß amtlicher Bestätigung der USA die Anforderungen der Bestimmung DHHS (Department of Health and Human Services) 21 CFR Teil J für Laserprodukte der Klasse I (1). In anderen Ländern gilt der Drucker als Laserprodukt der Klasse I, der die Anforderungen der IEC (International Electrotechnical Commission) 825 gemäß...
  • Page 10 4026-0XX Avvertenze sui prodotti laser Questa stampante è certificata negli Stati Uniti per essere conforme ai requisiti del DHHS 21 CFR Sottocapitolo J per i prodotti laser di classe 1 ed è certificata negli altri Paesi come prodotto laser di classe 1 conforme ai requisiti della norma CEI 825.
  • Page 11 Laserinformatie De printer voldoet aan de eisen die gesteld worden aan een laserprodukt van klasse I. Voor de Verenigde Staten zijn deze eisen vastgelegd in DHHS 21 CFR Subchapter J, voor andere landen in IEC 825.
  • Page 12 4026-0XX Lasermeddelelse Printeren er godkendt som et Klasse I-laserprodukt, i overenstemmelse med kravene i IEC 825. Klasse I-laserprodukter betragtes ikke som farlige. Printeren indeholder internt en Klasse IIIB (3b)-laser, der nominelt er en 5 milliwatt galliumarsenid laser, som arbejder på bølgelængdeområdet 770-795 nanometer.
  • Page 13 4026-0XX Laser-notis Denna skrivare är i USA certifierad att motsvara kraven i DHHS 21 CFR, underparagraf J för laserprodukter av Klass I (1). I andra länder uppfyller skrivaren kraven för laserprodukter av Klass I enligt kraven i IEC 825. Laserprodukter i Klass I anses ej hälsovådliga. Skrivaren har en inbyggd laser av Klass IIIb (3b) som består av en laserenhet av gallium-arsenid på...
  • Page 14 4026-0XX Avís sobre el Làser Segons ha estat certificat als Estats Units, aquesta impressora compleix els requisits de DHHS 21 CFR, apartat J, pels productes làser de classe I (1), i segons ha estat certificat en altres llocs, és un producte làser de classe I que compleix els requisits d’IEC 825.
  • Page 15 4026-0XX Japanese Laser Notice Chinese Laser Notice Notices and Safety Information...

  • Page 16: Safety Information

    4026-0XX Korean Laser Notice Safety Information • The maintenance information for this product has been prepared for use by a professional service person and is not intended to be used by others. • There may be an increased risk of electric shock and personal injury during disassembly and servicing of this product.
  • Page 17 4026-0XX • Während des Auseinandernehmens und der Wartung des Geräts besteht ein zusätzliches Risiko eines elektrischen Schlags und körperlicher Verletzung. Das zuständige Fachpersonal sollte entsprechende Vorsichtsmaßnahmen treffen. • Ersatzteile müssen gleiche oder gleichwertige Merkmale wie die Originalteile aufweisen, da nicht immer offensichtlich ist, welche Teile des Geräts Sicherheitsmerkmale aufweisen.
  • Page 18 4026-0XX personales durante el desmontaje y la reparación de la máquina. El personal cualificado debe ser consciente de este peligro y tomar las precauciones necesarias. • Los dispositivos de seguridad de algunas piezas no siempre pueden reconocerse a simple vista. Por lo tanto, los recambios deben poseer características idénticas o equivalentes a las de las piezas originales.

  • Page 19: Ozone Information

    4026-0XX Chinese Safety Information Korean Safety Information Ozone Information This product does not produce measurable amounts of ozone gas. Notices and Safety Information...

  • Page 20: Preface

    This manual is divided into the following chapters: • “General Information” contains a general description of the printer, options, and the maintenance approach used to repair it. General environmental and safety instructions as well as special tools and test equipment are listed in this chapter.

  • Page 21: General Information

    4026-0XX 1. General Information This printer is a letter-quality page printer designed to attach to an IBM Personal Computer or other computers compatible with the IBM Personal Computer (with 386 processor or higher). The printer is available in models 4026-06A, 06C, 06D, and 06J without Flash memory and models 4026-06B and 06F with Flash memory.

  • Page 22: Acronyms

    4026-0XX Acronyms Customer Setup DRAM Dynamic Random Access Memory Electrophotographic Process EPROM Erasable, Programmable Read-Only Memory Electrostatic Discharge Field Replaceable Unit HVPS High Voltage Power Supply LASER Light Amplification by Stimulated Emission of Radiation Liquid Crystal Display Light-Emitting Diode LVPS Low Voltage Power Supply MROM Masked Read Only Memory...

  • Page 23: Diagnostic Information

    The lights on the operator panel can indicate either a user error message or service error message. When a service error occurs the printer stops printing and all operator panel LEDs blink in a continuous pattern, indicating a service error, until the printer is powered off.

  • Page 24: Service Error Codes

    4026-0XX Service Error Codes When a service error occurs the printer stops printing and all operator panel LEDs blink in a continuous pattern, indicating a service error, until the printer is powered off. Press and release the operator panel button to display the service error code.
  • Page 25 4026-0XX Blinking Operator Panel LED Controller Card Failure Optional Memory Error Fan Failure Error ROM Checksum Error Base Memory Error Action Replace Controller board Replace the optional memory SIMM. If this does not correct the problem, replace the controller board. Go to the “Fan Service Check”...
  • Page 26 4026-0XX Blinking Operator Panel LED NVRAM Failure Error ASIC Register Failure Error ASIC SRAM Failure Error Flash Memory Failure Error Font Checksum Failure Error Action Replace Controller board Replace Controller board Replace Controller board Replace the ROM SIMM w/Flash. If this does not correct the problem, replace the controller board.
  • Page 27 4026-0XX Blinking Operator Panel LED Engine Board Communications Failure Error Controller SRAM Failure Error Action Replace the engine board. If this does not correct the problem, replace the controller board. Replace Controller board Diagnostic Information 2-5...

  • Page 28: User Error Message Table

    4026-0XX User Error Message Table When a user error message occurs the printer stops printing and one or two operator panel LEDs are on solid or blinking until the printer is powered off. Locate the printer’s LED Status in the following table and take the indicated action.
  • Page 29 The printer is forced to reduce the resolution of a formatted page to 300 dpi before print- ing, or the printer is unable to maintain the required data transfer rate. Go to the “User Secondary Error Mes- sage Table”...

  • Page 30: User Secondary Error Message Table

    Press and release the operator panel button two times to display the user secondary error LED status. Each press and release action must be performed within a half second. Locate the printer’s LED status in the following table and take the indicated action.
  • Page 31 Press Button on solid Diagnostic Information 2-9 Action Switch from the GL/2 or raster mode to Quick Print Plus mode using the Lexmark driver for Windows, or press the operator panel button to resume printing, or do a front panel reset by...

  • Page 32: Power-On Self Test (Post)

    8. The engine board checks the status of the thermistor. 9. The fuser lamp turns on. Note: The printer may be idle for up to 40 seconds as the fuser warms to operating temperature. Printer idle time is shorter if the fuser is already warm.
  • Page 33 “POST Symptom Table” on page 2-12 and take the appropriate action. If the printer completes all these steps and no error indications are displayed, the printer has successfully completed the POST. If the printer has completed POST without an error and a symptom exists, go to the “Symptom Table”...

  • Page 34: Post Symptom Table

    POST completes except one or more LEDs do not come on. None of the LEDs come on. The printer is dead (No LEDs come on, no motor turns) The fan does not come on. The fuser lamp does not come on.

  • Page 35: Symptom Table

    4026-0XX Symptom Table Locate your symptom in the following table and take the appropriate action Symptom Dead printer Fan not working Fan noisy Fuser parts melted Fuser Lamp doesn’t light Toner not fused to the paper Blank page Black page...
  • Page 36 Paper is not picked or never leaves the optional paper tray (Tray 2) Paper feeds continuously Paper fails to exit printer or stack in output bin Paper skew Toner on the back of the page Poor print quality...

  • Page 37: Service Checks

    4026-0XX Service Checks Charge Brush Service Check Note: The charge brush charges the photoconductor and is located inside the photoconductor unit. Photoconduc- tor Unit Main Drive Motor Gears Charge Brush Bias Contact (right side frame) Photoconduc- tor Unit Ground Con- tact HVPS board Action...

  • Page 38: Cover Interlock Service Check

    If incorrect, replace the LVPS. Be sure the voltage at CN7-1 measures +24 V dc. If incorrect, turn the printer power off and disconnect the LVPS cable from the engine board. Turn the printer power on. The voltage on the LVPS cable pin 1 should measure approxi- mately +24 V dc.

  • Page 39: Exit Sensor Service Check

    Action Turn the printer power off. Disconnect CN11 on the engine board. Turn the printer on and measure the voltage between CN11-1 and CN11-2. The voltage should read approxi- mately +24 V dc. If incorrect, replace the engine board.

  • Page 40: Cold Fuser Service Check

    Line Voltage Fuser Lamp 2-18 Action The voltage to the printer must be within the fol- lowing limits. 100 V ac (90 V ac - 110 V ac) Japan 120 V ac (108 V ac - 132 V ac) U.S.
  • Page 41 Check the fuser thermostat if the fuser lamp does not come on or if it comes on and does not go off. Unplug the printer power cord and check the thermostat to be sure that it opens and closes properly. Replace as necessary.

  • Page 42: Hot Fuser Service Check

    4026-0XX Hot Fuser Service Check Note: If you replace the fuser assembly for overheating, also replace the engine board. CAUTION: FUSER PARTS MAY BE HOT. Fuser Assem- Engine Board Input Sensor Service Check If the paper never leaves the tray or fails to be picked from the tray, go to the “Paper Feed Service Check”...
  • Page 43 4026-0XX Input Sensor Flag Input Sensor Action Check the flag for damage, especially at the front edge, Be sure the flag moves freely. Replace the flag as necessary. Be sure the input sensor is correctly installed and the sensor/solenoid cable is properly con- nected.

  • Page 44: Low Voltage Power Supply Service Check

    CN7-4 (+5 V dc) and CN7-3 (+5 V ground). The reading should measure approximately +5 V dc. If +5 V dc is not present, unplug the printer line cord and check fuse F1. If the fuse is open, replace the fuse. If the fuse is not open, replace the LVPS.
  • Page 45 4026-0XX ROM SIMM and Optional Memory SIMM HVPS Printhead Assembly Thermistor Post Incomplete - ERROR LED remains on solid Note: Be sure the top cover is closed when doing the following checks. LVPS Engine Board Action Reinstall the ROM SIMM. Check for +5 V dc at CN7-4.
  • Page 46 2-24 Action If fuse F1 continues to open after being replaced, disconnect CN7 from the engine board and turn the printer power on. If F1 opens, replace the LVPS. If F1 does not open with CN7 disconnected, check the following:...

  • Page 47: Main Drive Motor Service Check

    4026-0XX Main Drive Motor Service Check Main Drive Motor Left Side Frame Gears Paper Feed Frame Assembly Associated Gears Action Disconnect CN6 from the engine board. Check the motor for shorts between each pin on CN2 and the motor case. If continuity is indicated, replace the motor.
  • Page 48 4026-0XX Motor Noise 2-26 Action Check the motor for proper mounting, tight mounting screws, and gear mesh. If incorrect, repair as necessary. If correct, replace the main drive motor. If the motor continues to make noise after the motor is replaced, replace the engine board.

  • Page 49: Operator Panel Service Check

    4026-0XX Operator Panel Service Check Operator Panel Assem- Action LEDs Be sure the operator panel cable is properly seated in J5 on the controller board. Run POST and check each LED for proper operation. If more than one LED does not light or an indi- vidual LED stays on solid during POST, replace the following FRUs one at a time in the order shown:...

  • Page 50: Optional Paper Tray Two Service Check

    Be sure the second paper tray is selected in the user’s applica- tion and no other application is on the selected port. • Be sure the base printer and tray two connectors are not dam- aged. • Be sure the second paper tray drive gear in the base printer operates correctly.
  • Page 51 4026-0XX Paper Lift Plate Assem- Paper Empty Sensor Flag Paper Empty Sensor Second Paper Tray Solenoid/ Engine Board/Sole- noid Cable/ Tray Two Cable Action Check the lift plate assembly, release button, button spring, release arm and all related hard- ware for proper operation. Be sure the lift plate D-roll pad mounted on the top of the lift plate is not worn, contaminated or missing.
  • Page 52 Repair as necessary. Note: If the problem appears to be with the base printer paper feed frame, go to the Frame Assembly Service Check” on page 2-37 “Paper Feed...
  • Page 53 Be sure the voltage at CN9-8 on the engine board measures approximately 0 V dc. If incor- rect, turn the printer power off and measure the resistance between ground and CN9-8. Be sure the resistance measures 0 ohms. If incorrect, be sure the tray two cable measures continuity.

  • Page 54: Paper Take-Up Solenoid Service Check

    4026-0XX Paper Take-Up Solenoid Service Check Solenoid 2-32 Action Be sure the solenoid/engine board cable is firmly seated in connector CN3 on the engine board. Be sure the solenoid cable is firmly seated in the solenoid/engine board cable connector at the solenoid.
  • Page 55 4026-0XX Engine Board Action Disconnect the solenoid/input sensor cable from CN3 on the engine board. Check the voltage at CN3-5. The voltage should measure approxi- mately +24 V dc. If incorrect, replace the engine board. If the voltage reads approximately +24 V dc, check the voltage at CN3-6 while running a test page.

  • Page 56: Parallel Port Service Check

    Turn the printer power on and run POST. Run a print test page from the host. 5. If the printer still does not print, return J3 to the original position. 6. If the internal print test page prints correctly, the user application and printer driver is set up correctly and the correct printer par- allel bi-directional cable is installed.
  • Page 57 4026-0XX Wrinkled Paper/Envelope/Transparency Paper Paper Path Paper Never Leaves The Tray or Fails To Reach The Input Sensor Note: Remove the Optional Second Paper Tray if installed before performing the following checks. Paper Paper Take- Up Solenoid Paper Frame Assembly D-Roll Assembly Paper Lift...
  • Page 58 4026-0XX Paper Never Reaches The Exit Sensor Input Sensor D-Roll Assembly Paper Feed Frame Assembly Fuser Assem- Paper Jam In The Fuser Assembly Fuser Assem- Exit Sensor Any Jam After The Exit Sensor Fuser Assem- Exit Sensor 2-36 Action Check the input sensor for proper operation. If incorrect, go to the “Input Sensor Service Check”...

  • Page 59: Paper Feed Frame Assembly Service Check

    4026-0XX Paper Feed Exit Shaft/ Roller Assembly Paper Feed Exit Shaft Ground Ter- minal Top Cover Paper Feed Frame Assembly Service Check Paper Frame Assembly Action Check the paper feed exit shaft, rollers, and gear for proper operation. Repair as necessary. Be sure the paper feed exit shaft ground termi- nal is properly installed.

  • Page 60: Print Quality Service Check

    Be sure the toner cartridge is in good condition, works correctly, and is not low on toner. If in doubt, install a new toner cartridge before you proceed. The printer does not have a toner sensor. If the print is light, remove the toner cartridge and gently shake it to evenly distribute the toner.
  • Page 61 4026-0XX Spot or Marks At Same Spot On Every Print Note: Do not expose the photoconductor to light any longer than necessary when you remove the photoconductor unit from the printer. Photoconduc- tor Unit Assembly Fuser Paper Separators Blank Page...
  • Page 62 4026-0XX Cables/Con- nectors HVPS Con- tacts HVPS Cover Printhead Assembly, Engine Board, HVPS White or Black Lines or Bands Note: Poor image development, incorrect charging of the photocon- ductor, incorrect laser exposure, poor image transfer, or poor fusing causes white/black bands or lines. Toner Car- tridge Photoconduc-...
  • Page 63 4026-0XX Transfer Corona Cleaning Fuser Assem- Transfer Assembly Printhead Offset Print Fuser Action Clean the corona wire to remove any toner that has accumulated. Open the top cover and locate the cleaning tool. Unsnap the cleaning tool from its holder. The corona wire is located directly in front of the transfer unit.
  • Page 64 4026-0XX Excessive Background Note: Poor development or poorly charged toner particles causes excessive background. This is more noticeable as the toner car- tridge nears end of life. Toner Car- tridge, Photo- conductor Unit White Spots Transfer Assembly Light Print Photoconduc- tor Unit 2-42 Action...
  • Page 65 4026-0XX Toner Car- tridge Transfer Assembly Toner on backside of printed page Note: Toner on the back of the printed page can be caused by poor fusing, improper development, or incorrect charging. Fuser Assem- Action Replace the toner cartridge if the cartridge is nearing the end of life.

  • Page 66: Registration Service Check

    4026-0XX Registration Service Check Note: Use the Service Test Page to check the registration. Paper Registration Adjustment Transfer Assembly Service Check Note: The transfer assembly left and right transfer bracket springs bias the transfer assembly toward the photoconductor unit. Be sure the transfer assembly is free to move and biased toward the photo- conductor unit.

  • Page 67: Transfer Corona Service Check

    4026-0XX Transfer Corona Service Check Transfer Corona ROM SIMM Service Check ROM SIMM Action Be sure the transfer corona is clean. Clean with the transfer cleaning tool located on the upper fuser cover. Check the high voltage contacts for pitting, con- tamination, or damage.

  • Page 68: Diagnostic Aids

    8. The engine board checks the status of the thermistor. 9. The fuser lamp turns on. Note: The printer may be idle for up to 40 seconds as the fuser warms to operating temperature. Printer idle time is shorter if the fuser is already warm.
  • Page 69 18. The polygon motor (printhead motor) turns off. 19. The Data LED turns off. 20. The Ready LED stays on solid. If the printer completes all these steps and no error indications are displayed, the printer has successfully completed the POST. Diagnostic Aids 3-2...

  • Page 70: Diagnostic Tests

    Read/Write ASIC Register Test Read/Write ASIC SRAM Test Read/Write controller board SRAM Test Perform the following steps to run the Printer Diagnostic Test: 1. Turn the printer off. 2. Open the top cover. 3. Press and hold the operator panel button as you turn on the printer.

  • Page 71: Service Diagnostic Test Page

    10. When the test page has finished printing the Ready LED comes on solid and Data LED goes off. Note: After the diagnostic test page prints, the printer automatically exits the diagnostic mode and returns to the normal mode. Diagnostic Aids 3-4...
  • Page 72 4026-0XX...

  • Page 73: User Mode Print Test Page

    1. Be sure the Ready LED is on solid (printer is in the ready state). 2. Press and release the operator panel button. 3. The Ready and Data LEDs blink continuously.
  • Page 74 4026-0XX...

  • Page 75: Paper Feed Timing

    Single Sheet Printing: When condition two in the following list is detected and there is no paper in the paper path the printer powers down except for the fuser lamp and fan motor. Multi Sheet Printing: When condition two in the following list is detected and paper is in the paper path the printer powers down except for the fan motor.

  • Page 76: Fuser Operation

    (thermostat on models 4026-06C and 06F) and the engine board turns the fuser lamp off. Printer Action When the printer power is turned on the fuser lamp turns on until the hot roll temperature reaches approxi- mately 172 degrees centigrade.

  • Page 77: Configuration Mode

    4. Top Cover Open (Error LED on) is displayed on the operator panel. 5. Double-click the operator panel button. 6. The printer is in the configuration mode. The Ready LED is on solid. The Data, Load Paper, Paper Jam, Error and Press But- ton are off.

  • Page 78: Operator Panel Configuration Mode Button Definition

    4026-0XX Operator Panel Configuration Mode Button Definition Term Brief Button Press Long Button Press Double-Click Button Press 3-11 Description Press the operator panel button no longer than three seconds. Press and hold the operator panel button for more than three seconds.

  • Page 79: Hex Trace

    Hex Trace indication, (Ready LED blinking), showing that the printer remains in the Hex Trace mode. Turn the printer power off or do a front panel reset (long button press) to exit the Hex Trace mode.

  • Page 80: Restoring Factory Defaults

    LEDs off except the Error LED. 7. The configuration mode can be selected by doing a brief but- ton press or closing the top cover which causes the printer to enter either the normal mode or the demo mode.

  • Page 81: Repair Information

    4026-0XX 4. Repair Information WARNING: Read the following before handling electronic parts. Handling ESD-Sensitive Parts Many electronic products use parts that are known to be sensitive to electrostatic discharge (ESD). To prevent damage to ESD-sensitive parts, follow the instructions below in addition to all the usual precautions, such as turning off power before removing logic boards: •...

  • Page 82: Adjustment Procedures

    4026-0XX Adjustment Procedures CAUTION: Be sure to unplug the power cord whenever you are working on the printer with one of the covers removed. Print Registration Adjustment Print the service diagnostic test page after you replace the engine board. Check the position of the bottom left and right registration lines.

  • Page 83: Removal Procedures

    Removal Procedures CAUTION: Be sure to unplug the power cord whenever you are working on the printer with one of the covers removed. Use caution when the photoconductor unit is out of the machine. Do not expose it to light for more than 15 - 20 minutes.

  • Page 84: Board Cage Removal

    4026-0XX Board Cage Removal 1. Remove the controller board. 2. Remove the engine board. 3. Remove the two remaining screws that hold the board cage to the mainframe. 4. Note the way the cables are routed to the engine board before removing the board cage.

  • Page 85: Controller Board Removal

    4026-0XX Top Cover 1. Unplug the power cord from the machine. 2. Remove the toner cartridge and P.C. drum. 3. Remove the left, right, and front covers. 4. Disconnect CN7, CN11, CN2, and CN8 from the engine board. 5. Remove the fuser lamp cable cover. 6.

  • Page 86: D-Roll Removal

    Be careful not to lose the pin. 10. Slide the D-roll shaft slightly toward the left. 11. Remove the D-roll shaft by lifting and pulling the shaft toward the center of the printer. Engine Board Removal 1. Unplug the power cord from the machine.

  • Page 87: Exit Paper Feed Roller Assembly Removal

    4026-0XX Exit Paper Feed Roller Assembly Removal 1. Remove the transfer assembly. 2. Remove the fuser upper and lower frame assemblies. 3. Note the orientation of the notches in the left and right bushings. Reinstall with the notches facing away from the top cover. 4.

  • Page 88: Fuser Lower Frame Assembly Removal

    4026-0XX Fuser Lower Frame Assembly Removal 1. Remove the top cover. 2. Remove the fuser upper frame assembly. 3. Remove the four fuser lower frame assembly mounting screws. 4. Use a screwdriver to unlatch the left end of the fuser cable cover and remove the cover.

  • Page 89: Hvps Board Removal

    4026-0XX HVPS Board Removal 1. Unplug the power cord from the machine. 2. Remove the HVPS cover. 3. Disconnect CN1 from the HVPS board. 4. Disconnect the transfer assembly high voltage connector from T1 on the HVPS board. 5. Disconnect the red transfer assembly wire at TRET on the HVPS board.

  • Page 90: Lvps Removal

    4026-0XX LVPS Removal 1. Remove the top cover. 2. Remove the four screws that secure the back of the rear frame to the LVPS. 3. Remove the two screws that hold the top of the rear frame to the LVPS and remove the rear frame. 4.

  • Page 91: Operator Panel Removal

    4026-0XX Operator Panel Removal 1. Unplug the power cord from the machine. 2. Remove the toner cartridge and P.C. drum. 3. Disconnect the operator panel cable from the controller board. 4. Loosen the front operator panel mounting screw from the board cage.

  • Page 92: Paper Feed Frame Assembly Removal

    8. Disconnect the solenoid cable. 9. Remove the paper feed solenoid. Paper Feed Input Tray Assembly Removal 1. Place the printer on it’s back. 2. Remove the four screws holding the paper feed input tray assembly to the frame. 3. Remove the paper feed input tray assembly.

  • Page 93: Paper Separator Removal

    6. Gently pry the printhead locator tabs from the left and right main frame mounting slots and remove the printhead. Print Media Selection Lever Removal (06C/06F/071) 1. Place the printer on it’s back. 2. Remove the selection lever mounting screw. 3. Remove the print media selection lever.

  • Page 94: Thermal Fuse Removal (06A/06B/06D/06J/070)

    4026-0XX Thermal Fuse Removal (06A/06B/06D/06J/070) 1. Remove the top cover. 2. Remove the fuser upper frame assembly. 3. Remove the two screws mounting the thermal fuse. 4. Remove the thermal fuse. Thermostat Removal (06C/06F/071) 1. Remove the top cover. 2. Remove the fuser upper frame assembly. 3.
  • Page 95 4026-0XX Models 4026-06C, 06F and 071 1. Open the top cover. 2. Remove the transfer cable cover screw and transfer cable cover. 3. Remove the two screws that hold the transfer unit to the rear of the top cover. 4. Unplug the wire to the transfer roll assembly. Pay attention to the wire routing.

  • Page 96: Connector Locations

    4026-0XX 5. Connector Locations Low Voltage Power Supply Connector CN1 Engine Board CN2 Fuser Lamp/ Thermal Fuse Pin No. Signal +24 V dc +5 V dc FUSER LAMP* HEAT N NO CONNECTION HEAT L Connector Locations 5-1...

  • Page 97: High Voltage Power Supply

    4026-0XX High Voltage Power Supply Connector CN1 Engine Board TRET Pin No. Signal HV C HV T* HV SEL 2* HV SEL 1* HV B BIAS MON +24 V dc HV to TRANSFER CORONA CHARGE TRET HV to TRANSFER CORONA HOUSING Connector Locations 5-2...

  • Page 98: Engine Board

    4026-0XX Engine Board CN1A Controller Board Pin No. Signal NO CONNECTION NO CONNECTION NO CONNECTION NO CONNECTION RESET* HSYND* EPRDY* PRRDY* TDD* ETBSY* STS* Connector CN2A Thermistor CN3A Paper Entry Sensor and Paper Take-up Solenoid Pin No. Signal THERMISTOR +5 V dc ANODE (PC1) PC1* NO CONNECTON...
  • Page 99 4026-0XX Connector CN4A HVPS CN5A Laser Diode Drive Board CN6A Main Motor CN7A LVPS CN8A Paper Exit Sen- Signal HV C HV T* HV SEL2* HV SEL1* HV B BIAS MON +24 V dc S SCAN LD APC2 (LDVR2) LD APC1 (LDVR1) L DATA* +5 V dc PHASE A...
  • Page 100 4026-0XX Connector CN9A 2nd Paper Tray (Option) CN10A Polygon Motor CN11A Fan Motor Signal +24 V dc FEED 2* NO CONNECTION +5 V dc P EMP2 PSIZED 2NDBIN* MM/INCH CHECK0* CHECK1* CHECK2* NO CONNECTION +24 V dc +5 V dc POLYGON CONTROL FAN* +24 V dc...
  • Page 101 4026-0XX Connector Locations 5-6...

  • Page 102: Second Paper Tray Sensor Board (Option)

    4026-0XX Second Paper Tray Sensor Board (Option) Connector CN1A Engine Board CN3A Paper Take-up Solenoid - 2nd Paper Tray (Option) Controller Board Connector J5 Operator Panel Pin No. Signal CHECK2* CHECK1* CHECK0* MM/INCH 2NDBIN* PSIZEO P EMP 2 +5 V dc NO CONNECTION FEED2* +24 V dc...
  • Page 103 4026-0XX J4 Engine Board Pin No. Signal NO CONNECTION NO CONNECTION NO CONNECTION NO CONNECTION RESET* RHSYNC* EPRDY* PRRDY* TOD* ETBSY* STS* Connector J3 Pullup Power Pin No. Pin No. Signal +5 V dc +5 V dc JUMPER NO CONNECTION Connector Locations 5-8 Signal CTBSY...
  • Page 104 4026-0XX J2 Parallel Port Pin No. Signal RSTROBE* RACK* RBUSY RPERROR RSELOUT RAUTOFD* Pin No. Signal RINIT* RFAULT* RSELECTIN*...
  • Page 105 4026-0XX Connector Locations 5-10...

  • Page 106: Paper Exit Sensor

    4026-0XX Paper Exit Sensor Connector CN3S Engine Board Paper Entry Sensor Connector CN1S Engine Board Paper Feed Solenoid Connector CN2S Engine Board 5-11 Pin No. Signal ANODE (PC3) PC3* Pin No. Signal PC1* ANODE (PC1) Pin No. Signal +24 V dc FEED1*...

  • Page 107: Parts Catalog

    4026-0XX 6. Parts Catalog How To Use This Parts Catalog • SIMILAR ASSEMBLIES: If two assemblies contain a majority of identical parts, they are broken down on the same list. Common parts are shown by one index number. Parts peculiar to one or the other of the assemblies are listed separately and identified by description.

  • Page 108: Assembly 1: Covers

    4026-0XX Assembly 1: Covers...
  • Page 109 Asm- Part Index Number 69G8341 69G9969 11A7376 69G8301 11A7377 69G8306 11A7378 69G8305 11A7379 69G9990 69G8340 69G8303 1-10 69G8302 1-11 1-12 1-13 69G8396 1-13 69G9981 1-13 11A7458 1-14 69G8342 1-15 69G9690 1-15 11A7443 1-15 69G9690 1-15 11A7759 1-16 69G8344 1-16A 11A7463 1-16A 11A7464 1-17...
  • Page 110 4026-0XX Assembly 1: Covers (continued)
  • Page 111 4026-0XX Asm- Part Index Number 1-18 69G8337 1-19 69G8338 1-20 11A7404 1-21 69G9998 1-21A 11A7403 1-22 69G9999 1-23 69G9971 1-24 69G8336 1-24 11A7465 1-25 69G8304 Units Description Gear, 15T Bushing Terminal, PWB-R to Fuser Frame Terminal, Paper Feed Exit Shaft to Board PWB-R Terminal, Top Cover Ground to PWB-T Board, PWB-R...

  • Page 112: Assembly 2: Frame

    4026-0XX Assembly 2: Frame...
  • Page 113 4026-0XX Asm- Part Index Number 69G9962 11A7381 69G9691 11A7382 69G8345 69G8346 69G8347 2-9A 11A7420 Units Description Motor, Main Drive 06A/06B/06D/06J/070 Motor, Main Drive 06C/06F/071 Left Side Plate Motor Bracket 06A/06B/06D/ 06J/070 Left Side Plate Motor Bracket 06C/06F/071 Screw, Type 1308 PP 69G9974 Screw, Type 3501 PP 69G9974 Screw, Type 3704 PP 69G9974 Screw, Type 3504 PP 69G9974...
  • Page 114 4026-0XX Assembly 2: Frame (continued)
  • Page 115 4026-0XX Asm- Part Index Number 2-10 2-11 2-12 2-13 2-14 2-15 2-16 2-17 2-18 69G8358 2-19 69G8360 2-20 69G8361 2-21 69G8362 2-22 69G8357 2-23 69G8359 2-24 69G9982 2-24A 11A7424 2-24B 11A7425 Units Description Gear, 20/41T PP 69G9989 Gear, 29T PP 69G9989 Gear, 22/57T PP 69G9989 Gear, 44/109T PP 69G9989 Gear, 29/65T PP 69G9989...
  • Page 116 4026-0XX Assembly 2: Frame (continued) 6-10...
  • Page 117 4026-0XX Asm- Part Index Number 2-25 2-26 69G8377 2-27 69G8379 2-28 69G8393 2-29 69G9991 2-30 69G8375 2-31 69G8363 2-31 11A7467 Units Description C-Clip, Type 9107 PP 69G9986 Clutch Cam Assembly Bushing D-Roll Shaft Pin, D-Roll Shaft D-Roll Rubber Foot 06A/06B/06D/06J Rubber Foot 06C/06F Parts Catalog 6-11...

  • Page 118: Assembly 3: Printhead

    4026-0XX Assembly 3: Printhead 6-12...
  • Page 119 4026-0XX Asm- Part Index Number 69G8364 Units Description Printhead Assembly 600 dpi Screw, Type 3504 PP 69G9974 Screw, Type 3519 PP 69G9974 Parts Catalog 6-13...

  • Page 120: Assembly 4: Paper Feed Input Tray

    4026-0XX Assembly 4: Paper Feed Input Tray 6-14...
  • Page 121 4026-0XX Asm- Part Index Number 11A7419 69G8367 69G8394 11A7460 69G8366 69G8365 11A7466 11A7462 Units Description Lift Plate Assembly Pressure Spring Guide Plate, Manual Feed 06A/06B/06D/06J/ Guide Plate, Manual Feed 06C/06F/071 Guide, Movable Paper Screw, Type 3704 PP 69G9974 Screw, Type 3504 PP 69G9974 Paper Feed Input Tray Assembly 06A/06B/06D/06J/070 Paper Feed Input Tray Assembly 06C/06F...

  • Page 122: Assembly 5: Paper Feed Frame

    4026-0XX Assembly 5: Paper Feed Frame 6-16...
  • Page 123 4026-0XX Asm- Part Index Number 69G8368 11A7384 69G8369 69G8371 5-3A 11A7409 69G8372 69G8373 11A7459 11A7442 69G8374 69G8370 5-10 11A7386 5-11 11A7385 5-12 11A7389 5-13 11A7387 5-14 11A7388 5-15 11A7461 Units Description Paper Feed Frame Assembly 06A/06B/06D/ 06J/070 Paper Feed Frame Assembly 06C/06F/071 Gear, 16T Top Paper Feed Sensor, Paper Entry Cable, Input Sensor/Solenoid to Engine Board...

  • Page 124: Assembly 6: Fuser

    4026-0XX Assembly 6: Fuser 6-18...
  • Page 125 4026-0XX Asm- Part Index Number 69G8312 11A7390 11A7455 69G8313 11A7391 69G8328 11A7392 69G8371 6-4A 11A7408 69G8332 11A7423 69G8333 11A7393 6-7A 11A7421 69G8314 6-8A 11A7394 69G8327 11A7395 6-10 6-11 69G8329 6-12 69G9973 6-13 11A7422 6-14 69G8315 6-14 69G8316 6-14 11A7456 6-15 69G9694 6-16 69G9695...
  • Page 126 4026-0XX Assembly 6: Fuser (continued) 6-20...
  • Page 127 4026-0XX Asm- Part Index Number 6-18 69G9978 6-18 11A7397 6-19 6-20 69G8317 6-20 11A7398 6-21 69G8330 6-22 6-23 6-24 69G8325 6-25 69G8326 6-26 69G9979 6-26 11A7399 6-27 69G8318 6-28 6-29 6-30 69G9697 6-31 69G8323 6-32 6-33 6-34 69G9698 6-35 69G8324 6-36 69G9699 6-37...

  • Page 128: Assembly 7: Electronics

    4026-0XX Assembly 7: Electronics 6-22...
  • Page 129 4026-0XX Asm- Part Index Number 69G8380 69G8382 11A7454 1339526 1342536 1339520 1339519 1342534 1339525 1339521 1339524 70G0496 1339517 1339523 1339522 69G8381 69G9976 11A7457 69G9972 69G8356 7-10 69G8383 7-10 11A7400 7-10A 11A7410 7-11 69G8385 Units Description Power Supply, 120 V ac U.S. Power Supply, 220/230 V ac W.T.
  • Page 130 4026-0XX Assembly 7: Electronics (continued) 6-24...
  • Page 131 4026-0XX Asm- Part Index Number 7-15 11A7417 7-12 7-13 11A7406 7-14 7-16 11A7418 7-17 69G9985 7-18 69G8386 7-19 11A7439 7-19 69G8262 7-19A 11A7433 7-20 69G9983 7-20 69G9984 7-20 11A7296 7-20 11A7272 7-20 11A7300 7-21 7-22 69G8384 7-22 11A7451 7-22 11A7762 Units Description Terminal, Rear Frame Ground to Control Card...

  • Page 132: Assembly 8: Transfer Assembly

    4026-0XX Assembly 8: Transfer Assembly 6-26...
  • Page 133 4026-0XX Asm- Part Index Number 69G8307 11A7452 69G8310 69G8311 69G9968 69G9967 69G8308 69G8309 11A7453 8-10 11A7383 Units Description Transfer Assembly 06A/06B/06D/06J/070 Transfer Assembly 06C/06F/071 Right Transfer Frame Guide 06A/06B/06D/06J/ Screw, Type 3704 PP 69G9974 06A/06B/06D/ 06J/070 Spring, Right Transfer Guide 06A/06B/06D/ 06J/070 PP 69G9987 Transfer Corona Assembly 06A/06B/06D/06J/ Spring, Left Transfer Guide 06A/06B/06D/06J/...

  • Page 134: Assembly 9: Option - Second Paper Drawer

    4026-0XX Assembly 9: Option - Second Paper Drawer 6-28...
  • Page 135 4026-0XX Asm- Part Index Number 69G9929 69G9927 9-2A 11A7416 69G9926 69G9937 69G9928 9-6A 11A7428 9-6B 11A7429 69G9933 9-7A 11A7430 69G9938 69G9925 9-10 69G9931 9-11 9-12 69G9930 Units Description Frame, Base Foot, square rubber Foot, round rubber Screw, Type 3704 PP 11A7434 Right Side Cover Lift Plate Assembly Tray, Paper...
  • Page 136 4026-0XX Assembly 9: Option - Second Paper Drawer (continued) 6-30...
  • Page 137 4026-0XX Asm- Part Index Number 9-14 9-15 69G9942 9-16 69G9965 9-17 9-18 9-19 69G8370 9-20 69G9958 9-21 69G9963 9-22 9-23 9-24 69G9943 9-25 69G9945 9-26 9-27 69G9944 9-28 69G9946 9-28A 69G9947 9-28B 9-28C 69G9949 9-28D 11A7414 9-29 69G9955 9-30 69G9991 9-31 69G9957 9-32...
  • Page 138 4026-0XX Assembly 9: Option - Second Paper Drawer (continued) 6-32...
  • Page 139 4026-0XX Asm- Part Index Number 9-37 69G9959 9-38 69G9960 9-39 69G9935 9-40 9-41 69G9934 9-42 69G9940 9-43 69G9939 9-44 11A7427 Units Description Bracket, Sensor Flag Sensor Flag Ground Terminal Screw, Type 3501 PP 11A7434 Sensor/Interface Board Cover, Front. Paper Feed Assembly, complete Guide Plate Parts Catalog 6-33...

  • Page 140: Assembly 10: Options

    4026-0XX Assembly 10: Options Asm- Part Index Number 1364936 1364906 1364907 1368706 6-34 Units Description Memory SIMM, 1MB Memory SIMM, 2MB Memory SIMM, 4MB Serial Adapter...
  • Page 141 69G9988 69G9989 69G9974 11A7436 11A7434 Units Description Parts Packet, C-Clips for printer and Second Paper Drawer Parts Packet, Springs Parts Packet, Fuser Gears Parts Packet, Paper Feed Gears Parts Packet, Screws Parts Packet, Second Paper Drawer Springs Parts Packet, Second Paper Drawer Screws...
  • Page 142 Second Paper Tray Option Controller Board Connectors 6-2, Covers Diagnostic Aids Diagnostic Information Diagnostic Tests 3-12 Hex Trace Printer Diagnostic Test Service Diagnostic Test Page User Mode Print Test Page 6-22, 6-24 Electronics Engine Board Connectors ESD-sensitive Parts 6-6, 6-8,...
  • Page 143 4026-0XX Fuser Lamp Fuser Lower Frame Asm Fuser Paper Separator Fuser Upper Frame Asm HVPS Board HVPS Cover Left Side Plate 4-10 LVPS 4-10 Main Drive Motor Main Drive/Paper Feed Gears 4-10 Manual Paper Feed Plate 4-11 Operator Panel Paper Entry Sensor Paper Entry Sensor Flag Paper Feed Frame Asm Paper Feed Solenoid...

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