Page 1 C910 Color Printer 5055-01X • Table of Contents • Start Diagnostics • Safety and Notices • Trademarks • Index • Manuals Menu Lexmark and Lexmark with diamond design are trademarks of Lexmark International, Inc., registered in the United States and/or other countries.
Page 2 You can purchase additional copies of publications related to this product by calling 1-800-553-9727. In other countries, contact your point of purchase. Lexmark and Lexmark with diamond design and OptraImage are trademarks of Lexmark International, Inc., registered in the United States and/or other countries.
Page 3: Table Of Contents
5055-01x Contents Safety Information........ix Safety Notice .
Page 4 Printer Messages ........
Page 5 5055-01x Repair Information ........4-1 Service Precautions .
Page 6 Sensor Cleaner Removal ......4-36 Printer Controller Removal ......4-37 High Voltage Power Supply Board (HVU) Removal .
Page 7 Major Parts Diagram ........5-2 Printer Controller Board ....... . 5-4 Printhead Controller Board.
Page 8 5055-01x Parts Catalog ......... .7-1 How to Use This Parts Catalog .
Page 9: Safety Information
This product is designed, tested and approved to meet strict global safety standards with the use of specific Lexmark components. The safety features of some parts may not always be obvious. Lexmark is not responsible for the use of other replacement parts. •...
Page 10 Lexmark specifici. Le caratteristiche di sicurezza di alcune parti non sempre sono di immediata comprensione. Lexmark non è responsabile per l’utilizzo di parti di ricambio di altri produttori. •...
Page 11 Lexmark. As funções de segurança de alguns dos componentes podem não ser sempre óbvias. A Lexmark não é responsável pela utilização de outros componentes de substituição. • As informações de segurança relativas a este produto destinam-se a profissionais destes serviços e não devem ser...
Page 12 Lexmark. Les característiques de seguretat d'algunes peces pot ser que no sempre siguin òbvies. Lexmark no es responsabilitza de l'us d'altres peces de recanvi. • La informació pel manteniment d’aquest producte està...
Page 13 5055-01x xiii Safety Information...
Page 14 5055-01x Service Manual...
Page 15: General Information
• Be sure the printer is on a single, flat, strong table or desk top. • Inspect all supplies (OCR, Cartridges, photodeveloper/toner cartridges, belts, fuser CRUs) and paper sources (cassettes,...
Page 16: Return Parts
Recommendations For Service Before leaving the printer check the following: • Be sure printer is on a single, flat, strong tabletop. This is very important for color printers that use belts. Check and set registration as necessary. •...
Page 17: Serial Number
5055-01x Serial Number Open the front door, the serial number is located as shown. The serial number is also on the menu settings page you can print from the Tests Menu. General Information...
Page 18: Abbreviations
5055-01x Abbreviations ASIC Application-Specific Integrated Circuit Customer Setup DRAM Dynamic Random Access Memory EPROM Erasable Programmable Read-Only Memory Electrophotographic Process Electrostatic Discharge Field Replaceable Unit HVPS High Voltage Power Supply Local Area Network LASER Light Amplification by Stimulated Emission of Radiation Liquid Crystal Display Light-Emitting Diode...
Page 19: Processes And Configuration
5055-01x Processes and Configuration In this printer, the toner of four colors (magenta, cyan, yellow and black) melts and deposits on paper, dots which record color image information. This printing process is called the electrophotography process. Electrophotography Process In the electrophotography process, electrically charged toner, exposes, develops, transfers, and is cleaned with an aluminum photosensitive drum.
Page 20: Development Unit
5055-01x Development Unit Toner forms the electrostatic image on the photosensitive drum during exposure. The single component, non-magnetic toner and the lusterless color toner are weather-resistant, and fade little under ultraviolet rays. This is helpful in saving documents. Toner in the hopper is agitated and supplied to the development roll by the supply roll.
Page 21: Cleaning Unit
5055-01x Cleaning Unit Toner remaining on the photosensitive drum following transfer, is scraped away with the cleaning blade, and collected in the recovery bag as waste toner. Residual toner on the photosensitive medium is removed by the eraser. Paper Feeding / Fusing The main unit drive is composed of drives 1 and 2.
Page 22: Drive System
/ toner cartridge, fusing unit, and face-up delivery unit. The motor rotates by the ON signal from the printer controller/ motor drive unit and sends a rotation synchronization detection signal to the motor drive unit.
Page 23: Paper Feeding
(3,000 sheets) may be used. Combining the multi-paper feeder, expansion paper feeders, and high capacity paper feeding system the printer has a maximum paper supply of up to 5,850 sheets. Cassette Paper Feeder The paper feeding solenoid turns on by the signal from the printer controller.
Page 24: Multi-Purpose Feeding
5055-01x Multi-Purpose Feeding The multi-paper feed solenoid turns on by the signal from the printer controller. The multi-purpose feed roll interconnected with the drive 1 through the spring clutch, rotates and picks the paper in the multi- purpose feeder. 1-10...
Page 25: Registration Unit
5055-01x Registration Unit Media temporarily stops (registration) when adjusting the paper leading edge parallel with that of the image, or when adjusting the timing with the black image. The upper and lower registration rolls are arranged in parallel with the photosensitive drum for black imaging. The lower registration roll incorporates a registration clutch which feeds or stops the paper.
Page 26: Separation Unit
5055-01x Separation Unit The transfer belt and paper are separated with the belt drive roll by separation fingers. 1-12 Service Manual...
Page 27: Fuser Unit
Each thermistor sends the surface temperature of the roller to the printer controller. The printer controller turns the heater on or off according to the voltage of each thermistor. If the controller fails and...
Page 28: Delivery
The paper from the fuser pulls down the sensing lever turning on the delivery sensor (photo interrupter). If the delivery unit remains on longer than specified, the printer controller determines that the printer is jammed, and the paper delivery flap lever switches to either face-down or face-up. 1-14...
Page 29: Belt Unit
5055-01x Belt Unit After passing through the registration unit, paper is electrostatically fed by the transfer belt through the positively charged feed roll at the inlet of the belt unit and fed by the running belt. The belt runs at the same speed as the photosensitive drum causing the image on the C, M, Y and K developer to transfer to paper.
Page 30: Belt Up/Down
5055-01x Belt Up/Down In monochrome printing, switching to color printing is not required. To avoid unnecessary wear of the photosensitive drum by the cleaning blade, this operation is stopped with the electromagnetic clutch in drive 1. The transfer belt is lowered so as not to touch the photosensitive drum during color printing.
Page 31: Duplex Unit
Paper fed with the duplex unit stops once, and the center position is corrected by the operation of the side guide plate. Paper is then re- fed by the printer controller signal to the main unit, and, following printing on the back side, is delivered to the normal feeding path.
Page 32: Printing Mode
5055-01x Printing Mode Usually printing is performed in normal mode, OHP mode, thick paper mode, and envelope/postcard mode. The mode is switched by a command from the interface controller. Mode Normal Thick paper Envelope/postcard OHP Mode OHP mode is used for improving color printing on transparencies. With an overhead projector (OHP), light transmitted through OHP paper (original document) projects an image on the lens.
Page 33: Envelope / Postcard Mode
To resolve the paper jam messages, you must clear the jammed area and then press Go to clear the message and resume printing. The printer prints a new copy of the page that jammed if Jam Recovery is set to On or Auto; however, the Auto setting does not guarantee the page will print.
Page 34: Clearing Paper Jams
200 Paper Jam <x> Pages Jammed and Check Areas A-F. If there is a paper jam when you turn the printer on, the second line of the 200 Paper Jam message will be blank. To resolve the message, you must clear all paper from the paper path.
Page 35 If you are printing on small paper, the following steps may not clear the jam. See Paper From the Duplex Unit” on page 1. Open the duplex jam access door on the right side of the printer. 2. Remove the jam. 3. Press Go.
Page 36 When printing on both sides of A5 or other small size paper, you may need to partially remove the duplex unit to clear the jam. 1. Turn off the printer. 2. Open the duplex unit door. 3. Loosen the two screws.
Page 37 5055-01x Check Area F 1. Pull the high capacity feeder away from the printer. 2. Open the jam access door on the top optional drawer. 3. Remove any jams. 4. Close the jam access door. 5. Slide the high capacity feeder until the feeder locks to the docking frame.
Page 38 5055-01x 249 Paper Jam Check Tray <x> A 249 Paper Jam Check Tray <x> message indicates a jam has occurred in the high capacity feeder. 1. Open the top cover. 2. Remove the jam. 3. Close the top cover. 4. Press Go. 1-24 Service Manual...
Page 39: High Capacity Paper Feeder (Hcpf)
5055-01x High Capacity Paper Feeder (HCPF) Paper Feed and Separation Mechanism The high capacity paper feeder consists of a tray and paper transfer. The paper feed and separation mechanism uses a friction roller separation and paper feed system with a non-contact magnet type maintenance-free torque limiter.
Page 40 5055-01x Registration Operation When the paper feed motor rotates, the transfer roller is driven with relay gears. The reverse roller shaft rotates the gears on the paper feed clutch in the direction of the arrow and stops by the friction force of the paper feed roller.
Page 41 5055-01x Tray Up/Down Mechanism The driving force of the tray motor transmits to the tray driving pulley through the gears. Moving the tray moves up and down through the tray driving belt. After the paper loads, and the top cover is set, the pickup solenoid turns on to lower the call roller.
Page 42 5055-01x When the down button is pressed, the tray motor reverses to move the tray down. During the down motion of the tray, as the top surface of paper passes the paper level sensor, the tray motor stops. The tray moves down by about 500 sheets. The down sensor detects the tray lower limit position.
Page 43 5055-01x Tray Up Condition Tray up motion stops when the: • Up sensor is OFF (not shielded) • Power cord is connected and the joint SW is ON • Up sensor is ON (shielded) during printing • Top cover is closed, or when up sensor is ON Tray Down Condition Tray down motion stops when the: •...
Page 44 5055-01x Size Detection Mechanism The paper size can be switched between A4 and letter (11 inches) by changing the side fence position. The paper size sensor 2 detects the fixing screw 2 at the A4 position. The paper size sensor 1 detects the fixing screw 1 at the letter position.
Page 45 5055-01x Residual Paper Detection Mechanism The residual paper quantity in the tray is detected with four photo interrupters. The quantity of pages remaining in the sheet feeder, displays in the following increments: • Near end, about 80 sheets • About 300 sheets •...
Page 46 5055-01x Paper End Detection A reflection type sensor is provided on the top stay to detect the paper top surface and the paper end. 1-32 Service Manual...
Page 47: Maintenance Mode
Function switching and initial setting of the standard machine or optional machine. Function Switch Switch • Maintenance switch (test mode selection) is valid without connecting to the printer controller board. Function Switch Switch Maintenance Switch Maintenance Switch Description 1 Standard machine...
Page 48 • Test paper feed operation. 1. Turn on the docking safety switch with a non-metallic object. The interface cable with the printer controller board need not be connected. 2. Close the top cover or manually activate the cover switch. 3. Load paper.
Page 49: High Capacity Paper Feed Sensor / Switch Test
5055-01x High Capacity Paper Feed Sensor / Switch Test The condition of each sensor can be checked from the lighting of LEDs on the high capacity paper feed board. When each sensor operates with the power supplied, the associated LED lights. To perform the test: Interrupt the photointerrupter sensor signal or actuate the micro- switch being tested while observing the associated LED on the high...
Page 50 5055-01x 1-36 Service Manual...
Page 51: Diagnostic Information
2-4, the or the “Symptom Table” on page 2-52 action. If an error message appears while you are working on the printer, go to the error message table and take the indicated action. Adjustments and Procedures Following Parts Replacement Note: When trouble shooting, or prior to making any adjustment to print quality, always be sure: •...
Page 52 Transfer Belt If you replace the transfer belt, check the printer alignment (X, Y, and Theta), adjusted in diagnostic mode. LED Printhead Controller Board or LED Printhead...
Page 53: Start
Avoid sites exposed to direct sunlight. Print Paper Checks • Be sure to use the recommended paper for this printer. • Check the paper for dampness. Make a trial print with paper from a newly opened package, and check the result.
Page 54: Printer Messages
Service messages indicate a problem that requires a service technician. Status messages provide information about the current state of the printer, requiring no action. Attendance messages alert the operator to printer problems that require operator intervention.
Page 55: Paper Exit Motor Error
5055-01x 911 - Paper Exit Motor Error Questions / Step Actions Is connector CN4 on the printer controller board securely connected? Did replacement of the paper exit motor solve the problem? 912 - High Capacity Paper Feed Motor Error Questions /...
Page 56: Rip Fan Error
Questions / Actions Is +24 V present between pins 1 and 3 on connectors CN17 (upper left fan) and CN5 (upper right fan) on the printer controller board? 919 - Power Supply Fan Error Step Questions / Actions Is +24 V present between...
Page 57: Upper Fuser Thermistor Open Error
Problem solved. Return power supply 2 and replace the printer controller board. Disconnect CN44 Plug the connector in and turn the printer securely. Go to step 2. Power off and Replace the printer reconnect CN44. controller board. Go to step 3.
Page 58: Lower Fuser Thermistor Open Error
Did replacing the printer controller board fix the problem? Service Manual Disconnect CN44 Plug the connector in and turn the printer securely. Go to step 2. Turn the printer off Replace the printer and reconnect controller board. CN44. Go to step 3.
Page 59 Go to step 2. Recommend the customer replace the cartridge with the correct type. Clean the encoder Go to step 3. wheel and toner sensor. Problem solved. Go to step 4. Replace the printer Replace the controller board. affected toner sensor. Diagnostic Information...
Page 60: Yellow Printhead Error
5055-01x 930 - Yellow Printhead Error 930 Service Printhead Error Questions / Step Actions Is fuse 5 on the printhead control board open? 931 - Magenta Printhead Error Questions / Step Actions Is fuse 6 on the printhead control board open? 932 - Cyan Printhead Error Questions / Step...
Page 61: Black Printhead Error
LED printhead. Go to step 2. Plug the connector in securely. Problem solved. Replace the color drum sensor. Go to step 3. Problem solved. Replace the printer controller board. Diagnostic Information 2-11...
Page 62: Black Drum Sensor Error
936 - 939 Cassette Error 936 Service Paper Option Questions / Step Actions Are connectors CN35 and CN36 on the printer controller board connected properly? 2-12 Service Manual Go to step 2. Problem solved. Problem solved. Replace the printer Plug the connector in controller board.
Page 63: Duplex Error
5055-01x 940 - High Capacity Paper Feed Sensor Error Questions / Step Actions Is connector CN40 on the printer controller board connected properly? 941 - High Capacity Paper Feed Tray Error Questions / Step Actions Is connector CN40 on the printer...
Page 64: Engine Flash Error
5055-01x 945 - Engine Flash Error 945 Service Engine Flash Reflash the engine code. 946 - Printer / Printhead Controller Board Communication Error 946 Service Communication Questions / Step Actions Replace the printhead controller board. Did this fix the problem?
Page 65: Machine Id Error
952 - NVRAM Chip Failure 952 Service NVRAM Failure Replace the printer controller board. 954 - NVRAM CRC Failure Replace the RIP board. 955 - Code CRC 955 Service Code CRC <loc> Replace the RIP board.
Page 66: Processor Failure
5055-01x 956 - Processor Failure 956 Service System Board Replace the RIP board. 957 - ASIC Failure Replace the RIP board. 958 - NAND Failure 958 Service NAND Failure Replace the RIP board. 960 - RAM Slot 1 Bad 960 Service RAM Memory Error Replace RAM Card or the RIP board.
Page 67 5055-01x 970 - Standard Network Error 970 Service Standard Network 970 Service Network Card X 975 - Unrecognizable Network Port Software error. 976 - Unrecoverable Software Error in Network Port Software error. To to the and refer to the network card option section. 978 - Bad Checksum While Programming Network Card Software error.
Page 68 0V and +5 V between pins 1 and 2 on connector CN12 on the printer controller board? 2-18 Service Manual Go to step 2. Replace the face-up exit assembly. Go to step 3.
Page 69 Step Actions Are connectors CN409 and CN407 on the sensor board connected properly? Are connectors CN26 and CN29 on the printer controller board connected properly? Verify the belt up/ down sensor actuator is properly blocking the sensor by manually operating the belt up/down shaft.
Page 70: Sensor Controller Error
982 - Sensor Controller Error 982 Service Sensor Control Questions / Step Actions Turn the printer off and wait 30 seconds. Turn the printer on. Is error 982 displayed? 2-20 Service Manual Replace the belt up/ Replace the belt up/ down clutch.
Page 71: Black Gear Sensor Error
983 - Black Gear Sensor Error 983 Service Gear Sensor Questions / Step Actions Is connector CN20 on the printer controller board connected properly? Clean the gear sensor. Does this fix the problem? 984 - Yellow Gear Sensor Error Questions /...
Page 72: Transfer Belt Thermistor Error
Thermistor Error Questions / Step Actions Are connectors CN407 and CN408 on the sensor board connected properly? Is connector CN29 on the printer controller board connected properly? 986 - Transparency (OHP) Sensor Error 986 Service OHP Sensor Questions / Step Actions...
Page 73: Cpu Error
Replace the temperature and humidity sensor. Did this fix the problem? 993 CPU Error Replace the printer controller board. Replace the printer Replace the upper controller board. and lower transparency sensor. Go to step 2.
Page 74: Density Sensor Error
Questions / Step Actions Are connectors CN406 and CN407 on the sensor board connected properly? Is connector CN29 on the printer controller board connected properly? Did replacing the density sensor fix the problem? 2-24 Service Manual Go to step 2.
Page 75: Attendance Messages G
Check <device> • The specified device is not connection fully connected. • Hardware failure. Clearing Job The printer is deleting all job Accounting Stat statistics stored on the hard disk. Meaning Wait for the message to clear.
Page 76 5055-01x Message Close Side The printer side door is open. Door Close Top Door The printer top door is open. Close Tray <x> The high capacity feeder door Top Cover is open. Copying The printer is processing a copy job originating from the...
Page 77 Disk Recovery The printer is attempting to x/5 yyy% recover the hard disk. Enabling Menus The printer is responding to a request to make the menus available to all users. Engine The printer is warming the Warming fuser assembly.
Page 78 5055-01x Message Held Jobs May The printer memory is too full. be Lost Infrared <x> An infrared interface is the active communication link. Insert Tray <x> The specified tray is either missing or not fully inserted. Install <device> The printer is requesting a...
Page 79 5055-01x Message Load <x> The printer is trying to feed paper from a source it detects is empty. Load Manual A request for a manual feed job has been sent to the printer. The printer is ready for insertion of a single sheet into the manual feed slot.
Page 80 Wait for the message to clear. Wait for the message to clear. • Send a job to the printer. • Press Go to quickly Press Go to print the jobs. Press Return or Stop to delete jobs. Wait for the message to clear.
Page 81 An error occurred while the Error <x> printer was programming code into memory. Queuing and The printer is deleting one or Deleting Jobs more held jobs and sending one or more jobs to print. Queuing Jobs The printer is sending one or more held jobs to print.
Page 82 5055-01x Message Ready Hex The printer is in Hex Trace mode and is ready to receive and process print jobs Remove Paper The specified output bin is <specified bin> full. Resetting Maint The printer is resetting the Cnt Value counter that tracks wear on the fuser.
Page 83 Wait for the message to clear. • Press Go to print the • Press Menu to open the Download the correct emulator version from Lexmark’s Web site. Clear the paper path. If the message cannot be reset, go to the Service Check” on page...
Page 84 Config Error is inserted into any tray location except tray 1. 34 Short Paper The paper is too short. 35 Res Save The printer lacks the memory Off Deficient to enable Resource Save. Memory 37 Insufficient The printer memory does not...
Page 85 5055-01x Message 37 Insufficient The printer cannot Defrag Memory defragment flash memory. 37 Insufficient The printer memory is full and Memory cannot continue processing current jobs. 38 Memory Full The printer is processing data, but the memory is full. 39 Complex...
Page 86 There is not enough free space in flash memory. 2-36 Service Manual Meaning • Turn off the printer and • Check the high capacity • Open bin 1 to clear the • Press Go to clear the • Press Go to clear the •...
Page 87 Job Menu and reset the printer. connecting the ENA and the printer is securely attached. Turn the printer off and then on to reset. message and continue printing. message. Buffer menu item in the Serial Menu is set to Disabled.
Page 88 Turn off and unplug the printer. Remove the excess flash options. Plug the printer in and turn it on. Turn off and unplug the printer. Remove the excess trays. Plug the printer in and turn it on.
Page 89 5055-01x Message 62 Disk Full Insufficient memory on the hard disk. 63 Unformatted The printer detects an Disk unformatted hard disk. 64 Unsupported The printer detects an Disk Format unsupported disk format. 80 Belt The transfer belt has reached Exhausted end of life.
Page 90 84 All Photo All of the photodevelopers Devs have reached end of life. Exhausted 84 Black Photo The printer has detected an Dev Abnormal abnormal black photodeveloper. 84 Black Photo The black photodeveloper has Dev Exhausted reached end of life.
Page 91 5055-01x Message 84 Color Photo The color photodevelopers Devs have reached end of life. Exhausted 84 Color Photo The color photodevelopers Dev Life are nearing end of life. Warning 88 Black Toner The black toner cartridge is Empty empty. See note below 85 Toner Empty The oil coating roll has Coating Roll...
Page 92 Message 88 <color> The printer has ceased Toner Empty operating because the specified toner cartridge is empty. 88 <color> The printer has detected that Toner Low the specified toner cartridge is low. 2-42 Service Manual Meaning Install a new toner cartridge and go to “Map 7 - False “88...
Page 93: Maintenance Analysis Procedures (Maps)
Questions / Actions Close the side (turn guide) door. Does the message reset? Disconnect CN30 from the printer controller board. While activating the door switch, is there continuity at pins 1 and 2 of the connector? Map 2 - False “Close Top Door” Message...
Page 94 5055-01x Map 3 - False “Close Tray (X) Top Cover” Message Step Questions / Actions Remove the rear cover on the high capacity paper feeder and observe LED 9 on the HCPF card while actuating the cover open micro-switch. Does the LED go on and off, while opening and closing the door? 2-44...
Page 95 Is the paper remaining actuator inside the cassette drawer binding, or operating incorrectly? Are connectors CN35 and CN36 on the printer controller board, and CN10 on the expansion feeder control card associated with the failing tray properly connected? Replace the paper remaining sensor board for the problem tray.
Page 96 Questions / Actions Is the OCR properly installed? Is the OCR contact at the rear of the fuser damaged or broken? Is CN44 on the printer controller board properly connected? Map 6 - False “<Color> Print Unit Missing” Message Step...
Page 97 Is the toner remaining photo interrupter sensor clean and free of obstructions? Is the connector of the problem color properly connected on the printer controller board? Magenta - CN18 Yellow - CN21 Cyan - CN19 Black - CN22 Go to step 2.
Page 98 Map 9 - False “41 Open Bin 1 Exit Tray” Message Step Questions / Actions Is the exit tray switch actuator broken or damaged? Disconnect CN31 from the printer controller board. When activating the paper exit tray switch, is there continuity between pins 1 and 2? 2-48 Service Manual Go to step 2.
Page 99 Is the problem with a specific paper tray or the duplex unit? Is the problem with tray 1? Are connectors CN 35 and CN36 on the printer controller board properly connected? Are connectors CN3 and CN1 on the expansion paper feed...
Page 100 Replace the duplex interface card. Does this fix the problem? Replace the duplex interface cable. Does this fix the problem? Are CN37 and CN38 on the printer controller board properly connected? 2-50 Service Manual Replace the Replace the defective upper and...
Page 101 Do the size sensor levers operate correctly? Are the following connectors properly connected: CN2 (tray 1) on the printer controller board. CN4 on the expansion feeder control card (trays 2-5). Replace the paper size sensor card. Does this fix the problem? Go to step 2.
Page 102: Symptom Table
Make sure the color print units are completely installed in the printer. Go to the page Transparencies Make sure you’re using the recommended Lexmark curl excessively. transparencies. Also be sure the paper delivery is set to the rear exit. The printer...
Page 103 5055-01x Symptom Fuser failure. Go to the on page No paper pick-up Go to the from page multipurpose tray. No paper pick-up Go to the from upper or page lower cassettes. Registration Go to the roller does not page rotate. Operator panel Go to the Diagnostic Aids chapter and run the LCD and does not operate...
Page 104 Be sure you have paper in the MPF. feed from MPF. Be sure the MPF paper present sensor connector (CN11) is connected to the printer controller board. If the paper still does not feed, go to the Service Check” on page...
Page 105: Service Checks
1 unit if necessary. If this does not correct the problem, replace the printer controller board. Action Be sure connector CN4 on the printer controller board is firmly connected. If there still is a problem, replace the drive 2 stepper motor. Diagnostic Information...
Page 106: Duplex Service Check
Photo- interrupter Assembly Expansion Paper Feed Service Check If you have a “200 Paper Jam Tray (X)” error code, check the option connection cable for proper connection to the printer or other paper feeder. Feeder Drive Motor • Gears • Feeder Solenoid •...
Page 107: Face-Down Stacker Full Service Check
Check the stacker full detection lever for damage. Check for a voltage fluctuation between 0 V and +5 V between pins 2 and 3 of connector CN9 on the printer controller board while actuating the sensor. Go to the Paper Feed Sensor / Switch Test”...
Page 108: Operator Panel Service Check
5055-01x Operator Panel Service Check When you replace the PC drum unit, all three color units must be replaced at the same time. • Operator Panel • Operator Panel Cable • RIP Board Paper Carrying Service Check Paper has not exited or is stopped in the high capacity paper feeder (Area F, 249).
Page 109 Check the failing paper feed solenoid for continuity. Also check connector CN24 (tray1) and CN16 (MPF) on the printer controller board and CN5 on the expansion feeder control card. Check for a fluctuation between 0 and +5 V on the...
Page 110 Be sure all guide surfaces in the paper path are free of dirt. Check the registration roller clutch for continuity. Be sure connector CN13 on the printer controller board is connected properly. Check for a fluctuation of between 0V and +5 V between pins 1 and 2 of connector CN11 on the printer controller board while actuating the sensor.
Page 111 5055-01x Paper has entered the fuser and exited the printer (Area B). Fuser • Fuser Exit Lower Roller • Exit Guide • FU/FD Flap Solenoid • Exit Flap Clutch Lever • Gears • Fuser Exit Upper Roller • Paper Exit...
Page 112 5055-01x Paper has entered the duplex unit (Area D). Feed Rollers Belts Duplex Unit • Duplex Stopper Motor • Side Fence Stepper Motor • Feed Roller Solenoid Assembly • Paper Re- feed Solenoid Assembly 2-62 Service Manual Action Check for wear or damage to feed rollers and belts. Be sure the duplex unit is properly installed and that all connections are correct.
Page 113: Paper Exit, Fu/Fd Service Check
Check the paper remaining sensor for dust, dirt or damage. Repair or replace as necessary. Be sure CN35 and CN36 on the printer controller board are connected properly, or CN10 on the expansion paper feeder control board for the associated tray.
Page 114: Photodeveloper Missing Service Check
Clean or replace the photodeveloper drum unit if necessary. Check the sensing contacts on the sub-frame assembly. Clean or replace the affected contacts or sub-frame. If the problem remains, replace the high voltage unit (HVU). If the problem remains, replace the printer controller board.
Page 115: Power Supply Service Check
Power Supply 2 Action Be sure the switch is on and the power cord is firmly plugged into the printer. Be sure the correct voltage is present at the outlet. Check the power cord for continuity. The power supply fuses may be blown. Unplug the machine and check fuse F2 on the power supply 1 for continuity.
Page 116: Marks On Paper Service Check
5055-01x Marks on Paper Service Check If you have evenly spaced marks on the paper, measure the distance between the marks and locate the symptom below. Check the assembly for dirt or damage and clean as necessary. Run a test print to verify the problem has been corrected.
Page 117 5055-01x Fuser Part Locations mm From Paper Center Thermistor Hot Roll Thermistor BUR TCO Hot Roll TCO BUR Detact Fingers Hot Roll 113.5/75/37.5/0/-37.5/-75/-113.5 Detact Fingers BUR 134/90/45/0/-45/-90/-134 Exit Rollers 96/37.5/-37.5/-96 Star Rollers 127/60/15/-15/-60/-127 2-67 Diagnostic Information...
Page 118: Transfer Belt Up/Down Service Check
Be sure connector CN26 is firmly connected to the printer controller board. Replace the belt up/down unit if necessary. Check and replace the belt up/down lift cam shaft if necessary. If there still is a problem, replace the printer controller board.
Page 119: Image Quality Troubleshooting
Be sure you have selected the correct Paper Weight setting for the media you’re using. Be sure the affected print unit is completely installed in the printer. Set print darkness to 4 from the Color Menu. Clean the printhead LEDs.
Page 120 “Black Line” on page Replace the oil coating roll. Be sure the affected photodevelopers are completely installed in the printer. Be sure the affected photodevelopers are completely installed in the printer. Replace the photodevelopers. If the page is black, replace just the black photoconductor.
Page 121 Action Clean the LEDs. Make sure the affected photodeveloper is completely installed in the printer. Remove the affected photodeveloper and gently shake it back and forth to distribute the toner evenly. Reinsert the print unit and try printing the job again.
Page 122 Be sure the paper you load fits under the two corner tabs at the front of the tray. Be sure all four corners of the printer are resting on a level surface. Turn the printer off and back on. The...
Page 123 High Voltage Unit (HVU) Printer Controller Board Printhead Controller Board Action Be sure the printer is not in a damp environment and the paper is not curled or wavy due to moisture. If necessary inform the customer about correct storage.
Page 124: Black Line
5055-01x Black Line Possible Cause Photodeveloper Drum Fuser Detach Pawl Fuser Roller Surface Fuser Thermistor Surface LED Printhead Black Print Possible Cause High Voltage Unit (HVU) Sub-frame Photodeveloper Drum Set 2-74 Service Manual Action Clean any dirt from the drum surface.
Page 125: Missing Colors
5055-01x Missing Colors Possible Cause Toner Cartridge Unit High Voltage Unit LED Printhead Unit LED Printhead Controller Board High Voltage Unit (HVU) Transfer Belt Unit Action Be sure the toner cartridge and the PC drum unit are properly seated. Be sure the contacts on the print unit are clean.
Page 126: Uneven Printing
Action Firmly install the PC drum unit into the toner cartridge and the print unit into the printer. Check the belt unit for scratches or nicks. Be sure there is no toner buildup on the belt. Replace the belt...
Page 127: Options Service Check
Note: The Serial Wrap Test is designed to check the serial port hardware by using a wrap plug (P/N 1329048) and invoking the Serial Post Diagnostic Test. The test helps isolate the printer from the serial cable and host. The test provides failure information on the display for approximately three seconds.
Page 128 5055-01x Hard Disk Option Service Tip: The 5055-01x printers support one hard disk option. Be sure only one 3.2 GB or larger one hard disk option is installed. Be sure the fixed disk and the fixed disk board are correctly installed. Run the “Quick Disk Test”...
Page 129: Diagnostic Aids
Note: When trouble shooting, or prior to making any adjustment to print quality, always be sure of the following: • The printer is installed on a level rigid surface. • The OPCs are never exchanged. Do not exchange a black OPC for a color OPC, as they have different surface phase counts.
Page 130: Using The Operator Panel
The operator panel on your printer has a 2-line by 16-character liquid crystal display (LCD), five buttons, and one indicator light. The light indicates whether the printer power is on and whether the printer is idle or busy processing a job.
Page 131: Operator Panel Buttons
• Enter the menus from the • Scroll to the next ( menu item, or value. • Increase or decrease a numerical value for a menu item setting. • Display the Job Menu or the Supplies Menu while the printer is busy. Select Press Select •...
Page 132: Printing The Menu Settings
5055-01x Printing the Menu Settings 1. From the printer operator panel, press 2. Continue to press and release 3. Press Select is on the second line Print Menus 4. Press again to print the page. The message Select Menu Settings after the menu settings page prints.
Page 133 5055-01x JOB MENU Reset Printer Cancel Fax Confidential Job Held Job POSTSCRIPT MENU Print PS Error Font Priority Image Smoothing NETWORK MENU PCL SmartSwitch PS SmartSwitch MAC Binary PS NPA Mode Network Buffer Job Buffering network <x> setup Std Net Setup...
Page 134: Diagnostic Mode
To access the diagnostics printer settings and operations: 1. Turn off the printer. 2. Press and hold Go and Return. 3. Turn on the printer. Release the buttons after the Performing Self Test message displays. Setting Printer Alignment X= sxxx* Y= sxxx*...
Page 135 No buttons are active while the Alignment Test page is printing. Once it is complete, the Alignment screen will be displayed again. The previously active margin value flashes. The printer attempts to print the Alignment Test page from the default paper source. If the default source only supports envelopes, then the page prints from Tray 1.
Page 136: Print Tests
Print Tests Input Source Print Tests The Diagnostic Input Source Print Tests may be used to verify that the printer can print on media from the installed input sources, which are available within the Print Tests menu. Chose from following: •...
Page 137 Quick Test is narrow or wide, (N for narrow, W for wide). Print Quality Pages Execution of this diagnostic function causes the printer to print the Print Quality Test Pages. Since the printer is in diagnostics mode, the toner cartridge lockout functionality is disabled. Print Quality Pages can be printed from the Configuration Menu Group.
Page 138: Hardware Tests
5055-01x Hardware Tests LCD Hardware Test The LCD Hardware Test causes the printer to continually execute the LCD display test. To cancel the test, press Return or Stop. Button Test The Button Test is used to verify the operation of each button on the operator panel.
Page 139 99,999. The power indicator blinks indicating the memory test is in process. The printer runs this test continually. The test can be terminated by powering off the printer. Each time the test finishes, the screen is updated with the result. If the test is successful, the Pass Count increments by 1.
Page 140 99,999. The power indicator blinks indicating the memory test is in process. The printer runs this test continually. The test can be terminated by powering off the printer. Each time the test finishes, the screen is updated with the result. If the test is successful, the Pass Count increments by 1.
Page 141 99,999. The power indicator blinks indicating the memory test is in process. The printer continually runs the same test until cancelled from the operator panel by pressing Return or Stop. Each time the test finishes, the screen is updated with the result. If the test is successful, the Pass Count increments by 1.
Page 142 5055-01x If the test fails, the Fail Count increments by one and one of the following failure messages displays for approximately three seconds: Sync Busy Error, Byte Interrupt Request Error, Strobe Interrupt Request Error, Init Fall Error, Init Busy Error, Init Rise Error, Host Busy Error, RAM Data FF Error, RAM Data AA Error, RAM Data 00 Error, RAM Data 55 Error, DMA Count Error, DMA Address Error, DMA Interrupt Error, DMA Memory Error, DMA Background Error,...
Page 143 99,999. The power indicator blinks indicating the memory test is in process. The printer runs this test continually. The test can be terminated by powering off the printer. Each time the test finishes, the screen is updated with the result. If the test is successful, the Pass Count increments by 1.
Page 144 5055-01x Once the maximum pass count or fail count is reached, the test stops and final test results display: Receive Status Interrupt Error, Status Error, Receive Data Interrupt Error, Transmit Data Interrupt Error, Transmit Empty Error, Threshold Error, Receive Data Ready Error, Break Interrupt Error, Framing Error, Parity Error, Overrun Error, Data Error, Data 232 Error, Data 422 Error, FIFO Error, DSR Error, DSR PIO Error, DSR Interrupt Error, CTS Error, CTS PIO Error, CTS Interrupt Error.
Page 145: Device Tests
5055-01x Device Tests Quick Disk Test The Quick Disk Test performs a non-destructive read/write on one block per track on the disk. The following message displays while the test is running: Quick Disk Test Testing... The Power indicator blinks while the test is in progress. If the test is successful, the following message displays.
Page 146 5055-01x Disk Test/Clean The Disk Test/Clean Test causes the disk to be formatted, destroying all data on the disk and should not be attempted on a good disk. This test should only be used when the disk contains unusable data. Note: This can be an extremely lengthy test depending on the disk size, and leaves the disk unformatted.
Page 147 5055-01x Flash Test The Flash Test writes and reads data to the flash device, destroying all data, leaving the flash unformatted. The servicer must reformat the flash using the Format Flash menu operation. To run this test, select Flash Test from the DEVICE TESTS menu. The following message displays warning the customer that all flash contents will be lost: Files Will be...
Page 148: Diagnostics - Printer Setup
5055-01x Diagnostics - Printer Setup Defaults The following printer settings are used to determine whether U.S or non-U.S. factory defaults should be used: • = U.S. * • = Non U.S. Light Quantity • Cyan • Magenta • Yellow •...
Page 149 5055-01x Par S Strobe Adj Note: This message displays only if the printer is confused with the standard parallel port. Par 1 Strobe Adj Note: This message displays only if a parallel port is available through the PCL slot 1.
Page 150: Viewing And Resetting The Drum Counters
1 for Letter, A4, A5, B5 and envelopes, and by 1.2 for Legal and B4. It increments by 2 for 11 x 17 and A3. The counters are used to track printer usage. The current value of the drum counter may be viewed in the Diagnostic menus by selecting the Drum Count menu, but this value is not viewable from the Ready menu.
Page 151 The page count can be changed through the Diagnostic menus. This menu is used by the servicer to reset the Page Count whenever the engine board, containing NVRAM memory, is replaced. When Page Count is selected from the PRINTER SETUP menu, the current page count displays as follows: Page Count =1234567* The left-most digit (‘1’...
Page 152 Configuration ID is validated. If the ID is invalid, then the Invalid ID displays momentarily on Line 2 before the ID re-displays. If the ID is valid, it is stored in NVRAM and the printer automatically activates the new setting, in normal mode.
Page 153: Diagnostics - Error Log
Diagnostics - Error Log Viewing the Error Log The Error Log provides a history of printer errors, containing the 12 most recent errors that have occurred on the printer. The most recent error displays in position 1, and the oldest error displays in position 12.
Page 154 = 0 to xxxxxxx Reset 80 Fuser =Yes 80 Belt Maint = 0 to xxxxxxx Reset Belt Maint =Yes Exiting Diagnostics Mode To exit diagnostics mode and POR the printer into normal user mode, press EXIT DIAGNOSTICS. 3-26 Service Manual 2-000 4-000...
Page 155: Repair Information
4. Repair Information Service Precautions Observe the following precautions whenever you service the printer: • Be sure to unplug the printer from the outlet before attempting to service the printer. • To reassemble the printer, reverse the order of disassembly unless otherwise specified.
Page 156: Handling Printed Circuit Boards
5055-01x Handling Printed Circuit Boards The following precautions must be observed when handling circuit boards with metal oxide semiconductor integrated circuits. Transportation/Storage: • During transportation or when in storage, new circuit boards must not be indiscriminately removed from their protective conductive bags.
Page 157: Adjustments
5055-01x Adjustments High Capacity Paper Feed Timing Belt Adjustment 1. Secure the bracket with the screw, as shown. 2. Attach the spring and washer to the bracket with the screw. 3. Adjust the screw to 6mm +/- 1mm. 4. Tighten the screw completely. 5.
Page 158: Removals
5055-01x Removals Cover, Top Removal 1. Remove the operator panel. 2. Remove five screws from the bottom, the four screws from the back side, and the screw from the left side. Operator Panel Removal 1. Open the top unit and remove the toner cartridges and photoconductor drum units.
Page 159: Cover, Front Removal
5055-01x Cover, Front Removal 1. Remove the four hinge screws from the front cover. 2. Remove the front cover Repair Information...
Page 160: Cover, Front Left
5055-01x Cover, Front Left 1. Open the front cover and remove the cassette. 2. Remove the left front cover by removing the three screws. Cover, Rear Removal 1. Open the top unit. 2. Remove the three screws from the rear cover, and remove the cover.
Page 161: Cover, Solenoid Removal
5055-01x Cover, Solenoid Removal 1. Remove the screw from the solenoid cover. 2. Remove the solenoid cover. Cover, Left Side Removal 1. Remove the upper cassette, front cover, paper exit tray, and duplex unit. 2. Remove the five screws from the left side cover, and remove the cover.
Page 162: Cover, Right Side Removal
5055-01x Cover, Right Side Removal 1. Open the top unit and remove the front cover and upper cassette. 2. Remove the seven screws from the right side cover together with the turn guide, and remove the cover. 3. When installing the right side cover, insert the turn guide shaft into the bearing.
Page 163: Cover, Rip Board Removal
5055-01x Cover, RIP Board Removal 1. Loosen the eight screws and remove the RIP cover by sliding upward. 2. Remove the three harnesses and one flat cable of the RIP board connector. 3. Remove the two screws from the parallel port connector and the screw from the USB connector.
Page 164: Tray, Paper Exit Removal
5055-01x Tray, Paper Exit Removal 1. Unlatch the hinge at the back side, then unlatch the hinge on the front side. 2. Remove the paper exit tray. 4-10 Service Manual...
Page 165: Rip Box Removal
5055-01x RIP Box Removal 1. Remove the five screws from the RIP box. 2. Slightly lift and remove the RIP box. Electronic Box Removal 1. Open the top unit and remove the back cover, front cover, cassette, turn guides and right side cover. 2.
Page 166: Led Printhead Removal
5055-01x LED Printhead Removal 1. Open the top unit, remove the top cover, toner cartridges and photoconductor drum units. Note: Remove the transfer belt, or spread a cloth or paper over the transfer belt to protect it from damage. 2. Remove the screw from the printhead holder, and remove the holder.
Page 167 When replacing the LED printhead, replace the corresponding EEPROM shipped with the printhead, on the printhead controller board. Place the printer in Diagnostic Mode, input the printhead light quantity value plus eight (refer to note below) from the printhead label. Be sure to remove any fingerprints or stains from the printhead lens.
Page 168: Eraser Removal
5055-01x Eraser Removal 1. Remove the appropriate printheads. Spread a cloth or paper over the transfer belt to protect it from damage. 2. Remove the two screws from HSP holder, and remove the holder. 3. Remove the top cover. 4. Disconnect the connector (see arrow). 5.
Page 169: Printhead Controller Board Removal
5055-01x Printhead Controller Board Removal 1. Remove the top cover. 2. Remove the 20 printhead controller board connectors. 3. Remove the 10 screws from the printhead controller board, and remove the board. Note: When replacing the board, be sure to return the four EEPROMs on the former board to the same positions on the new board.
Page 170: Upper Fan Removal
5055-01x Upper Fan Removal 1. Open the top unit and remove the toner cartridges and photoconductor drum units, top cover, and face-down guide assembly. 2. Remove the four screws and the five screws from the upper bracket, and remove the bracket. 3.
Page 171: Multi-Purpose Feeder Tray Removal
1. Open the top unit and remove the front cover, cassette feeder, turn guides and right side cover. 2. Open the multi-purpose feeder and slide it toward the magnet in the direction of the arrow, removing it from the printer. 4-17 Repair Information...
Page 172: Paper Feed Roller Removal
5055-01x Paper Feed Roller Removal 1. Remove the front cover. 2. Remove the manual paper feed tray. 3. Remove the right side cover and turn guide. 4. Remove the upper cassette. 5. Release the clutch and until the paper feed roller screw is visible.
Page 173: Paper Present Sensor Removal
5055-01x Paper Present Sensor Removal 1. Open the paper feed cover and pull out the duplex unit halfway. 2. Unclip the paper present sensor from the mounting. 3. Disconnect the connector and remove the sensor. 4-19 Repair Information...
Page 174: Paper Feed Frame Removal
5055-01x Paper Feed Frame Removal 1. Open the top unit and remove the RIP board cover, RIP board, RIP box, and electronic box. Open the turn guide and paper feed cover and pull out the duplex unit halfway. 2. Remove the belt unit. 3.
Page 175: Cassette Guide Removal
5055-01x Cassette Guide Removal 1. Remove the paper feed frame. 2. Remove the front cover, cassette, turn guide, right side cover and paper feed frame. 3. Remove the screws from the cassette guide, and remove the guide. 4-21 Repair Information...
Page 176: Temperature/Humidity Sensor Removal
5055-01x Temperature/Humidity Sensor Removal Paper Feed Solenoid Removal 1. Open the top unit and remove the RIP cover, RIP board, RIP box, and electronic box. 2. Remove the screw from the temperature/humidity sensor, and remove the sensor. 3. Remove the two screws from the paper feed solenoid bracket and remove the solenoid.
Page 177: Gear Cover Removal
5055-01x Gear Cover Removal Multi-Purpose Feeder Roll Removal Multi-Purpose Feeder Clutch Removal OHP Detection Sensor (Upper) Removal 1. Open the top unit, and remove the upper cassette, front cover, multi-purpose feeder, right side cover, and turn guide. 2. Remove the two screws from the gear cover, and remove the cover.
Page 178 5055-01x 6. Remove the screw from the OHP detection sensor (upper). 7. Turn the bearing stopper of the multi-purpose feeder roll forward 1/4 turn and remove upward. 8. Remove the C-clip and remove the multi-purpose feeder clutch. Note: After reassembling the components, coat the contact areas of the multi-purpose feeder roll shaft and multi-purpose feeder ground plate with conductive grease.
Page 179: Fanning Pad Removal
5055-01x Fanning Pad Removal 1. Open the top unit and remove the upper cassette, front cover, turn guide, multi-purpose feeder, right side cover, and multi- purpose feeder roll. 2. Release clips at 4 positions and remove the fanning pad. 4-25 Repair Information...
Page 180: Registration Sensor Removal
5055-01x Registration Sensor Removal 1. Open the top unit and remove the upper cassette, front cover, turn guide, multi-purpose feeder, right side cover, and multi- purpose feeder frame. 2. Disconnect the connector of the registration sensor and remove the sensor. 4-26 Service Manual...
Page 181: Multi-Purpose Feeder Paper Present Sensor Removal
5055-01x Multi-Purpose Feeder Paper Present Sensor Removal 1. Open the top unit and remove the upper cassette, front cover, turn guide, multi-purpose feeder, right side cover, turn guide, and multi-purpose feeder frame. 2. Disconnect the connector and remove the multi-purpose feeder paper present sensor.
Page 182: Paper Carrying Frame Removal
5055-01x Paper Carrying Frame Removal Paper Carrying Roller (Upper) Removal Paper Carrying Clutch Removal OHP Detection Sensor (Lower) Removal 1. Open the top unit and remove the upper cassette, front cover, turn guide, multi-purpose feeder, right side cover, turn guide, OHP detection sensor (upper), multi-purpose feeder frame, back cover, RIP cover, RIP board, RIP box, and electronic box.
Page 183: Registration Frame, Registration Clutch Removal
5055-01x Registration Frame, Registration Clutch Removal 1. Open the top unit, open the turn guide, open the paper feed cover and pull out the duplex unit halfway. 2. Remove the two screws from the registration frame. 3. Remove the registration clutch. Note: When installing, set the clip of the registration clutch to the stopper.
Page 184: Transfer Belt Removal
Turn the printer off when the belt lowers. • Turn the printer off and proceed with step 5. WARNING: Do not turn the printer off until the Power Off to Replace Items message appears. 1. Turn the printer off along with any optional devices connected to the printer.
Page 185 5055-01x 3. Loosen the thumbscrews as shown. 4-31 Repair Information...
Page 186 5055-01x 4. Lift and remove the transfer belt cover. 5. Loosen the thumbscrews as shown. 4-32 Service Manual...
Page 187 Replace Supplies, then select Belt, and select Replaced. The message Printing Alignment Page appears and the printer prints the alignment page. Follow the instructions on the display to set the alignment values for the new transfer belt.
Page 188: Belt Up/Down Detection Sensor Removal
5055-01x Belt Up/Down Detection Sensor Removal 1. Open the top unit and remove the waste toner bottle and belt unit. 2. Remove the belt up/down detection sensor from the mounting board. 3. Remove the connector from the belt up/down detection sensor. 4-34 Service Manual...
Page 189: Sensor Board Removal
5055-01x Sensor Board Removal 1. Remove the transfer belt unit. 2. Remove the four connectors. 3. Remove the three screws from the waste toner full sensor board. 4-35 Repair Information...
Page 190: Density Sensor Removal
5055-01x Density Sensor Removal Separation Fingers Removal Sensor Cleaner Removal 1. Open the top unit and remove the belt unit. 2. Remove the three screws from the sensor bracket. 3. Remove the harness band and remove the two screws from the density sensor from the sensor bracket.
Page 191: Printer Controller Removal
1. Open the top unit and remove the RIP cover, RIP board, RIP box, and electronic box. 2. Remove the connectors and the eight screws from the printer controller. Note: When replacing the board, install the EPROM (U5) of the former board to the new board.
Page 192: High Voltage Power Supply Board (Hvu) Removal
1. Open the top unit and remove the RIP cover, RIP board, RIP box, electronic box, and printer controller board. 2. Remove the five screws from the printer controller board bracket. 3. Remove the connectors and remove the 12 screws.
Page 193: R Sub Frame Removal
Drum Gear Sensor Removal 1. Open the top unit, and remove the RIP cover, RIP board, RIP box, electronic box, printer controller, printer controller bracket, and high voltage power supply board. 2. Remove the two screws from the sub frame R from inside of the main unit.
Page 194: Sub Frame F1, Sub Frame F2 Removal
5055-01x Sub Frame F1, Sub Frame F2 Removal 1. Open the top unit. 2. Remove the two screws from the sub frames F1 and F2. Note: Spread a paper or cloth over the belt to protect the belt. Set the sub frame F to the position of the following colors depending on presence of upper detection button.
Page 195: Drive Gear Unit Sensor Assembly Removal
Drive Gear Unit Sensor Assembly Removal 1. Open the top unit and remove the gear cover, RIP cover, RIP board, RIP box, electronic box, printer controller, and high voltage power supply board. 2. Remove the screw from the drive gear unit sensor assembly.
Page 196: Belt Up/Down Clutch Removal
1. Open the top unit and remove the RIP cover, RIP board, RIP box, and electronic box. Remove the printer controller. Remove the printer controller bracket and the high voltage power supply board. 2. Remove the C-clip from the belt up/down clutch, and remove the clutch.
Page 197: Power Supply 1 Removal
5055-01x Power Supply 1 Removal 1. Open the top unit and remove the RIP cover, RIP board, RIP box, and electronic box. Remove the cassette, left front cover, and back cover. Remove the left side cover. 2. Remove the insulation sheet connector, two ground wires, five screws, two screws with washers, two screws with spring washers and remove the power supply.
Page 198: Power Supply 2 Removal
5055-01x Power Supply 2 Removal 1. Open the top unit and remove the RIP cover, RIP board, RIP box, and electronic box. 2. Disconnect the connector and remove the seven screws from Power Supply 2, and remove the power supply. 4-44 Service Manual...
Page 199: Drive Motor Assembly Removal
5055-01x Drive Motor Assembly Removal 1. Open the top unit and remove the RIP cover, RIP board, RIP box, and electronic box. 2. Remove the upper cassette, left front cover, and back cover. 3. Remove the turn guide. 4. Open the paper feed cover and remove the duplex unit. 5.
Page 200: Power Switch Removal
5055-01x Power Switch Removal 1. Remove the upper cassette, left front cover, paper feed cover, and left side cover. 2. Unlock the power switch and pull out the power switch. 3. Remove each terminal connected to the power switch. Note: When connecting, be careful to connect the connectors correctly.
Page 201: Connector, Duplex Unit Removal
5055-01x Connector, Duplex Unit Removal 1. Open the top unit and remove the upper cassette, left front cover, paper feed cover, left side cover, RIP cover, RIP board, RIP box, and the electronic box. Remove the turn guide and open the paper feed cover and remove the duplex unit. Remove the left side cover and power supply A.
Page 202: Paper Size Sensor Board Assembly Removal
5055-01x Paper Size Sensor Board Assembly Removal 1. Open the top unit and remove the RIP cover, RIP board, RIP box, and electronic box. Remove the upper cassette, front cover B, and back cover. Open the turn guide and paper feed cover and remove the duplex unit.
Page 203: Main Unit Fan Removal
5055-01x Main Unit Fan Removal 1. Remove the left side cover, the solenoid cover, and the rear cover. 2. Remove the two screws from the main unit fan bracket. 3. Remove the fan. 4-49 Repair Information...
Page 204: Main Drive Unit Removal
2. Open the turn guide and paper feed cover and remove the duplex unit. 3. Remove the left side cover, power unit 1, and power unit 2. 4. Remove the printer controller board. 5. Remove the bracket, high voltage power supply board, and sub frame R.
Page 205 5055-01x 12. Remove the two screws of the fuser connector cable assembly from the fuser connector plate. Note: Note the direction, when installing. 13. After removing the two screws on the bracket that attaches the rear side and paper exit side of the machine, remove the five screws, and four screws from the bracket as shown.
Page 206 5055-01x 14. Remove the bearing from the belt up/down switching shaft and remove the belt up/down switching shaft. 15. Remove the screw from the clutch stopper. The clutch stopper is attached to the ground plate with two screws. 4-52 Service Manual...
Page 207 5055-01x 16. Remove the five screws on the right side. 17. Remove the screw and the screw from the drive unit, and remove the unit. 18. Remove the two screws and the screw from the belt up/down clutch box and remove the belt up/down clutch. 19.
Page 208: Face-Up Paper Exit Assembly Removal
5055-01x Face-Up Paper Exit Assembly Removal Face-Up/Down (Flapper Detection) Sensor Removal Face-Up/Down Solenoid Removal Paper Delivery Sensor Removal Paper Exit Tray Switch Removal 1. Open the top unit and remove the upper cassette. Open the duplex cover and remove the duplex unit. 2.
Page 209: Face-Down Guide Assembly Removal
5055-01x Face-Down Guide Assembly Removal Paper Exit Motor & Full Sensor Removal 1. Open the top unit and remove the toner cartridges, photoconductor drum units, and upper cover. 2. Remove the top cover. 3. Disconnect the connector and remove the five screws and two snap bands from the face-down guide assembly.
Page 210 5055-01x 5. Remove the two screws of the motor from the face-down guide assembly. Remove the assembly. Note: When the motor is installed, press the motor 45 degrees in an upward direction when viewing from the rear. 6. Remove the face-down paper delivery full sensor from the face- down guide assembly.
Page 211: Turn Guide Cover Sensor Removal
5055-01x Turn Guide Cover Sensor Removal 1. Open the top unit and remove the upper cassette, front cover, multi-purpose feeder, right side cover, and turn guide. 2. Remove the two screws from turn guide sensor, and remove the sensor. 3. Remove the terminal. 4-57 Repair Information...
Page 212: Right Slide Rail Removal
5055-01x Right Slide Rail Removal 1. Remove the upper cassette. 2. Remove the screw from both left and right slide rails. Front Cover Open Switch Actuator Removal 1. Open the front cover. 2. Remove the two screws from the front cover open switch actuator.
Page 213: Lock Handle Assembly Removal
5055-01x Lock Handle Assembly Removal 1. Open the top unit. 2. Turn the plastic latch on the front and rear sides by 90 degrees. 3. Remove the lock handle assembly. 4-59 Repair Information...
Page 214: Top Unit Removal
5055-01x Top Unit Removal 1. Open the top unit and remove the top cover and face-down guide assembly. 2. Remove the screws and remove the top unit. 4-60 Service Manual...
Page 215: Stay Arm Removal
5055-01x Stay Arm Removal 1. Open the top unit and remove the face-down paper guide assembly. 2. Remove the yellow and black sub frame. 3. Remove the screw and the screw from the right stopper, and remove the stopper. 4. Remove the screw from the left stopper, and remove the stopper.
Page 216: Fuser Removal
5055-01x Fuser Removal 1. Open the top unit. 2. Pushing the front and back lock, hold the handle, raise and remove the fuser. 4-62 Service Manual...
Page 217: Options Removals
5055-01x Options Removals Expansion Paper Feeder Removal 1. Remove the cassette. 2. Remove the two screws from the front cover, removing the cover. 3. Remove the two screws from left side cover, and remove the cover. 4. Remove the two screws from right side cover A, and remove the cover.
Page 218 5055-01x 9. Remove the screw from paper the detection cover, and remove the cover. 10. Remove the paper detection sensor. 11. Remove the high capacity feeder guide. The cover is hinged in place. 12. Remove the screw from the paper feed roller assembly N5 from 4 positions, and remove the roller.
Page 219 5055-01x 13. Remove the screw from the gear cover, and remove the cover. 14. Remove the two screws from the paper carrying roller, and remove the roller. 15. Remove the connector and remove the two screws from the drive motor, and remove the motor. 4-65 Repair Information...
Page 220 5055-01x 16. Remove the six screws from the drive assembly, and remove the assembly. 17. Remove the two screws from the paper remaining detection board, and remove the board. 18. Remove the four screws from the solenoid assembly, and remove the assembly. 4-66 Service Manual...
Page 221 5055-01x 19. Remove the two bearings from the turn guide. The cover is hinged in place. 20. Remove the screw from the paper feed frame fuser plate, and remove the plate. 4-67 Repair Information...
Page 222 5055-01x 21. Remove the two screws from the fuser frame assembly, and remove the assembly. 22. Remove the three screws from the cassette guide assembly, and remove the assembly. 4-68 Service Manual...
Page 223 5055-01x 23. Remove the six screws from the second drive board assembly, and remove the assembly. 24. Remove the two screws from the paper size detection board, and remove the board. 25. Remove the screw from the size detection lever spring, and remove the spring.
Page 224 5055-01x 28. Remove the two screws from the lower drawer connector (female), and remove the connector. 4-70 Service Manual...
Page 225: Duplex Unit Separation Removal
5055-01x Duplex Unit Separation Removal 1. Remove the thumbscrews, C-clips, and screws as shown from both sides. 2. Remove the connectors and separate the duplex frame from the duplex unit. 4-71 Repair Information...
Page 226: Duplex Unit Removal
5055-01x Duplex Unit Removal 1. Remove the four screws from the interface board, and remove the board. 2. Remove the two screws from the duplex connector, and remove the connector. Duplex Timing Belt Removal 1. Remove the three C-clips from the three timing gears and remove the timing belts.
Page 227: Duplex Pressure Roller And Solenoid Removal
5055-01x Duplex Pressure Roller and Solenoid Removal 1. Remove the two screws securing the pressure roll solenoid assembly. Duplex Feed Roller And Solenoid Removal 1. Remove the two screws securing the feed roll solenoid assembly. 2. Remove the pressure roller and springs. 3.
Page 228: Duplex Side Fence Motor Assembly / Side Fence Removal
5055-01x Duplex Side Fence Motor Assembly / Side Fence Removal 1. Remove the three screws and remove the side fence motor assembly. 2. Remove the front and rear side fences. Note: When installing, spread the front and rear side fences to the sides and install.
Page 229: Duplex Paper Carrying Motor Removal
5055-01x Duplex Paper Carrying Motor Removal 1. Remove the gear cover. 2. Remove the screws from the duplex paper carrying motor and remove the motor. 4-75 Repair Information...
Page 230: Hcpf Covers Removal
5055-01x HCPF Covers Removal 1. Remove the two screws from the drive cover, and remove the cover. 2. Remove the front cover. 3. Remove the two screws from the right cover, and remove the cover. 4. Remove the top cover. 5.
Page 231: Hcpf Call Roller, Paper Feed Roller, Reverse Roller Removal
5055-01x HCPF Call Roller, Paper Feed Roller, Reverse Roller Removal 1. Open the top cover on the tray. 2. Remove the two screws from the transfer cover, and remove the cover. 3. Remove the retaining rings on the rollers, and remove the rollers.
Page 232: Hcpf Pickup Solenoid Removal
5055-01x HCPF Pickup Solenoid Removal 1. Remove the four screws from the transfer cover, and remove the cover. 2. Remove the two screws from the drive cover, and remove the cover. 3. Remove the screw from the clamp plate, and remove the plate. 4.
Page 233: Hcpf Paper End Sensor Removal
5055-01x HCPF Paper End Sensor Removal HCPF Paper Size Sensors (1, 2) Removal 1. Cover the paper level sensor with your hand and press the down button. The tray moves down. Lower the tray until the down sensor turns on. 2.
Page 234 5055-01x Notes: • To prevent damage to the stay, hold the stay when removing the sensors. • Be sure the side registration is not shifted, which may occur with the dismounting and mounting of the locking stay. If it is shifted, relocate the stay toward the front or rear to adjust.
Page 235: Hcpf Tray Motor Removal
5055-01x HCPF Tray Motor Removal 1. Remove the rear cover and the drive cover. 2. Remove the two screws of the tray motor, and remove the motor. 4-81 Repair Information...
Page 236: Hcpf Paper Level Sensor Removal
5055-01x HCPF Paper Level Sensor Removal 1. Remove the four screws from the transfer cover, and remove the cover. 2. Remove the two screws from the sensor, and remove the cover. 3. Remove the connector and screw from paper level sensor, and remove the sensor.
Page 237: Hcpf Power Supply Removal
5055-01x HCPF Power Supply Removal 1. Move the paper tray upward. 2. Disconnect the power cord. 3. Remove the front cover. 4. Remove the two screws from the power supply cover, and remove the cover. 5. Remove the four screws from the power supply unit and remove the unit.
Page 238 5055-01x 4-84 Service Manual...
Page 239: Locations
5055-01x 5. Locations Covers Diagram Locations...
Page 240: Major Parts Diagram
5055-01x Major Parts Diagram Service Manual...
Page 241 5055-01x Part Development Roll Supply Roll Doctor Blade Agitator Absorption Roll Registration Upper Roll Registration Lower Roll Registration Sensor Registration Detection Lever MPF Roll MPF Unit Fanning Pad Upper Feed Roll Lower Feed Roll Paper Feed Roll Part Paper Out Detection Lever Paper Out Detection Sensor Duplex Unit Transfer Sheet...
Page 242: Printer Controller Board
5055-01x Printer Controller Board Service Manual...
Page 243: Printhead Controller Board
5055-01x Printhead Controller Board Locations...
Page 244: Rip Board
5055-01x RIP Board Service Manual...
Page 245: Power Source Unit 1 Board
5055-01x Power Source Unit 1 Board Power Source Unit 2 Board Locations...
Page 246: High Voltage Power Supply Board
5055-01x High Voltage Power Supply Board Service Manual...
Page 247: Sensor Board
5055-01x Sensor Board Expansion Paper Feeder Controller Board Locations...
Page 248: Duplex Unit Controller Board
5055-01x Duplex Unit Controller Board Motor Drive Board Size Sensor Board 5-10 Service Manual...
Page 249: High Capacity Paper Feed (Hcpf)
5055-01x High Capacity Paper Feed (HCPF) 5-11 Locations...
Page 250: High Capacity Paper Feed Configuration
5055-01x High Capacity Paper Feed Configuration 5-12 Service Manual...
Page 251: Electrical Parts Layout
5055-01x Electrical Parts Layout 5-13 Locations...
Page 252: Driving Parts Layout
5055-01x Driving Parts Layout 5-14 Service Manual...
Page 253: Sensor And Switch Locations
5055-01x Sensor and Switch Locations 5-15 Locations...
Page 254 5055-01x 5-16 Service Manual...
Page 255: Component Locations
5055-01x Component Locations 5-17 Locations...
Page 256 Number Component Printhead Controller Board Operator Panel RIP Box Motor Driver Board Power Switch Printer Controller Board High Voltage Unit (HVU) Upper Left Fan Main Drive Motor Upper Right Fan Power Supply Fan Temperature/Humidity Sensor Paper Remaining Detection Sensor (Main Unit)
Page 257: Preventive Maintenance
6. Preventive Maintenance Maintenance Kit When nearing the end-of-life of the fuser or transfer belt, the following appears on the printer display, indicating that it’s time to message replace the fuser unit and/or transfer belt unit: 80 Belt Life Warning and/or 80 Fuser Life Warning...
Page 258: Periodic Maintenance
5055-01x Periodic Maintenance This table lists the parts to be periodically cleaned by the servicer. Part Name Paper Feed Unit: • Paper Feed Roller • MPF Roll Registration Unit: Registration Roller, Upper and Lower Charge/Exposure Unit: LED Head Transfer Unit: Transfer Belt Fuser Unit: Heat Rollers...
Page 259: Parts Catalog
5055-01x 7. Parts Catalog How to Use This Parts Catalog • SIMILAR ASSEMBLIES: If two assemblies contain a majority of identical parts, they are shown 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 260: Assembly 1: Covers 1
5055-01x Assembly 1: Covers 1 Service Manual...
Page 261 5055-01x Asm- Part Index Number 1 - 1 12G7360 56P9736 56P9555 56P9556 56P9539 56P9533 56P9534 56P9540 56P9545 56P9549 56P9532 56P9548 56P9543 56P9542 56P9550 56P9536 56P9537 56P9535 56P9531 56P9546 56P9547 56P9538 56P9551 56P9544 56P9554 56P9905 Units Description Board, Operator Panel Cable, Operator Panel Housing, Upper Operator Panel Housing, Lower Operator Panel Cover, Top...
Page 262: Assembly 2: Covers 2
5055-01x Assembly 2: Covers 2 Service Manual...
Page 263 5055-01x Asm- Part Index Number 2 - 1 56P9557 56P9558 11G0243 56P9564 56P9559 56P9561 56P9502 56P9565 56P9560 56P9563 56P9562 Units Description Exit Assembly, Face-Up Screw, Stopper Interrupter, Photo Cable, Face-Up Sensor Roller, Paper Exit Deflector, Face-Up Switch, Paper Exit Tray Cable, Paper Exit Switch Brush, Face-Up Static Discharge Solenoid Assembly, Face-Up Deflector...
Page 264: Assembly 3: Covers 3
5055-01x Assembly 3: Covers 3 Service Manual...
Page 265 5055-01x Asm- Part Index Number 3 - 1 56P9566 56P9572 56P9573 56P9574 11G0135 56P9568 56P9569 56P9577 56P9571 56P9570 56P9583 56P9567 56P9575 56P9576 56P9582 56P9578 56P9579 56P9580 11G0219 56P9581 Units Description Guide Assembly, Face-Down Spring, Face-Down Paper Full Lever, Face-Down Paper Full Roller, Face-Down Upper Feed Roller, Face-Down Pinch Spring, Face-Down Pinch Roller...
Page 266: Assembly 4: Covers 4
5055-01x Assembly 4: Covers 4 Service Manual...
Page 267 5055-01x Asm- Part Index Number 4 - 1 56P9584 Units Description Guide Assembly, Turn Parts Catalog...
Page 268: Assembly 5: Covers 5
5055-01x Assembly 5: Covers 5 7-10 Service Manual...
Page 269 5055-01x Asm- Part Index Number 5 - 1 56P9587 56P9589 56P9588 56P9590 11G0118 11G0117 11G0120 Units Description Feeder Assembly, Multi-Purpose Extender, MPF Cover, MPF Spring, MPF Pinion, MPF Rack, MPF Spring, Feeder Lock 7-11 Parts Catalog...
Page 270: Assembly 6: Upper Unit
5055-01x Assembly 6: Upper Unit 7-12 Service Manual...
Page 271 5055-01x Asm- Part Index Number 6 - 1 56P9591 56P9620 56P9638 56P9600 56P9601 56P9602 56P9603 56P9716 56P9718 56P9717 56P9720 56P9637 56P9625 56P9626 56P9628 56P9614 56P9618 56P9615 56P9612 56P9617 56P9613 56P9624 56P9627 56P9616 56P9630 56P9611 56P9608 56P9609 56P9592 56P9594 56P9595 56P9596 56P9597 56P9598 Units...
Page 272 5055-01x Assembly 6: Upper Unit (Continued) 7-14 Service Manual...
Page 273 5055-01x Asm- Part Index Number 6 - 35 56P9599 56P9610 56P9593 56P9619 56P9622 56P9623 56P9621 56P9629 56P9639 56P9604 56P9605 56P9606 56P9607 Units Description Printhead, LED Rail, Right Side Holder, Rear Printhead Bracket, Rear Upper Fan, Upper Right Fan, Upper Left Bracket, Fan Holder Frame, Link Connector, Upper...
Page 274 5055-01x Assembly 7: Base 1 7-16 Service Manual...
Page 275 5055-01x Asm- Part Index Number 7 - 1 56P9664 56P9503 56P9512 56P9511 11G0243 56P9665 56P9507 56P9520 56P9517 56P9519 56P9516 56P9518 56P9515 56P9503 56P9641 56P9505 56P9504 56P9521 56P9522 56P9523 56P9642 56P9643 56P9644 56P9645 56P9663 56P9659 56P9660 56P9654 56P9653 56P9652 56P9649 56P9648 56P9651 56P9650 Units...
Page 276: Assembly 7: Base 1
5055-01x Assembly 7: Base 1 (Continued) 7-18 Service Manual...
Page 277 5055-01x Asm- Part Index Number 56P9658 56P9646 56P9657 56P9656 56P9655 56P9661 56P9662 56P9524 11G0569 11G0579 11G0616 11G0572 11G0562 11G0577 11G0540 11G0617 11G0565 11G0566 Units Description Sensor Assembly, K Toner Remaining Frame, Sub Sensor Assembly, Y Toner Remaining Sensor Assembly, C Toner Remaining Sensor Assembly, M Toner Remaining Rod, Lock Shaft, Changing...
Page 278: Assembly 8: Base 2
5055-01x Assembly 8: Base 2 7-20 Service Manual...
Page 279 5055-01x Asm- Part Index Number 8 - 1 56P9666 56P9667 56P9668 56P9669 56P9673 56P9670 56P9672 56P9671 Units Description Support Assembly, Upper Unit Pin, Upper Unit Support Handle Assembly, Lock Handle, Lock Cover, Electronic Shroud, Cable Guide, Cable Guide, Cable 7-21 Parts Catalog...
Page 280: Assembly 9: Base 3
5055-01x Assembly 9: Base 3 7-22 Service Manual...
Page 281 5055-01x Asm- Part Index Number 9 - 1 56P9688 56P9689 56P9690 11G0243 56P9691 11G0219 56P9899 11G0283 56P9681 56P9680 56P9898 56P9683 56P9682 56P9694 56P9696 56P9502 56P9695 56P9679 56P9674 56P9678 56P9676 56P9677 56P9675 56P9684 56P9685 56P9686 56P9687 56P9693 56P9697 56P9692 Units Description Frame Assembly, MPF Clutch, MPF Actuator, MPF...
Page 282: Assembly 10: Electrical
5055-01x Assembly 10: Electrical 7-24 Service Manual...
Page 283 Cable Assembly, Sensor Board Switch, Power Cable, Power Switch Board, 120 V Motor Driver Board, 230 V Motor Driver Cable Asm., Conditioning Printer Controller Board, Heater Drive Resistor, Conditioning Cable Assembly, Conditioning Joint Motor Assembly, 120 V Motor Assembly, 230 V...
Page 284 5055-01x Assembly 10: Electrical (Continued) 7-26 Service Manual...
Page 285 11D0336 11D0337 Units Description Board, High Voltage Power Supply Cable Assembly, Printer Controller Power 2 Cable Assembly, Printer Controller Power 1 Power Supply, 120 V (2) Power Supply, 230 V (2) Cable High Voltage Power Supply Board Power Cord - USA, Canada, APG, LAD...
Page 286: Assembly 11: I/F Controller
5055-01x Assembly 11: I/F Controller 7-28 Service Manual...
Page 287 Description Cable Assembly, Power RIP Card, Riser Board, RIP Controller Fan, RIP Box, RIP Cable Assembly, 80 Pin RIP Printer Controller Cable, Operator Panel Cover, RIP Box Cable Assembly, Power MAC Cable Assembly, MIF Board, RIP Controller (Network) Card, SDRAM DIMM...
Page 288: Assembly 11: I/F Controller (Continued)
5055-01x Assembly 11: I/F Controller (Continued) 7-30 Service Manual...
Page 289 Number 56P9926 56P9927 56P9928 56P9929 56P9930 56P9932 Units Description Software, Optra Forms Software, Optra Forms Director DIMM, Lexmark Forms 4MB Flash DIMM, Lexmark Forms 8MB Flash DIMM, Lexmark Forms 16MB Flash Hard Disk, Lexmark Forms 5+ GB 7-31 Parts Catalog...
Page 290: Assembly 12: Fuser Unit
5055-01x Assembly 12: Fuser Unit 7-32 Service Manual...
Page 291 5055-01x Asm- Part Index Number 12 - 1 56P9751 56P9752 Units Description Fuser, 120 V Fuser, 230 V 7-33 Parts Catalog...
Page 292: Assembly 13: Cassette
5055-01x Assembly 13: Cassette 7-34 Service Manual...
Page 293 5055-01x Asm- Part Index Number 13 - 1 56P9500 56P9761 56P9754 56P9755 56P9753 56P9763 56P9764 56P9757 56P9758 56P9759 11G0284 56P9760 56P9756 11G0118 56P9762 11G0385 11G0120 Units Description Cassette, Paper Feed Pawl, Rear Plate, Right Rear Location Spring, Location Plate Plate, Left Rear Location Spring, A Push Up Spring, B Push Up Locator, Front Side...
Page 294: Assembly 14: Expansion Feeder 1
5055-01x Assembly 14: Expansion Feeder 1 7-36 Service Manual...
Page 295 5055-01x Asm- Part Index Number 14 - 1 56P9780 56P9773 56P9771 11G0422 56P9772 11G0423 56P9770 56P9769 56P9767 56P9765 56P9504 56P9524 56P9503 56P9505 11G0399 56P9766 56P9522 56P9521 56P9779 56P9768 56P9776 56P9778 56P9777 56P9774 56P9775 Units Description Guide, Wire Gear, Feeder E Gear, Feeder C Gear, Feeder B Gear, Feeder D...
Page 296: Assembly 15: Expansion Feeder 2
5055-01x Assembly 15: Expansion Feeder 2 7-38 Service Manual...
Page 297 5055-01x Asm- Part Index Number 15 - 1 56P9796 56P9514 56P9513 56P9509 56P9790 56P9792 56P9791 56P9794 56P9789 56P9517 56P9519 56P9516 56P9518 56P9515 11G0563 56P9786 56P9784 56P9787 56P9785 56P9788 56P9795 11G0219 56P9510 56P9782 56P9783 56P9781 56P9511 56P9506 56P9508 11G0291 56P9797 11G0297 56P9793 56P9507 Units...
Page 298: Assembly 16: Duplex Unit 1
5055-01x Assembly 16: Duplex Unit 1 7-40 Service Manual...
Page 299 5055-01x Asm- Part Index Number 16 - 1 56P9798 56P9804 56P9799 56P9800 56P9803 56P9525 56P9806 56P9807 56P9805 Units Description Duplex Assembly Board, Duplex Interface Frame, Duplex Screw, Duplex Mounting Motor, Duplex Stepping Interrupter, Photo Cable Assembly, Paper Detection Cable Assembly, Duplex Interface Cable Assembly, Duplex Connection 7-41 Parts Catalog...
Page 300: Assembly 17: Duplex Unit 2
5055-01x Assembly 17: Duplex Unit 2 7-42 Service Manual...
Page 301 5055-01x Asm- Part Index Number 17 - 1 56P9825 56P9827 56P9826 56P9830 56P9814 56P9816 56P9813 56P9525 56P9828 56P9808 56P9526 56P9815 56P9829 56P9831 56P9810 56P9527 56P9817 56P9818 56P9819 56P9822 56P9823 56P9821 56P9820 56P9809 56P9824 56P9811 56P9812 56P9832 Units Description Plate, Paper Re-Feed Drawer Guide, Rear Side Guide, Front Side Solenoid Assembly, Paper Re-feed...
Page 302: Assembly 18: High Capacity Paper Feed 1
5055-01x Assembly 18: High Capacity Paper Feed 1 7-44 Service Manual...
Page 303 5055-01x Asm- Part Index Number 18 - 1 56P9838 56P9835 56P9837 56P9834 56P9843 56P9839 56P9833 56P9836 56P9940 56P9841 56P9840 56P9842 Units Description Catch, Door Magnet, Latch Cover, Upper Cover, Upper Rear Cover, Lower Rear Cover, Right Cover, Front Fence, End Ring, Snap Cover Assembly, Upper Lever, Vertical Transport...
Page 304: Assembly 19: High Capacity Paper Feed 2
5055-01x Assembly 19: High Capacity Paper Feed 2 7-46 Service Manual...
Page 305 5055-01x Asm- Part Index Number 19 - 1 56P9846 56P9848 56P9844 56P9941 56P9501 56P9528 56P9849 56P9850 56P9852 56P9851 56P9847 56P9845 Units Description Solenoid Assembly, Paper Pickup Clutch, Paper Feed Motor Assembly, Transport Arm, Pick-up Spring, Pressure Interrupter, Photo Roller, Manual Feed Pickup Roller, Manual Feed Limiter, Torque Roller, Manual Feed Separate...
Page 306: Assembly 20: High Capacity Paper Feed 3
5055-01x Assembly 20: High Capacity Paper Feed 3 7-48 Service Manual...
Page 307 5055-01x Asm- Part Index Number 20 - 1 56P9854 56P9855 56P9529 56P9856 56P9857 56P9530 56P9859 56P9858 56P9853 Units Description Sensor Assembly, Photo Interrupter, Photo Caster, HCPF Spring, Tension Switch, Micro Switch, Push Connector, Inlet Connector, I/F Screw, Shoulder 7-49 Parts Catalog...
Page 308: Assembly 21: High Capacity Paper Feed 4
5055-01x Assembly 21: High Capacity Paper Feed 4 7-50 Service Manual...
Page 309 5055-01x Asm- Part Index Number 21 - 1 56P9541 56P9875 56P9865 56P9871 56P9866 56P9880 56P9879 56P9878 56P9877 56P9876 56P9868 56P9873 56P9872 56P9874 56P9870 56P9869 56P9867 56P9861 56P9864 56P9530 56P9862 56P9863 Units Description Sensor, Resistor Cable Assembly, Safety Switch Cable Assembly, HCPF Motor Cable Assembly, I/F Cable Assembly, Paper Feed Sensor Cable, Up/Down Switch...
Page 310: Assembly 22: High Capacity Paper Feed 5
5055-01x Assembly 22: High Capacity Paper Feed 5 7-52 Service Manual...
Page 311 5055-01x Asm- Part Index Number 22 - 1 56P9883 56P9528 56P9888 56P9884 56P9886 56P9885 56P9882 56P9887 Units Description Spring, Pressure Interrupter, Photo Bracket, Rear Idler Belt, Timing Gear, Drive Pulley, Timing Motor, HCPF DC Bracket, Front Idler 7-53 Parts Catalog...
Page 312: Assembly 23: High Capacity Paper Feed 6
5055-01x Assembly 23: High Capacity Paper Feed 6 7-54 Service Manual...
Page 313 5055-01x Asm- Part Index Number 23 - 1 56P9892 56P9893 56P9891 56P9890 56P9915 56P9894 56P9528 56P9889 Units Description Plate, Upper Side Fence Knob Knob, Tray Plate, Paper Adhesion Fence Assembly, Front Side Fence Assembly, Rear Side Interrupter, Photo Pad, Friction 7-55 Parts Catalog...
Page 314 5055-01x 7-56 Service Manual...
Page 315 5-10 size sensor board 3-20 Defaults 3-17 Device Tests Diagnostic Aids Diagnostic Information Diagnostic Mode Diagnostics - Printer Setup 5-14 Driving Parts Layout Electrical Parts Layout 3-25 Error Log Exiting Diagnostics Mode General Information Handling Printed Circuit Boards Hardware Tests...
Page 316 7-28 I/F controller 7-12 upper unit Periodic Maintenance POST Power-On Self-Test Sequence Preventive Maintenance Print Quality Pages Print Quality Problems Printer Messages Printing Menu Settings Service Manual 2-47 Removals belt up/down clutch 2-48 belt up/down detection sensor cassette guide 2-48...
Page 317 4-48 4-43 power supply 1 4-44 power supply 2 4-46 power switch 4-37 printer controller printhead controller board 4-39 R sub frame registration clutch registration frame 4-77 registration sensor right slide rail 4-79...
Page 318 5055-01x 3-10 Test Tests 3-10 button 3-17 device 3-18 disk test/clean 3-11 DRAM memory 3-19 flash 3-10 hardware input source print 3-10 LCD hardware 3-13 parallel wrap print print quality pages 3-17 quick disk 3-12 ROM memory 3-15 serial wrap Theory 1-15 belt unit...
Page 319: Index
5055-01x Part Numbers 7-27 11D0328 7-27 11D0329 7-27 11D0330 7-27 11D0331 7-27 11D0332 7-27 11D0333 7-27 11D0334 7-27 11D0335 7-27 11D0336 7-27 11D0337 7-11 11G0117 7-11, 7-35 11G0118 7-11, 7-35 11G0120 11G0135 7-7, 7-23, 7-39 11G0219 7-5, 7-17, 7-23, 7-25 11G0243 7-23 11G0283...
Page 320 5055-01x 56P9549 56P9550 56P9551 56P9554 56P9555 56P9556 56P9557 56P9558 56P9559 56P9560 56P9561 56P9562 56P9563 56P9564 56P9565 56P9566 56P9567 56P9568 56P9569 56P9570 56P9571 56P9572 56P9573 56P9574 56P9575 56P9576 56P9577 56P9578 56P9579 56P9580 56P9581 56P9582 56P9583 56P9584 7-11 56P9587 7-11 56P9588 7-11 56P9589 7-11 56P9590...
Page 321 5055-01x 7-19 56P9655 7-19 56P9656 7-19 56P9657 7-19 56P9658 7-17 56P9659 7-17 56P9660 7-19 56P9661 7-19 56P9662 7-17 56P9663 7-17 56P9664 7-17 56P9665 7-21 56P9666 7-21 56P9667 7-21 56P9668 7-21 56P9669 7-21 56P9670 7-21 56P9671 7-21 56P9672 7-21 56P9673 7-23 56P9674 7-23 56P9675...
Page 322 5055-01x 7-35 56P9754 7-35 56P9755 7-35 56P9756 7-35 56P9757 7-35 56P9758 7-35 56P9759 7-35 56P9760 7-35 56P9761 7-35 56P9762 7-35 56P9763 7-35 56P9764 7-37 56P9765 7-37 56P9766 7-37 56P9767 7-37 56P9768 7-37 56P9769 7-37 56P9770 7-37 56P9771 7-37 56P9772 7-37 56P9773 7-37 56P9774...
Page 323 5055-01x 7-47 56P9850 7-47 56P9851 7-47 56P9852 7-49 56P9853 7-49 56P9854 7-49 56P9855 7-49 56P9856 7-49 56P9857 7-49 56P9858 7-49 56P9859 7-51 56P9861 7-51 56P9862 7-51 56P9863 7-51 56P9864 7-51 56P9865 7-51 56P9866 7-51 56P9867 7-51 56P9868 7-51 56P9869 7-51 56P9870 7-51 56P9871...
Page 324 5055-01x I-10 Service Manual...

This manual is also suitable for:

C910

Lexmark C910 5055-01x Service Manual

Safety Information

General Information

5055-01X

Diagnostic Information

Diagnostic Aids

5055-01X

Repair Information

5055-01X

5055-01X

Locations

Preventive Maintenance

5055-01X

Parts Catalog

Index

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Summary of Contents for Lexmark C910 5055-01x