Page 1 C910 Color Printer 5055-01X • Table of Contents • Start Diagnostics • Safety and Notices • Trademarks • Index 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 are trademarks of Lexmark International, Inc., registered in the United States and/or other countries.
Page 3: Table Of Contents
Labels..........1-21 Lexmark Glossy Paper....... . 1-21 Print Area .
Page 4 5055-01X Operating Clearances ....... . .1-26 Environment ........1-27 Physical Specifications and Weight.
Page 5 5055-01X Diagnostic Information ....... . . 2-1 Adjustments and Procedures Following Parts Replacement ..2-1 Start .
Page 6 5055-01X Diagnostics - Printer Setup ......3-24 Defaults ..........3-24 Viewing and Resetting the Drum Counters .
Page 7 5055-01X Paper Carrying Frame Removal ......4-28 Paper Carrying Roller (Upper) Removal ....4-28 Paper Carrying Clutch Removal.
Page 8 5055-01X Expansion Paper Feeder Removal ..... . .4-63 Duplex Removals ........4-71 Duplex Unit Separation Removal .
Page 9 5055-01X Sensor and Switch Locations......5-4 Component Locations ....... . . 5-6 Printer Controller Board .
Page 10 5055-01X Assembly 17: Duplex Unit 2 ......7-42 Assembly 18: High Capacity Feeder 1 ....7-44 Assembly 19: High Capacity Feeder 2 .
Page 11: 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 12 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 13 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 14 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 15 5055-01X Safety Information...
Page 16 5055-01X Service Manual...
Page 17: General Information
1 x 550-sheet option Duplex Hard Disk Option Staple Punch Finisher w/Stand Printer Cabinet Overview The Lexmark C910 is a high-speed, wide-format color LED Electrophotographic color printer with superior print quality for high- volume printing. Resolution • 600 x 600 dpi •...
Page 18: Toner Darkness
Black and White Lock - (in configuration menu) allows printer and network administrators to lock the Lexmark C910 printer in a mode that will only print black. This feature cannot be overridden with any other menu or driver selection.
Page 19 5055-01X Options High Capacity 24.8 in. 28.6 in. 32.3 in. 75.7 lb. Feeder (630 mm) (726 mm) (820 mm) (34.4 kg) Duplex Unit 27.6 in. 20.5 in. 10.6 in. 18.7 lb. (700 mm) (520 mm) (270 mm) (8.5 kg) Optional Drawer 28.5 in.
Page 20: Print Speed And Performance
5055-01X Print Speed and Performance Print Speed Standard and High Multipurpose Heavy Media Capacity Feeder Tray Feeder Simplex printing on letter-size media (pages per minute) Letter - 8.5 in. x 11 in. Ledger Legal - 8.5 in. x 14 in. A4 - 3.4 in.
Page 21: Time To First Print
(2,4,6,1,3,5...) The first two sides (2 and 4) are not included in the performance computation since they “seed” the printer system’s paper path to achieve the maximum duplex print performance. Performance The Lexmark C910 printers support the speeds listed above. Performance depends on • Interface to the host (USB, serial, parallel, network) •...
Page 22: Processor
On-board hard disk interface (for optional hard disk): 1 SDRAM and flash memory options are interchangeable within any of the memory slots available on the Lexmark C910 system board. However, only one flash memory Maintenance Approach option will Service Manual...
Page 23: Paper Handling
Capacity may vary and is subject to media specifications and printer operating environment. Capacities listed are based on plain paper at 75g/m Input and Output Configurations Lexmark Lexmark Lexmark Sources and Capacities C910 C910n C910dn Input Sources Number of standard sources Optional input drawers High Capacity Feeder...
Page 24 5055-01X Lexmark Lexmark Lexmark Sources and Capacities C910 C910n C910dn Maximum additional drawers Maximum input capacity 2,300 2,300 2,300 (without high capacity feeder Maximum input capacity + 5,300 5,300 5,300 high capacity feeder Output Destination Number (standard) Output Capacities sheets...
Page 25: Media Size Supported
5055-01X Media Size Supported Input 500- Multi- High Hevay sheet purpose Capacity Duplex Media Input Feeder Feeder Tray A4-8.27” x 11.7” (210 mm x 297 A5-5.83” x 8.27” (148 mm x 210 JIS-B5-7.17” x 10.23” (182 mm x 257mm) JIS-B4-14.34” x 10.1”...
Page 26 5055-01X 500- Multi- High Hevay sheet purpose Capacity Duplex Media Input Feeder Feeder Tray Universal 2.75 x 5 in. to 8.5 x 14in. (69.85 x 127 mm to 229 x 355.6 mm) 5.83 x 7.17 in to 8.5 x 14 in. (148 x 182 mm to 215.9 x 355.6 7 3/4 Envelope-...
Page 27 5055-01X 500- Multi- High Hevay sheet purpose Capacity Duplex Media Input Feeder Feeder Tray Other Envelope 11.69 x 11.69 in. (297 mm to 297 Media Type Paper Card Stock Transparencies Envelopes Glossy Paper Paper Labels 1-11 General Information...
Page 28 5055-01X Output Standard Finisher Finisher Bin 1 Output Bin 1 Bin 2 A4-8.27” x 11.7” (210 mm x 297 A5-5.83” x 8.27” (148 mm x 210 JIS-B5-7.17” x 10.23” (182 mm x 257mm) JIS-B4-14.34” x 10.1” (364 mm x 252 mm) Letter-8.5”...
Page 29 5055-01X Standard Finisher Finisher Bin 1 Output Bin 1 Bin 2 Universal 2.75 x 5 in. to 8.5 x 14in. (69.85 x 127 mm to 229 x 355.6 mm) 5.83 x 7.17 in to 8.5 x 14 in. (148 x 182 mm to 215.9 x 355.6 7 3/4 Envelope- 3.875”...
Page 30 Narrow media should be loaded with the length in the feed direction (portrait). A5 paper 5.83 x 8.27 in. (148 x 210 mm) is the smallest size the C910 can duplex When Other Envelope is selected, the page is formatted for 8.5 x 14 in.
Page 31: Input Media Types And Weights
5055-01X Input Media Types and Weights Media Weight 1, 2, 3 Standard Trays Paper Xerographic or business 16 to 28 lb. bond (60 to 105 g/m paper Specialty papers Glossy laser 80 lb. book (32 lb. bond) (120 g/m Heavy Media Tray1 Paper 28 to 47 lb.
Page 32: Output Media Types And Weights
5055-01X Media Weight 105 g/m2 (28 lb. bond) envelopes are limited to 25% cotton content Part numbers 12A5950 (letter) and 12A5951 (A4) Part numbers 12A5940 (letter) and 12A5941 (A4) Refer to Cardstock & Label Guide for media guidelines Output Media Types and Weights Media Weight Standard Output...
Page 33 5055-01X Media Weight 6,7,8 Envelopes 20 to 28 lb. bond Sulfite, Wood-free - up to 100% cotton (75 to 105 g/m Finisher Bin 1 Paper 16 to 28 lb. bond (60 to 105 g/m Xerographic or business paper Specialty papers 80 lb.
Page 34: Input Capacity By Media And Source
5055-01X Input Capacity by Media and Source Media Stack Height Capacity 500-Sheet Trays Plain Paper (letter, 2.2 in. (56 mm) 550 sheets A4, legal, tabloid, A3) 20 lb. (75 g/m Plain Paper (letter, 1 in. (25 mm) 240 sheets A4, legal, tabloid, A3) 24 lb.
Page 35: Output Capacity By Media And Source
5055-01X Output Capacity by Media and Source Media Stack Heights Capacity Standard Output Bin Plain Paper Varies 550 sheets 20 lb. (75 g/m Glossy Paper Varies 130 sheets 32 lb. (120 g/m Bin 1 and Staple Punch Finisher Bin 1 Plain Paper Varies 100 sheets...
Page 36: Envelopes
5055-01X process used in preprinting may render some papers unsuitable. • Unsuitable papers include multipart forms and documents; chemically treated papers; coated, synthetic and thermal papers; and preprinted papers requiring a high degree of registration. • Recycled paper less than 21 lb. (80 g/m ) may cause unacceptable results.
Page 37: Labels
To within 0.16 in. (4.2 mm) of all edges of the media (except envelopes) Options and Features Lexmark C910 printers support only Lexmark C910 paper-handling options. These options are not compatible with any other Lexmark printer. • 550-Sheet Drawer - (includes 550-sheet tray and support unit) installs beneath the printer and holds approximately 550 sheets of 20 lb.
Page 38: Connectivity
Each C910 can support one Finisher. • C910 Printer Cabinet - is customer installable and attaches below the printer - printer sits on top of the printer stand. The printer cabinet raises the printer to the correct height for use with the optional finisher and high-capacity feeder.
Page 39: Network Connections
Lexmark MarkNet N2000 Series Internal Print Servers – MarkNet N2000t for Token-Ring attachment – MarkNet N2001e for Ethernet 10BaseT/100BaseTX – MarkNet N2002e for Ethernet 10BaseT/10Base2 • Lexmark MarkNet N2003 Series Internal Fiber Print Servers, including: – MarkNet N2003fx SC – MarkNet N2003fx MTRJ External Network Connections •...
Page 40: Data Streams
Data Streams • PostScript® 3 Emulation • Hewlett-Packard Company PCL® 6 Emulation Operating Systems The Lexmark C910 printers are compatible with applications running under the following operating systems for either local or network connections Resident Fonts Emulation Scalable Fonts Bitmapped Fonts...
Page 41: Power And Electrical Specifications
Font cards and font cartridges are not supported. Power and Electrical Specifications Power Requirements Average nominal power requirements for the base printer configuration (110 volt). Power level are shown in watts. Lexmark Printing C910(n)[dn] Lexmark States Lexmark with High C910(n)[dn] (average C910(n)[dn]...
Page 42: Operating Clearances
120 to 240 VAC at 50 to 60 hertz (hz) nominal Operating Clearances • Left side: 13 in. (330 mm)* • Right side: – C910(n) 6 in. (152 mm)**, *** – C910dn 13 in. (330 mm)**, *** • Front: 26 in. (660 mm) •...
Page 43: Environment
5055-01X Environment • Printer Temperature and Humidity – Operating - Temperature: 60 to 90 F (15.6 to 32.3 - Relative Humidity: 8 to 80% - Maximum Wet Bulb Temperature: 73 F (22.8 - Altitude: 10,000 ft. (0 to 3,048 meters) - Atmospheric Pressure: 74.6 kPa –...
Page 44: Physical Specifications And Weight
In some cases, performance specifications (such as paper OCF, EP cartridge usage) are specified to be measured at an ambient condition. Physical Specifications and Weight Width Depth Height Weight Printers Lexmark C910 27.4in 25.8 in. 20.2 in. 177.1 lb. (695 mm) (655 mm) (512 mm) (80.5 kg) Lexmark C910n 27.4 in.
Page 45: Maintenance Approach
5055-01X Width Depth Height Weight Staple Punch 19.5 in. 20.5 in. 41.7 in 48.6 lb. Finisher, 1,100 (495 mm) (520 mm) (1,060 (22 kg) Sheet (with stand) Furniture Printer Cabinet 26.6 in. 23.6 in. 20.4 in. 57.5 lb. (675 mm) (598 mm) (517 mm) (26 kg)
Page 46: Return Parts
5055-01X • Inspect and, if necessary, clean all rubber/plastic and D rollers with A lint-free cloth, dampened slightly with cold water. Dry the rollers with a lint-free cloth. • While cleaning, inspect the interior of the printer for damaged wires, loose connections, toner leakage, loose springs, and damaged or worn parts.
Page 47: Tools
5055-01X Tools The removal and adjustment procedures require the following tools and equipment: • Magnetic tip Phillips screwdrivers, large and small • Flat-blade screwdrivers • Analog volt ohmmeter (a digital volt ohmmeter may also be used) • Needle nose pliers •...
Page 48: 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. 1-32 Service Manual...
Page 49: Abbreviations
5055-01X Abbreviations ASIC Application-Specific Integrated Circuit 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 Local Area Network LASER Light Amplification by Stimulated Emission of Radiation Liquid Crystal Display Light-Emitting Diode...
Page 50: Processes And Configuration
5055-01X Processes and Configuration In this printer, the toner of four colors (magenta, cyan, yellow and black) melts and deposits dots on paper, 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 51: 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 52: 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 53: Drive System
5055-01X Drive System Drive 1, composed of a 100 V dc motor and gear unit, feeds the registration paper from the paper feeder and drives the belt unit, photodevelopers / 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 54: Paper Feeding
5055-01X Paper Feeding The paper feeder is a two-way system composed of the multi-paper feeder (100 sheets maximum) and an integrated 550 sheet tray). Optionally, the expansion paper feeders (550 sheets) can be increased to four layers. A high capacity paper feeding system (3,000 sheets) may be used.
Page 55: Multipurpose Feeding
5055-01X Multipurpose Feeding The multipaper feed solenoid turns on by the signal from the printer controller. The multipurpose feed roll interconnected with the drive 1 through the spring clutch, rotates and picks the paper in the multipurpose feeder. MPF Clutch 1-39 General Information...
Page 56: 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 57: Separation Unit
5055-01X Separation Unit The transfer belt and paper are separated with the belt drive roll by separation fingers. Drive Roll Paper Separation Fingers 1-41 General Information...
Page 58: Fuser Unit
5055-01X Fuser Unit By applying heat and pressure, the image is melted and fused to the paper. The upper and lower rollers are heated and pressure-fitted. A heater is positioned in the roller tube and a thermistor and thermostat remain in contact with the outside of the tube. Separation fingers are attached near the upper roller to separate the paper from the roller.
Page 59: Delivery
5055-01X Delivery After completing the fusing process, paper is discharged from the printer. The delivery sensor detects the paper condition and the FU/FD deflector switches between the face-up and face-down paper delivery. The paper from the fuser pulls down the sensing lever turning on the delivery sensor (photo interrupter).
Page 60: 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 61: 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 62: Duplex Unit
5055-01X Duplex Unit A duplex unit can be optionally installed in the main unit, allowing two-sided printing. Selecting Paper feeding, Registration, Transfer, Separation, Fusing, or Face-Down paper discharging with the pulse motor in the duplex unit, feeding is stopped before the paper is delivered. Paper delivery is then reversed and fed to the duplex unit.
Page 63: Paper Weight
5055-01X Paper Weight Purpose: To identify the relative weight of the paper loaded in a specific source and ensure that the toner adheres properly to the printed page. Values: Plain Weight Preprint Weight Bond Weight Labels Weight CardStock Colored Weight Envelope Weight Ltrhead Weight Weight...
Page 64: Clearing Paper Jams
5055-01X Clearing Paper Jams 200 Paper Jam <x> Pages Jammed (Check Areas A-F) A 200 Paper Jam message indicates that paper is jammed. The display alternates between 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.
Page 65 5055-01X Check Areas A, B This message indicates a paper jam in the transfer belt, fuser, or output roller area. To clear areas A, B: 1. Open the top cover. Never touch the photodevelopers drum on the underside of the toner cartridge. The paper may be covered with un-fused toner, which can stain clothing.
Page 66 5055-01X Check Area D This message indicates a paper jam in the duplex unit area. To clear area D: 1. Open the duplex jam access door on the right side of the printer. 2. Gently pull out the duplex unit. 3.
Page 67 5055-01X Removing Small Size Paper From the Duplex Unit 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.
Page 68 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 69 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. 200 Paper Jam (Check Areas G, H, I) A 200 Paper Jam indicates a jam has occurred in the finisher.
Page 70: High Capacity Feeder (Hcf)
5055-01X High Capacity Feeder (HCF) Paper Feed and Separation Mechanism The high capacity feeder consists of a tray and paper transfer mechanisms. 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 71 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 72 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 73 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 74 5055-01X Tray Up Condition Tray up motion stops when the: • Up sensor is OFF (not shielded) • Power cord is connected and the joint switch 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 75 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 76 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 77 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. 1-61 General Information...
Page 78: Maintenance Mode
5055-01X Maintenance Mode DIP Switch Specifications The DIP switches on the high capacity paper feed board have the following functions: • Function switching and initial setting of the standard machine or optional machine. Function Switch Maintenance Switch Description Switch 1 Standard machine initial setting 2 Optional machine initial setting...
Page 79 5055-01X • 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.
Page 80: High Capacity Paper Feed Sensor / Switch Test
5055-01X High Capacity Paper Feed Sensor / Switch Test Check the condition of each sensor 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- capacity paper feed board.
Page 81: Finisher
5055-01X Finisher The 5055-01X finisher communicates with the host engine through serial interface signals and performs the following operating modes: • Straight - exits paper to the upper tray. • Punch and straight - stops paper at the leading edge, punches it, and exits it to the upper tray.
Page 82 5055-01X 1-66 Service Manual...
Page 83 5055-01X 1-67 General Information...
Page 84 5055-01X Finisher Cross Section Straight Exit Idle Roller Paddle Roller Upper Tray Path Select Gate Straight Exit Roller Register Idle Invert Exit Roller Idle Roller Input Paper Guide Lower Tray Invert Exit Roller Register Roller Accumulator Stapler Unit 1-68 Service Manual...
Page 85 5055-01X Electrical Parts Function • Finisher Set Switch - detects the connection with the printer. • Staple Cartridge Set Switch - detects when the staple cartridge is open. • Staple Existence Sensor - detects when the stapler is empty. • Staple Home Position Sensor - locates home position for stapling.
Page 86 5055-01X Paper Feed Mechanism Paper is transported, after it is detected at paper register sensor by drive gears and drive belts, driven by the paper feed motor or tractor drive motor and other rollers. Paper path route differs subject to the selected mode.
Page 87 5055-01X Path Select Gate 1-71 General Information...
Page 88 5055-01X Inverting Paper Path (Exit paper to lower tray through accumulator) The paper feed motor drives and rotates the rollers as paper feeds through the registration rollers, path select gate, and patting rollers. Paper is detected by the invert path sensor. Paper is then jogged by jogging bar and driven by the belt drive motor before exiting to the lower tray (accumulator) Path Select Gate...
Page 89 5055-01X Accumulator 1-73 General Information...
Page 90 5055-01X Paper Registration Sequence Paper is stopped at the hole punching position momentarily before the paper standstill clutch turns ON and changes to open. At this point the driving force cannot be transmitted to the register rollers. The paper then stops at register rollers, and since the finisher keeps feeding the paper from the host printer, the leading edge of the paper stops at the register rollers.
Page 91 5055-01X Punch Unit Driving Sequence When the paper feed motor drives, the driving force is transmitted through punch unit drive gear to the clutch gears of the punch unit. Since the punch clutch is normally opened OFF, the driving force is not transmitted to the driving shaft.
Page 92 5055-01X Jogging / Offset Mechanism Jogging Sequence Each sheet, upon entering the accumulator, is aligned by the jogging bar which moves the sheet horizontally until the edge of the sheet contacts the registration plate. The paper detecting sensor detects the paper position for stapling. Offsetting Sequence Sheets of jogged paper are offset by the horizontal movement of the jogging bar.
Page 93 5055-01X Detection of Fixed Position The fixed position of the jogging bar is detected by the jogging home position sensor and a sensor flag united with the pinion. The fixed position is set when the sensor detects the sensor flag. This fixed position is used as a reference point to calculate the distance of the movement of the jogging bar and offset bar depending on paper size.
Page 94 5055-01X Elevator Sequence The wire drum rotates by the elevator motor as the wire drum rolls the wire pulling the hook plate up and down. The lower tray moves up by the driving force of the elevator motor until the elevator upper limit sensor is ON, the paper feeds onto the Tray, or until the paper upper level sensor B is ON if no paper feeds onto the Tray.
Page 95: Finisher Installation
5055-01X Finisher Installation Attaching the Docking Plate and Guide Rail 1. Lift the printer exit tray halfway and remove. You will need the tray when the finisher is attached. 2. Insert the docking plate tabs into the printer. 3. Align the thumbscrews on the docking plate with the holes in the side of the printer.
Page 96 5055-01X 6. Tighten the guide rail plate thumbscrews. 7. Align the thumbscrews on the guide rail with the holes in the guide rail plate. 8. Tighten the guide rail thumbscrews. 1-80 Service Manual...
Page 97: Combining The Finisher And Stand
5055-01X Combining the Finisher and Stand 1. Roll the finisher stand onto the guide rail. Do not push the stand all the way up against the printer. 2. Remove and discard all shipping tape, packing material, and the metal shipping bracket. Caution: The finisher weighs 19.7 kg (42.2 lbs).
Page 98 5055-01X 4. Remove all shipping tape and packing material. 5. Lift the stapler locking lever. 6. Raise the stapler. 7. Remove all shipping tape and packing material. 1-82 Service Manual...
Page 99 5055-01X 8. Close the stapler. 9. Close the stapler door. 10. Align the two sockets on the bottom of the finisher with the legs of the finisher stand. 1-83 General Information...
Page 100 5055-01X 11.Lower the finisher onto the finisher stand. Caution: When assembled, the finisher weighs 26.3 kg (56.9lbs) and requires at least two people to lift it safely. 12.Remove both thumbscrew spacers. 13.Tighten the two thumbscrews. 1-84 Service Manual...
Page 101: Attaching The Bins
5055-01X Attaching the Bins 1. Align the slots on bin 2 with the metal brackets on the rear of the finisher. 2. Slide the bin down onto the metal brackets until it is fully seated. Note: When assembled, the finisher and finisher stand are referred to as the finisher.
Page 102: Aligning The Finisher And Printer
5055-01X Aligning the Finisher and Printer The following three areas must align properly to prevent paper jams. 1. The docking plate pins must enter the holes in the finisher. 2. The space between the printer and finisher must be the same at the top and bottom of the finisher.
Page 103 5055-01X 4. Roll the finisher toward the printer until the finisher locks to the docking plate pins. You hear a click when the finisher locks into position., If the pins did not go into the holes in the finisher, go to “Lowering or Raising the Finisher”...
Page 104 5055-01X Lowering or Raising the Finisher Follow these instructions if the holes on the finisher are above or below the pins on the docking plate. 1. Determine if the pins are above or below the holes in the finisher. 2. Loosen the guide rail thumbscrews. 1-88 Service Manual...
Page 105 5055-01X 3. Rotate the adjustment knobs as needed to align the holes in the finisher with the pins. To raise the finisher, rotate the adjustment knobs clockwise. To lower the finisher, rotate the adjustment knobs counterclockwise. 4. Roll the finisher toward the printer until the finisher locks to the docking plate pins.
Page 106 5055-01X Aligning the Sides of the Finisher Follow these instructions if the distance between the finisher and printer is not the same at the top and bottom. 1. Loosen the guide rail thumbscrews. 1-90 Service Manual...
Page 107 5055-01X If you previously lowered or raised the guide rail plate, the thumbscrews are already loose. 2. Rotate the rear adjustment knobs to equally align the top and bottom of the finisher with the printer. To move the top of the finisher closer to the printer, rotate the adjustment knobs clockwise.
Page 108 5055-01X 3. Roll the finisher toward the printer until the finisher locks to the docking plate pins. You hear a click when the finisher locks into position. Aligning the Top of the Finisher Note: Anytime you move the printer or finisher, recheck the printer and finisher top alignment.
Page 109: Adjusting The Wheels
5055-01X You hear a click when the finisher locks into position. Adjusting the Wheels Adjust the wheels on the end of the finisher so the stand remains aligned when moved. To adjust and lock the wheels: 1. Rotate the left and right upper adjustment knobs on the rear wheels until the wheels touch the floor.
Page 110 5055-01X To lower the wheels, rotate the adjustment knobs clockwise. 2. Turn the wheels until the locking knobs are aligned with the finisher base. 3. Rotate the locking knobs counterclockwise until they contact the finisher base. 1-94 Service Manual...
Page 111: Attaching The Cables
5055-01X Attaching the Cables The finisher comes with an interface cable and Y-power cord. The interface cable connects the finisher to the printer, and the Y-power cord provides electrical power to the finisher and printer. 1. Turn the printer off. 2.
Page 112 5055-01X Interface Cable Caution: Make sure the printer is turned off before continuing. 1. Plug the interface cable into the bottom connector on the back of the printer. 2. Tighten the thumbscrews. 3. Plug the interface cable into the connector on the side of the finisher.
Page 113 5055-01X Power Cable 1. Unplug the power cord from the side of the printer. Set the cord aside. 2. Plug the straight Y-power cord connector into the socket on the side of the finisher. 3. Plug the angled connector of the Y-power cord into the socket on the side of the printer.
Page 114 5055-01X 4. Connect the previously removed printer power cord to the Y- power cord. 5. Remove the protective paper from the back of the cable holder. 6. Firmly press the adhesive-backed cable holder onto the back of the top optional drawer. 7.
Page 115: Hole Punch Adjustment
5055-01X 8. Close the cable holder. 9. Turn the printer on. The finisher does not have a power switch. Power is controlled by the printer. Hole Punch Adjustment You can adjust the hole punch alignment by approximately 4 mm (3/ 16 in.).
Page 116 5055-01X 3. Determine if the edge of the bottom of the page is below or above the top edge of the page. 4. Loosen the guide rail thumbscrews. Note: Do not move the adjustment knobs more than three complete turns from their starting position. Adjustments greater than three turns may cause paper jams.
Page 117: Diagnostic Information
5055-01X 2. Diagnostic Information The diagnostic information in this chapter leads you to the failing part. Before you replace an entire assembly, determine if just the defective part is available in the parts catalog. Use the error code tables, symptom table, service checks and the diagnostic aids chapter to determine the symptom and repair the failure.
Page 118 5055-01X Printer Controller Board/Printer Control EPROM (U5) If you replace the printer controller board, remove EPROM (U5) and install it on the new board. Also check the printhead alignment. If you change the EPROM, record and input the following items using the diagnostic mode following EPROM replacement.
Page 119: Start
5055-01X Start Initial Check Before you start troubleshooting, check the following: Installation Environment • The power supply line voltage is plus or minus 10% of the rated line voltage. • The machine is securely installed on a level surface in a well- ventilated place.
Page 120: Printer Messages
5055-01X Printer Messages The printer displays three types of messages: service messages, status messages, and attendance 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 121: Paper Exit Motor Error
5055-01X 911 - Paper Exit Motor Error Questions / Step Actions Is connector CN4 on Replace the Plug the the printer controller paper exit connector in board securely motor and go to securely. connected? step 2. Did replacement of the Problem solved.
Page 122: Rip Fan Error
5055-01X 917 - RIP Fan Error 917 Service Fan Error Step Questions / Actions Is connector J5 on the Properly Go to step 2. RIP board connected connect J5. properly? Is 24 V dc present Replace the RIP Go to step 3. between pins 1 and 3 of fan.
Page 123: Power Supply Fan Error
5055-01X 919 - Power Supply Fan Error Step Questions / Actions Is +24 V present between Replace the power Replace the pins 1 and 3 of connector supply fan. printer CN6 on the printer controller controller board? board. 920 - Fuser Error - Fuser Heater Trouble 92x Service Fuser Error Questions /...
Page 124: Upper Fuser Thermistor Open Error
5055-01X 923 - Upper Fuser Thermistor Open Error Questions / Step Actions Is connector CN44 Disconnect CN44 Plug the connector in on the printer and turn the printer securely. controller board connected Go to step 2. properly? Is error 923 Power off and Replace the printer displayed?
Page 125: Hvu Error
5055-01X Questions / Step Actions Power the printer Replace the fuser. Replace the printer off and short pins controller board. 8 and 11 of CN44 and turn the printer on. Is error 924 displayed? 925 - HVU Error Questions / Step Actions Is connector CN42...
Page 126 5055-01X 926(K), 927(C), 928(Y), 929(M) - Toner Sensor Error 92x Service Toner Sensor Questions / Step Actions Is the toner cartridge Go to step 2. Recommend the the correct type for customer replace the printer? the cartridge with the correct type. Is the toner cartridge Clean the encoder Go to step 3.
Page 127: Yellow Printhead Error
5055-01X 930 - Yellow Printhead Error 930 Service Printhead Error Questions / Step Actions Check to ensure that Go to step 2. Properly connect the cables between the cables. the LED printhead and the printhead controller board as well as the cables between the printhead controller board and the...
Page 128: Magenta Printhead Error
5055-01X 931 - Magenta Printhead Error Questions / Step Actions Check to ensure Go to step 2. Properly connect the that the cables cables. between the LED printhead and the printhead controller board as well as the cables between the printhead controller board and the printer...
Page 129: Cyan Printhead Error
5055-01X 932 - Cyan Printhead Error Questions / Step Actions Check to ensure Go to step 2. Properly connect the that the cables cables. between the LED printhead and the printhead controller board as well as the cables between the printhead controller board and the printer...
Page 130: Black Printhead Error
5055-01X 933 - Black Printhead Error Questions / Step Actions Check to ensure that Go to step 2. Properly connect the cables between the cables. the LED printhead and the printhead controller board as well as the cables between the printhead controller board and the printer controller board are...
Page 131: Black Drum Sensor Error
5055-01X Questions / Step Actions Did replacing the Problem solved. Replace the color drum sensor fix printer controller the problem? board. 935 - Black Drum Sensor Error Questions / Step Actions Is connector CN27 Go to step 2. Plug the connector connected properly? in securely.
Page 132: Duplex Error
5055-01X 940 - High Capacity Feed Sensor Error Questions / Step Actions Is connector CN40 Go to “High Plug the connector on the printer Capacity Feeder in securely. controller board (HCF) Service connected properly? Check” on page 2-73. 941 - High Capacity Feed Tray Error Questions / Step Actions...
Page 133: 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 Problem solved. Replace the printhead controller printer controller board.
Page 134: Machine Id Error
5055-01X 948 - Machine ID Error 948 Service Machine ID Questions / Step Actions Turn the printer off Problem solved. Verify proper and wait 30 seconds. installation of the Turn the printer on. EPROMs on both Did this fix the the printer problem? controller board...
Page 135: Nvram Chip Failure
5055-01X 949 - Tray (X) Comm Questions / Step Actions Replace the printer Problem solved. Replace the controller board. expansion feeder Does this fix the control board for problem? trays 2 - 5. If the problem is with the high capacity paper feeder, replace the HCPF board.
Page 136 5055-01X 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 the RAM Card or the RIP board. 961 - RAM Slot 2 Bad Replace the RAM Card or the RIP board.
Page 137 5055-01X 975 - Unrecognizable Network Port Software error. 976 - Unrecoverable Software Error in Network Port Software error. Go to the “Options Service Check” on page 2-98 and refer to the network card option section. 978 - Bad Checksum While Programming Network Card Software error.
Page 138 5055-01X 980 - Face Up/Down Switching Error 980 Service Switch Error Check Area Questions / Step Actions Does the FU/FD Go to step 2. Go to step 3. deflector move at all during power Manually operate Go to step 3. Go to step 4.
Page 139 5055-01X Questions / Step Actions Test the FU/FD Go to step 6. Replace the FU/FD sensor while deflector sensor actuating the sensor. Does the voltage fluctuate between 0 V and +5 V between pins 1 and 2 on connector CN12 on the printer controller board? Check the cable...
Page 140 5055-01X 981 - Belt Up/Down Sensor Error 981 Service Switch Error Questions / Step Actions Are connectors Go to step 2. Plug the connectors CN409 and in securely. CN407 on the sensor board connected properly? Are connectors Go to step 3. Plug the connector in CN26 and CN29 securely.
Page 141: Sensor Controller Error
5055-01X Questions / Step Actions Test the sensor. Replace the belt up/ Replace the belt up/ While actuating down clutch. down sensor. the sensor, does Go to step 6. the voltage fluctuate between 0 V and +5 V between pins 8 and 10 of connector CN29 on the printer...
Page 142: Black Gear Sensor Error
5055-01X 983 - Black Gear Sensor Error 983 Service Gear Sensor Questions / Step Actions Is connector CN20 Go to step 2. Plug the connector on the printer in securely. controller board connected properly? Clean the gear Problem solved. Replace the K sensor.
Page 143: Transfer Belt Thermistor Error
5055-01X 985 - Transfer Belt Thermistor Error 985 Service Thermistor Error Questions / Step Actions Are connectors Go to step 2. Plug the connector CN407 and CN408 in securely. on the sensor board connected properly? Is connector CN29 Replace the transfer Plug the connector on the printer belt unit.
Page 144: Cpu Error
5055-01X Questions / Step Actions Test the sensor. Replace the printer Replace the upper While actuating the controller board. and lower sensor, does the transparency voltage fluctuate sensor. between 0 V and +5 between pins 2 and 3 of connector CN7 of the printer controller board? 992 - Temperature/Humidity Sensor Error...
Page 145: Density Sensor Error
5055-01X 994 - Density Sensor Error Questions / Step Actions Are connectors Go to step 2. Plug the connector in CN406 and securely. CN407 on the sensor board connected properly? Is connector CN29 Replace the density Plug the connector in on the printer sensor.
Page 146 5055-01X Questions / Step Actions Check to ensure Go to step 3. Properly connect the the connector PJ6 cables. on the finisher control board and the feed motor assembly cable are properly connected. Are the cables properly connected? Make sure the Go to step 4.
Page 147 5055-01X Questions / Step Actions Measure for +24 V Replace the power Replace the finisher dc between pins 1 supply. control board. and 2 on connector PJ3 on the finisher control board. Measure for +5 V dc between pins 1 and 3 on PJ2 on the finisher control board.
Page 148: Finisher Jogging Motor Error
5055-01X 996 - Finisher Jogging Motor Error Questions / Step Actions Are there foreign Clear the objects or Go to step 2. objects or obstruction. obstructions in the jogging assembly? Are the jogging Go to step 3. Securely connect the motor connectors connectors.
Page 149 5055-01X Questions / Step Actions Check for +24 V Replace the finisher Replace the power dc (+ or - 10%) control board. supply. between pins 1 and 2 of PJ3 on the finisher control board. Is +24 V dc present? 2-33 Diagnostic Information...
Page 150: Finisher Tractor Motor Error
5055-01X 997 - Finisher Tractor Motor Error Questions / Step Actions Are there Remove the objects Go to step 2. obstructions or or obstructions. foreign objects in the accumulator or face down paper path? Are the connectors Go to step 3. Securely connect the CN3 at the tractor connectors.
Page 151: Tray Elevator Motor Error
5055-01X Questions / Step Actions Check for +24 V Replace the finisher Replace the power dc between pins 1 control board. supply. and 2 of PJ3 on the finisher control board. Is +24 V dc present? 998 - Tray Elevator Motor Error Questions / Step Actions...
Page 152: Stapler Motor Error
5055-01X Questions / Step Actions Disconnect CN4 at Go to step 4. Replace the cable. the tray elevator motor. Disconnect PJ4 on the finisher control board. Measure for continuity between CN4 pin 1 and PJ4 pin 7. Measure for continuity between CN4 pin 2 and PJ4 pin 8.
Page 153 5055-01X Questions / Step Actions Are the connectors Go to step 5. Securely connect the CN5 on the stapler connectors. and PJ1 on the finisher control board securely connected? Did replacement of Problem resolved. Replace the stapler. the stapler cartridge resolve the problem? Make sure the Replace the stapler.
Page 154: Attendance Messages
5055-01X Attendance Messages Message Meaning Action Activating Menu The printer is activating Wait for the message to Changes changes made to the printer clear. settings. Bin <x> Full The specified bin is full. Remove the paper from the bin. Busy The printer is busy receiving, Wait for the message to processing, or printing data.
Page 155 5055-01X Message Meaning Action Close Side The printer side door is open. Close the printer side door. Door If the error cannot be reset, go to “Map 1 - False “Side Door Open” Message” on page 2-57. Close Front The printer front door is open. Close the printer top door Door and front door.
Page 156 5055-01X Message Meaning Action Disk Corrupted The printer has attempted a • Press Go to reformat the Reformat? disk recovery process and disk and delete all files cannot repair the disk. currently stored on the disk. • Press Stop to clear the message without reformatting the disk.
Page 157 5055-01X Message Meaning Action Held Jobs May The printer memory is too full. • Press Go to clear the be Lost message. The printer frees memory by deleting the oldest job and continues deleting jobs until there is enough memory. •...
Page 158 5055-01X Message Meaning Action Load <x> The printer is trying to feed Load paper of the size and paper from a source it detects type requested in the is empty. second line of the display in the specified tray. Press Menu to open the Job Menu and cancel the current job.
Page 159 5055-01X Message Meaning Action Network Network interface is the active Wait for the message to <x>, <y> communication link, where clear. <x> represents the active link and <y> represents the channel. No Jobs Found, The PIN number entered is • Press Go to enter Retry? not associated with any another PIN.
Page 160 5055-01X Message Meaning Action Printing Font The printer is processing or Wait for the message to List printing a list of all available clear. fonts for the specified printer language. Printing Job The printer is processing or Wait for the message to Accounting Stat printing all job accounting clear.
Page 161 5055-01X Message Meaning Action Ready Hex The printer is in Hex Trace • Send a job to print. All mode and is ready to receive data is printed in and process print jobs hexadecimal. Control strings are printed, not executed. •...
Page 162 Download the correct Error Load version on the firmware card emulator version from Emul Option does not match the printer Lexmark’s Web site. code version. 2 <xx> Paper The printer detects a paper Clear the paper path. If the jam.
Page 163 5055-01X Message Meaning Action 30 Coating Roll The oil coating roll is either Correctly install the oil Missing missing or installed coating roll. If the message incorrectly. cannot be reset, go to “Map 5 - False “30 Oil Coating Roll Missing” Message”...
Page 164 5055-01X Message Meaning Action 37 Insufficient The printer cannot • Delete fonts, macros, Defrag Memory defragment flash memory. and other data in printer memory. • Install additional printer memory. 37 Insufficient The printer memory is full and • Press Go to clear the Memory cannot continue processing message and continue...
Page 165 5055-01X Message Meaning Action 40 Tray <x> The high capacity feeder • Turn off the printer and Size Sense detects an error in the size be sure that all the high Error sensing mechanism. capacity feeder connectors are installed properly. •...
Page 166 5055-01X Message Meaning Action 53 Unformatted The printer detects • Press Go to clear the Flash unformatted flash memory. message and continue printing. • Format the flash memory. If the error remains, the flash memory may be defective. 54 Serial Option The printer has detected a •...
Page 167 5055-01X Message Meaning Action 56 Parallel Port Data has been sent to the • Press Go to clear the <x> Disabled printer through a disabled message. parallel port. • Make sure the Parallel 56 Std Parallel Buffer menu item in the Port Disabled Parallel Menu is set to Disabled.
Page 168 5055-01X Message Meaning Action 62 Disk Full Insufficient memory on the • Press Go to clear the hard disk. message and continue printing. • Delete fonts, macros, and other data stored on the hard disk. 63 Unformatted The printer detects an •...
Page 169 5055-01X Message Meaning Action 81 Engine Code Microcode in the engine flash Press Go to clear the CRC Failure code module has failed a message and discard the system check. code. Retransmit the microcode data from the host computer. 84 All Photo All of the photodevelopers Replace all of the Devs...
Page 170 5055-01X Message Meaning Action 84 Color Photo The color photodevelopers Replace the color Devs have reached end of life. photodevelopers (Cyan, Exhausted Magenta and Yellow) at the same time. If print quality is still acceptable and you do not want to replace the photodevelopers, press Go to clear the message and continue printing.
Page 171 5055-01X Message Meaning Action 88 <color> The printer has ceased Install a new toner Toner Empty operating because the cartridge and go to specified toner cartridge is “Map 7 - False “88 empty. <Color> Toner Low/Toner Empty” Message” on page 2-61.
Page 172: Clearing Finisher Messages
5055-01X Clearing Finisher Messages Message Solution Bin <X> Full Remove the stack of paper from the bin to clear the message. If you assigned the bin a name, the bin name is displayed instead of the bin number. Press Go to clear the message and continue printing. Check Finisher Make sure the finisher is flush against the printer.
Page 173: Maintenance Analysis Procedures (Maps)
5055-01X Message Solution Insert Staple The staple cartridge is either missing or installed Cartridge incorrectly. Correctly install the staple cartridge. Go to “Finisher Service Check” on page 2-74 to check the staple cartridge set sensor. 210 Staple Jam Open the finisher stapler door, remove the paper from the accumulator, and remove the staple jam.
Page 174 5055-01X Map 3 - False “Close Tray (X) Top Cover” Message Step Questions / Actions Remove the rear cover on the Replace the Replace the high capacity feeder and HCF card. cover open observe LED 9 on the HCF card micro-switch.
Page 175 5055-01X Map 4 - False “Tray (X) Low/Empty” Message Step Questions / Actions Is the “Tray X Low” message Go to step 2. Go to step 5. present? Is the paper remaining Go to step 3. Repair or actuator inside the cassette replace parts drawer binding, or operating as necessary.
Page 176 5055-01X Map 5 - False “30 Oil Coating Roll Missing” Message Step Questions / Actions Is the OCR properly installed? Go to step 2. Properly install the OCR. Is the OCR fuse missing? Replace the Go to step 3. Is the OCR contact at the rear Replace the Go to step 4.
Page 177 5055-01X Map 7 - False “88 <Color> Toner Low/Toner Empty” Message Step Questions / Actions Ensure that the encoder Go to step 2. Clean the located at the rear of the toner encoder set is clean and free of dirt or wheel or paper dust.
Page 178 5055-01X Map 8 - False “40 Tray (X) Size Sensor Error” Message Step Questions / Actions On the high capacity feeder, Go to step 2. Replace the are the paper size adjusting missing screws present on the upper thumbscrew portion of the side fence and or screw them fully screwed into the adjusting in all the way.
Page 179 5055-01X Map 10 - Unrecoverable “Check Tray (X) or Duplex Connection” Message Step Questions / Actions Is the problem with a specific Go to step 2. Go to step 8. paper tray or the duplex unit? Is the problem with tray 1? Go to step 3.
Page 180 5055-01X Step Questions / Actions Exchange the expansion Replace the Replace the feeder control board for the defective upper and problem tray with one above or expansion lower below. Does the symptom feeder control expansion follow the exchanged card? card. paper feed drawer connecting...
Page 181 5055-01X Map 11 - Paper Size Map Step Questions / Actions Do the paper size sensor Go to step 2. Replace parts actuators on the paper as necessary. operation tray operate correctly, as you slide the paper location plate? Do the size sensor levers Go to step 3.
Page 182: Symptom Table
Go to the “Transfer Belt Up/Down Service Check” on page 2-89. 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 If you set the Paper Type to Transparency or Card Stock,...
Page 183 5055-01X Symptom Action Fuser failure. Go to the “920 - Fuser Error - Fuser Heater Trouble” on page 2-7. No paper pick-up Go to the “Paper Carrying Service Check” on from page 2-75. multipurpose tray. No paper pick-up Go to the “Paper Carrying Service Check”...
Page 184 5055-01X Symptom Action Evenly spaced Go to the “Marks on Paper Service Check” on marks on the page 2-87. paper, or a single mark in the same place on every page. Poor fusing. Go to the “920 - Fuser Error - Fuser Heater Trouble” on page 2-7.
Page 185 5055-01X Finisher Use the following table to find solutions to problems with the optional finisher. Symptom Cause Solution Paper The finisher and Paper frequently jams in the frequently printer are finisher. Properly align the finisher jams in the misaligned. with the printer. Align the top of the finisher.
Page 186 5055-01X Symptom Cause Solution You cannot The cover is not Open and close the top cover and clear the closed, finisher is make sure the finisher is locked paper jam against the printer, onto the alignment pins. Recheck message. or there is paper the finisher and printer for somewhere in the additional jams.
Page 187: Service Checks
5055-01X Service Checks Drive 1 DC Motor Service Check Action • DC Motor If the motor does not attempt to turn and you receive • Drive Unit 1 a 910 error code, replace the driver 1 dc motor. • Printer Be sure the toner and photodeveloper units are not Controller causing an overload on the dc motor.
Page 188: Duplex Unit Service Check
5055-01X Duplex Unit Service Check Action Feed Roller Check for wear or damage to the feed roller belts. Belts Replace as necessary. • Duplex Be sure the stepper motor turns freely with no Stepper binding. Motor Check for wear or damage to the associated gears. •...
Page 189: Face Down Stacker Full Service Check
5055-01X Face Down Stacker Full Service Check Action Stacker Full Check the stacker full detection lever for damage. Detection Lever • Stacker Full Check for a voltage fluctuation between 0 V and +5 Detection V between pins 2 and 3 of connector CN9 on the Sensor printer controller board while actuating the sensor.
Page 190: Finisher Service Check
5055-01X Finisher Service Check Action • Input Path Sensor Note: For frequent jams, hole punch • Paper Register problems or stapling problems. First check Sensor the finisher to printer alignment. Go to • Upper Tray Exit “Aligning the Finisher and Printer” on Sensor page 1-86.
Page 191: Operator Panel Service Check
5055-01X Action • Registration Roller Run the hole punch test in diagnostic mode • Paper Exit Rollers to test the hole punch function. • Registration Sensor • Registration Clutch • Punch Clutch Punch Unit • Timing Belt • Elevator Motor Observe the elevator motor operation while •...
Page 192 5055-01X • Paper Feed Set up and run a test in Maintenance Mode and go Clutch to the “High Capacity Feeder (HCF) Service • Paper Feed Check” on page 2-73. Motor Ensure all motors, clutches, and sensors operate • Sensors correctly.
Page 193 5055-01X Paper is being picked up and carried to the registration roller (Areas C, E, 240, 24x). Action • Paper Size Be sure the paper cassette has the size guides and Guide the side locator locks are working properly. • Side Location Replace parts as necessary.
Page 194 5055-01X Paper has stopped at the registration roller or has not reached the fuser (Areas C, E, 240, 24x). Action • Registration Check these parts for wear or damage. Replace as Roller Clutch necessary. Be sure all guide surfaces in the paper •...
Page 195 5055-01X Paper has entered the fuser and exited the printer (Area B). Action Fuser Remove any toner buildup and replace any worn or damaged parts. • Fuser Exit Be sure the exit FU/FD solenoid energizes in the Lower Roller correct position for either face down or face up •...
Page 196 5055-01X Paper has entered the duplex unit (Area D). Action Feed Rollers Check for wear or damage to feed rollers and belts. Belts Duplex Unit Be sure the duplex unit is properly installed and that all connections are correct. • Duplex Be sure the stepper motor turns freely with no Stopper binding.
Page 197 5055-01X • Paper Feed Check the paper feed motors by running the staple Motor test or hole punch test in diagnostic mode. • Finisher If the paper feed motor has been replaced, replace Control the finisher control board. Board Paper jammed in Finisher Area H Action •...
Page 198 5055-01X • Belt Home Ensure that all sensors are operating properly by Position running the sensor test in diagnostic mode. Sensor Replace sensors as necessary. • Jogging Home Position Sensor • Paper Detecting Sensor • Invert Path Sensor • Finisher Control Board 2-82...
Page 199 5055-01X Paper jammed in Area I Action Timing Belts Check finisher to printer alignment. Go to “Aligning the Finisher and Printer” on page 1-86. Check the paper path for obstructions. Check all belts for wear or damage. • Invert (Tray 2) Check to ensure that all rollers are operating Exit Roller correctly by running the hole punch and staple tests...
Page 200: Paper Exit, Fu/Fd Service Check
5055-01X Paper Exit, FU/FD Service Check Action FU/FD Sensor If the paper is not exiting to the back paper face up Actuator tray or the face down tray, check the sensor for proper operation by checking for a fluctuation of between 0 V and +5 V between pins 1 and 2 of connector CN12, while actuating the sensor.
Page 201: Photodeveloper Missing Service Check
5055-01X Photodeveloper Missing Service Check When you replace the photodeveloper unit, all three color units must be replaced at the same time. Action Photodeveloper Check for dirt or damage to the sensing contacts on rear. Clean or replace the photodeveloper drum unit if necessary.
Page 202: Power Supply Service Check
5055-01X Power Supply Service Check Action Voltage 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. Power Cord Check the power cord for continuity. •...
Page 203: 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 204 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 2-88 Service Manual...
Page 205: Transfer Belt Up/Down Service Check
5055-01X Transfer Belt Up/Down Service Check Action Belt Up/Down Check the transfer belt up/down sensor. Be sure that Sensors connector CN29 is firmly connected to the printer controller board. Replace the sensor or the actuator Belt Up/Down if necessary. Check for a fluctuation between 0 V Actuator and +5 V between pins 8 and 10, while actuating the sensor.
Page 206: Image Quality Troubleshooting
5055-01X Image Quality Troubleshooting Print Quality Problems Problem Action Print is too light, or printed Be sure you’re using recommended images or characters have voids paper or other media. Use media from a or dropouts. new package. Be sure you have selected the correct Paper Weight setting for the media you’re using.
Page 207 5055-01X Problem Action Colored lines, streaks, or Replace the photodevelopers. If the smudges appear on the printed problem only occurs when printing black, page, or print appears blurred or replace just the black photodeveloper and unclear. fuser coating roll. If the problem occurs when printing one of the colors, replace all three of the color photodevelopers.
Page 208 5055-01X Problem Action Light lines or streaks appear on Clean the LEDs. the printed page. Make sure the affected photodeveloper is completely installed in the printer. Remove the affected toner cartridge and gently shake it back and forth to distribute the toner evenly.
Page 209 “Periodic Dirt” on page 2-97. Quality of printed transparencies Be sure you’re using the recommended is inadequate. Lexmark transparencies. Be sure you have selected the correct paper weight setting for the media you are using. When printing transparencies, always set the Paper Type to Transparency.
Page 210 5055-01X No Image Possible Cause Action Moist Paper 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. LED Printhead Be sure the LED printhead cable is securely connected to the printhead controller board and LED printhead assembly.
Page 211: Black Line
5055-01X Black Line Possible Cause Action Photodeveloper Drum Clean any dirt from the drum surface. Replace it if it is scratched. • Fuser Detach Pawl Remove any toner buildup. Replace • Fuser Roller Surface the fuser. • Fuser Thermistor Surface LED Printhead Clean the LED printhead.
Page 212: Missing Colors
5055-01X Missing Colors Possible Cause Action Toner Cartridge Unit Be sure the toner cartridge and the PC drum unit are properly seated. Photodeveloper Be sure the contacts on the print unit are clean. Be sure the print unit is installed in the correct position. Run a print test.
Page 213: Uneven Printing
5055-01X Uneven Printing Possible Cause Action Photodeveloper Check for condensation or dirt on the photodeveloper. LED Printhead Clean any dirt off the exposed surface of the LED printhead. Also check the locating pins of the printhead. Transfer Belt Unit Be sure the transfer belt is clean and not damaged.
Page 214: Options Service Check
5055-01X Possible Cause Action Belt Unit Check the transfer belt unit for scratches or nicks. Be sure there is no toner buildup on the belt. Replace the belt unit if it is damaged. Options Service Check Service Tip: When you have a problem with any of the options installed in the options slots on the interconnect board, switch the non operating option to one of the other option slots to isolate the failure.
Page 215 5055-01X or damaged. If the test fails, replace the DRAM card assembly. If the problem continues, replace the board. 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 hard disk and the hard disk board are correctly installed.
Page 216 5055-01X 2-100 Service Manual...
Page 217: Diagnostic Aids
5055-01X 3. Diagnostic Aids Note: When troubleshooting, or prior to making any adjustment to print quality, always be sure: • 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 218: Using The Operator Panel
5055-01X 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. Indicator Light State Indicates...
Page 219: Operator Panel Buttons
5055-01X Operator Panel Buttons Button Function Press • Exit printer menus and return the printer to the ready state. • Clear certain messages from the display. If you’ve changed printer settings from the operator panel menus, press Go before you send a job to print. Menu Press Menu...
Page 220: Printing The Menu Settings
5055-01X Printing the Menu Settings 1. From the printer operator panel, press to enter the menus. Menu 2. Continue to press and release until you see Menu TESTS MENU 3. Press is displayed on the first line, and Select TESTS MENU is on the second line Print Menus 4.
Page 221 5055-01X JOB MENU SETUP MENU PCL EMUL MENU Reset Printer Printer Language Font Source Cancel Fax Printer Usage Font Name Confidential Job Power Saver Point Size Held Job Resource Save Pitch Download Target Symbol Set Print Timeout Orientation Auto Continue Lines per Page Wait Timeout A4 Width...
Page 222: Diagnostic Mode
5055-01X 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 is displayed.The alignment menu displays first.
Page 223 5055-01X 3. Press Menu until Alignment Test Printing is displayed and press Select. Alignment Test Printing... 4. Look at the color and the value you have changed and see if this is acceptable. If so, go to the next adjustment. If it is not acceptable, go back to the color and adjust it again.
Page 224: Adjustment Example
5055-01X Adjustment Example Here is a sample of the magenta radar image. Looking down the left side for both X and Y, you can see the X value is close to correct. It may be a little to the right. The Y value for magenta is incorrect. The magenta radar image is too far above the black.
Page 225 5055-01X Summary Notes: Objective: Using the X, Y, and T adjustment procedure, adjust the color to overlay the radar image as precisely as possible. X and Y values are taken from the left side. Theta is taken from the right. Increasing values for X drives the color radar right.
Page 226: Print Tests
5055-01X 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 227 5055-01X Note: <input source> represents the input source selected for the Print Test. One of the following sources is displayed: Tray 1, MP Feeder, Standard Bin (Face-Down), or Output Bin 1. The value of the <media width> field is displayed when the narrow media sensor determines the media used for the Quick Test is narrow or wide, (N for narrow, W for wide).
Page 228: 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 verifies the operation of each button on the operator panel.
Page 229 5055-01X DRAM Memory Test The DRAM Memory Test checks the validity of DRAM (both standard and optional). Patterns of data are written to DRAM verifying each bit in memory can be set and read correctly. When selecting this test from the operator panel, the printer begins testing DRAM memory and the following message is displayed: DRAM Memory Test P:##### F:#####...
Page 230 5055-01X ROM Memory Test The ROM Memory Test checks the validity of the RIP code and fonts. When this test is selected from the operator panel, the printer begins testing ROM memory and the following message is displayed. ROM Memory Test P:##### F:##### Terminology: P:###### represents the number of times the memory test finishes...
Page 231 5055-01X Parallel Wrap Test The Parallel Wrap Test checks the operation of each parallel signal, using a wrap plug. To perform the wrap test: 1. Disconnect the parallel interface cable, and install the parallel wrap plug. 2. Select HARDWARE TESTS from the Diagnostics Menu. 3.
Page 232 5055-01X If the test fails, the Fail Count increments by 1 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 233 5055-01X Serial Wrap Tests The Serial Wrap Test checks each signal of the serial port hardware using a wrap plug. To perform the wrap test: 1. Disconnect the serial interface cable, and install the serial wrap plug. 2. Select HARDWARE TESTS from the Diagnostics Menu. 3.
Page 234: Finisher Tests
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, or CTS Interrupt Error.
Page 235 5055-01X Finisher Sensor Test This test determines whether or not the finisher sensors and switches are working correctly. To run the test, select the Sensor/Sw Test operation from the Finisher Tests top level menu. The following sensors and switches are listed in the bottom level menu: •...
Page 236 5055-01X • Go into diagnostic mode. • Finisher tests - Sensor/sw tests • Input Path - This is the paper exit sensor in the fuser activated by moving the sensor actuator. • Paper Register - Activate the paper registration sensor and observe the display OP - CL.
Page 237: 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 appears 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 is displayed: Quick Disk Test Test Passed...
Page 238 5055-01X To exit the test immediately and return to the DEVICE TESTS screen, press Return or Stop. The Power indicator blinks while the test is in progress. Once Go is selected, the following screen is displayed to indicate the operation has begun: Disk Test/Clean Testing...
Page 239 5055-01X The Power indicator blinks while the test is in progress. If the test is successful, the following message appears: Flash Test Test Passed Press Go, Return, or Stop to return to the DEVICE TESTS screen. The Power indicator turns on solid. If the test fails, the following message is displayed.
Page 240: 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 • Black Range = 0 to 45 If you replace one or more of the printheads, or the EEPROM for the...
Page 241 5055-01X Par S Strobe Adj This message displays only if the printer is confused with the standard parallel port. Par 1 Strobe Adj This message displays only if a parallel port is available through the PCL slot 1. Auto Color Adj •...
Page 242: Viewing And Resetting The Drum Counters
5055-01X Viewing and Resetting the Drum Counters The drum counters increment when a page is printed. The drum counter for a particular plane increments (if that color is printed), by 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.
Page 243 5055-01X Setting the Page Count The page count can be changed through the Diagnostic menus. The servicer uses this menu 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 is displayed as follows: Page Count =1234567*...
Page 244 5055-01X Setting Configuration ID Use the Configuration ID to communicate characteristics of the printer that cannot be determined by the hardware sensors. The Configuration ID is originally set when the printer is manufactured, but must be reset whenever the engine board, containing NVRAM memory, is replaced The Configuration ID can be set through the Diagnostic menus.
Page 245: Diagnostics - Error Log
5055-01X 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. The most recent error displays in position 1, and the oldest error displays in position 12. If fewer than 12 errors have occurred, the oldest error displays in the position before the empty log entries begin.
Page 246 5055-01X Clearing the Error Log To clear the error log, select Clear Log from the ERROR LOG menu. The following message is displayed: Clear Log = Yes Select Yes to clear the log, as the empty log message appears: 1-000 2-000 3-000 4-000...
Page 247: Repair Information
5055-01X 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 248: 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 249: 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 250: Removals
5055-01X Removals Cover, Top Removal 1. Open the top unit and remove the photodevelopers and toner cartridges. 2. Remove the operator panel. 3. Remove three screws from the bottom, the four screws from the back side, and the screw from the left side. Operator Panel Removal 1.
Page 251: 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 252: Cover, Front Left Removal
5055-01X Cover, Front Left Removal 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 253: 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 254: 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 255: 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 256: 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 257: Rip Box Removal
5055-01X RIP Box Removal 1. Remove the six 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 258: Led Printhead Removal
5055-01X LED Printhead Removal 1. Open the top unit, remove the top cover, toner cartridges and photodeveloper 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 259 5055-01X 5. Remove the four connectors from LED printhead. 6. Remove the two screws from the ground wires. 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.
Page 260: 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 261: 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 262: Upper Fan Removal
5055-01X Upper Fan Removal 1. Open the top unit and remove the toner cartridges and photodeveloper 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 263: Multipurpose Feeder Tray Removal
5055-01X Multipurpose Feeder Tray Removal 1. Open the top unit and remove the front cover, cassette feeder, turn guides and right side cover. 2. Open the multipurpose feeder and slide it toward the magnet in the direction of the arrow, removing it from the printer. 4-17 Repair Information...
Page 264: 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 until the paper feed roller screws are visible. Turn the paper feed roller, and remove the screws from the roller.
Page 265: 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 266: 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 267: 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 268: 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 269: Gear Cover Removal
5055-01X Gear Cover Removal Multipurpose Feeder Roll Removal Multipurpose Feeder Clutch Removal OHP Detection Sensor (Upper) Removal 1. Open the top unit, and remove the upper cassette, front cover, multipurpose feeder, right side cover, and turn guide. 2. Remove the two screws from the gear cover, and remove the cover.
Page 270 5055-01X 6. Remove the screw from the OHP detection sensor (upper). 7. Turn the bearing stopper of the multipurpose feeder roll forward 1/4 turn and remove upward. 8. Remove the C-clip and remove the multipurpose feeder clutch. Note: After reassembling the components, coat the contact areas of the multipurpose feeder roll shaft and multipurpose feeder ground plate with conductive grease.
Page 271: Fanning Pad Removal
5055-01X Fanning Pad Removal 1. Open the top unit and remove the upper cassette, front cover, turn guide, multipurpose feeder, right side cover, and multipurpose feeder roll. 2. Release clips at 4 positions and remove the fanning pad. 4-25 Repair Information...
Page 272: Registration Sensor Removal
5055-01X Registration Sensor Removal 1. Open the top unit and remove the upper cassette, front cover, turn guide, multipurpose feeder, right side cover, and multipurpose feeder frame. 2. Disconnect the connector of the registration sensor and remove the sensor. 4-26 Service Manual...
Page 273: Multipurpose Feeder Paper Present Sensor Removal
5055-01X Multipurpose Feeder Paper Present Sensor Removal 1. Open the top unit and remove the upper cassette, front cover, turn guide, multipurpose feeder, right side cover, turn guide, and multipurpose feeder frame. 2. Disconnect the connector and remove the multipurpose feeder paper present sensor.
Page 274: 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, multipurpose feeder, right side cover, turn guide, OHP detection sensor (upper), multipurpose feeder frame, back cover, RIP cover, RIP board, RIP box, and electronic box.
Page 275: 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 276: Transfer Belt Removal
5055-01X Transfer Belt Removal To replace the transfer belt before the Life Warning or Exhausted messages appear, open the Supplies Menu on the operator panel and select Replace Supplies, select Belt, and select Replace Now. If the 80 Transfer Belt Life Warning or Exhausted message appears, press Select when the Select = Replace message appears.
Page 277 5055-01X 3. Loosen the thumbscrews as shown. 4-31 Repair Information...
Page 278 5055-01X 4. Lift and remove the transfer belt cover. 5. Loosen the thumbscrews as shown. 4-32 Service Manual...
Page 279 5055-01X 6. Pull the transfer belt out. 7. After replacing the transfer belt and removing the four shipping spacers, tighten the transfer belt thumbscrews and reinstall the transfer belt cover. 8. Close the top unit and rotate the locking lever to the right, close the front cover.
Page 280: 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 281: 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 282: 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 283: Printer Controller Removal
5055-01X 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. Pay attention to the location or label the two pin connectors when removing them from the board to avoid re- connection into the wrong location.
Page 284: High Voltage Power Supply Board (Hvu) Removal
5055-01X 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. 4.
Page 285: R Sub Frame Removal
5055-01X R Sub Frame Removal Toner Remaining Sensor 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.
Page 286: 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 287: Drive Gear Unit Sensor Assembly Removal
5055-01X 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. 3.
Page 288: Belt Up/Down Clutch Removal
5055-01X 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 289: 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 290: 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 291: 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 292: 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 293: 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 294: 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 295: 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 296: Main Drive Unit Removal
5055-01X Main Drive Unit Removal 1. Open the top unit and remove the gear cover, upper cassette, left front cover, paper feed cover, RIP cover, RIP board, RIP box, electronic box, and rear cover. 2. Open the turn guide and paper feed cover and remove the duplex unit.
Page 297 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 nine screws, from the bracket.
Page 298 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 299 5055-01X 16. Remove the six screws on the right side. 17. Remove the two screws from the drive unit, and remove the unit. 18. Remove the three screws from the belt up/down clutch box and remove the belt up/down clutch. 19.
Page 300: 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 301: 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, photodeveloper 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 302 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 303: Turn Guide Cover Sensor Removal
5055-01X Turn Guide Cover Sensor Removal 1. Open the top unit and remove the upper cassette, front cover, multipurpose 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 304: 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 305: 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 90 degrees. 3. Remove the spring. 4. Remove the lock handle assembly. 4-59 Repair Information...
Page 306: 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 307: 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 from the right stopper, and remove the stopper. 4. Remove the screw from the left stopper, and remove the stopper.
Page 308: 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 309: Options Removals
5055-01X Options Removals Expansion Paper Feeder Removal 1. Remove the cassette. 2. Remove the two screws from the front cover, and remove 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 310 5055-01X 9. Remove the screw from the paper 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 four screws from the paper feed roller assembly N5 and remove the roller.
Page 311 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 312 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 313 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 314 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 315 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 316 5055-01X 26. Remove the two screws from the connector plate, and remove the plate. 27. Remove the two screws from the upper drawer connector (male), and remove the connector. 28. Remove the two screws from the lower drawer connector (female), and remove the connector. 4-70 Service Manual...
Page 317: Duplex Removals
5055-01X Duplex Removals 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 318: 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 319: Duplex Pressure Roller And Solenoid Removal
5055-01X Duplex Pressure Roller and Solenoid Removal 1. Remove the two screws securing the pressure roller solenoid assembly. 4-73 Repair Information...
Page 320: Duplex Feed Roller And Solenoid Removal
5055-01X 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. Remove the feed roller and springs. 4-74 Service Manual...
Page 321: 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 322: 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. 4-76 Service Manual...
Page 323: High Capacity Feeder (Hcf) Removals
5055-01X High Capacity Feeder (HCF) Removals HCF 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.
Page 324: Hcf Call Roller, Paper Feed Roller, Reverse Roller Removal
5055-01X HCF 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 325: Hcf Pickup Solenoid Removal
5055-01X HCF 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 326: Hcf Paper End Sensor Removal
5055-01X HCF Paper End Sensor Removal HCF 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 327 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 328: Hcf Tray Motor Removal
5055-01X HCF 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. 4-82 Service Manual...
Page 329: Hcf Paper Level Sensor Removal
5055-01X HCF 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 330: Hcf Power Supply Removal
5055-01X HCF 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 331: Finisher Removals
5055-01X Finisher Removals External Covers Removals 1. Remove the finisher trays. 2. Remove the two screws from the front cover and remove the cover. 3. Remove the two screws of the rear cover and remove the cover. 4-85 Repair Information...
Page 332 5055-01X 4. Remove the two screws from the top cover and remove the cover. 4-86 Service Manual...
Page 333: Hole Punch Removal
5055-01X Hole Punch Removal 1. Remove the external covers. 2. Remove the hole punch unit cables. 3. Remove the tension spring. 4. Remove the screw and E-ring from the tension bracket and remove the bracket. Note: When installing the tension bracket, use the left side screw hole for the three hole punch unit and the right side screw hole for the four hole punch unit.
Page 334: Finisher Control Board Removal
5055-01X Finisher Control Board Removal 1. Remove the external covers. 2. Disconnect all of the associated connectors. 3. Remove the four finisher control board mounting screws and remove the board. 4-88 Service Manual...
Page 335: Registration Roller Clutch Removal
5055-01X Registration Roller Clutch Removal 1. Remove the harness from the clamp. 2. Remove the three control board mounting bracket screws and remove the bracket. 3. Remove the registration roller clutch set screw. 4. Remove the registration roller clutch connector. 5.
Page 336: Registration Roller Removal
5055-01X Registration Roller Removal 1. Remove the hole punch unit. 2. Remove the registration roller clutch. 3. Remove the registration roller bushing. 4. Remove the registration roller. Feed Motor Assembly Removal 1. Remove the finisher control board mounting bracket. 2. Loosen the tension bracket mounting screw. 3.
Page 337: Timing Belts 1 And 2 Removal
5055-01X Timing Belts 1 and 2 Removal 1. Remove the finisher control board mounting bracket. 2. Remove the feed motor mounting bracket. 3. Remove the tension bracket mounting screw. 4. Remove the tension spring. 5. Remove the timing belt 1. 6.
Page 338: Patting Roller Removal
5055-01X Patting Roller Removal 1. Remove the front and rear covers. 2. Remove the finisher control board mounting bracket. 3. Remove the two screws from the upper left panel and remove the panel. 4. Disconnect the sensor connector. 5. Remove the sensor harness from the harness clamp. 4-92 Service Manual...
Page 339 5055-01X 6. Remove the four upper guide plate screws from the inverter paper exit and remove the plate. 7. Remove the four screws from the inverter guide plate and remove the plate. 8. Remove the tension springs. Use the upper hole when installing the spring.
Page 340: Inverter Paper Exit Roller Removal
5055-01X 10. Remove the patting roller. Patting Roller Inverter Paper Exit Roller Removal 1. Remove the front and rear external covers. 2. Remove the four lower left panel screws and remove the panel. 3. Disconnect the harness connect from the lower left panel. 4-94 Service Manual...
Page 341 5055-01X 4. Remove the inverter paper exit roller bushing. 5. Remove the inverter idle gear. 6. Remove the inverter drive gear and bushing. 7. Remove the inverter paper exit roller. 4-95 Repair Information...
Page 342: Straight Paper Exit Roller Removal
5055-01X Straight Paper Exit Roller Removal 1. Remove the external covers. 2. Remove the finisher control board. 3. Remove the upper left panel. 4. Remove the front straight paper exit roller bushing. 5. Remove the belt and pulley. 6. Remove the rear straight paper exit roller E-ring and bushing. 4-96 Service Manual...
Page 343 5055-01X 7. Remove the straight paper exit roller. 4-97 Repair Information...
Page 344: Path Select Gate Removal
5055-01X Path Select Gate Removal 1. Remove the external covers. 2. Remove the two screws from the top cover and remove the cover. 3. Remove the gate solenoid with mounting bracket. 4. Remove the straight paper exit sensor connector. 5. Remove the upper guide plate for the straight paper exit. 6.
Page 345: Tractor Drive Motor Assembly Removal
5055-01X Tractor Drive Motor Assembly Removal 1. Remove the outer covers. 2. Remove the drive belt. 3. Remove the three screws and disconnect the connector from the tractor drive motor assembly. 4. Remove the tractor drive motor assembly. 4-99 Repair Information...
Page 346: Straight Paper Exit Discharge Brush Removal
5055-01X Straight Paper Exit Discharge Brush Removal 1. Remove the external covers. 2. Remove the two screws from the top cover and remove the cover. 3. Remove the two lever screws and remove the lever. 4. Remove the two discharge brush screws and remove the brush. Inverter Paper Exit Discharge Brush Removal 1.
Page 347: Tractor Belt Removal
5055-01X Tractor Belt Removal 1. Remove the external covers. 2. Remove the lower left panel. 3. Remove the cable connector of the left panel. 4. Remove the belt motor unit. 5. Remove the four lower guide support plate screws for the invert paper exit.
Page 348 5055-01X 7. Remove the paper jam removal knob. Knob 8. Remove the tractor belts. Note: Install the belt so that the belt tooth just under the plastic hook aligns with the hook on the other belt. 4-102 Service Manual...
Page 349: Staple Unit Removal
5055-01X Staple Unit Removal 1. Remove the staple unit connector. 2. Pull outward on the staple cover and remove the staple unit. Stack Area Discharge Brush Removal 1. Remove the dust box. 2. Remove the stack area discharge brushes. Power Supply Removal 1.
Page 350 5055-01X 4. Remove the four lower guide support plate screws and remove the plate. 5. Remove the two power supply screws. 6. Remove the screw from the ground wire. 4-104 Service Manual...
Page 351: Jogging Unit Removal
5055-01X 7. Disconnect the power supply connector and remove the power supply. Jogging Unit Removal 1. Remove the dust box. 2. Remove the two screws and remove the cover. 3. Disconnect the jogging motor connector. 4-105 Repair Information...
Page 352 5055-01X 4. Disconnect the jogging home position sensor connector. 5. Remove the jogging unit. 4-106 Service Manual...
Page 353: Elevator Motor Removal
5055-01X Elevator Motor Removal 1. Disconnect the elevator motor connector. 2. Remove the two elevator motor bracket screws from the bracket. 3. Remove the elevator motor assembly. 4-107 Repair Information...
Page 354 5055-01X 4-108 Service Manual...
Page 355: Locations
5055-01X 5. Locations Covers Diagram Locations...
Page 356: Major Parts Diagram
5055-01X Major Parts Diagram Service Manual...
Page 357 5055-01X Part Part Development Roll Paper Out Detection Lever Supply Roll Paper Out Detection Sensor Doctor Blade Duplex Unit Agitator Transfer Sheet Absorption Roll Transfer Belt Registration Upper Roll Belt Drive Roller Registration Lower Roll Paper Delivery Detection Lever Registration Sensor Press Roll Registration Detection Lever Heater...
Page 358: Sensor And Switch Locations
5055-01X Sensor and Switch Locations Service Manual...
Page 359 5055-01X Locations...
Page 360: Component Locations
5055-01X Component Locations Service Manual...
Page 361 5055-01X 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) Paper Remaining Detection Sensor (Expansion Feeder) Power Supply 2 Power Supply 1...
Page 362: Printer Controller Board
5055-01X Printer Controller Board Service Manual...
Page 363: Printhead Controller Board
5055-01X Printhead Controller Board Locations...
Page 364: Rip Board
5055-01X RIP Board 5-10 Service Manual...
Page 365: Power Source Unit 1 Board
5055-01X Power Source Unit 1 Board Power Source Unit 2 Board 5-11 Locations...
Page 366: High Voltage Power Supply Board
5055-01X High Voltage Power Supply Board 5-12 Service Manual...
Page 367: Sensor Board
5055-01X Sensor Board Expansion Paper Feeder Controller Board 5-13 Locations...
Page 368: Duplex Unit Controller Board
5055-01X Duplex Unit Controller Board Motor Drive Board Size Sensor Board 5-14 Service Manual...
Page 369: High Capacity Feeder (Hcf)
5055-01X High Capacity Feeder (HCF) Paper End Sensor Up Sensor Paper Size Sensor 1,2 Paper Feed Motor Pickup Solenoid Paper Feed Roller Call Roller Paper Feed Sensor Near End Sensor Residual Paper Sensor 1 Transfer Roller Residual Paper Sensor 2 Reverse Roller Tray Paper Level Sensor...
Page 370: High Capacity Paper Feed Configuration
5055-01X High Capacity Paper Feed Configuration Paper feed and separation Friction roller separation system with a non-contact mechanism magnet type maintenance-free torque limiter. Tray elevating system consisting of a tray motor and Tray up & down mechanism a timing belt. Fixed to the side fence, and size is entered from Size detection mechanism the printer.
Page 371: Electrical Parts Layout
5055-01X Electrical Parts Layout 5-17 Locations...
Page 372: Driving Parts Layout
5055-01X Driving Parts Layout 5-18 Service Manual...
Page 373: Finisher Locations
5055-01X Finisher Locations 5-19 Locations...
Page 374 5055-01X 5-20 Service Manual...
Page 375 5055-01X 5-21 Locations...
Page 376 5055-01X Sensor, Switch Purpose Paper Input Path Sensor Detects paper input from printer Paper Registration Sensor Trigger for punching Paper Exit Sensor (face up Confirming paper path bin) Tractor Home Position Finds home position for driving belt Sensor Paper Full Sensor A Detecting paper full on tray 2 Paper Detecting Sensor Detects paper for stapling...
Page 377 5055-01X Motor, Solenoid, Clutch Purpose Paper Feed Motor Paper feeding and inverting Tractor Drive Motor Tractor drive for paper feeding Staple Motor Stapling Path Select Solenoid Path changing Paper Jogging Motor Jogging of paper Punch Clutch Punching Registration Clutch Paper registration/feeding Elevator Motor Face down bin movement Finisher Face Up...
Page 378 5055-01X Finisher Electrical Part Number Part Name Number Part Name Paper Exit Sensor Power Supply PWBA (Upper Tray) Paper Register Staple Motor Sensor Path Select Solenoid Staple Existence Sensor Elevator Upper Limit Staple Home Position Sensor Sensor Tractor Drive Motor Staple Cartridge Set Switch Elevator Motor Paper Upper Level Sensor B...
Page 379 5055-01X 5-25 Locations...
Page 380 5055-01X 5-26 Service Manual...
Page 381: Preventive Maintenance
5055-01X 6. Preventive Maintenance Maintenance Kit When nearing the end-of-life of the fuser or transfer belt, the following message appears, indicating that it’s time to replace the fuser unit and/or transfer belt unit: 80 Belt Life Warning and/or 80 Fuser Life Warning Routine replacement of these parts ensures peak printer performance and helps prevent print quality problems and paper feed problems resulting from worn parts.
Page 382: Periodic Maintenance
5055-01X Periodic Maintenance This table lists the parts to be periodically cleaned by the servicer. Part Name Method Paper Feed Unit: Remove any dust or dirt, and wipe the surface lightly with a dry cloth. If • Paper Feed Roller it is still dirty, clean with a soft cloth •...
Page 383: 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 384: Assembly 1: Covers 1
5055-01X Assembly 1: Covers 1 Service Manual...
Page 385 5055-01X Asm- Part Units Description Index Number 1 - 1 12G7360 Board, Operator Panel 99A1501 Board Operator Panel (Japan) 56P9736 Cable, Operator Panel 56P9555 Housing, Upper Operator Panel 56P9556 Housing, Lower Operator Panel 56P9539 Cover, Top 56P9533 Cover Assembly, Right Side 56P9534 Magnet, Right Side Latch 56P9540...
Page 386: Assembly 2: Covers 2
5055-01X Assembly 2: Covers 2 Service Manual...
Page 387 5055-01X Asm- Part Units Description Index Number 2 - 1 56P9557 Exit Assembly, Face Up 11G0347 Screw, Stopper 11G0243 Interrupter, Photo 56P9564 Cable, Face Up Sensor 56P9559 Roller, Paper Exit 56P9561 Deflector, Face Up 56P9502 Switch, Paper Exit Tray 56P9565 Cable, Paper Exit Switch 56P9560 Brush, Face Up Static Discharge...
Page 388: Assembly 3: Covers 3
5055-01X Assembly 3: Covers 3 Service Manual...
Page 389 5055-01X Asm- Part Units Description Index Number 3 - 1 56P9566 Guide Assembly, Face-Down 56P9572 Spring, Face Down Paper Full 56P9573 Lever, Face Down Paper Full 56P9574 Roller, Face Down Upper Feed 11G0135 Roller, Face Down Pinch 56P9568 Spring, Face Down Pinch Roller 56P9569 Arm, Face Down Pinch Roller 56P9577...
Page 390: Assembly 4: Covers 4
5055-01X Assembly 4: Covers 4 Service Manual...
Page 391 5055-01X Asm- Part Units Description Index Number 4 - 1 56P9584 Guide Assembly, Turn Parts Catalog...
Page 392: Assembly 5: Covers 5
5055-01X Assembly 5: Covers 5 7-10 Service Manual...
Page 393 5055-01X Asm- Part Units Description Index Number 5 - 1 56P9587 Feeder Assembly, Multipurpose 56P9589 Extender, MPF 56P9588 Cover, MPF 56P9590 Spring, MPF 11G0118 Pinion, MPF 11G0117 Rack, MPF 11G0120 Spring, Feeder Lock 56P9946 Parts Packet 7-11 Parts Catalog...
Page 394: Assembly 6: Upper Unit
5055-01X Assembly 6: Upper Unit 7-12 Service Manual...
Page 395 5055-01X Asm- Part Units Description Index Number 6 - 1 56P9591 Frame, Upper 56P9620 Board, Printhead Controller 56P9638 Holder, Cable 56P9600 Cable Assembly, K13 56P9601 Cable Assembly, K24 56P9602 Cable Assembly, CL13 56P9603 Cable Assembly, CL24 56P9716 Cable Assembly, 8 Pin PH Controller 56P9718 Cable Assembly, 30 Pin PH Controller 56P9717...
Page 396 5055-01X Assembly 6: Upper Unit (Continued) 7-14 Service Manual...
Page 397 5055-01X Asm- Part Units Description Index Number 6 - 35 56P9599 Printhead, LED 56P9610 Rail, Right Side 56P9593 Holder, Rear Printhead 56P9619 Bracket, Rear Upper 56P9622 Fan, Upper Right 56P9623 Fan, Upper Left 56P9621 Bracket, Fan Holder 56P9629 Frame, Link 56P9639 Connector, Upper 56P9604...
Page 398 5055-01X Assembly 7: Base 1 7-16 Service Manual...
Page 399 5055-01X Asm- Part Units Description Index Number 7 - 1 56P9664 Frame, Paper Feed 56P9508 Bracket, Ground 56P9512 Roller Assembly, Paper Carrying 56P9511 Roller Assembly, Paper Feed 11G0243 Interrupter, Photo 56P9665 Sensor, Paper Feed 56P9507 Actuator, Paper Feed Sensor 56P9520 Handle, Waste Bottle Cam 56P9517 Spring, Right Cassette Guide...
Page 400: Assembly 7: Base 1
5055-01X Assembly 7: Base 1 (Continued) 7-18 Service Manual...
Page 401 5055-01X Asm- Part Units Description Index Number 7-35 56P9658 Sensor Assembly, K Toner Remaining 56P9646 Frame, Sub 56P9657 Sensor Assembly, Y Toner Remaining 56P9656 Sensor Assembly, C Toner Remaining 56P9655 Sensor Assembly, M Toner Remaining 56P9661 Rod, Lock 56P9662 Shaft, Changing 56P9524 Screw, Slide Rail 56P9948...
Page 402: Assembly 8: Base 2
5055-01X Assembly 8: Base 2 7-20 Service Manual...
Page 403 5055-01X Asm- Part Units Description Index Number 8 - 1 56P9666 Support Assembly, Upper Unit 56P9667 Pin, Upper Unit Support 56P9668 Handle Assembly, Lock 56P9669 Handle, Lock 56P9673 Cover, Electronic 56P9670 Shroud, Cable 56P9672 Guide, Cable 56P9671 Guide, Cable 56P9949 Parts Packet 7-21 Parts Catalog...
Page 404: Assembly 9: Base 3
5055-01X Assembly 9: Base 3 7-22 Service Manual...
Page 405 5055-01X Asm- Part Units Description Index Number 9 - 1 56P9688 Frame Assembly, MPF 56P9689 Clutch, MPF 56P9690 Actuator, MPF 11G0243 Interrupter, Photo 56P9691 Actuator, Resist 11G0219 Interrupter, Photo 56P9899 Sensor, Upper Transparency 11G0283 Pad, Framing 56P9681 Clutch, Registration 56P9680 Frame Assembly, Registration 56P9898 Sensor, Lower Transparency...
Page 406: Assembly 10: Electrical
5055-01X Assembly 10: Electrical 7-24 Service Manual...
Page 407 5055-01X Asm- Part Units Description Index Number 10 - 1 56P9705 Cable Assembly, Feeder 56P9704 Cable Assembly, Paper Remaining Sensor 56P9700 Solenoid Assembly, Paper Feed 11G0243 Interrupter, Photo 56P9702 Cable, Belt Up/Down Sensor 56P9701 Board, Sensor 56P9703 Cable Assembly, Sensor Board 56P9707 Switch, Power 56P9706...
Page 408 5055-01X Assembly 10: Electrical (Continued) 7-26 Service Manual...
Page 409 5055-01X Asm- Part Units Description Index Number 10 -29 56P9714 Board, High Voltage Power Supply 56P9727 Cable Assembly, Printer Controller Power 2 56P9726 Cable Assembly, Printer Controller Power 1 56P9724 Power Supply, 120 V (2) 56P9725 Power Supply, 230 V (2) 56P9715 Cable High Voltage Power Supply Board 11D0328...
Page 410: Assembly 11: Rip Board
5055-01X Assembly 11: Rip Board 7-28 Service Manual...
Page 411 5055-01X Asm- Part Units Description Index Number 11 - 1 56P9749 Cable Assembly, Power RIP 56P9916 Card, Riser 56P9897 Board, RIP Controller 56P9750 Fan, RIP 56P9745 Box, RIP 56P9719 Cable Assembly, 80 Pin RIP Printer Controller 56P9736 Cable, Operator Panel 56P9746 Cover, RIP Box 56P9747...
Page 412: Assembly 11: Rip Board (Continued)
5055-01X Assembly 11: RIP Board (Continued) 7-30 Service Manual...
Page 413 Software, Optra Forms Director 56P9928 DIMM, Lexmark Forms 4MB Flash 56P9929 DIMM, Lexmark Forms 8MB Flash 56P9930 DIMM, Lexmark Forms 16MB Flash 56P9932 Hard Disk, Lexmark Forms 5+ GB 56P9942 Mounting Kit, Hard Drive 56P9952 Parts Packet 7-31 Parts Catalog...
Page 414: Assembly 12: Fuser Unit
5055-01X Assembly 12: Fuser Unit 7-32 Service Manual...
Page 415 5055-01X Asm- Part Units Description Index Number 12 - 1 56P9751 Fuser, 120 V 56P9752 Fuser, 230 V 56P9953 Parts Packet 7-33 Parts Catalog...
Page 416: Assembly 13: Cassette
5055-01X Assembly 13: Cassette 7-34 Service Manual...
Page 417 5055-01X Asm- Part Units Description Index Number 13 - 1 56P9500 Cassette, Paper Feed 56P9761 Pawl, Rear 56P9754 Plate, Right Rear Location 56P9755 Spring, Location Plate 56P9753 Plate, Left Rear Location 56P9763 Spring, A Push Up 56P9764 Spring, B Push Up 56P9757 Locator, Front Side 56P9944...
Page 418: Assembly 14: Expansion Feeder 1
5055-01X Assembly 14: Expansion Feeder 1 7-36 Service Manual...
Page 419 5055-01X Asm- Part Units Description Index Number 14 - 1 56P9780 Guide, Wire 11G0199 Gear, Feeder E 56P9771 Gear, Feeder C 11G0422 Gear, Feeder B 56P9772 Gear, Feeder D 11G0423 Gear, Feeder A 56P9770 Cover, Right Side C 56P9769 Cover, Right Side B 56P9767 Cover, Right Side A 56P9765...
Page 420: Assembly 15: Expansion Feeder 2
5055-01X Assembly 15: Expansion Feeder 2 7-38 Service Manual...
Page 421 5055-01X Asm- Part Units Description Index Number 15 - 1 56P9796 Roller Assembly, Carrying 56P9514 Roller, Noise Reduction 56P9513 Bushing, Carrying 56P9509 Bushing, Metal 56P9790 Roller, Paper Carrying 56P9792 Holder, Roller 56P9791 Spring, Paper Carrying 56P9794 Spring, Right Turn Guide 56P9789 Guide, Turn 56P9517...
Page 422: Assembly 16: Duplex Unit 1
5055-01X Assembly 16: Duplex Unit 1 7-40 Service Manual...
Page 423 5055-01X Asm- Part Units Description Index Number 16 - 1 56P9798 Duplex Assembly 56P9804 Board, Duplex Interface 56P9799 Frame, Duplex 56P9800 Screw, Duplex Mounting 56P9803 Motor, Duplex Stepping 56P9525 Interrupter, Photo 56P9806 Cable Assembly, Paper Detection 56P9807 Cable Assembly, Duplex Interface 56P9805 Cable Assembly, Duplex Connection 7-41...
Page 424: Assembly 17: Duplex Unit 2
5055-01X Assembly 17: Duplex Unit 2 7-42 Service Manual...
Page 425 5055-01X Asm- Part Units Description Index Number 17 - 1 56P9825 Plate, Paper Re-Feed Drawer 56P9827 Guide, Rear Side 56P9826 Guide, Front Side 56P9830 Solenoid Assembly, Paper Re-feed 56P9814 Bearing, Release 56P9816 Spring, Re-feed Roller 56P9813 Roll, Release 56P9525 Interrupter Assembly, Photo 56P9828 Motor Assembly, Paper Guide 56P9808...
Page 426: Assembly 18: High Capacity Feeder 1
5055-01X Assembly 18: High Capacity Feeder 1 7-44 Service Manual...
Page 427 5055-01X Asm- Part Units Description Index Number 18 - 1 56P9838 Catch, Door 56P9835 Magnet, Latch 56P9837 Cover, Upper 56P9834 Cover, Upper Rear 56P9843 Cover, Lower Rear 56P9839 Cover, Right 56P9833 Cover, Front 56P9836 Fence, End 56P9940 Ring, Snap 56P9841 Cover Assembly, Upper 56P9840 Lever, Vertical Transport...
Page 428: Assembly 19: High Capacity Feeder 2
5055-01X Assembly 19: High Capacity Feeder 2 7-46 Service Manual...
Page 429 5055-01X Asm- Part Units Description Index Number 19 - 1 56P9846 Solenoid Assembly, Paper Pickup 56P9848 Clutch, Paper Feed 56P9844 Motor Assembly, Transport 56P9941 Arm, Pick-up 56P9501 Spring, Pressure 56P9528 Interrupter, Photo 56P9849 Roller, Manual Feed Pickup 56P9850 Roller, Manual Feed 56P9852 Limiter, Torque 56P9851...
Page 430: Assembly 20: High Capacity Feeder 3
5055-01X Assembly 20: High Capacity Feeder 3 7-48 Service Manual...
Page 431 5055-01X Asm- Part Units Description Index Number 20 - 1 56P9854 Sensor Assembly, Photo 56P9855 Interrupter, Photo 56P9529 Caster, HCF 56P9856 Spring, Tension 56P9857 Switch, Micro 56P9530 Switch, Push 56P9859 Connector, Inlet 56P9858 Connector, I/F 56P9853 Screw, Shoulder 56P9960 Parts Packet 7-49 Parts Catalog...
Page 432: Assembly 21: High Capacity Feeder 4
5055-01X Assembly 21: High Capacity Feeder 4 7-50 Service Manual...
Page 433 5055-01X Asm- Part Units Description Index Number 21 - 1 56P9541 Sensor, Resistor 56P9875 Cable Assembly, Safety Switch 56P9865 Cable Assembly, HCF Motor 56P9871 Cable Assembly, I/F 56P9866 Cable Assembly, Paper Feed Sensor 56P9880 Cable, Up/Down Switch 56P9879 Cable, Paper Volume 56P9878 Cable Assembly, Sensor 56P9877...
Page 434: Assembly 22: High Capacity Feeder 5
5055-01X Assembly 22: High Capacity Feeder 5 7-52 Service Manual...
Page 435 5055-01X Asm- Part Units Description Index Number 22 - 1 56P9883 Spring, Pressure 56P9528 Interrupter, Photo 56P9888 Bracket, Rear Idler 56P9884 Belt, Timing 56P9886 Gear, Drive 56P9885 Pulley, Timing 56P9882 Motor, HCF DC 56P9887 Bracket, Front Idler 56P9962 Parts Packet 7-53 Parts Catalog...
Page 436: Assembly 23: High Capacity Feeder 6
5055-01X Assembly 23: High Capacity Feeder 6 7-54 Service Manual...
Page 437 5055-01X Asm- Part Units Description Index Number 23 - 1 56P9892 Plate, Upper Side Fence 56P9893 Knob 56P9891 Knob, Tray 56P9890 Plate, Paper Adhesion 56P9915 Fence Assembly, Front Side 56P9894 Fence Assembly, Rear Side 56P9528 Interrupter, Photo 56P9889 Pad, Friction 56P9963 Parts Packet 7-55...
Page 438: Assembly 24: Finisher Covers
5055-01X Assembly 24: Finisher Covers 7-56 Service Manual...
Page 439 5055-01X Asm- Part Units Description Index Number 24-1 56P9353 Cover, Top 56P9348 Screw, A 56P9355 Cover, Front 56P9359 Tray, Upper 56P9360 Tray, Lower 56P9347 Panel, Left Upper 56P9352 Assembly, Lower Left Panel 56P9356 Cover, Rear 56P9350 Assembly, Staple Cover 56P9366 Lever, B 56P9365 Cover, Staple A...
Page 440: Assembly 25: Finisher Frame
5055-01X Assembly 25: Finisher Frame 7-58 Service Manual...
Page 441 5055-01X Asm- Part Units Description Index Number 25-1 56P9321 Spring, I 56P9324 Cable, Sensor Relay 56P9369 Assembly, Spring Plate C 56P9370 Frame, Guide 56P9371 Spring 56P9372 Brush, Static Discharge 56P9373 Screw, M4 56P9374 Frame, C Guide 56P9375 Shaft, D 56P9376 Bushing 56P9377 Roller, D...
Page 442: Assembly 25: Finisher Frame (Continued)
5055-01X Assembly 25: Finisher Frame (Continued) 7-60 Service Manual...
Page 443 5055-01X Asm- Part Units Description Index Number 25-29 56P9391 Assembly, Roller 56P9390 Plate, Cover 56P9436 Cable 56P9313 Unit, 3 Hole Punch (U.S. only) 56P9314 Unit, 4 Hole Punch (non U.S.) 56P9388 Sensor, 1 Photo 56P9320 Screw, B 56P9319 Assembly, Exit Guide Straight 56P9394 Knob 7-61...
Page 444: Assembly 26: Finisher Feed 1
5055-01X Assembly 26: Finisher Feed 1 7-62 Service Manual...
Page 445 5055-01X Asm- Part Units Description Index Number 26-1 56P9395 Assembly, Guide Plate 56P9393 Plate, Guide Holder 56P9334 Assembly, Solenoid 56P9396 Spring, H 56P9397 Gear, Z20 56P9398 Gear, Z19 56P9311 Bushing 56P9310 Gate 56P9400 Roller 56P9361 Roller, Patting 56P9401 Roller, I 56P9402 Bushing 56P9403...
Page 446: Assembly 26: Finisher Feed 1 (Continued)
5055-01X Assembly 26: Finisher Feed 1 (Continued) 7-64 Service Manual...
Page 447 5055-01X Asm- Part Units Description Index Number 26-31 56P9316 Bushing 56P9415 Pulley, GearZ36/T24 56P9317 Belt 56P9417 Flange 7-65 Parts Catalog...
Page 448: Assembly 27: Finisher Feed 2
5055-01X Assembly 27: Finisher Feed 2 7-66 Service Manual...
Page 449 5055-01X Asm- Part Units Description Index Number 27-1 56P9421 Unit, Jogging 56P9300 Assembly, Jogging Unit 56P9422 Pin, N 56P9423 Pulley, Z19/Z20 56P9417 Flange 56P9333 Belt, Timing (60S3M408) 56P9425 Roller, A 56P9316 Bushing, 6 56P9426 Assembly, Bracket H 56P9427 Spring, E 56P9428 Cable 56P9336...
Page 450: Assembly 27: Finisher Feed 2 (Continued)
5055-01X Assembly 27: Finisher Feed 2 (Continued) 7-68 Service Manual...
Page 451 5055-01X Asm- Part Units Description Index Number 27-28 56P9301 Assembly, Guide Stack 56P9384 Plate 56P9444 Motor, Jogging 56P9445 Cover, Motor 56P9446 Bracket, O 7-69 Parts Catalog...
Page 452: Assembly 28: Finisher Elevator
5055-01X Assembly 28: Finisher Elevator 7-70 Service Manual...
Page 453 5055-01X Asm- Part Units Description Index Number 28-1 56P9308 Assembly, Elevator Motor 56P9448 Washer 56P9449 56P9450 Pulley, Wire A 56P9451 Shutter 56P9452 Pin, O 56P9453 Roller, C 56P9304 Assembly, Hook Front 56P9332 Spring, C 56P9331 Wire 56P9455 Bracket 56P9456 Gear, Z46/Z33 56P9457 Gear, Z90/Z14 56P9458...
Page 454: Assembly 29: Finisher Electronics
5055-01X Assembly 29: Finisher Electronics 7-72 Service Manual...
Page 455 5055-01X Asm- Part Units Description Index Number 29-1 56P9306 Assembly, Upper Limit Sensor 56P9303 Supply, Power 56P9351 Assembly, Power Supply Plate 56P9435 Cable, Set Switch 56P9358 Cord, Y Power 56P9368 Cord, Y Power (230 V only) 56P9342 Assembly, Bridge 56P9326 Cable, DC Power Supply 56P9349 Board, Finisher Control...
Page 456: Assembly 30: Finisher Docking 1
5055-01X Assembly 30: Finisher Docking 1 7-74 Service Manual...
Page 457 5055-01X Asm- Part Units Description Index Number 30-1 56P9467 Screw, Thumb 56P9468 Spring 56P9469 Bracket 56P9470 Switch, Set 7-75 Parts Catalog...
Page 458: Assembly 31: Finisher Docking 2
5055-01X Assembly 31: Finisher Docking 2 7-76 Service Manual...
Page 459 5055-01X Asm- Part Units Description Index Number 31-1 56P9472 Screw, Lock 56P9473 Stud, Lock 56P9474 Roller 56P9475 Knob, Caster 56P9476 Stop, Caster 56P9477 Housing, Caster 56P9478 Caster 56P9479 7-77 Parts Catalog...
Page 460: Finisher Parts Packet P/N 56P9480
5055-01X Finisher Parts Packet P/N 56P9480 Retaining Ring -E Type Screw Spring Pin Screw Screw Tapping Screw Spring Lock Washer Tapping Screw Toothed Lock Washer Tapping Screw Resin Ring Tapping Screw Set Screw Tapping Screw 7-78 Service Manual...
Page 461 5055-01X Plain Washer Tapping Screw Screw 7-79 Parts Catalog...
Page 462 5055-01X 7-80 Service Manual...
Page 463: Index
5055-01X Index 1-33 Abbreviations Handling Printed Circuit Boards 3-12 Adjustments Hardware Tests 2-38 1-64 Attendance Messages HCF Sensor / Switch Test 5-15 High Capacity Feeder Diagram High Capacity Paper Feed 5-16 Configuration 3-30 Clearing the Error Log Component Locations Connectors 2-90 covers diagram Image Quality Troubleshooting...
Page 464 5055-01X 2-61 Empty" Message 8 - False "40 Tray (X) Size Sensor Removals 2-62 Error" Message 4-42 belt up/down clutch 9 - False "41 Open Bin 1 Exit Tray" 4-34 belt up/down detection sensor 2-62 Message 4-21 cassette guide Menu Overview 4-47 connector, duplex unit Menu Settings...
Page 465 5055-01X 4-17 inverter paper exit discharge multipurpose feeder tray 4-100 4-28 brush OHP detection sensor (lower) 4-23 inverter paper exit roller OHP detection sensor (upper) 4-94 4-28 paper carrying clutch 4-105 4-28 jogging unit paper carrying frame 4-18 path select gate removal paper carrying roller 4-98 4-28...
Page 466 5055-01X 1-48 Service Checks clearing paper jams 2-71 1-43 drive 1 DC motor delivery 2-71 1-35 drive 2 stepper motor development unit 2-72 1-37 duplex drive system 2-72 1-46 expansion paper feed duplex unit 2-73 1-34 face down stacker full electrophotography process 2-73 1-45...
Page 467 5055-01X 7-7, 7-23, 7-39 7-59 11G0219 56P9327 7-5, 7-17, 7-23, 7-25 7-67 11G0243 56P9328 7-23 7-67 11G0283 56P9329 7-35 7-71 11G0284 56P9331 7-39 7-71 11G0291 56P9332 7-39 7-67 11G0297 56P9333 7-63 11G0347 56P9334 7-35 7-63 11G0385 56P9335 7-37 7-67 11G0399 56P9336 7-37 7-63...
Page 468 5055-01X 7-59 7-67 56P9378 56P9429 7-59 7-67 56P9379 56P9430 7-59 7-67 56P9380 56P9431 7-59 7-67 56P9381 56P9433 7-59, 7-71 7-67 56P9382 56P9434 7-59 7-73 56P9383 56P9435 7-59, 7-69 7-61 56P9384 56P9436 7-59 7-67 56P9386 56P9437 7-59 7-67 56P9387 56P9438 7-61 7-67 56P9388 56P9439...
Page 469 5055-01X 7-39 56P9506 56P9561 7-17, 7-39 56P9507 56P9562 7-17, 7-39 56P9508 56P9563 7-39 56P9509 56P9564 7-39 56P9510 56P9565 7-17, 7-39 56P9511 56P9566 7-17 56P9512 56P9567 7-39 56P9513 56P9568 7-39 56P9514 56P9569 7-17, 7-39 56P9515 56P9570 7-17, 7-39 56P9516 56P9571 7-17, 7-39 56P9517 56P9572 7-17, 7-39...
Page 470 5055-01X 7-15 7-17 56P9610 56P9665 7-13 7-21 56P9611 56P9666 7-13 7-21 56P9612 56P9667 7-13 7-21 56P9613 56P9668 7-13 7-21 56P9614 56P9669 7-13 7-21 56P9615 56P9670 7-13 7-21 56P9616 56P9671 7-13 7-21 56P9617 56P9672 7-13 7-21 56P9618 56P9673 7-15 7-23 56P9619 56P9674 7-13 7-23...
Page 471 5055-01X 7-25 7-37 56P9713 56P9765 7-27 7-37 56P9714 56P9766 7-27 7-37 56P9715 56P9767 7-13 7-37 56P9716 56P9768 7-13 7-37 56P9717 56P9769 7-13 7-37 56P9718 56P9770 7-29 7-37 56P9719 56P9771 7-13 7-37 56P9720 56P9772 7-25 7-37 56P9722 56P9774 7-25 7-37 56P9723 56P9775 7-27 7-37...
Page 472 5055-01X 7-43 7-51 56P9815 56P9865 7-43 7-51 56P9816 56P9866 7-43 7-51 56P9817 56P9867 7-43 7-51 56P9818 56P9868 7-43 7-51 56P9819 56P9869 7-43 7-51 56P9820 56P9870 7-43 7-51 56P9821 56P9871 7-43 7-51 56P9822 56P9872 7-43 7-51 56P9823 56P9873 7-43 7-51 56P9824 56P9874 7-43 7-51...
Page 473 5055-01X 7-31 56P9928 7-31 56P9929 7-31 56P9930 7-31 56P9932 7-29 56P9934 7-29 56P9938 7-45 56P9940 7-47 56P9941 7-31 56P9942 7-25 56P9943 7-35 56P9944 56P9945 7-11 56P9946 7-15 56P9947 7-19 56P9948 7-21 56P9949 7-23 56P9950 7-27 56P9951 7-31 56P9952 7-33 56P9953 7-35 56P9954 7-37...
Page 474 5055-01X I-12 Service Manual...

Lexmark C910 Service Manual

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5055-01X

5055-01X

Diagnostic Information

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5055-01X

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5055-01X

5055-01X

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