Lexmark X125 Service Manual
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Lexmark X125 Service Manual

Lexmark X125 Service Manual

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Lexmark X125
All-In-One
4412-00X
• 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.

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Summary of Contents for Lexmark X125

  • Page 1 Lexmark X125 All-In-One 4412-00X • 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

    4412-00X Table of Contents Safety Information........v Preface .
  • Page 4 4412-001 Releasing Plastic Latches ......4-2 Removals ......... . .4-3 General Precautions on Removals.

  • Page 5: Safety Information

    4412-00X Safety Information • The safety of this product is based on testing and approvals of the original design and specific components. The manufacturer is not responsible for safety in the event of use of unauthorized replacement parts. • The maintenance information for this product has been prepared for use by a professional service person and is not intended to be used by others.
  • Page 6 4412-00X Norme di sicurezza • La sicurezza del prodotto si basa sui test e sull'approvazione del progetto originale e dei componenti specifici. Il produttore non è responsabile per la sicurezza in caso di sostituzione non autorizzata delle parti. • Le informazioni riguardanti la manutenzione di questo prodotto sono indirizzate soltanto al personale di assistenza autorizzato.
  • Page 7 4412-00X Pautas de Seguridad • La seguridad de este producto se basa en pruebas y aprobaciones del diseño original y componentes específicos. El fabricante no es responsable de la seguridad en caso de uso de piezas de repuesto no autorizadas. •...
  • Page 8 4412-00X Informació de Seguretat • La seguretat d'aquest producte es basa en l'avaluació i aprovació del disseny original i els components específics. El fabricant no es fa responsable de les qüestions de seguretat si s'utilitzen peces de recanvi no autoritzades. •...
  • Page 9 4412-00X Safety Information...

  • Page 10: Preface

    4412-00X Preface This manual and contains maintenance procedures for service personnel. It is divided into the following chapters: 1. General Information contains a general description of the printer and the maintenance approach used to repair it. Special tools and test equipment are listed in this chapter, as well as general environmental and safety instructions.

  • Page 11: General Information

    4412-00X 1. General Information The Lexmark™ X125 All-In-One (4412-00X) is a letter quality print, fax, copy, and scan machine. The printhead uses small heater plates and nozzles to control ink flow and the formation of characters on the print media. The printhead assembly and ink supply are combined into a single unit.

  • Page 12: Specifications

    4412-00X Specifications Printer Engine Technology Thermal Inkjet 2-pin and printhead swapping type Speed Color 8 ppm at Draft Mode Mono 16 ppm at Draft Mode Resolution Color 600 X 600 dpi (1200 X 2400 dpi addressable) Mono 600 X 600 dpi (1200 X 2400 dpi addressable) Printing Width 203 mm...

  • Page 13: Facsimile

    4412-00X Facsimile General Compatibility ITU-G3 Scan Method Scan Width Maximum 216 mm, Effective 210 mm Scan Resolution 600 X 1200 dpi Scan Speed 6 seconds Feeding Method Sheet Feed 30 sheets of 20 lb Guide Document Input Guide Stacker Document Output Stacker/Paper Stacker Paper Tray Bin Type (without Manual Tray)
  • Page 14 4412-00X Telephone Speed Dial 70 locations Chain Dial On-Hook Dial Yes, 1-Key Last Number Redial Yes, 1-Key Auto Redial Hold and Mute Pause Yes, use Redial Key Ringer Volume S/W Option Setting (4 steps) Tone/Pulse Select S/W Option Setting DRPD USA: Yes, Other Countries: Yes Report and TX/RX Journal...

  • Page 15: Scanner

    4412-00X Scanner Compatibility TWAIN Technology Platen CIS Light Source for Color CIS RGB LEDs (Line Order Control) Power and Size Power Source 110V-240V / 50Hz-60Hz Dimensions 440.6 X 319.6 X 205.4 mm Weight (Packed) 15.3 lbs (Packed Weight) Abbreviations Auto Sheet Feed Bill of Material Contact Image Sensor End of Form...
  • Page 16 4412-00X Service Manual...

  • Page 17: Diagnostic Information

    4412-00X 2. Diagnostic Information Start Power-On Self Test (POST) Sequence 1. Power Up Please Wait is displayed on the LCD. 2. Carrier moves to the left and the paper feed motor runs then stops. 3. Carrier returns to the right. 4.

  • Page 18: Post Symptom Table

    4412-00X POST Symptom Table Symptom Action LCD or operator Go to the “Power Service Check” on page 2-15. If okay, panel buttons do go to the “Operator Panel Problems” on page 2-3. not work and no motors run Paper feed Go to the “Paper Feed Service Check”...

  • Page 19: Symptom Tables

    4412-00X Symptom Tables Locate the symptom in the following tables and take the appropriate action. Carrier Transport Problems Symptom Action • No carrier movement Go to the “Carrier Transport • Slow carrier movement Service Check” on page 2-7. • Carrier stops •...
  • Page 20 4412-00X Symptom Action Document scan sensor does not Check operator panel cable detect document connector P9 on the system board. If okay, go to the “Scanner Motor with Gear Assembly Service Check” on page 2-10. If the scanner motor is working correctly, replace the operator panel assembly.
  • Page 21 4412-00X Printer Communication Problem Symptom Action Not able to print Self Test Page Check the USB cable and system board cable connections. If okay, replace system board. Go to the “System Board Removal” on page 4-19. Scanner Problems Symptom Action Light does not turn on Go to the “CIS Assembly Service...
  • Page 22 4412-00X Paper Feed Problems Symptom Action • Fails to pick paper Go to the “Paper Feed Service • Picks more than one sheet of Check” on page 2-12. paper • Picks paper but fails to feed • Paper jams • Paper fails to exit •...

  • Page 23: Service Checks

    4412-00X Service Checks Carrier Transport Service Check Action System Board Check the carrier transport motor connector P4. If connected, check for approximately 29 volts on Carrier Transport pins 1 and 2 or at the wire connections located on Motor the rear of the carrier transport motor. If voltage is incorrect, replace the system board.
  • Page 24 4412-00X Action Encoder Strip Check the encoder strip for proper installation. Also, check it for wear, dirt, and grease. Replace if Carrier Assembly needed. with Belt Be sure all printhead connectors are fully seated. Check the cables for damage. If the encoder strip and all connections are okay, but the carrier still slams the side frame, replace the carrier assembly with belt.

  • Page 25: Cis Assembly Service Check

    4412-00X CIS Assembly Service Check The CIS lamp does not light when scanning is in process. Action CIS Assembly If light does not come on during the scanning process, check connector P2 on the system board. If the connection is okay, check for a voltage reading of approximately 4 volts from ground to P2-2 pin.

  • Page 26: Scanner Motor With Gear Assembly Service Check

    4412-00X Scanner Motor with Gear Assembly Service Check Motor will not run. Action Scanner Motor with Gear Check scanner motor for shorts. Assembly Disconnect connector P6 from the system board and check for approximately 6 ohms between the following pins on the motor connector.

  • Page 27: Maintenance Station Service Check

    4412-00X Maintenance Station Service Check The maintenance station has three functions: 1. Wipes the printhead nozzles to clean them of dirt. 2. Provides a place for printheads to fire all nozzles, keeping them clear prior to printing. 3. Seals the printhead when it is not being used to prevent the nozzles from drying.

  • Page 28: Paper Feed Service Check

    4412-00X Paper Feed Service Check If your machine does not have paper jam problems, continue with the service check. If your machine does have a paper jam, examine it for the following before you begin the service check: • Check the entire paper path for obstructions. •...
  • Page 29 4412-00X Action Paper Feed Motor A noisy or chattering motor or a motor that fails to turn, can be caused by: • An open or short in the motor • An open or short in the motor driver on the system board •...

  • Page 30: Paper Path Service Check

    4412-00X Paper Path Service Check Examine the machine for the following before you begin this service check: • Check the entire paper path for obstructions. • Be sure the correct type of paper is being used. • Be sure the printer is installed on a flat surface. Action Large and Small Check for wear and binds.

  • Page 31: Power Service Check

    4412-00X Power Service Check Action Power Supply Plug the machine into an outlet. Check for approximately 30 V dc at P1 pin 3. Check connector (CON1) at the power supply. If voltage is incorrect, replace the power supply. Printhead Cables Unplug the printer.

  • Page 32: Print Quality Service Check

    4412-00X Print Quality Service Check FRU / Function Action Printhead Be sure the machine contains good print Cartridge cartridges. Color Printhead Cross contamination of color inks results in Cartridge Cross incorrect colors printed, as when green prints for Contamination yellow, (when yellow and blue are mixed in the printhead cartridge).
  • Page 33 4412-00X FRU / Function Action Paper Feed Ink smudging and smearing can be caused by paper problems or problems in the paper feed area. Check the following: • Correct type of paper is being used. Also check the paper for curl or wrinkles. •...

  • Page 34: Scan/Copy Quality Service Check

    4412-00X Scan/Copy Quality Service Check FRU / Function Action Scanned images Check the lighter/darker settings to see if it is are faded, or correct. colors are dull, blurry, or fuzzy. • From the operator panel Images are • From the Scan & Copy Control Program slanted or crooked and the straight lines in...

  • Page 35: Fax/Telephone Communication Service Check

    4412-00X Fax/Telephone Communication Service Check FRU / Function Action Line Interface No dial tone Board or System Board Verify correct dialing method (tone or pulse). Are TEL and LINE connections reversed? Verify phone Cannot make number and availability of other fax machine. telephone connection to Before dialing, press Speaker so you can hear the...
  • Page 36 4412-00X 2-20 Service Manual...

  • Page 37: Diagnostic Aids

    4412-00X 3. Diagnostic Aids Theory of Mechanism Scanner Mechanism The scanner mechanism consists of components which feed, scan, and eject the documents that are to be copied or transmitted to a remote facsimile unit. These components and their functions are explained below.

  • Page 38: Contact Image Sensor (Cis)

    4412-00X Contact Image Sensor (CIS) The contact image sensor unit consist of LEDs, rod lens array, and a photo sensor. The LEDs illuminate the document to be scanned when the leading edge is detected by the document scan sensor. The LEDs turn off when the document exits the scanner mechanism. The LEDs illuminate the document to obtain an image from the document through the rod lens array, where the image is translated into voltage levels.
  • Page 39 4412-00X Setting up System in User Mode Setup Item Default Date Jan/01/01 Month - Day - Year Jan/01/01 Time 12:00:00P Hour - Minute - AM/PM 12:00 PM Print Report Fax Confirm Transmit Log Receive Log Speed Send List Self Test Maintenance Cartridge Clean Cartridge Align...
  • Page 40 4412-00X Setting up System in Service Mode Setup Item Default CIS Test Red, Green, and Blue maximum and minimum peak levels Aging Test Scanner Aging/ Printer Aging Print Report Fax Confirm Transmit Log Receive Log Speed Send List Self Test Protocol Dump ASF Test System Data...
  • Page 41 4412-00X Setup Item Default DTMF Test ROM Test Modem Speed Item FSK/2400/4800/7200/ 33600 bps (1-6) 9600/112000/14400/ 33600/12000/9600/ 7200/4800/2400 Set TX Level (1-15) Set RX Level (40-50) Pause Time (1-9) CIS Test The test adjusts the light of CIS. It is already set at CIS Test to get optimum quality.
  • Page 42 4412-00X Maintenance 1. Press Setup. 2. Press Menu until ‘Maintenance’ displays. 3. Press Options to select, cartridge clean, cartridge align and scanner init. 4. Press Start after you select. Program Download 1. Press Setup. 2. Press Menu four times until ‘Program Download Press Start’ is displayed.
  • Page 43 4412-00X 3. Press Options to print the journal automatically after every 40 transmissions or receptions (Yes). Press Options to print journal manually (No). Remote RCV Code The remote receive code lets you initiate fax received from an extension phone plugged into the EXT jack. If you pick up the extension phone and hear fax tones, enter the remote receive code and the fax starts receiving.
  • Page 44 4412-00X Auto Reduction When receiving a document as long or longer than the paper installed in your machine, the machine can reduce the data in the document to fit into your recording paper size. Turn on this feature if you want to reduce an incoming page that may otherwise need to be divided into two pages with only a small portion on the second page.
  • Page 45 4412-00X Retry Count 1. Press Setup. 2. Press Menu until ‘Retry Count’ displays. 3. Enter the number of attempts (from 1 to 2) to redial the number. If you enter 0, the machine does not redial. Answer On Rings You can select the number of times your machine rings before answering an incoming call.
  • Page 46 4412-00X Modem Test The modem sends various transmit signals on the telephone line. You can check the following: – FSK – Tones: 1100Hz, 1650Hz, 1850Hz, 2100Hz – G3 training: 33600, 31200, 28800, 26400, 21600, 14400, 12000, 9600, 7200, 4800, 2400 bps 1.
  • Page 47 4412-00X 12000 bps, the RX speed is either V.17 or V.33. When the TX speed is set to 9600 or 7200 bps, the RX speed is V.29 or V.27. When the TX speed is set to 4800 or 2400 bps, the RX speed is V.27. 1.
  • Page 48 4412-00X 3-12 Service Manual...

  • Page 49: Repair Information

    4412-00X 4. Repair Information This chapter explains how to make adjustments to the printer and how to remove defective parts. Note: Read the following before handling electronic parts. Handling ESD-Sensitive Parts Many electronic products use parts that are known to be sensitive to electrostatic discharge (ESD).

  • Page 50: Adjustments

    4412-00X Adjustments The user is directed, in the Printer Control program, to perform the bidirectional alignment adjustments after replacing a print cartridge. Removal Procedures The following procedures are arranged according to the name of the printer part discussed. CAUTION: Unplug the power cord before removing any parts. Releasing Plastic Latches Many of the parts are held in place with plastic latches.

  • Page 51: Removals

    4412-00X Removals General Precautions on Removals When you disassemble and reassemble components, use extreme caution. The close proximity of cables to moving parts makes proper routing a must. If components are removed or replaced, any cables disturbed must be replaced as close as possible to their original positions.

  • Page 52: Cis White Roller Assembly Removal

    4412-00X CIS White Roller Assembly Removal 1. Open the operator panel. 2. Push the bushing on both ends of the roller slightly inward, and then rotate it until it reaches the slot as shown. Lift the roller out. Note: If the roller is dirty. If dirty, wipe it with a soft cloth dampened with water.

  • Page 53: Top Cover Assembly Removal

    4412-00X Top Cover Assembly Removal 1. Open the operator panel and open the print cartridge compartment cover. Remove the white roller assembly. Remove the six screws as shown. 2. Remove the three screws as shown and remove the top cover assembly.

  • Page 54: Rollers (Drive Feed Roller Assembly, Exit Shaft) Removal

    4412-00X Rollers (Drive Feed Roller Assembly, Exit Shaft) Removal 1. Remove the top cover assembly. See “Top Cover Assembly Removal” on page 4-5. 2. Take out the rollers from the base assembly. Note: Clean the surface of the rollers with ethyl alcohol. After wiping them, you must dry them completely.

  • Page 55: Cis (Contact Image Sensor) Removal

    4412-00X CIS (Contact Image Sensor) Removal 1. Remove the top cover assembly. See “Top Cover Assembly Removal” on page 4-5. 2. Remove the drive feed roller. See “Rollers (Drive Feed Roller Assembly, Exit Shaft) Removal” on page 4-6. 3. Remove one screw securing the CIS assembly and unplug the CIS harness.
  • Page 56 4412-00X 4. Turn the CIS assembly over. Remove one screw to release the CIS from the bracket. Note: Be careful not to lose the springs. Note: Check the glassy surface of the CIS for any stain or scratch. If stained, wipe off with ethyl alcohol. If it is heavily stained or scratched, replace it.

  • Page 57: Scanner Motor With Gear Assembly Removal

    4412-00X Scanner Motor with Gear Assembly Removal 1. Remove the top cover assembly. See “Top Cover Assembly Removal” on page 4-5. 2. Unplug the motor connector from the system board. Make sure the harness is released from hooks securing the harness as shown.
  • Page 58 4412-00X 3. Remove two screws as shown and remove the scan motor assembly. 4. Remove the two screws securing the motor to the motor bracket. 4-10 Service Manual...

  • Page 59: Power Supply Removal

    4412-00X Power Supply Removal 1. Remove the top cover assembly. See “Top Cover Assembly Removal” on page 4-5. 2. Remove screw from left side and the ground wire on the right. 3. Disconnect connector CON1 from power supply. 4. Lift up and remove. 4-11 Repair Information...

  • Page 60: Line Interface Board Removal

    4412-00X Line Interface Board Removal 1. Remove the top cover assembly. See “Top Cover Assembly Removal” on page 4-5. 2. Remove the one screw securing the ground wires to the bracket. 3. Unplug the line interface connector from the line interface board.

  • Page 61: Operator Panel Assembly Removal

    4412-00X Operator Panel Assembly Removal 1. Remove the top cover assembly. See “Top Cover Assembly Removal” on page 4-5. 2. Disconnect the operator panel cable from the system board. 3. Release harness from harness hook. 4. Remove the two ground strap screws. 5.

  • Page 62: Printer Unit Removal

    4412-00X Printer Unit Removal 1. Remove the top cover assembly. See “Top Cover Assembly Removal” on page 4-5. 2. Remove the paper support extension. 3. Release lower paper guide tabs. 4. Release upper paper guide tab. 5. Remove the paper guide. 6.

  • Page 63: Asf Assembly Removal

    4412-00X 8. Remove ground strap screw. Note: When you reassemble the unit, do not pinch or short the wire harness. ASF Assembly Removal 1. Remove the top cover assembly. See “Top Cover Assembly Removal” on page 4-5. 2. Remove paper support extension. 3.
  • Page 64 4412-00X 11. Remove ASF assembly. 4-16 Service Manual...

  • Page 65: Maintenance Station Removal

    4412-00X Maintenance Station Removal 1. Remove the printer unit. 2. Remove one screw. 3. Release two tabs from the rear of the maintenance station and remove the maintenance station. 4-17 Repair Information...

  • Page 66: Carrier Assembly With Belt Removal

    4412-00X Carrier Assembly with Belt Removal 1. Remove the printer unit. See “Printer Unit Removal” on page 4-14. 2. Disconnect the carrier cables from the system board. 3. Release tab on carrier cable guide. 4. Release carrier cable guide from frame. 5.

  • Page 67: System Board Removal

    4412-00X System Board Removal 1. Remove the top cover assembly. See “Top Cover Assembly Removal” on page 4-5. 2. Remove two screws securing the system board. 3. Unplug all connectors. 4. Pull the sensor lever toward you and remove the system board. 4-19 Repair Information...

  • Page 68: Mid Frame Assembly With Exit Rollers Removal

    4412-00X Mid Frame Assembly with Exit Rollers Removal 1. Remove the top cover. See “Top Cover Assembly Removal” on page 4-5. 2. Remove the carrier assembly. 3. Remove the maintenance station. 4. Remove the encoder strip. 5. Remove two screws from friction roller assembly. 6.

  • Page 69: Large Feed Roller Assembly With Gear Removal

    4412-00X Large Feed Roller Assembly with Gear Removal 1. Remove the printer unit. See “Printer Unit Removal” on page 4-14. 2. Remove the mid frame assembly. See “Mid Frame Assembly with Exit Rollers Removal” on page 4-20. 3. Remove the maintenance station. 4.

  • Page 70: Paper Feed Motor Assembly With Gears Removal

    4412-00X Paper Feed Motor Assembly with Gears Removal 1. Remove the printer unit. See “Printer Unit Removal” on page 4-14. 2. Remove the large feed roller assembly. See “Large Feed Roller Assembly with Gear Removal” on page 4-21. 3. Remove the two screws and remove the paper feed motor assembly.

  • Page 71: Carrier Transport Motor Removal

    4412-00X Carrier Transport Motor Removal 1. Remove the top cover assembly. Go to the “Top Cover Assembly Removal” on page 4-5. 2. Manually move the carrier to the center of the machine. 3. Remove the idler pulley assembly spring cover retainer. 4.
  • Page 72 4412-00X 4-24 Service Manual...

  • Page 73: Connector Locations

    4412-00X 5. Connector Locations System Board Units Description Power Supply Carrier Motor Paper Feed Motor Scanner Motor Carrier Cable Line Interface Board Operator Panel Speaker Door Switch Connector Locations...

  • Page 74: Line Interface Board

    4412-00X Line Interface Board Units Description System Board Service Manual...

  • Page 75: Power Supply

    4412-00X Power Supply Units Description CON1 System Board Connector Locations...
  • Page 76 4412-00X Service Manual...

  • Page 77: Preventive Maintenance

    4412-00X 6. Preventive Maintenance This chapter contains the lubrication specifications. Follow these recommendations to prevent problems and maintain optimum performance. Lubrication Specifications Lubricate only when parts are replaced or as needed, not on a scheduled basis. Use grease P/N 99A0394 to lubricate the following: •...
  • Page 78 4412-00X Service Manual...

  • Page 79: Parts Catalog

    4412-00X 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 80 4412-00X Assembly 1: Main Assembly Service Manual...
  • Page 81 4412-00X Assembly 1: Main Assembly Asm- Part Units Description Index Number Support, Paper Extension 56P1151 Guide, Paper Deflector, Paper 56P1154 Cover, Top Assembly CIS White Roller Assembly 56P1155 Tray, Paper Exit Assembly 56P1156 Tray, Scan Exit Assembly Screw/Rings Parts Packet 56P1160 Panel, Operator Assembly Parts Catalog...
  • Page 82 4412-00X Assembly 2: Base Unit Service Manual...

  • Page 83: Index

    4412-00X Assembly 2: Base Unit Asm- Part Units Description Index Number Phone Line Cord Power Line Cord 56P1157 Board, Line Interface 56P1180 Board, Line Interface (EMEA) 56P1181 Board, Line Interface (Taiwan) 56P1182 Board, Line Interface (PRC) 56P1158 Power Supply 56P1161 Base Assembly 56P1164 Motor, Scanner with Gear Assembly...
  • Page 84 4412-00X Assembly 3: Engine Service Manual...
  • Page 85 4412-00X Assembly 3: Engine Asm- Part Units Description Index Number 56P1167 ASF Assembly 12G6961 Small Feed Roller Assembly with EOF and Springs 56P1159 System Board Main Frame Assembly with Encoder Clip 56P1169 Cable, Transport Carrier Motor 56P1168 Motor, Carrier Transport Spring, Carrier Shaft Retainer 12G6956 Maintenance Station Assembly...
  • Page 86 4412-00X Service Manual...
  • Page 87 4412-00X Index Plastic Latches POST Abbreviations Power Supply Adjustments Preventive Maintenance Aging Test Print Report Answer On Rings Print RTI Auto Journal Problems Auto Reduction Carrier Transport Maintenance Station Operator Panel CIS Test Paper Feed Connector Locations Power Contact Image Sensor Print Quality Printer Communication Scanner...
  • Page 88 4412-00X 56P1155 56P1156 Safety Information 56P1157 Service Checks 56P1158 Carrier Transport 56P1159 CIS Assembly 56P1160 Maintenance Station 2-11 56P1161 Paper Feed 2-12 56P1162 Paper Path 2-14 56P1164 Power 2-15 56P1165 Print Quality 2-16 56P1167 Scan/Copy Quality 2-18 56P1168 Scanner Motor 2-10 56P1170 Service Mode...

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