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All-In-One 4400-001 Service Manual
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Lexmark X63
All-In-One
4400-001
· 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.
4400-001
Edition: September, 2001 The following paragraph does not apply to any country where such provisions are inconsistent with local law: LEXMARK INTERNATIONAL, INC. PROVIDES THIS PUBLICATION "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer of express or implied warranties in certain transactions; therefore, this statement may not apply to you. This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in later editions. Improvements or changes in the products or the programs described may be made at any time. Comments may be addressed to Lexmark International, Inc., Department D22A/032-2, 740 West New Circle Road, Lexington, Kentucky 40550, U.S.A or e-mail at [email protected]. Lexmark may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you. 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. Other trademarks are the property of their respective owners. © Copyright Lexmark International, Inc. 2001. All rights reserved. UNITED STATES GOVERNMENT RESTRICTED RIGHTS This software and documentation are provided with RESTRICTED RIGHTS. Use, duplication or disclosure by the Government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013 and in applicable FAR provisions: Lexmark International, Inc., Lexington, KY 40550.
P/N 12G9074
4400-001
Table of Contents
Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Printer Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Printhead. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Facsimile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scanner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power and Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1-2 1-2 1-3 1-5 1-5 1-5
Diagnostic Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Power-On Self Test (POST) Sequence . . . . . . . . . . . . . . . . . 2-1 POST Symptom Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Symptom Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Service Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7 Carrier Transport Service Check. . . . . . . . . . . . . . . . . . . . . . . 2-7 CIS Assembly Service Check . . . . . . . . . . . . . . . . . . . . . . . . . 2-9 Scanner Motor with Gear Assembly Service Check . . . . . . . 2-10 Maintenance Station Service Check . . . . . . . . . . . . . . . . . . . 2-11 Paper Feed Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12 Paper Path Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14 Power Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15 Print Quality Service Check . . . . . . . . . . . . . . . . . . . . . . . . . 2-16 Scan/Copy Quality Service Check . . . . . . . . . . . . . . . . . . . . 2-18 Fax/Telephone Communication Service Check . . . . . . . . . . 2-19 Diagnostic Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Theory of Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scanner Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Drive Feed Roller Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . Contact Image Sensor (CIS) . . . . . . . . . . . . . . . . . . . . . . . . . . Document Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3-1 3-1 3-2 3-2
Repair Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Handling ESD-Sensitive Parts . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 Removal Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
iii
4400-001 Releasing Plastic Latches . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2 Removals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3 General Precautions on Removals. . . . . . . . . . . . . . . . . . . . . .4-3 CIS White Roller Assembly Removal . . . . . . . . . . . . . . . . . . . .4-4 Top Cover Assembly Removal. . . . . . . . . . . . . . . . . . . . . . . . .4-5 Rollers (Drive Feed Roller Assembly, Exit Shaft) Removal . . .4-6 CIS (Contact Image Sensor) Removal . . . . . . . . . . . . . . . . . . .4-7 Scanner Motor with Gear Assembly Removal . . . . . . . . . . . . .4-9 Power Supply Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-11 Line Interface Board Removal . . . . . . . . . . . . . . . . . . . . . . . .4-13 Operator Panel Assembly Removal . . . . . . . . . . . . . . . . . . . .4-15 Printer Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-16 ASF Assembly Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-17 Maintenance Station Removal . . . . . . . . . . . . . . . . . . . . . . . .4-19 Carrier Assembly with Belt Removal . . . . . . . . . . . . . . . . . . .4-20 System Board Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-21 Mid Frame Assembly with Exit Rollers Removal . . . . . . . . . .4-22 Large Feed Roller Assembly with Gear Removal . . . . . . . . .4-23 Paper Feed Motor Assembly with Gears Removal . . . . . . . .4-24 Carrier Transport Motor Removal. . . . . . . . . . . . . . . . . . . . . .4-25 Connector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1 System Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1 Logic Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3 Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1 Lubrication Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1 Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1 How to Use This Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . . . .7-1 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-1
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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. The maintenance information for this product has been prepared for use by a professional service person and is not intended to be used by others. There may be an increased risk of electric shock and personal injury during disassembly and servicing of this product. Professional service personnel should understand this and take necessary precautions.
· ·
Consignes de Sécurité
· Ce produit a été conçu, testé et approuvé pour respecter les
normes strictes de sécurité globale lors de l'utilisation de composants Lexmark spécifiques. Les caractéristiques de sécurité de certains éléments ne sont pas toujours évidentes. Lexmark ne peut être tenu responsable de l'utilisation d'autres pièces de rechange. Les consignes d'entretien et de réparation de ce produit s'adressent uniquement à un personnel de maintenance qualifié. Le démontage et l'entretien de ce produit pouvant présenter certains risques électriques, le personnel d'entretien qualifié devra prendre toutes les précautions nécessaires.
· ·
Safety Information v
4400-001
Norme di sicurezza
· Il prodotto è stato progettato, testato e approvato in conformità a
severi standard di sicurezza e per l'utilizzo con componenti 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. Le informazioni riguardanti la manutenzione di questo prodotto sono indirizzate soltanto al personale di assistenza autorizzato. Durante lo smontaggio e la manutenzione di questo prodotto, il rischio di subire scosse elettriche e danni alla persona è più elevato. Il personale di assistenza autorizzato, deve, quindi, adottare le precauzioni necessarie.
· ·
Sicherheitshinweise
· Dieses Produkt und die zugehörigen Komponenten wurden
entworfen und getestet, um beim Einsatz die weltweit gültigen Sicherheitsanforderungen zu erfüllen. Die sicherheitsrelevanten Funktionen der Bauteile und Optionen sind nicht immer offensichtlich. Sofern Teile eingesetzt werden, die nicht von Lexmark sind, wird von Lexmark keinerlei Verantwortung oder Haftung für dieses Produkt übernommen. Die Wartungsinformationen für dieses Produkt sind ausschließlich für die Verwendung durch einen Wartungsfachmann bestimmt. Während des Auseinandernehmens und der Wartung des Geräts besteht ein zusätzliches Risiko eines elektrischen Schlags und körperlicher Verletzung. Das zuständige Fachpersonal sollte entsprechende Vorsichtsmaßnahmen treffen.
· ·
vi Service Manual
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Pautas de Seguridad
· Este producto se ha diseñado, verificado y aprobado para
cumplir los más estrictos estándares de seguridad global usando los componentes específicos de Lexmark. Puede que las características de seguridad de algunas piezas no sean siempre evidentes. Lexmark no se hace responsable del uso de otras piezas de recambio. La información sobre el mantenimiento de este producto está dirigida exclusivamente al personal cualificado de mantenimiento. Existe mayor riesgo de descarga eléctrica y de daños personales durante el desmontaje y la reparación de la máquina. El personal cualificado debe ser consciente de este peligro y tomar las precauciones necesarias.
· ·
Informações de Segurança
· Este produto foi concebido, testado e aprovado para satisfazer
os padrões globais de segurança na utilização de componentes específicos da 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 utilizadas por outras pessoas. Risco de choques eléctricos e ferimentos graves durante a desmontagem e manutenção deste produto. Os profissionais destes serviços devem estar avisados deste facto e tomar os cuidados necessários.
· ·
Safety Information vii
4400-001
Informació de Seguretat
· Aquest producte està dissenyat, comprovat i aprovat per tal
d'acomplir les estrictes normes de seguretat globals amb la utililització de components específics de 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 orientada exclusivament a professionals i no està destinada a ningú que no ho sigui. El risc de xoc elèctric i de danys personals pot augmentar durant el procés de desmuntatge i de servei d'aquest producte. El personal professional ha d'estar-ne assabentat i prendre les mesures convenients.
· ·
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Safety Information ix
4400-001
Preface
This manual 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. 2. Diagnostic Information contains an error indicator table, symptom tables, and service checks used to isolate failing field replaceable units (FRUs). 3. Diagnostic Aids contains tests and checks used to locate or repeat symptoms of printer problems. 4. Repair Information provides instructions for making printer adjustments and removing and installing FRUs. 5. Connector Locations uses illustrations to identify the connector locations and test points on the printer. 6. Preventive Maintenance contains the lubrication specifications and recommendations to prevent problems. 7. Parts Catalog contains illustrations and part numbers for individual FRUs.
x Service Manual
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1. General Information
The LexmarkTM X63 All-In-One 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. Print cartridges are available as a customer replaceable supply item. Dual printheads provide color and true black printing without changing printheads. The number and size of inkjets or nozzles, in the printhead, determines the overall quality and capability of the printer. The black cartridge has a total of 208 nozzles and installs on the right. The color cartridge has a total of 192 nozzles and installs on the left. The printer is capable of printing in both directions from either cartridge.
General Information 1-1
4400-001
Specifications
Printer Engine
Technology Thermal Inkjet 2-pin and printhead swapping type Speed Color Mono Resolution Color Mono Printing Width Feeding Method Automatic Manual Tray Emulation Printer Driver Interface 6 ppm at Draft Mode 12 ppm at Draft Mode 600 X 600 dpi (1200 X 2400 dpi Addressable) 600 X 600 dpi (1200 X 2400 dpi Addressable) 203 mm 100 sheets of 20 lb cut sheets (Max 10 mm) No Host Based Printing (GDI) Windows 98/2000 Driver USB Interface
Printhead
Babbage Mono Standard Printhead Ink Type Ink Color Ink Yield 208 nozzles Pigment Black About 600 sheets Birch Color 192 nozzles Dye Color About 200 sheets
1-2 Service Manual
4400-001
Facsimile
General Compatibility Scan Method Scan Width Scan Resolution Scan Speed Feeding Method ADF Guide Stacker Paper Tray Modem Speed Coding Method LCD Scanning Resolution and Type Contrast Memory Capacity Back-up Time Confidential Forced Memory TX Memory RX ITU-G3 CIS Maximum 216 mm, Effective 210 mm 300 X 300 dpi 7 seconds Sheet-Feed 20 sheets of 20 pound Document Input Guide Document Output Stacker/Paper Stacker Bin Type (without Manual Tray) 14.4 Kbps MH, MR, MMR, Error Correction Mode 2 lines of 16 characters each Standard: 203 X 98 dpi Fine: 203 X 196 dpi (default) Superfine: 300 X 300 dpi Darkest/Darken/Normal Lighten/Lightest 1 Mbyte 15 sec (Continuous power failure, typically 1-2 minutes) No Yes Automatic reception when paper empty.
General Information 1-3
4400-001
Telephone Speed Dial Chain Dial On-Hook Dial Last Number Redial Auto Redial Hold and Mute Pause Ringer Volume Tone/Pulse Select DRPD Report and List TX/RX Journal Image TCR System Data Telephone Number List Self Test Copy Multipage Copy Grayscale Reduction and Enlargement Telephone I/F Others Answering I/F Extension Phone Sensors Real Time Clock RTI 70 locations No Yes, 1-Key Yes, 1-Key Yes No Yes, use Redial Key S/W Option Setting (4 steps) Only Tone Mode USA: Yes, Other Countries: No Yes Yes, Reduction of first page sent by Memory TX Yes Yes Yes Up to 99 pages 256 levels 25% - 200% (Reference is the top center of document.) Yes 1-jack, extension phone transfer Paper Jam No Yes
1-4 Service Manual
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Scanner
Compatibility Technology Light Source for Color CIS TWAIN Platen CIS RGB LEDs (Line Order Control)
Power and Size
Power Source Dimensions Weight (Packed Weight) 110V-240V / 50Hz-60Hz 440.6 X 319.6 X 205.4 mm 5.6 Kg (8.0 Kg packed weight)
Abbreviations
ASF B/M CIS EOF ESD FPC FRU HVPS LCD LVPS OEM V ac V dc ZIF Auto Sheet Feed Bill of Material Contact Image Sensor End of Form Electrostatic Discharge Flat Printhead Cable Field Replaceable Unit High Voltage Power Supply Liquid Crystal Display Low Voltage Power Supply Original Equipment Manufacturer Volts alternating current Volts direct current Zero Insertion Force
General Information 1-5
4400-001
1-6 Service Manual
4400-001
2. Diagnostic Information
Start
Power-On Self Test (POST) Sequence
1. CIS light turns on then turns off. 2. Carrier moves to the left and the paper feed motor runs then stops. 3. Carrier returns to the right. 4. "Powering Up Please Wait" is displayed on the LCD. 5. Ready, ANS/FAX, the Date and Time display when POST is complete. If your printer completes POST with no errors, go to the "Symptom Tables" on page 2-3. Locate the symptom and take the indicated action. If your printer does not complete POST, locate the symptom in the following table and take the indicated action.
Diagnostic Information 2-1
4400-001
POST Symptom Table
Symptom LCD or operator panel buttons do not work and no motors run Paper feed gears do not turn Carrier does not move Carrier slams side frame CIS light does not turn on Action Go to the "Power Service Check" on page 2-15. If okay, go to the "Operator Panel Problems" on page 2-3.
Go to the "Paper Feed Service Check" on page 2-12.
Go to the "Carrier Transport Service Check" on page 2-7. Go to the "Carrier Transport Service Check" on page 2-7. Go to the "CIS Assembly Service Check" on page 2-9.
2-2 Service Manual
4400-001
Symptom Tables
Locate the symptom in the following tables and take the appropriate action. Carrier Transport Problems
Symptom · · · · No carrier movement Slow carrier movement Carrier stops Carrier slams side frame Action Go to the "Carrier Transport Service Check" on page 2-7.
Maintenance Station Problems
Symptom Maintenance station: · Fails to cap the printheads · Fails to clean the printheads Action Go to the "Maintenance Station Service Check" on page 2-11.
Operator Panel Problems
Symptom · Buttons do not work · LCD does not display Action Check operator panel cable connection at CN17 on the system board. Then run the "Power-On Self Test (POST) Sequence" on page 2-1. If the LCD or buttons fail, check connection CN17. If the problem remains, replace the operator panel assembly. Go to the "Operator Panel Assembly Removal" on page 4-15. If the problem still exists, replace the system board. Go to the "System Board Removal" on page 4-21.
Diagnostic Information 2-3
4400-001
Symptom Document scan sensor does not detect document Action Check operator panel cable connector CN17 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. Go to the "Operator Panel Assembly Removal" on page 4-15.
2-4 Service Manual
4400-001 Printer Communication Table
Symptom Not able to print Self Test Page Action Check the USB cable and system board cable connections. If okay, replace system board. Go to the "System Board Removal" on page 4-21.
Scanner Problems
Symptom Light does not turn on · Scanned images are faded, or colors are dull, blurry or fuzzy. Images are slanted or crooked and the straight lines in the image appear to be jagged or uneven. · Blank copies · Scanner motor does not run · Document sensor does not work Action Go to the "CIS Assembly Service Check" on page 2-9. Go to the "Scan/Copy Quality Service Check" on page 2-18.
Go to the "Scanner Motor with Gear Assembly Service Check" on page 2-10. Go to the "Operator Panel Problems" on page 2-3.
· CIS white roller assembly slips · Paper will not feed correctly
Go to the "Paper Path Service Check" on page 2-14.
Diagnostic Information 2-5
4400-001 Paper Feed Problems
Symptom · Fails to pick paper · Picks more than one sheet of paper · Picks paper but fails to feed · Paper jams · Paper fails to exit · Noisy paper feed Envelopes fail to feed Paper skews Action Go to the "Paper Feed Service Check" on page 2-12.
Go to the "Paper Feed Service Check" on page 2-12. Go to the "Paper Path Service Check" on page 2-14.
Power Problems
Symptom No power in machine, motors do not operate Action Go to the "Power Service Check" on page 2-15.
Print Quality Problems
Symptom · · · · · · · · Voids in characters Light print Prints off the page Fuzzy print Carrier moves but no print Printhead dries prematurely Colors print incorrectly Vertical alignment off Action Go to the "Print Quality Service Check" on page 2-16.
· Ink smearing · Vertical streaks on paper · Print lines crowded
Go to the "Paper Feed Service Check" on page 2-12.
2-6 Service Manual
4400-001
Service Checks
Carrier Transport Service Check
FRU 1 System Board Carrier Transport Motor Action Check the carrier transport motor connector CN5. If connected, check for approximately 28 volts on pins 1 and 2 or at the wire connections located on the rear of the carrier transport motor. If voltage is incorrect, replace the system board. If voltage is correct, check the motor for shorts. Check the motor for binds, or loose motor pulley. A noisy or chattering motor or a motor that fails to turn can be caused by:
2
Carrier Transport Motor
· An open or short in the motor · An open or short in the motor driver
on the system board
· A bind in the carrier transport
mechanism
With the carrier transport motor cable (CN5) disconnected from the system board, check for 0 to 16 ohms between the following pins on the motor: CN5-1 and CN5-2 If the readings are incorrect, replace the print engine. Go to the "Carrier Transport Motor Removal" on page 4-25. 3 Carrier Guide Rod Clean the carrier rod. Note: Lubricate the rod and the carrier rod bearing surfaces with grease P/N 99A0394.
Diagnostic Information 2-7
4400-001
FRU 4 Encoder Strip Carrier Assembly with Belt Action Check the encoder strip for proper installation. Also, check it for wear, dirt and grease. Replace if needed. 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. Go to the "Carrier Assembly with Belt Removal" on page 4-20. If problem remains, replace the system board. Go to the "System Board Removal" on page 4-21 5 Carrier Transport Belt Idler Pulley Assembly Check for worn, loose or broken parts. Check for obstructions blocking carrier movement. If pulley assembly is damaged, replace. Lubricate carrier to carrier frame engagement with grease P/N 99A0394. 6 Maintenance Station A problem with the maintenance station can cause carrier movement problems at the right margin. Go to the "Maintenance Station Removal" on page 4-19. If the carrier does not move toward the cartridge load position when the access door is opened, verify that power is on. If the carrier still does not move, check connector CN12 pin 1 for approximately 4 volts, with the door open. If the voltage is correct, replace the sensor. Disconnect CN12 from the system board before removing sensor. If the voltage is incorrect, replace the system board. Go to the "System Board Removal" on page 4-21.
7
Access Door Sensor
2-8 Service Manual
4400-001
CIS Assembly Service Check
The CIS lamp does not light when scanning is in process or during the (POST) sequence.
FRU 1 CIS Assembly
Action If light does not come on during the scanning process, check connector CN13 on the system board. If the connection is okay, check for a voltage reading of approximately 4 volts from ground to CN13-2 pin. If voltage is correct, replace the CIS assembly. Go to the "CIS (Contact Image Sensor) Removal" on page 4-7. If voltage is incorrect, replace the system board. Go to the "System Board Removal" on page 4-21.
Diagnostic Information 2-9
4400-001
Scanner Motor with Gear Assembly Service Check
Motor will not run.
FRU 1 Scanner Motor with Gear Assembly Action Check scanner motor for shorts. Disconnect connector CN8 from the system board and check for approximately 12.5 ohms between the following pins on the motor connector. CN8-1 and CN8-2 If the ohms reading is incorrect, replace the scanner motor assembly. If the motor does not come on during the scanning process, check connector CN8 on the system board. If the connection is okay, check for voltage reading of approximately 28 volts at pins CN8-1 CN8-2 CN8-3 CN8-4 If voltage is correct, replace the scanner motor with gear assembly. Go to the "Scanner Motor with Gear Assembly Removal" on page 4-9. If voltage is incorrect, replace the system board. Go to the "System Board Removal" on page 4-21. 2 Document Scanner Sensor To check the document scanner sensor, insert a sheet of paper or depress the sensor to see if the scanner motor is working. Go to "Operator Panel Problems" on page 2-3.
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4400-001
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.
FRU 1 Maintenance Station Assembly
Action As the carrier moves to the right over the maintenance station, a slot on the bottom of the carrier engages a tab on the sled of the maintenance station causing the cap to rise and seal the printhead. Carrier movement to the left uncaps the printhead. The wiper cleans the printhead nozzles as the carrier leaves the maintenance station. The wiper cleans the printhead only when the carrier is moving to the left. There should be no wiping action of the printhead nozzles when the carrier is moving to the right. After the cleaning operation is complete, a tab on the maintenance station engages a tab on the carrier, causing the wiper to lower. Check the maintenance station for worn or broken parts. Replace if needed. Go to the "Maintenance Station Removal" on page 4-19. Worn wipers cause degraded print quality just after a maintenance cleaning. Check for loose or worn wipers. Worn caps cause the printhead nozzles to dry and clog. Check for loose or worn caps.
Diagnostic Information 2-11
4400-001
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 problem, examine it for the following before you begin the service check:
· · · ·
Check the entire paper path for obstructions. Be sure there is not too much paper in the sheet feeder. Be sure the correct type of paper is being used. Check for static in the paper.
FRU 1 System Board
Action Run the "Power-On Self Test (POST) Sequence" on page 2-1. Replace parts as needed. To check the paper feed motor, disconnect the paper feed connector CN11 and check for approximately 3 ohms between pins 1 and 4. If the reading is incorrect, replace the paper feed motor assembly with gears. Go to the "Paper Feed Motor Assembly with Gears Removal" on page 4-24. If the reading is correct, replace the system board. Go to the "System Board Removal" on page 4-21.
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4400-001
FRU 2 Paper Feed Motor Action 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 · A bind in the paper feed mechanism With the paper feed motor cable CN11 disconnected from the system board, check for approximately 3 ohms between the following pins on the motor: Pin 1 to Pin 4 If the readings are incorrect, replace the paper feed motor assembly with gears. Go to the "Paper Feed Motor Assembly with Gears Removal" on page 4-24. Although the paper feeds in a forward direction only, the paper feed motor turns in two directions. If the paper feed motor turns in one direction only, replace the system board. Go to the "System Board Removal" on page 4-21. Binds in the paper feed motor or gear train can cause intermittent false paper jam errors. Remove the paper feed motor and check the shaft for binds. Also check for a loose or worn motor gear. 3 4 Auto Sheet Feeder Assembly Mid Frame Assembly Check the pick roller for wear. Check the following for wear: · Small Feed rollers · Large Feed roller · Exit roller · Star rollers If the mid frame assembly needs to be replaced, go to the "Mid Frame Assembly with Exit Rollers Removal" on page 4-22. 5 End-of-Forms Flag and Spring Check for binds or damage.
Diagnostic Information 2-13
4400-001
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.
FRU 1 2 3 4 Large and Small Feed Rollers Small Feed Roller Springs Auto Sheet Feeder Assembly Mid Frame Asm Action Check for wear and binds. Check for damage or disconnected springs. Check the pick roller for wear. Check the following for wear: · Exit roller · Star rollers 5 6 End-of-Forms Flag White Roller Assembly Check for binds or damage. Check for correct installation. Check gear and bushings for damage. If damaged, replace. Go to the "CIS White Roller Assembly Removal" on page 4-4.
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4400-001
Power Service Check
FRU 1 Power Supply Action Plug the machine into an outlet. Check for approximately 30 V dc at J5 pin 1. If voltage is incorrect, replace the power supply. Unplug the printer. Disconnect the printhead cables and plug in the printer. Look for a symptom change. Check the failing part for shorts and replace as necessary. Repeat this procedure for the carrier transport motor, paper feed motor, and operator panel. 3 System Board If the symptom has not changed, replace the system board. Go to the "System Board Removal" on page 4-21.
2
Printhead Cables Paper Feed Motor Carrier Transport Motor Operator Panel
Diagnostic Information 2-15
4400-001
Print Quality Service Check
FRU / Function 1 2 Printhead Cartridge Color Printhead Cartridge Cross Contamination Action Be sure the machine contains good print cartridges. Cross contamination of color inks results in incorrect colors printed, as when green prints for yellow, (when yellow and blue are mixed in the printhead cartridge). This problem resolves quickly as the printhead cartridge is used. If cross contamination occurs, check the following: · The maintenance station wiper for damage. · The printhead nozzle plate was resealed with tape. 3 Carrier Assembly Reseat the printhead cables in the system board and check the following parts for wear or damage: · Printhead Cartridge Latch · Latch Spring · Carrier 4 System Board Carrier Assembly Print the self test page. To enter the self test page, press the Setup button and then Menu button until "Print Report" is displayed. Press Options button until "Self Test" is displayed. Then press the Start button to print the self test page. Look for a break in the diagonal line of the nozzle test pattern. A broken line indicates one or more print nozzles are not working. Run the test again to verify the failure. Check the gold-plated contacts on the end of the printhead carrier cable for dirt, wear and damage. Use only a clean dry cloth to clean the contacts. If a problem is found with contacts on the carrier, replace the carrier. Go to the "Carrier Assembly with Belt Removal" on page 4-20. If the symptom remains, replace the system board. Go to the "System Board Removal" on page 4-21. 5 Maintenance Station Intermittent nozzle failures can be caused by worn parts in the maintenance station. Go to the "Maintenance Station Removal" on page 4-19, and then return to this check.
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4400-001
FRU / Function 6 Paper Feed Action 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. · Feed rollers for wear, dirt, or looseness. · Gears for wear or binds. · Paper path for obstructions. 7 Carrier Transport Blurred print and voids can be caused by problems in the carrier transport area. Check the following: · Carrier transport belt for wear. · Carrier guide rod for wear or dirt. If dirty, clean and lubricate. · Carrier to carrier frame engagement should be lubricated with grease P/N 99A0394. · Idler pulley parts for wear, damage, or looseness. 8 Alignment Uneven vertical lines can be adjusted by performing the printhead alignment adjustments in the maintenance mode. The user is directed, through the "Setting up System in User Mode" on page 3-3, to perform the printhead alignment adjustments, when replacing a printhead cartridge.
Diagnostic Information 2-17
4400-001
Scan/Copy Quality Service Check
FRU / Function 1 Scanned images are: faded, or colors are dull, blurry or fuzzy. Images are slanted or crooked and the straight lines in the image appear to be jagged or uneven. Blank copies Action Check the lighter/darker settings to see if it is correct. · From the operator panel · From the Scan & Copy Control Program Check to see if there is any dust or debris on the glass lens of the CIS. This may cause a poor image. If blank copies found, make sure that the original document is facing down. Check the print cartridges to see if they need to be cleaned or replaced. 3 Scanning error Ensure the USB cable is correctly installed. Ensure the USB cable is proper for USB specification, version 1.1. Start the system after twain driver is reinstalled. If error still occurs, replace the system board. Go to the "System Board Removal" on page 4-21.
2
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4400-001
Fax/Telephone Communication Service Check
FRU / Function 1 Line Interface Board or System Board. Cannot make telephone connection to other fax. Action No dial tone Verify correct dialing method (tone or pulse). Are TEL and LINE connections reversed? Verify phone number and availability of other fax machine. Before dialing, press the Speaker button so you can hear the dialing process. You should hear the ring and a 0.5 second 1000 Hz calling tone from your machine, a 1 second pause, then the 3 second 2100 Hz fax response tone and a 1650 Hz - 1850 Hz "warbling" handshaking tone from the called machine. Check the connectors on the line interface board P1 and P2. If okay, check connector CN15 located on the system board. If problem still exists, replace the line interface board. Go to the "Line Interface Board Removal" on page 4-13. If this does not correct the problem, replace the system board. Go to the "System Board Removal" on page 4-21. 2 Cannot receive faxes Are TEL and LINE connections reversed? Is a telephone on the same line off the hook? Is the machine connected to the wrong telephone line? Check for a damaged line cord to the machine. Check telephone and line cord connections.
Diagnostic Information 2-19
4400-001
2-20 Service Manual
4400-001
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.
Drive Feed Roller Assembly
The drive feed roller assembly, consisting of various rollers, rubber pad, and springs, automatically separates and feeds the pages of a document over the scanning area and stacks them on the document exit tray. Documents up to 15 pages can be placed in the drive feed roller assembly for scanning. The leading edge of the document moves the document detect sensor lever when the operator slides the stack into the drive feed roller assembly. The scan motor starts to rotate when the document detect sensor has detected the leading edge of the document. The roller feeds the first page of the document into the feeder. The scan motor is stopped when the leading edge of the page actuates the document scan sensor. The page is now in the scan position. The drive feed roller assembly rubber pad prevents multiple sheets from being fed. A spring provides force that the pad places on the document pages for proper separation. The scan motor is turned on when the machine is ready to scan the document and drives the feed roller at a speed determined by the resolution selected. The scan motor is stopped after a set period of time when the trailing edge of the page releases the document scan sensor. If another page is detected as the trailing edge of the page releases the document scan sensor, the next page feeds to the scan position. The exit roller pushes the page out onto the document exit tray where it is stacked. Diagnostic Aids 3-1
4400-001
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.
Document Sensors
There are two document sensors in the scanner mechanism; the document detect and the document scan sensor. The document detect sensor, detects whether or not a document is loaded, and the document scan sensor detects the scan position of the document. 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. Service Mode In service mode (tech) mode, the technician checks the machine and performs various tests to isolate the cause of a malfunction. To enter the service mode, press Menu, #, 1, 9, 3, 4 in sequence, and the LCD briefly displays T. The machine has entered service (tech) mode. While in service mode, the machine still performs all normal operations. To return to normal user mode, press Menu, #, 1, 9, 3, 4 in sequence again, or turn the power off and then on by unplugging and plugging the power cord. Options changed while in service mode do not remain changed unless you clear the machine's memory.
3-2 Service Manual
4400-001 Setting up System in User Mode
Setup Date Jan/01/01 Time 12:00:00P Print Report Item Month - Day - Year Hour - Minute - AM/PM Fax Confirm Transmit Log Receive Log Speed Dial List Self Test Cartridge Clean Cartridge Align Scanner Init Letter/A4/Legal Off/Low/Medium/High Letter Quality/ Draft Quality Off/Forward/Print/ Forward Fax/Tel/Ans/Fax/DRPD Learn Yes / No Pulse / Tone Fax Type Copy Size Copy Collate Copy Contrast Copy Type Copy Paper Type Letter Medium Letter Quality Off Fax Default Status Jan/01/01 12:00 PM
Maintenance
Paper Size Ringer Volume Fax Print Fax Forwarding Fax Receive Mode Setup DRPD Auto Journal Dial Mode Default Setting
Diagnostic Aids 3-3
4400-001 Setting up System in Service Mode
Setup CIS Test
Item Red, Green and Blue maximum and minimum peak levels Scanner Aging/ Printer Aging Fax Confirm Transmit Log Receive Log Speed Dial List Self Test Protocol Dump ASF Test System Data NVRAM Dump CIS Pattern Cartridge Clean
Default Status
Aging Test Print Report
Maintenance Program Download Message Confirm Remote RCV Code EMC Mode Auto Reduction Retry Interval Retry Count Answer on Rings Print RTI Modem Test
On/Off/Error (0-9) On/Off Off/On/On-with vertical/ (1-7) (0-2) (1-7) Yes / No FSK/2400/4800/7200/ 9600/1200/14400 bps/ 1100/1650/1850/2100 Hz
On-Error 9 On On 3 2 1
DTMF Test
3-4 Service Manual
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Setup ROM Test Modem Speed Item (1-6) Set TX Level Set RX Level Pause Time 14400/12000/9600/ 7200/4800/2400 (1-15) (40-50) (1-9) 14400 bps 12 43 3 Item Default Status
CIS Test The test adjusts the light of CIS. It is already set at CIS Test to get optimum quality. Warning: Shading profile must be made after downloading a new firmware. If not, system will not work properly. 1. 2. 3. 4. 5. 6. Load all white document in scanner unit. Press Setup and `CIS Test Press Start' is displayed. Press Start and `Shading...' is displayed. After scanning, shading waveform is printed. After shading waveform has printed, press Stop. Turn Off system and turn On.
Aging Test Scanner Aging - Scanner part aging Printer Aging - Printer part aging. Print Report 1. 2. 3. 4. Press Setup. Press Menu until `Print Report' is displayed. Press Options to select the log you want to print. Press Start or Setup to print the report.
Diagnostic Aids 3-5
4400-001 Maintenance 1. Press Setup. 2. Press Menu until `Maintenance' displays. 3. Press Options but ton 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. 3. Press Start. 4. Download your new firmware files from PC. Note: Be sure the USB cable is connected to the PC when you are running this test. If cable is not connected, it may cause a fatal error. Message Confirm A message confirmation report shows whether the transmission was successful or not and how many pages were sent. 1. Press Setup. 2. Press Menu five times until `Message Confirm, Report, On Report, Off Report, Error' is displayed. 3. Press Options to print a confirmation report automatically each time you send a fax (On). Press Options to turn this feature Off. Press Options to print only when an error occurs and the transmission was not successful. Press Start or Setup to set the time you want to select.
3-6 Service Manual
4400-001 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. The password is preset to 9. 1. Press Setup. 2. Press Menu until `Remote RCV Code' displays on the top line. 3. Enter the desired code 0 to 9 on the number keypad. ECM (Error Correction Mode) This mode compensates for poor line quality and ensures accurate, error-free transmission with another ECM-equipped facsimile machine. If the line quality is poor, transmission time may be increased when ECM is enabled. 1. Press Setup. 2. Press Menu until `ECM Mode' displays. 3. Press Start or Setup when Yes is displayed to turn on the Error Correction Mode. Press Start or Setup when No is displayed to turn off the Error Correction Mode. 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. If the fax machine cannot reduce the data to fit one page with the feature enabled, the data is divided and printed in actual size on two or more sheets. 1. Press Setup. 2. Press Menu until `Auto Reduction' displays. To turn only the vertical reduction feature On, press Start or Setup when On is displayed. The machine reduces an incoming page containing overflow data only in vertical. Press Start or Setup when Off is displayed to turn this feature on.
Diagnostic Aids 3-7
4400-001 Retry Interval 1. Press Setup. 2. Press Menu until `Retry Interval' displays. 3. Enter the number of minutes (from 1 to 7) using the numbers on the keypad. 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 will not redial. Answer On Rings You can select the number of times your machine rings before answering an incoming call. If you are using your machine as both a telephone and a fax machine, we suggest you set the ring count to at least 4 to give you time to answer. 1. Press Setup. 2. Press Menu until `Answer On Rings' displays. 3. Enter a number from 1 through 7 on the keypad. Print RTI (Receive Terminal ID) This feature lets the machine automatically print the receive terminal ID (if registered), page number, and the date and time of the reception at the bottom of each page on the received document. 1. Press Setup. 2. Press Menu until `Print RTI' displays. 3. Press 1 to print RTI, otherwise press 2.
3-8 Service Manual
4400-001 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: 14400, 12000, 9600, 7200, 4800, 2400 bps 1. Press Setup. 2. Press Menu until `Modem Test' displays. DTMF Test This feature the user or tester verify that the phone keypad buttons are working correctly. 1. Press Setup. 2. Press Menu until "DTMF Test" displays. 3. Press Start. To test each button, press each button one at a time. There is a different tone for each button. Each pressed button displays a corresponding number or symbol in the LCD panel. If any button fails, replace the operator panel. Modem Speed Default=14400 bps Select baud rate of 14400, 12000, 9600, 7200, 4800 or 2400 bps. The lower the baud rate, the larger the acceptable error rate. T30 protocol has a fixed speed of 300 bps in the protocol mode. When the TX speed is set to 14400 or 12000 bps, the RX speed will be either V.17 or V.33. When the TX speed is set to 9600 or 7200 bps, the RX speed will be either V.29 or V.27. When the TX speed is set to 4800 or 2400 bps, the RX speed will be V.27. 1. Press Setup. 2. Press Menu until `Modem Speed' displays. 3. Press Options to select the TX speed you want. Then press Start or Setup.
Diagnostic Aids 3-9
4400-001 Set TX Level Default=12 dBm FCC requires that the transmission level be less than -9 dBm. From 9 dBm to -15 dBm is acceptable. You can set the transmission level between 0 and -15 dBm in 1 dBm steps using the operator panel keypad. Accuracy is +0/-3 dBm. 1. Press Setup. 2. Press Menu until `Set TX Level' displays. 3. Enter a number from 1 through 15 on the keypad. Set RX Level Default=-43 dBm Reception level may be too low due cable losses. If set to -43 dBm, reception sensitivity will be between 0 and -43 dBm. 1. Press Setup. 2. Press Menu until `Set RX Level' displays. 3. Enter a number from 40 through 50 on the keypad. Pause Time Default=3 seconds This sets the length of the pause time from 1 through 9 seconds. 1. Press Setup. 2. Press Menu until `Pause Time' displays. 3. Enter a number from 1 through 9 on the keypad.
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4400-001
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). To prevent damage to ESD-sensitive parts, follow the instructions below in addition to all the usual precautions, such as turning off power before removing logic boards:
· Keep the ESD-sensitive part in its original shipping container (a · · · · ·
special "ESD bag") until you are ready to install the part into the machine. Make the least-possible movements with your body to prevent an increase of static electricity from clothing fibers, carpets, and furniture. Put the ESD wrist strap on your wrist. Connect the wrist band to the system ground point. This discharges any static electricity in your body to the machine. Hold the ESD-sensitive part by its edge; do not touch its pins. If you are removing a pluggable module, use the correct tool. Do not place the ESD-sensitive part on the machine cover or on a metal table; if you need to put down the ESD-sensitive part for any reason, first put it into its special bag. Machine covers and metal tables are electrical grounds. They increase the risk of damage because they make a discharge path from your body through the ESD-sensitive part. (Large metal objects can be discharge paths without being grounded.) Prevent ESD-sensitive parts from being accidentally touched by other personnel. Install machine covers when you are not working on the machine, and do not put unprotected ESDsensitive parts on a table. If possible, keep all ESD-sensitive parts in a grounded metal cabinet (case). Be extra careful in working with ESD-sensitive parts when cold weather heating is used because low humidity increases static electricity. Repair Information 4-1
·
· ·
4400-001
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. The latches break easily; release them carefully. To remove such parts, press the hook end of the latch away from the part to which it is latched.
4-2 Service Manual
4400-001
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. Before removing any component from the machine, note the cable routing. When servicing the machine: 1. 2. 3. 4. 5. 6. 7. Check to verify that documents are not stored in memory. Move the printer cartridge to far right to cap the nozzle. Unplug the power cord. Use a flat and clean surface. Replace only with authorized components. Do not force plastic-material components. Make sure all components are in their proper position.
Repair Information 4-3
4400-001
CIS White Roller Assembly Removal
1. Open the operator panel. 2. Push the bushing on both ends of the roller slightly inward, then rotate it until it reaches the slot as shown. Then lift the roller out. Note: Check the roller for any dirt. If dirty, wipe it off with soft cloth dampened with water. If the roller is heavily worn, replace it with a new one.
4-4 Service Manual
4400-001
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.
Repair Information 4-5
4400-001
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.
4-6 Service Manual
4400-001
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. Remove the CIS assembly.
Repair Information 4-7
4400-001 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.
4-8 Service Manual
4400-001
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.
Repair Information 4-9
4400-001 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
4400-001
Power Supply Removal
1. Remove the top cover assembly. See "Top Cover Assembly Removal" on page 4-5. 2. Unplug the power supply connector from the system board. Make sure the harness is released from the hook as shown.
Repair Information 4-11
4400-001 3. Remove one screw securing the ground wires to the bracket.
4. Push down on the hooks on both ends and remove the power supply.
4-12 Service Manual
4400-001
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 system board.
Repair Information 4-13
4400-001 4. Pull the snap as shown to unlock the line interface board from the system board. Push up on the line interface board.
5. Unplug all the connectors from the line interface board and remove it.
4-14 Service Manual
4400-001
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. Turn the tie stopper 90 degrees as shown and remove from operator panel assembly. 6. Release ground strap cable hooks. 7. Release opposite operator panel hinge.
Repair Information 4-15
4400-001
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. Remove the paper deflector.
7. Remove three screws securing the printer unit, and unplug the eight connectors from the system board. Remove the printer unit.
4-16 Service Manual
4400-001 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. Release lower paper guide tabs. 4. Release upper paper guide tab. 5. Remove paper guide. 6. Remove paper deflector. 7. Release cables from guides located on ASF assembly. 8. Remove two screws. 9. Push down on power supply hooks and slide the power supply away from printer. 10.Remove screw.
Repair Information 4-17
4400-001 11.Remove ASF assembly.
4-18 Service Manual
4400-001
Maintenance Station Removal
1. Remove the printer unit. 2. Remove one screw. 3. Rease two tabs from the rear of the maintenance station and remove the maintenance station..
Repair Information 4-19
4400-001
Carrier Assembly with Belt Removal
1. Remove the printer unit. See "Printer Unit Removal" on page 4-16. 2. Disconnect the carrier cables from the system board. 3. Release tab on carrier cable guide. 4. Release carrier cable guide from frame. 5. Remove pulley stopper. 6. Depress the belt tensioner and remove the belt from the carrier motor. 7. Remove two carrier springs that secure the shaft. 8. Remove the carrier shaft. 9. Remove the carrier assembly.
4-20 Service Manual
4400-001
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.
Repair Information 4-21
4400-001
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. Remove exit roller assembly. 7. Release four springs on small feed roller assembly. 8. Press down and remove each section of lower portion of small feed roller assembly. 9. Release tabs in upper portion of small feed roller assembly. 10.Remove upper portion of small feed roller assembly. 11.Push up on mid frame assembly to release from large feed roller. 12.Remove mid frame assembly.
4-22 Service Manual
4400-001
Large Feed Roller Assembly with Gear Removal
1. Remove the printer unit. See "Printer Unit Removal" on page 4-16. 2. Remove the mid frame assembly. See "Mid Frame Assembly with Exit Rollers Removal" on page 4-22. 3. Remove the maintenance station. 4. Remove the feed roller bearing from the main frame. Pull the feed roller as shown and remove.
Repair Information 4-23
4400-001
Paper Feed Motor Assembly with Gears Removal
1. Remove the printer unit. See "Printer Unit Removal" on page 4-16. 2. Remove the large feed roller assembly. See "Large Feed Roller Assembly with Gear Removal" on page 4-23. 3. Remove the two screws and remove the paper feed motor assembly.
4-24 Service Manual
4400-001
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. Press the idler pulley and remove the belt from the carrier transport pulley. 5. Disconnect connector (CN5) from the system board. 6. Remove the two screws from the carrier transport motor and remove.
Repair Information 4-25
4400-001
4-26 Service Manual
4400-001
5. Connector Locations
System Board
Units CN5 CN8 CN10 CN11 CN12 CN13 CN15 CN16 CN17 Description Carrier Motor Scanner Motor Power Supply Paper Feed Motor Door Switch CIS Line Interface Board Speaker Operator Panel
Connector Locations 5-1
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Logic Card
Units P1 P2 Description System Board Phone Lines
5-2 Service Manual
4400-001
Power Supply
Units J5 Description System Board
Connector Locations 5-3
4400-001
5-4 Service Manual
4400-001
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:
· · · ·
All gear mounting studs. The left and right ends of the large feed roller at the side frames. The carrier to carrier frame engagement. The carrier guide rod, and carrier guide rod bearings.
Preventive Maintenance 6-1
4400-001
6-2 Service Manual
4400-001
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. NS: (Not Shown) in the Asm-Index column indicates that the part is procurable but is not pictured in the illustration. PP: in the parts description column indicates the part is available in the listed parts packet. NA: Not available as a FRU
· · ·
Parts Catalog 7-1
4400-001
Assembly 1: Main Assembly
7-2 Service Manual
4400-001
Assembly 1: Main Assembly
AsmIndex 1 2 3 4 5 6 7 8 9 N/S Part Number 12G6933 12G6932 12G6931 12G6935 12G6934 12G6936 12G6937 12G6938 12G6939 12G6973 Units 1 1 1 1 1 1 1 1 1 1 Description Support, Paper Extension Guide, Paper Deflector, Paper Cover, Top Assembly CIS White Roller Assembly Tray, Paper Exit Assembly Tray, Scan Exit Assembly Screw Parts Packet Panel, Operator Assembly Carrier Sheet
Parts Catalog 7-3
4400-001
Assembly 2: Base Unit
7-4 Service Manual
4400-001
Assembly 2: Base Unit
AsmIndex 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Part Number 12G6972 12G6954 12G6971 12G6951 12G6952 12G6940 12G6946 12G6947 12G6948 12G6941 12G6949 12G6950 12G6979 12G6953 12G6942 12G6944 12G6945 12G6943 Units 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Description Phone Line Cord Cable, Line Interface Board Power Line Cord Board, Line Interface Power Supply Base Assembly Motor, Scanner with Gear Assembly Motor, Carrier Assembly Shaft, Exit Drive Feed Roller Assembly Strap, Operator Panel Door Spring, Ground Sensor, Access Door Latch, Operator Panel Door Contact, Image Sensor (CIS) Spring, CIS IPR-Bracket CIS Cable. CIS
Parts Catalog 7-5
4400-001
Assembly 3: Engine
7-6 Service Manual
4400-001
Assembly 3: Engine
AsmIndex 3-1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Part Number 12G6955 12G6961 12G6970 12G6969 12G6959 12G6965 12G6956 12G6966 12G6962 12G6964 12G6980 12G6968 12G6960 12G6969 12G6967 12G6958 12G6957 12G6963 Units 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Description ASF Assembly Small Feed Roller Assembly with EOF and Springs System Board Main Frame Assembly with Encoder Clip Motor, Carrier Transport Spring, Carrier Shaft Retainer Maintenance Station Assembly Bearing, Feed Roller Feed Roller, Large with Gear Frame, Mid Assembly with Exit Rollers Carrier Belt Strip, Encoder Carrier Assembly with Belt Main Frame Assembly with encoder clip Shaft, Carrier Stopper Pulley Pulley, Idle Assembly Motor, Paper Feed Assembly with Gears
Parts Catalog 7-7
4400-001
7-8 Service Manual
4400-001
Index
A
Abbreviations 1-5 Adjustments 4-2 Aging Test 3-5 Answer On Rings 3-8 Auto Reduction 3-7 Problems Carrier Transport 2-3 Maintenance Station 2-3 Operator Panel 2-3 Paper Feed 2-6 Power 2-6 Print Quality 2-6 Printer Communication 2-5 Scanner 2-5 Program Download 3-6
C
CIS Test 3-5 Connector Locations 5-1
D
Diagnostic Aids 3-1 Diagnostic Information 2-1 DTMF Test 3-9
R
Remote RCV Code 3-7 Removal Procedures 4-2 Removals ASF Assembly 4-17 Carrier Assembly 4-20 Carrier Transport Motor 4-25 CIS White Roller 4-4 Contact Image Sensor 4-7 Large Feed Roller 4-23 Line Interface Board 4-13 Maintenance Station 4-19 Mid Frame Assembly 4-22 Operator Panel 4-15 Paper Feed Motor 4-24 Power Supply 4-11 Printer Unit 4-16 Rollers 4-6 Scanner Motor 4-9 System Board 4-21 Top Cover Assembly 4-5 Repair Information 4-1 Retry Count 3-8 Retry Interval 3-8
E
ECM 3-7 ESD-Sensitive Parts 4-1
G
General Information 1-1
L
Logic Card 5-2 Lubrication Specifications 6-1
M
Maintenance 3-6 Message Confirm 3-6 Modem Speed 3-9 Modem Test 3-9
P
Parts Catalog 7-1 Pause Time 3-10 Plastic Latches 4-2 POST 2-1 Preventive Maintenance 6-1 Print Report 3-5 Print RTI 3-8
S
Safety Information v Service Checks Carrier Transport 2-7 CIS Assembly 2-9 Fax/Telephone Communication 2-19
Index I-1
4400-001
Maintenance Station 2-11 Paper Feed 2-12 Paper Path 2-14 Power 2-15 Print Quality 2-16 Scan/Copy Quality 2-18 Scanner Motor 2-10 Service Mode 3-2, 3-4 Set RX Level 3-10 Set TX Level 3-10 Specifications Facsimile 1-3 Power and Size 1-5 Printer Engine 1-2 Printhead 1-2 Scanner 1-5 Symptom Table (POST) 2-2 Symptom Tables 2-3 System Board 5-1 12G6946 12G6947 12G6948 12G6949 12G6950 12G6951 12G6952 12G6953 12G6954 12G6955 12G6956 12G6957 12G6958 12G6959 12G6960 12G6961 12G6962 12G6963 12G6964 12G6965 12G6966 12G6967 12G6968 12G6969 12G6970 12G6971 12G6972 12G6979 12G6980 7-5 7-5 7-5 7-5 7-5 7-5 7-5 7-5 7-5 7-7 7-7 7-7 7-7 7-7 7-7 7-7 7-7 7-7 7-7 7-7 7-7 7-7 7-7 7-7 7-7 7-5 7-5 7-5 7-7
T
Theory of Mechanism Contact Image Sensor 3-2 Document Sensors 3-2 Drive Feed Roller Assembly 3-1 Scanner 3-1
U
User Mode 3-3
Part Numbers
12G6931 12G6932 12G6933 12G6934 12G6935 12G6936 12G6937 12G6938 12G6939 12G6940 12G6941 12G6942 12G6943 12G6944 12G6945 7-3 7-3 7-3 7-3 7-3 7-3 7-3 7-3 7-3 7-5 7-5 7-5 7-5 7-5 7-5
I-2 Service Manual