Lexmark X125 Manuale utente

4412-00X

Lexmark and Lexmark with diamond

design are trademarks of Lexmark

International, Inc., registered in the

United States and/or other countries.

• Table of Contents

•Index

• Safety and Notices

• Trademarks

• Start Diagnostics

Lexmark X125

All-In-One

Edition: November 2002

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

ServiceInfoAndTraining@Lexmark.com. 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.

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.

4412-00X

P/N 12G9185

iii

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Table of Contents

Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .v

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .x

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Printer Engine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Printhead. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Facsimile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Scanner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Power and Size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Scanner Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Drive Feed Roller Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Contact Image Sensor (CIS). . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Document Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Repair Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Handling ESD-Sensitive Parts . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Removal Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

iv Service Manual

4412-001

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 . . . . . . . . . . . . . . . . . . . . . . . .4-12

Operator Panel Assembly Removal. . . . . . . . . . . . . . . . . . . .4-13

Printer Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-14

ASF Assembly Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-15

Maintenance Station Removal . . . . . . . . . . . . . . . . . . . . . . . .4-17

Carrier Assembly with Belt Removal . . . . . . . . . . . . . . . . . . .4-18

System Board Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-19

Mid Frame Assembly with Exit Rollers Removal . . . . . . . . . .4-20

Large Feed Roller Assembly with Gear Removal . . . . . . . . .4-21

Paper Feed Motor Assembly with Gears Removal . . . . . . . .4-22

Carrier Transport Motor Removal. . . . . . . . . . . . . . . . . . . . . .4-23

Connector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

System Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

Line Interface Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .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

Safety Information v

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.

• 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

• La sécurité de ce produit repose sur des tests et des

agréations portant sur sa conception d'origine et sur des

composants particuliers. Le fabricant n'assume aucune

responsabilité concernant la sécurité en cas d'utilisation de

pièces de rechange non agréées.

• 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.

vi Service Manual

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.

• 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

• Die Sicherheit dieses Produkts basiert auf Tests und

Zulassungen des ursprünglichen Modells und bestimmter

Bauteile. Bei Verwendung nicht genehmigter Ersatzteile wird

vom Hersteller keine Verantwortung oder Haftung für die

Sicherheit 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.

Safety Information vii

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.

• 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

• A segurança deste produto baseia-se em testes e aprovações

do modelo original e de componentes específicos. O fabricante

não é responsável pela segunrança, no caso de uso de peças

de substituição não autorizadas.

• 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.

viii Service Manual

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.

• 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.

Safety Information ix

4412-00X

x Service Manual

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.

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.

General Information 1-1

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. 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.

1-2 Service Manual

4412-00X

Specifications

Printer Engine

Printhead

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

Feeding Method Automatic 100 sheets of 20 lb cut sheets

(Max 10 mm)

Manual Tray No

Emulation Host Based Printing (GDI)

Printer Driver Windows 98/ME, Windows

2000/Windows XP

Interface USB Interface

Babbage Mono Standard Birch Color

Printhead 208 nozzles 192 nozzles

Ink Type Pigment Dye

Ink Color Black Color

Ink Yield About 600 sheets About 200 sheets

General Information 1-3

4412-00X

Facsimile

General Compatibility ITU-G3

Scan Method CIS

Scan Width Maximum 216 mm, Effective 210 mm

Scan Resolution 600 X 1200 dpi

Scan Speed 6 seconds

Feeding Method Sheet Feed

ADF 30 sheets of 20 lb

Guide Document Input Guide

Stacker Document Output Stacker/Paper

Stacker

Paper Tray Bin Type (without Manual Tray)

Modem Speed 33.6 Kbps

Coding Method MH, MR, MMR, Error Correction Mode

LCD 2 lines of 16 characters each

Scanning Resolution and

Type

Standard: 200 X 100 dpi

Fine: 200 X 200 dpi (default)

Super Fine: 300 X 300 dpi

Color: 200 X 200 dpi

(Standard: Low quality, Fine: High

quality compression)

Contrast Darkest/Darken/Normal

Lighten/Lightest

Memory Capacity 1 Mbyte

Back-up Time 15 sec (Continuous power failure,

typically 1-2 minutes)

Confidential No

Forced Memory TX Yes

Memory RX Automatic reception when paper empty.

1-4 Service Manual

4412-00X

Telephone Speed Dial 70 locations

Chain Dial No

On-Hook Dial Yes, 1-Key

Last Number Redial Yes, 1-Key

Auto Redial Yes

Hold and Mute No

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

List

TX/RX Journal Yes

Image TCR Yes, reduction of first page sent by

Memory TX

System Data Yes

Telephone Number

List

Ye s

Self Test Yes

Copy Multipage Copy Up to 99 pages

Grayscale 256 levels

Reduction and

Enlargement

25% - 200%

(Reference is the top center of

document.)

Telephone

I/F

Answering I/F Yes

Extension Phone 1-jack, extension phone transfer

Others Sensors Paper Jam

Real-Time Clock No

RTI Yes

General Information 1-5

4412-00X

Scanner

Power and Size

Abbreviations

Compatibility TWAIN

Technology Platen CIS

Light Source for Color CIS RGB LEDs (Line Order Control)

Power Source 110V-240V / 50Hz-60Hz

Dimensions 440.6 X 319.6 X 205.4 mm

Weight (Packed) 15.3 lbs (Packed Weight)

ASF Auto Sheet Feed

B/M Bill of Material

CIS Contact Image Sensor

EOF End of Form

ESD Electrostatic Discharge

FPC Flat Printhead Cable

FRU Field Replaceable Unit

HVPS High Voltage Power Supply

LCD Liquid Crystal Display

LVPS Low Voltage Power Supply

OEM Original Equipment Manufacturer

V ac Volts alternating current

V dc Volts direct current

ZIF Zero Insertion Force

1-6 Service Manual

4412-00X

Diagnostic Information 2-1

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. Ready, ANS/FAX, and 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.

2-2 Service Manual

4412-00X

POST Symptom Table

Symptom Action

LCD or operator

panel buttons do

not work and no

motors run

Go to the “Power Service Check” on page 2-15. If okay,

go to the “Operator Panel Problems” on page 2-3.

Paper feed

gears do not

turn

Go to the “Paper Feed Service Check” on page 2-12.

Carrier does not

move

Go to the “Carrier Transport Service Check” on

page 2-7.

Carrier slams

side frame

Go to the “Carrier Transport Service Check” on

page 2-7.

CIS light does

not turn on

Go to the “CIS Assembly Service Check” on page 2-9.

Diagnostic Information 2-3

4412-00X

Symptom Tables

Locate the symptom in the following tables and take the appropriate

action.

Carrier Transport Problems

Maintenance Station Problems

Operator Panel Problems

Symptom Action

• No carrier movement

• Slow carrier movement

• Carrier stops

• Carrier slams side frame

Go to the “Carrier Transport

Service Check” on page 2-7.

Symptom Action

Maintenance station:

• Fails to cap the printheads

• Fails to clean the printheads

Go to the “Maintenance Station

Service Check” on page 2-11.

Symptom Action

• Buttons do not work

• LCD does not display

Check operator panel cable

connection at P9 on the system

board. Run the “Power-On Self

Test (POST) Sequence” on

page 2-1. If the LCD or buttons fail,

check connection P9. If the problem

remains, replace the operator panel

assembly. Go to the “Operator

Panel Assembly Removal” on

page 4-13.

If the problem still exists, replace the

system board. Go to the “System

Board Removal” on page 4-19.

2-4 Service Manual

4412-00X

Document scan sensor does not

detect document

Check operator panel cable

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.

Go to the “Operator Panel

Assembly Removal” on page 4-13.

Symptom Action

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