Lexmark x 4036, 304 schematic

• Table of Contents

• Problem Solving

• Safety and Notices

X4500 Scanner

4036-304

• Trademarks

• Index

Lexmark and Le x m ark with dia mo nd des ig n are
trademarks of Lexmark International, Inc., registered
in the United States and/or other countries.

©

4036-304

Edition: March 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 [e-mail]. 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. 2002.

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. U.S.A.

P/N 12G9084

4036-304

Table of Contents

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

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

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Service Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Ease of Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Digital Copier and Full-function Fax Machine . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Network Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Duplex Scanning through the Auto Document Feeder (ADF) . . . . . . . . . . . . . . 1-2

Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Mechanical Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Scanner Mechanism Overview and Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

External View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Internal Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Problem Solving. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

MFD Controller Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Scanner Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Cover and Glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Touch Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

ADF Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Maintenance Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Removals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Parts Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

ADF Snap-in Pad Module Removal and Mounting . . . . . . . . . . . . . . . . . . . . . . 3-4

Document Cover Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

ADF Cover Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

ADF Optical CCD Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

ADF Unit (Upper and Lower Unit) Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

User Interface Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Upper Housing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Flatbed CCD Optical Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

Carriage Motor Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

Carriage Belt Pulley Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

MFD Controller Cage Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

iii

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Hard Disk Drive, MFD Controller Card, 1394 Communications Card and Power

Distribution Board Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

Main Control Board Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

Connector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Main Scanner Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

MFD Controller Cage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Low Voltage Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-1

iv

Safety Information

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
caractéristi que s de sécurité de certains éléments ne sont pas toujours évidentes.
Lexmark ne peut être tenu responsable de l'utilisation d'autres pièces de rec ha nge.

• 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.

4036-304

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.

Safety Information v

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 Vorsichtsmaßnahm en tre ffen.

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.

4036-304

Informações de Segurança

• Este produto foi concebido, testado e aprovado para satisfazer os padrões globais
de segurança na utilização de componentes específicos da Lexma rk. 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.

vi Service Manual

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 mantenimen t 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 vii

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viii Service Manual

1. Overview

This manual is for maintenance engineers. It describes the maintenance areas,
installation, disassembly, and the main troubleshooting guides.

Take your time to read this manual thoroughly to obtain comprehensive knowledge about
the scanner before servicing the unit.

Service Guidelines

1. Before disassembling the scanner, make sure the power supply cord is disconnected
from the power outlet. Do not remove or install the connectors on the scanner with
the power supply turned ON.

2. Use caution not to drop small parts or screws inside the unit when disassembling
and reassembling.

3. Do not pull the connector cable when disconnecting it. Hold the connector.

4. When carrying the scanning head unit, put it in an anti-static bag.

5. Keep the document glass platen surface clean with a dry clean lint free cloth.

4036-304

Product Description

The 4036-304 Scanner is a multifunction solution that offers integrated print, copy, fax
and color network-scanning capabilities for increased small workgroup productivity. The
scanner is easy to use and provides low-cost access to key office functions, including fax
from workstation, network color copying, scanning, and electronic document routing.

Give your document to the scanner, and in a few steps, it scans to the network and
delivers it wherever, to whomever you want. With this scanner, inefficient trips to the
mailroom, copier, fax machine and to your workstation are a thing of the past.

Product Features

Ease of Use

The user interface on the front of the scanner looks like a panel on a copier with standard
phone keys added. The operating steps follow the same procedure as that of a copier or
fax ma ch in e.

Overview 1-1

4036-304

Digital Copier and Full-function Fax Machine

When the scanner is connected to a Lexmark printer, it performs convenient digital
copying. When connected to telephone line, the scanner performs a full fax function - to
send and to receive faxes.

Network Scanning

The scanner uses two Color Charge-Coupled Devices (CCD) when scanning. Through a
network port at the rear of the scanner, the product is able to do network scanning.

Duplex Scanning through the Auto Document Feeder (ADF)

To increase workgroup productivity, the scanner uses the advance duplex scanning
capability. The scan speed limit is 20 ppm at 300 dpi resolution. The auto document
feeder can hold up to 50 pages at one time.

1-2 Service Manual

Product Specifications

The scanner is designed to meet the following product specifications:

Scanner

Scanner Type Flatbed Scanner with ADF built in
Optical Resolution Flatbed: 300x600 dpi

Enhanced Resolution 9600x9600 dpi
Scan Speed 10 ppm at 300 dpi color for single page scanning

Scan Method Color Charge-Coupled Device (CCD)
Light Source Cold Cathode Fluorescent Lamp (CCFL)
CPU Arm 7 KS32C41000
Scan Area Max. 8.5 x 14.0 inch (legal size) for ADF
Display 640x480 color VGA touch screen
Image Types 42-bit color (internal)

Scan Accuracy Flatbed ADF

1. Leading Edge <-1 ~ +2 mm <2.5 ~ +2.5 mm

2. Side Edge <-1 ~ +2 mm <2.5 ~ +2.5 mm

3. Skew <1 mm <2 mm

4. Magnification Rate
Tolerance (Horizontal
and Vertic al )

Physical Dimension Width: 570 mm Depth: 430 mm Height: 315 mm
Weight 14 kg

4036-304

ADF: 300x300 dpi

20 ppm at 300 dpi line-art, duplex for ADF

14-bit gray (internal)
1-bit line-art, Dither, Error Diffusion

-1.5% ~ +1.5% -1.5% ~ +1.5%

Overview 1-3

4036-304

Environment:

-Operating

-Storage
Random Vibration:

-Unpacked non-op

-Package

-Bump

-Drop

Acoustic Noise Operating: 58 dB or less
Electrostatic Discharge EC 1000-4-2 ESD Standard
Safety Regulation UL, CSA, TUV/GS, SEMKO
EMC regulation FCC Part 15 Subchapter J Class A

10°C to 35°C (50°F to 95°F)
20% to 80% RH (Relative Humidity)

-40°C to 65°C (-40°F to 149°F)
10% to 90% RH (Relative Humidity)

10-200Hz, 0.005 p.s.d. (G^2/Hz)
5-200Hz, 0.015 p.s.d. -6 dB/oct
One hour in 3 major axes
Severity: 25g/6ms, 1000 times in each direction
Must meet NSTA specification
Drop Point: 1 corner, 3 edges and 6 surfaces
Total 10 times

CE Marking, C-Tick

ADF

General Specifications:

-Optical Resolution

-Document Capacity
Document:

-Document Size

-Thickness

300x300 dpi
50 sheets

Max. 8.5 x 14 inch (W x L)
Min. 4.5 x 5.5 inch (W x L)

0.05~0.15 mm

1-4 Service Manual

Theory of Operation

System Description

The Lexmark X4500 is a duplexing scanner option which can synchronously scan both
the top and bottom sides of a document in color. The major system components include a
main scanner control board, an automatic document feeder, flatbed, two optical CCD
modules (one in ADF, one in flatbed), a user interface with a touch screen panel and a
multifunction device controller cage located within the base of the scanner. The MFD
controller cage includes a 1394 communications card to communicate with the main
scanner board, a MFD controller board to process all jobs performed on the X4500, a
hard disk drive containing the operational code for the system and providing memory for
processing jobs, and a power distribution board. An external power supply provides 5, 12,
and 24 V dc to the entire scanner system.

The following figure shows the system block diagram.

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Mechanical Operation

Flatbed Operation

When scanning, place the document on the flatbed glass platen, the flatbed optical unit/
carrier moves across the underside of the glass, and scans the document. A charge­coupled device (CCD) mounts to the carrier and optically reads the image from the page.
The carrier is driven by a 2-phase stepping motor which moves the carriage at 1/300 inch
each step.

Overview 1-5

4036-304

Auto Document Feeder Operation

When using the Auto Document Feeder (ADF) mechanism, a page is fed into the ADF by
a pick roller and through the ADF by a feed roller. A separation pad located opposite to
the pick roller is used to properly feed the pages one at a time when placed on the input
tray. The flatbed optical unit/carrier is positioned to the far left so when the paper passes
through the ADF, the bottom side of the page is scanned by the flatbed CCD. The home
position sensor detects when the carrier is in the proper position for ADF scanning. In
addition, an ADF cover open sensor detects when the upper ADF assembly is open or
closed into proper operating position. The scanner cannot operate when this sensor is
open.

While the page is fed through and scanned from the bottom via the flatbed CCD, the top
side of the page is simultaneously scanned via a CCD unit positioned within the ADF unit.
As the page feeds between the two CCD units, the page discharges to the exit tray on the
left side of the ADF.

1-6 Service Manual

4036-304

Scanner Mechanism Overview and Locations

This section contains an overview of the major components of the scanner hardware.

External View

Overview 1-7

Internal Components

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1-8 Service Manual

Abbreviations

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ADF Auto Document Feeder
CCD Charge-Couple Device
CCFL Cold Cathode Fluorescent Lamp
CDB Command Descriptor Blocks
DMM Digital Multimeter
LED Light Emitting Diode
MFD Multi Function Device
PCBA Printed Circuit Board Assembly
UI User Inte r face

Overview 1-9

4036-304

1-10 Service Manual

2. Problem Solving

This chapter describes two methods to solve the operational problems. The first relies on
the scanner internal diagnostics to report error codes. The second uses troubleshooting
techniques to isolate the problem. In many cases, the internal error codes will help you to
locate the source of the problem quickly. If no error codes are reported, or if the error
codes do not locate the source of the problem, refer to the troubleshooting section.

Error Codes

MFD Controller Errors

MFD Controller Errors are errors detected by the MFD controller card within the MFD
cage pertaining to electronic cards. All MFD controller cage errors are posted to the user
interface touch screen along with audible beep codes and LED codes (visible on the
lower left side of the MFD controller card). During the Power-On Self Test procedure,
errors detected cause a number of audible beeps to be produced three times. The
corresponding LED pattern continuously displays on the controller card until the system is
powered down. Use the following tables to read the beep/LED codes and follow the
recommended repair action.

4036-304

There are two rows of four LEDs. The LEDs are visible with the MFD controller cage
detached from the scanner. The LED pattern depicts which LEDs are illuminated in the
two rows. Use caution when removing the cage from the scanner while the system is
powered up.

Error
Number

21 2 Modem not found Modem on the MFD

22 2 PCI Bus failure Replace the MFD

24 2 Serial Port failure Problem with TT Y/

Number
of
Beeps

LED Pattern

Error Message
Displayed to UI

Action

controller card is not
found. Replace the
MFD controller board.

controller board.

Serial P ort. Replac e the
MFD controller board.

Problem Solving 2-1

4036-304

Error
Number

28 2 Problem with the CPU Replace the MFD

31 3 (No Hard Drive Found)

32 3 (Missing OS)

Number
of
Beeps

LED Pattern

Error Message
Displayed to UI

Note: Error code

message not displayed
on the user interface.
Only beep code and
LED patterns are
generated for this error.

Note: Error code
message not displayed
on the user interface.
Only beep code and
LED patterns are
generated for this error.

Action

controller board.

Check connections to
the hard disk drive and
associated cables for
continuity . Check power
going to the hard disk
drive. Replace the
power distribution card
if no power is present. If
power is present,
replace the hard disk
drive.

The OS is not found.
Replace or ref o rmat the
hard drive.

34 3 Hard Drive failure There was an error

writing to the hard drive
or the OS is corrupt.
Replace or ref o rmat the
hard disk drive.

41 4 Scanner Interface not

found

51 5 (No Memory)

Note: Error code
message not displayed
on the user interface.
Only beep code and
LED patterns are
generated for this error.

The scanner image
processing board was
not found. Check
connections to the
interface board. If
connections are good,
replace the 1394
communications board.

The memory DIMM was
not detected or not
functioning. Replace
the memory DI MM.

2-2 Service Manual

4036-304

Error
Number

52 5 Not Enough Memory The memory DIMM was

71 7 User Interface failure A proble m was detect ed

Number
of
Beeps

LED Pattern

Error Message
Displayed to UI

Action

found, but not enough
memory is present.
Replace the memory
DIMM.

with the user interface.
Check the connection
of all cables connecting
the UI to the MFD
controller board. If
cables a re okay, replace
the user interface. If
problem persists,
replace the MFD
controller board.

Problem Solving 2-3

4036-304

Scanner Errors

Scanner Errors are errors detected within the scanner mechanism and auto document
feeder assembly. These errors appear on the user interface touch screen along with a
number of flashes of the flatbed CCD lamp (the flash sequence is repeated 10 times).
See the following table for an explanation of each error code and the corrective action to
resolve the problem.

Number of CCD
Lamp Flashes

1 Oasis 1 SDRAM failure Replace the main scanner

2 Oasis 2 SDRAM failure Replace the main scanner

3 CPU SDRAM failure Replace the main scanner

4 Flatbed A/D Dark Calibration

5 ADF A/D Dark Calibration

6 Home Sensor failure Check the flatbed motor, belt

Error Message Display ed
to UI

Error

Error

Action

board.

board.

board.
Replace the flatbed optical

unit assembly. If problem
persists, replace the main
scanner board.

Replace the ADF optical unit.
If problem persists, replace the
main scanner board.

and home position sensor for
proper operation. Replace any
defective parts. If no defective
parts are found, replace the
main scanner board.

None SCSI Command Not

None Invalid field in CDB Replace the main scanner

2-4 Service Manual

7 Flatbed Lamp failure Check the flatbed optical unit

for proper connection.
Replace the flatbed optical
unit if necessary.

8 ADF Lamp failure Check the ADF optical unit for

proper connection. Replace
the ADF optical unit if
necessary.

Replace the main scanner

Supported

board.

board.

4036-304

Number of CCD
Lamp Flashes

None Could not match scanner,

Error Message Display ed
to UI

aborting

Action

The MFD controller cage
could not find the rest of the
scanner. Make sure the USB­style cable is properly
connected between the 1394
communications board and
main scanner control board.

If problem persists, replace the
main scanner board. If
problem persists, replace
1394 communications board.

Problem Solving 2-5

Troubleshooting

The tables in this section provide detailed troubleshooting information.

The Power does not come on

4036-304

Cause

Unplugged
from outlet

AC power
unplugged at
power supply

Power switch
is OFF

Power supply
power
distribution
board
connection
failure

Power supply
output voltage
failure

Power
distribution
board

Relevant
Unit

None Visual check Insert the ac

LVPS Visual check Insert the ac

None Visual check Turn the power

None Visual check Connect the

LVPS Tester check

Power
distribution
board

Check * Action

plug into the
outlet.

cable into
power supply.

switch on.

connector.

Replace the
the LVPS
(+5V +12V,
+24V, GND)

Tester check
(+5V, GND)

power supply.

Replace the

failed power

distribution

board.

2-6 Service Manual

MFD
controller
board

* Check explains how to check the failed item.To do a visual check observe the part or
observe the offline test display on the front panel. To do a tester check, check the voltage
levels of the relevant units. (See Connector Locations.)

MFD
controller
board

None If problem still

exists, replace

MFD controller

board.

4036-304

Scan module does not move to lock position

Cause

Home
position
sensor board
failure

Motor-main
control PCBA
connection
failure

Motor failure Carrier motor Visual check Replace the

Power supply­main control
board
connection
failure

Power supply
fails.

Relevant
Unit

CCD board Tester check Replace the

None Visual check Connect the

None Visual check Connect the

Power supply Tester check

Check Action

CCD PCBA.

connector.

carrier motor.

connector.

Replace the

(+24V, GND)

power supply.

Problem Solving 2-7

4036-304

Scan module does not move to the home position

Cause

Home
position
sensor board­main control
PCBA
connection
failure

Home
position
sensor board
failure

Power supply­main control
board
connection
failure

Power supply
fails

Lamp failure Lamp Visual check Replace the

Relevant
Unit

None Visual check Connect the

Sensor in the
flatbed CCD
assembly

None Visual check Connect the

Power supply Tester check

Check Action

connector.

Tester check Replace the

flatbed CCD

optical unit.

connector.

Replace the
(+5V, +24V,
GND)

power supply.

flatbed CCD

optical unit.

Inverter
failure

CCD board­main scanner
board
connection
failure

CCD board
fails

Inverter Visual check Replace the

flatbed CCD

optical unit.

None Visual check Connect the

connector.

CCD board Tester check Replace the

flatbed CCD

optical unit.

2-8 Service Manual

4036-304

Scan module does not move to the flatbed position

Cause

Power supply­main scanner
board
connection
failure

Power supply
fails

Motor-main
scanner
board
connection
failure

Motor failure Carrier motor Visual check Replace the

Belt broken or
loose

Relevant
Unit

None Visual check Connect the

Power supply Tester check

None Visual check Connect the

Carrier belt Visual check Reposition belt

Check Action

connector.

Replace the
(+5V, +24V,
GND)

power supply.

connector.

carrier motor.

or replace if

defective.

Reading is not performed

Cause

ADF cover
open

Relevant
Unit

ADF cover Visual check Close the ADF

Check Action

cover.

Problem Solving 2-9

Image does not appear

4036-304

Cause

ADF cover
open

1394
Communica­tion board­main control
board
connection
failure

Lamp Inv erter
failure

CCD board­main scanner
board
connection
failure

CCD board
fails

Relevant
Unit

ADF cover Visual check Close the ADF

None Visual check Connect the

Lamp inverter Visual check Replace the

None Visual check Connect the

CCD board Visual check Replace the

Check Action

cover.

connector.

CCD optical
unit.

connector.

optical unit.

2-10 Service Manual

Large jitter

4036-304

Cause

1394
Communica­tion - main
control board
connection
failure

Motor-main
scanner
PCBA
connection
failure

Motor failure Carrier motor Visual check Replace the

Relevant
Unit

None Visual check Connect the

None Visual check Connect the

Check Action

connector.

connector.

carrier motor.

Problem Solving 2-11

4036-304

Reading position deviation

Cause

Motor-main
scanner
PCBA
connection
failure

Motor failure Carrier motor Visual check Replace the

Home
position
sensor board­main scanner
PCBA cable
failure

Home
position
sensor board
failure

Relevant
Unit

None Visual check Connect the

Flatbed CCD
optical unit
cable

Flatbed CCD
optical unit

Check Action

connector.

carrier motor.

Tester or
visual check

Tester check Replace the

Replace the
flatbed CCD
optical unit
cable.

flatbed CCD
optical unit.

2-12 Service Manual

Image unclea r

4036-304

Cause

Lamp too
dark

Dirt on
calibration
reference
plate

Dirt on the
mirrors

Dirt on the
lens

Relevant
Unit

Lamp Visual check Replace CCD

Calibration
reference
plate

Mirrors Visual check Clean the

Lens Visual check Clean the lens

Check Action

optical unit.
Visual check Clean the

flatbed glass

with isopropyl

alcohol.

mirrors with

isopropyl

alcohol.

with isopropyl

alcohol.

Problem Solving 2-13

4036-304

Strange Sound Generated (flatbed)

Cause

Motor unit
failure

Main scanner
card failure

Scanning
module

Dirt on rail None Visual check Clean the rail

Relevant
Unit

Motor unit Visual check Replace the

Main scanner
card

Scanning
module

Check Action

carrier motor.

Replace the
main scanner
card.

Check if
scanning
module is
loose.

Replace the
main scanner
card.

Replace the
flatbed CCD
optical unit.

with isopropyl
alcohol.

Frequent paper jam, double feed or skew

Cause

Paper setting
failure

Relevant
Unit

Operation
error

Check Action

Is the paper
correctly set
in the paper
chute?

Teach users to
properly
position the
paper.

Paper failure Op eration

error

ADF
connector
slip-off

Pad assembly
failure

ADF unit
failure

ADF unit Visual check

Pad assembly Check the

ADF unit Replace the

Is the
specified
paper used?

of motor
rotation

pad assembly
for wear and
tear.

ADF unit.

None

Connect the
connector.

Clean/replace
the pad
assembly/touch
spring unit

Replace the
ADF unit.

2-14 Service Manual

4036-304

Strange sound generated (ADF)

Cause

Paper setting
failure

Paper failure Operation

ADF
connector
slip-off

ADF unit
failure

Relevant
Unit

Operation
error

error

ADF unit Visual check

ADF unit Replace the

Check Action

Is the paper
correctly set
in the paper
chute?

Is the
specified
paper used?

of motor
rotation

ADF unit.

Teach users to

properly

position the

paper.

None

Connect the

connector.

Replace the

ADF unit.

Problem Solving 2-15

4036-304

2-16 Service Manual

3. Maintenance

This chapter describes cleaning methods maintenance parts replacement, and
adjustment and lubrication necessary for normal scanner operation.

Perform preventative maintenance in the shorter term either every six months or every
60,000 sheets scanning.

Cleaning

Cover and Glass

With soft cloth, wipe the cover and glass. If the dirt is heavy, use a neutral cleanser or
alcohol. Wipe the glass carefully so no cleanser remains on the surface.

Touch Screen

Wipe the touch screen with a clean, lint-free cotton cloth dampened with water.

4036-304

ADF Unit

Push the ADF unit backward to open the unit. Clean the pad assembly and feed roller in
the ADF with a lint-free cloth and isopropyl alcohol. Clean the pad assembly by wiping it
in the direction of the arrow as shown.

Maintenance 3-1

Maintenance Tools

The following table describes the tools necessary for the maintenance of this scanner.

Name Description

Flathead screwdriver Idler pulley module screw
Phillips screwdriver (magnetic) Nominal No.2 M3, M4
Nut driver 6 mm
Digital voltmeter With 0.01 V range
Chip Puller Puller for main scanner board chip

4036-304

Removals

Parts Replacement

1. Clean the disassembly and assembly location.

2. Turn off the power switch and remove the AC plug from the outlet before
disassembly and assembly.

3. Follow the disassembly and assembly procedures. Never loosen the screws of parts
that must not be disassembled. These scre ws have a red coating.

4. Store the disassembled parts in a clean place to avoid loss.

5. After replacement, check the contacts and spare part mounting.

6. Assemble in the reverse order of disassembly.

3-2 Service Manual

4036-304

CCD Board Screws

Screws for the CCD board in the optical unit are as shown. These screws have a red
coating indicating they should never be loosened.

Flatbed CCD Optical Unit

ADF CCD Optical Unit

Maintenance 3-3

4036-304

ADF Snap-in Pad Module Removal and Mounting

After scanning approximately 100,000 pages through the ADF, the ADF pad module may
be worn and you may experience problems with document feeding. In this case, replace
the ADF pad module.

To remove the ADF snap-in pad module:

1. Push the ADF unit backward.

2. Gently pull out the snap-in pad module.

To mount the ADF snap-in module,

1. Hold both arms of the snap-in pad module.

2. Gently place the module into the pad holder.

Note: Inspect the feed roller and clean as necessary.

3-4 Service Manual

4036-304

Document Cover Remo val

Lift the document cover to remove the studs from the hinge holes. The studs are loosely
attached to the hinge holes to accommodate the depth of the original.

ADF Cover Removal

Remove the two ADF cover screws and lift the ADF cover.

Maintenance 3-5

4036-304

ADF Optical CCD Unit Removal

Warning: Do not loosen any screws with red coating.

1. Remove the ADF cover. Go to “ADF Cover Removal” on page 3-5. Remove the
two screws from the ADF optical CCD unit as shown, and pull out the unit.

2. Use a flat screwdriver to raise the latch and remove the inverter board.

3. Disconnect the lamp connector from the inverter board.

3-6 Service Manual

4036-304

4. Disconnect the two CCD connectors.

5. Remove the ADF optical CCD unit.

ADF Unit (Upper and Lower Unit) Removal

1. Remove the ADF optical CCD unit. Go to “ADF Optical CCD Unit Removal” on

page 3-6.

2. Remove the screws located at the four corners of the ADF unit.

Maintenance 3-7

4036-304

3. Disconnect 15PIN ADF motor/sensor cable from ADF motor/sensor card.

4. Lift the ADF unit and remove it.

3-8 Service Manual

4036-304

Note: The upper and lower units of the ADF unit can now be separated.

User Interface Removal

1. Remove the document output tray and document cover.

2. Place the scanner on its back.

3. Remove the three screws to loosen the user interface from the scanner.

Maintenance 3-9

4036-304

4. Place the scanner right side up and slide the user interface forward.

5. Disconnect the cables.

3-10 Service Manual

4036-304

6. Remove the right side touch screen support bracket to disconnect the ground wire.

7. Remove the user interface gently.

Maintenance 3-11

4036-304

Upper Housing Removal

1. Remove the ADF unit. Go to “ADF Unit (Upper and Lower Unit) Removal” on

page 3-7.

2. Remove the user interface. Go to “User Interface Removal” on page 3-9.

3. Remove the four rubber pads with a flat screwdriver.

4. Remove the screws beneath the rubber pads.

3-12 Service Manual

4036-304

5. Remove the four screws on the left side of the housing.

6. Remove the five screws form the front of the housing.

7. Remove the upper housing.

Maintenance 3-13

4036-304

Flatbed CCD Optical Unit Removal

Warning: Do not loosen any screws with red coating.

1. Remove the upper housing. Go to “Upper Housing Removal” on page 3-12.

2. Press the pulley on the carriage belt pulley assembly toward the center of the unit
and remove the carriage belt from the pulley.

3-14 Service Manual

4036-304

3. Remove the sliding rod and the flat cable. (See following figures.) Warning: Be very
careful when handling the flatbed optical CCD. The lamp is exposed and can be
easily broken. Do not touch.

4. Take out the flatbed optical CCD.

5. Disconnect the belt from the side of the flatbed optical CCD.

Maintenance 3-15

4036-304

Carriage Motor Assembly Removal

1. Remove the upper housing unit. Go to “Upper Housing Removal” on page 3-12.

2. Press the pulley on the carriage belt pulley assembly toward the center of the unit
and remove the carriage belt from the pulley.

3. Disconnect connector from carriage motor assembly.

4. Remove the three screws from carriage motor assembly.

5. Remove the carriage motor.

Carriage Belt Pulley Assembly Removal

1. Remove the upper housing unit.

2. Press the pulley on the carriage belt pulley assembly toward the center of the unit
and remove the carriage belt from the pulley.

3. Remove the two screws.

4. Remove the carriage belt pulley assembly.

MFD Controller Cage Removal

1. Remove the document output tray and document cover.

2. Place the scanner on its back.

3. Remove eight screws from the bottom housing.

3-16 Service Manual

4036-304

4. Lower MFD controller cage and disconnect the three connectors and ground wire.

Maintenance 3-17

4036-304

5. Swing the MFD controller cage assembly to the right and disconnect the two cables.
Use a screwdriver on the lower cable connector to unlatch the connector.

3-18 Service Manual

6. Remove the MFD controller cage.

Note: When reinstalling the USB-style cable to the main control board, connect the cable
to the upper connector.

4036-304

Hard Disk Drive, MFD Controller Card, 1394
Communications Card and Power Distribution Board
Removal

1. Remove the MFD controller cage. Go to “MFD Controller Cage Removal” on

page 3-16.

2. With the MFD controller cage positioned upside down near an edge of a table,
remove the two screws from the back side and three screws from the bottom.

3. Turn the MFD controller cage right side up and lift the upper shield from the cage.

Maintenance 3-19

4036-304

4. Remove the component you want from within the MFD cage.

3-20 Service Manual

4036-304

Main Control Board Removal

1. Remove the MFD controller cage. Go to “MFD Controller Cage Removal” on

page 3-16.

2. Remove the screws securing the main control board.

3. Disconnect the cables and remove the board.

Maintenance 3-21

4036-304

3-22 Service Manual

Note: When replacing the main scanner control board with a new one, remove the

EPROM from the old board (with a chip puller) and install it in the new board. This
EPROM contains settings unique to the scanner.

4. Connector Locations

The pin assignments shown are voltages and grounds which can be tested in the field.
Use a multimeter grounded to the scanner MFD controller cage when measuring the
voltage for the main scanner board.

Main Scanner Board

ADF Video Circuit J7:

Pin No. Assignment

1Ground
3Ground
5Ground

1234-XXX

ADF Video Circuit J8:

Pin No. Assignment

1Ground
2+24V dc
3Ground
4Ground
5Ground

9 +5V dc
12 Ground
13 Ground
14 +24V dc

Flatbed Video Circuit J9:

Pin No. Assignment

14 +24V dc
15 Analog Ground

Connector Locations 4-1

1234-XXX

MFD Controller Cage

All components within the MFD controller cage are self diagnosed. Any errors are
reported as MFD controller cage errors.

Low Voltage Power Supply

The following diagram and chart represents the power supply output connector.

Pin No. Wire Color Assignment

1 Black Ground
2 Black Ground
3 Black Ground
4 Black Ground
5 Black Ground
6 Black Ground
7 W hi te +24V dc
8Red +5V dc

9 Yellow +12V dc
10 Red +5V dc
11 Red +5V dc
12 Red +5V dc

4-2 Service Manual

5. Parts Catalog

4036-304

Parts Catalog 5-1

Assembly 1: Upper Scanner

4036-304

5-2 Service Manual

Assembly 1: Upper Scanner

4036-304

Asm­Index

Part
Number

Units Description

1 56P0170 1 Tray, Document Input
2 56P0024 1 Cover, Scanner Document
3 56P0032 1 Cover, Upper with Glass
4 56P0020 1 User Interface, Complete
5 56P0030 1 Assembly, Lower ADF
6 56P0023 1 Tray, Document Output
7 56P0025 1 Assembly, ADF Optical Unit
8 56P0029 1 Assembly, Upper ADF

9 56P0079 1 Pad, Pick Roller
10 56P0028 1 Sensor, Paper F eed
11 56P0027 1 Sensor, Paper Present
12 56P0026 1 Board, ADF Motor/Sensor

Parts Catalog 5-3

Assembly 2: Lower Scanner

4036-304

5-4 Service Manual

Assembly 2: Lower Scanner

4036-304

Asm­Index

Part
Number

Units Description

1 56P0036 1 Cable, ADF CCD (6PIN + 14PIN)

2 56P0035 1 Cable, ADF Motor/Sensor (15PIN)

3 56P0033 1 Pulley Assembly, Carriage Belt

4 56P0031 1 Assembly, Flatbed CCD Optical Unit

5 56P0308 1 Card Assembly, Flatbed CCD Lamp Invertor

6 56P0037 1 Belt, Carriage

7 56P0042 1 Cable , Flatbed Optical Unit

8 56P0034 1 Motor Assembly, Carriage

9 56P0021 1 Board, Main Scanner Control
10 12G6918 1 Power Supply, Universal, External
11 11D0328 1 Line Cord, US, Canada, APG (LV), LAD (LV)
11 11D0329 1 Line Cord, Peru
11 11D0330 1 Line Cord, Argentina
11 11D0331 1 Line Cord, Brazil
11 11D0332 1 Line Cord, Chile
11 11D0333 1 Line Cord, Denmark
11 11D0334 1 Line Cord, France, Germany, Spain, Belgium, England, Europe
11 11D0335 1 Line Cord, Italy
11 11D0336 1 Switzerland
11 11D0337 1 Line Cord, UK, Ireland, Egypt
11 11D0338 1 Line Cord, Israel
11 11D0339 1 Line Cord, South Africa
11 99A0471 1 Line Cord, PRC
12 56P0192 1 Board, Power Distribution
13 56P0022 1 Board, 1394 Communications
14 56P0076 1 Drive Assembly, Hard Disk
15 56P0064 1 Board, Controller, WW non-Australia/New Zealand
15 56P0065 1 Board, Controller, Australia/New Zealand

Parts Catalog 5-5

Assembly 2 (cont.): Lower Scanner

4036-304

5-6 Service Manual

4036-304

Assembly 2 (cont.): Lower Scanner

Asm­Index

16 12G9063 1 Fan, CPU Cooling
17 56P9910 1 Card Assembly, 128MB DIMM

NS 56P0558 1 Cable, RJ11 with Toriod
NS 56P0559 1 Cable, RJ45 with Toriod

Part
Number

Units Description

Parts Catalog 5-7

4036-304

5-8 Service Manual

Index

4036-304

A

Abbreviations 1-9

C

Cleaning

ADF Unit
Cover and Glass
Touch Screen

Connector Locations

3-1

3-1

3-1

4-1

E

Error Codes

MFD Controller
Scanner

2-4

2-1

M

Maintenance 3-1
Maintenance Tools

3-2

O

Overview 1-1

P

Parts Catalog 5-1
Parts Replacement
Problem Solving
Product Description
Product Features
Product Specifications

3-2

2-1

1-1

1-1

1-3

R

Removals

ADF Cover
ADF Optical CCD Unit
ADF Snap-in Pad Module
ADF Unit
Carriage Belt Pulley Assembly
Carriage Motor Assembly
Communications Card, 1394
Document Cover
Flatbed CCD Optical Unit
Hard Disk Drive
Main Control Board
MFD Controller Cage
MFD Controller Card
Power Distribution Board
Upper Housing
User Interface

3-5

3-7

3-5

3-19

3-21

3-12

3-9

3-6

3-16

3-19

3-4

3-16

3-14

3-19

3-16

3-19

S

Safety Information v

T

Theory of Operation

Mechanical Operation
System Description

Troubleshooting

2-6

U

Unit 3-1

Part Numbers

11D0328 5-5
11D0329
11D0330
11D0331
11D0332
11D0333
11D0334
11D0335
11D0336
11D0337
11D0338
11D0339
12G6918
12G9063
56P0020
56P0021
56P0022
56P0023
56P0024
56P0025
56P0026
56P0027
56P0028
56P0029
56P0030
56P0031
56P0032
56P0033
56P0034
56P0035
56P0036
56P0037
56P0042
56P0064
56P0065
56P0076

5-5
5-5
5-5
5-5
5-5
5-5
5-5
5-5
5-5
5-5
5-5

5-5

5-7
5-3
5-5
5-5
5-3
5-3
5-3
5-3
5-3
5-3
5-3
5-3
5-5
5-3
5-5
5-5
5-5
5-5
5-5
5-5
5-5
5-5
5-5

1-5

1-5

I-1

4036-304

56P0079
56P0170
56P0192
56P0308
56P0558
56P0559
56P9910
99A0471

5-3
5-3
5-5
5-5
5-7
5-7
5-7
5-5

I-2 Service Manual