Canon I850 User manual

i550 / i850 / i950

Service Manual

Revision 0



QY8-1385-000

6FRSH

This manual has been issued by Canon Inc. to provide the service technicians of this product with the

information necessary for qualified persons to learn technical theory, maintenance, and repair of products.

This manual covers information applicable in all localities where this product is sold. For this reason, this

manual may contain information that is not applicable to your locality.

5HYLVLRQ

This manual could include technical inaccuracies or typographical errors due to improvements or changes

made to this product. When changes are made to the contents of this manual, Canon will release technical

information as the need arises. When substantial changes are made to the contents of this manual over a long

or short period, Canon will issue a revised edition of this manual.

The following do not apply if they do not conform to the laws or regulations of the country where this manual or

product is used.

7UDGHPDUNV

Product and brand names appearing in this manual are registered trademarks or trademarks of the respective

holders.

&RS\ULJKW

another language without the written permission of Canon Inc., except in the case of internal business use.

CANON INC.

i Printer Technical Support Dept. 11, 21

16-1, Shimonoge 3-chome, Takatsu-ku, Kawasaki, Kanagawa 213-8512, Japan

I. Manual Outline

This manual is divided into the following three parts to provide information necessary to service the i550, i850,

and i950.

Part 1: M aintenance

This part describes information necessary for troubleshooting the i550, i850, and i950.

Part 2: Technical Reference

This part provides description of new technologies, etc., used in the i550, i850, and i950.

Part 3: A ppendix

This part contains block diagrams, pin layouts, and product specification lists.

Reference

This manual does not provide sufficient information for disassembly and assembly.

Refer to the figures in the separate parts catalogue.

II. Table of Contents

Page Par t 1: Ma intenance

1 - 1 1. Periodic Replacement/Periodic Inspection/Life

1 - 2 2. Troubleshooting List by Error/Symptom

1 - 5 3. Repair Details

1 - 5 3.1 Precautions

1 - 5 3.1.1 Precautions regarding ink stains

1 - 5 3.1.2 Precautions when releasing the carriage lock

1 - 5 3.1.3 Precautions when removing/installing tap screws

1 - 5 3.1.4 Code strip handling precautions

1 - 6 3.1.5 Do not loosen or remove red screws

1 - 6 3.1.6 Logic board removal precautions

1 - 7 3.2 Adjustments

1 - 7 3.2.1 Waste ink counter setting

1 - 7 3.2.2 Resetting EEPROM

1 - 8 3.2.3 Applying grease (oil)

1 - 9 3.3 Settings

1 - 9 3.3.1 Standalone printer operation

1 - 9 3.3.2 Service mode functions

1 - 11 3.3.3 Test print sample

1 - 14 3.3.4 Printing EEPROM information

1 - 15 3.4 Verification

1 - 15 4. Printer Transportation Method

Page Par t 2: Technical Reference

2 - 1 1. New Technologies

2 - 2 2. Cleaning Mode and Suction Amount

2 - 3 3. Print Mode List

2 - 6 4. FAQ

Page Par t 3: Appendix

3 - 1 1. Block Diagram

3 - 3 2. Connector Locations and Pin Layout

3 - 3 2.1 i550 Connector Locations and Pin Layout

3 - 8 2.2 i850 Connector Locations and Pin Layout

3 - 12 2.3 i950 Connector Locations and Pin Layout

3 - 16 2.4 Product Specification List

REVISION 0

QY8-31BH-000

AUG. 2002

i550 i850 i950

7819A001AA 7820A001AA 7822A001AA 120V(US)

7819A002AA 7820A002AA 7822A002AA 120V(CA)

7819A003AA 7820A003AA 7822A003AA 120V(LAM LVT)

7819A004AA 7820A004AA 7822A004AA 220V-240V(LAM HVT)

7819A005AA 7820A005AA 7822A005AA 220V-240V(EUR)

7819A006AA 7820A006AA 7822A006AA 220V-240V(DE)

7819A007AA 7820A007AA 7822A007AA 220V-240V(FR)

7819A008AA 7820A008AA 7822A008AA 220V-240V(ASA HVT)

7819A009AA 7820A009AA 7822A009AA 220V-240V(AU)

7819A010AA 7820A010AA 7822A010AA 220V-240V(KR)

7819A011AA 7820A011AA 7822A011AA 220V-240V(GB)

7819A013AA 7820A013AA 7822A013AA 120V(TW)

7819A014AA 7820A014AA 7822A014AA 220V-240V(HK)

7819A015AA 7820A015AA 7822A015AA 220V-240V(CHN)

0802 GR 0.00-0

Application

This manual has been issued by Canon Inc. for qualified

person to learn technical theory, installation, maintenance,

and repair of products. This manual covers all localities

where the products are sold. For this reason, there may be

information in this manual that does not apply to your

locality.

Corrections

This manual could include technical inaccuracies or typo-

graphical errors due to improvements or changes in the

products. When changes occur in applicable products or in

the content of this manual, Canon will release technical

information as the need arises. In the event of major

changes in the contents of this manual over a long or short

period. Canon will issue a new editions of this manual.

The following paragraph does not apply to any countries

where such provisions are inconsistent with local low.

Trademarks

The product names and company names described in this

manual are the registered trademarks of the individual com-

panies.

the copyright laws, this manual may not be copied, repro-

duced or translated into another language, in whole or in

part, without the written consent of Canon Inc.

CANON INC.

i Printer Technical Support Dept.11,21

16-1, Shimonoge 3-chome, Takatsu-ku, Kawasaki-shi,

Kanagawa 213-8512, Japan

DTP System

This manual was produced on an Apple® Power Macintosh®

G3 personal computer and Canon LBP-2030PS laser beam

printer, final pages were printed on Valityper® 4300J.

Parts layout pictures were taken using Canon Digital Camera

EOS D30, and edited with Adobe® Photoshop® 5.0.

KEY No. and Logotypes were created using MACROME-

DIA® FreeHand® 8J.

Documents and page layouts were created using

QuarkXpress® 3.3J.

Parts lists were created using Helix Tecnologies® Herix

Xpress® and converted to EPS files.

I. CONTENTS

A. PARTS LAYOUT & PARTS LIST

B. SCREWS & WASHERS LIST

C. NUMERICAL INDEX

II. ABOUT THIS MANUAL

A. PARTS LAYOUT & PARTS LIST

Parts layout illustration

a) Parts search

Find a part from the parts layout

illustration and find its key number

from the parts list to identify the part

number and name. For screws, nuts,

washers, lock washers, pins, spacers,

see SCREWS & WASHERS LIST.

Note: If parts have the same or similar

shape but different specifications,

their key number is assigned to

several part numbers and names

in the parts list.

b) Parts replacement procedure

To replace parts, the parts layout illus-

trations have figure numbers according

to the disassembly procedure of the

product. The parts that require careful

work are shown the illustration.

Parts list

a) FIGURE & KEY No.

The FIGURE & KEY No. column

corresponds to the key numbers

assigned to the parts in the parts

layout illustration.

It also corresponds to the part locations

printed on the PC board.

b) PART NUMBER

The PART NUMBER column gives the

part numbers corresponding to the key

numbers. To order a part, indicate the

part number clearly.

Note: Parts marked NPN are not service

parts.

c) RANK

The service parts with N in the RANK

column are order parts.

d) QTY

The QTY column gives the number of

parts in the corresponding components

layout illustration.

e) DESCRIPTION

The DESCRIPTION column gives the

part names in English.

To order a part, indicate the part name,

too.

Options & Consumables

These are illustrations and a list of

units that can be used as optional

consumable equipments.

Tool List

This is a list of tools used for servicing

products.

B. SCREWS & WASHERS LIST

This is a list of screws, nuts, washers,

lock washers, pins, and spacers.

The QTY column does not give the num-

ber of parts used.

C. NUMERICAL INDEX

All the parts listed in this parts catalog

are arranged in order of part number.

You can identify part locations and

names from the NUMERICAL INDEX.

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