Canon LBP-800 Manuel utilisateur

SERVICE

MANUAL

REVISION 0

AUG. 1999 RY8-13A0-000

Printed in Japan

Imprimé au Japon

Prepared by

PERIPHERAL PRODUCTS QUALITY PLANNING DIV.

PERIPHERAL PRODUCTS TECHNICAL DOCUMENTATION DEPT.

CANON INC.

5-1, Hakusan 7-chome, Toride-City, Ibaraki-Pref. 302-8501, Japan

Use of this manual should

be strictly supervised to

avoid disclosure of confi-

dential information.

PREFACE

This Service Manual contains basic information required for after-sales service of the laser beam

printer LBP-800 (hereinafter referred to as the "printer"). This information is vital to the service

technician in maintaining the high print quality and performance of the printer.

This manual consists of the following chapters:

Chapter 1: Product information

Features, specifications, operation, and installation

Chapter 2: Operation and Timing

A description of the operating principles and timing sequences of the electrical and

mechanical systems.

Chapter 3: The Mechanical System

Explanation of mechanical operation, disassembly, reassembly and adjustment

procedures

Chapter 4: Troubleshooting

Troubleshooting procedures, reference values and adjustments, maintenance and

servicing, etc.

Appendix: General timing chart, general circuit diagram, etc.

Information in this manual is subject to change as the product is improved or redesigned. All

relevant information in such cases will be supplied in the Service Information Bulletins.

A thorough understanding of this printer, based on information in this Manual and Service

Information bulletins, is required for maintaining its performance and for locating and repairing

the causes of malfunctions.

PREFACE

P - 1

PREFACE

P - 2

DTP system

This manual was produced on an Apple PowerMacintosh 9500/200 personal computer and output by an

Apple LaserWriter 16/600 PS laser beam printer; final pages were printed on AGFA Selectset avantra 25.

All graphics were produced with Macromedia FreeHand (J), and all documents and page layouts were

created with QuarkXPress (E).

The video images were captured with SONY degital video camcorder and Radius PhotoDV capture board

system, and modified with Adobe Photoshop(J).

CONTENTS

CHAPTER 1 PRODUCT INFORMATION

PREFACE

P - 3

I. FEATURES................................ 1-1

II. SPECIFICATIONS...................... 1-2

A. Printer................................. 1-2

III. SAFETY INFORMATION........ 1-4

A. Handling the Laser/Scanner

Unit ..................................... 1-4

B. Toner Caution...................... 1-4

C. Ozone Safety ....................... 1-4

IV. PARTS OF THE PRINTER.......... 1-5

A. External View ...................... 1-5

B. Cross Section....................... 1-6

V. INSTALLATION ......................... 1-7

A. Precautions.......................... 1-7

B. Storage and Handling of EP-22

Cartridge ............................. 1-8

VI. MAINTENANCE, CHECKS

BY THE CUSTOMER ................. 1-10

VII. OPERATION.............................. 1-11

A. Canon Advanced Printing

Technology (CAPT)............... 1-11

B. Microsoft Windows NT4.0 .... 1-12

C. Microsoft Windows 95/98 .... 1-49

D. Printing Environment Setting

and Test Printing................. 1-61

I. BASIC OPERATION ................... 2-1

A. Functions ............................ 2-1

B. Basic Operation Sequence.... 2-2

C. Power-ON Sequence ............. 2-3

II. ENGINE CONTROL SYSTEM...... 2-4

A. Engine Controller PCB ......... 2-4

B. Fixing Control Circuit.......... 2-8

C. High-voltage Power Supply

Circuit ................................. 2-10

D. Low-voltage Power Supply

Circuit ................................. 2-12

E. Video Interface .................... 2-14

III. LASER/SCANNER SYSTEM ....... 2-16

A. Outline ................................ 2-16

B. Laser Control Circuit ........... 2-17

C. Scanner System................... 2-20

IV. IMAGE FORMATION SYSTEM.... 2-22

A. Outline ................................ 2-22

B. Print Process ....................... 2-23

V. PICK-UP/FEED SYSTEM ........... 2-30

A. Outline ................................ 2-30

B. Jam Detection ..................... 2-32

VI. VIDEO CONTROL SYSTEM ........ 2-33

A. Interface Controller PCB...... 2-33

I. PREFACE.................................. 3-1

II. EXTERNALS ............................. 3-2

A. Locations............................. 3-2

B. External Covers ................... 3-2

III. MAIN UNITS ............................. 3-5

A. Laser/Scanner Unit.............. 3-5

B. Drive Unit............................ 3-6

C. Feed Unit............................. 3-7

D. Delivery Unit ....................... 3-8

E. Fixing Film Unit .................. 3-8

IV. MAIN PARTS............................. 3-10

A. Locations............................. 3-10

B. Pick-up Roller...................... 3-11

C. Separation Pad .................... 3-11

D. Transfer Charging Roller...... 3-13

D. Pressure Roller .................... 3-13

V. SWITCHES/SENSORS/LEDS ..... 3-15

A. Locations............................. 3-15

CHAPTER 2 OPERATION AND TIMING

CHAPTER 3 THE MECHANICAL SYSTEM

PREFACE

P - 4

B. Paper Top Sensor/

Paper-out Sensor ................. 3-16

C. Power Switch/Test Print Switch/

Door Open Detection Switch/

Paper Delivery Sensor.......... 3-16

D. Display Unit LED ................. 3-16

VI. MOTOR/SOLENOID .................. 3-17

A. Locations............................. 3-17

B. Main Motor.......................... 3-18

C. Pick-up Solenoid.................. 3-18

VII. PCBs......................................... 3-19

A. Locations............................. 3-19

B. Interface Controller PCB...... 3-20

C. Engine Controller PCB ......... 3-21

D. Display PCB ......................... 3-23

I. PREFACE.................................. 4-1

A. Malfunction Diagnosis

Flowchart ............................ 4-1

B. Initial Check........................ 4-4

C. Test Print ............................ 4-5

II. IMAGE DEFECTS

TROUBLESHOOTING................. 4-6

III. JAMS TROUBLESHOOTING....... 4-12

IV. TRANSPORT

TROUBLESHOOTING................. 4-15

V. MALFUNCTION

TROUBLESHOOTING................. 4-16

VI. MALFUNCTION STATUS

TROUBLESHOOTING................. 4-17

VII. MEASUREMENT AND

ADJUSTMENT........................... 4-20

A. Mechanical Adjustment ....... 4-20

B. Electrical Adjustment .......... 4-20

C. LEDs, Test Pins, Jumpers

and Switches on PCBs.......... 4-21

VIII.MAINTENANCE AND

SERVICING ............................... 4-22

A. Periodic Replacement

Parts.................................... 4-22

B. Expected Servicing Lives of

Consumable Parts ................ 4-22

C. Periodic Service................... 4-22

D. Cleaning During a Service

Visit .................................... 4-23

E. Standard Tools..................... 4-25

F. Special Tools ....................... 4-25

G. List of Lubricants and

Cleaners .............................. 4-26

IX. LOCATION OF CONNECTORS.... 4-27

I. GENERAL TIMING CHART ........ A-1

A. Timing Chart for Printing

Two A4-size Sheet

Continuously ....................... A-1

II. GENERAL CIRCUIT DIAGRAM... A-3

A. Engine Controller PCB ......... A-3

B. Interface Controller PCB...... A-4

III. LIST OF SIGNALS ..................... A-5

A. Engine Controller ................ A-5

IV. MESSAGES TABLE.................... A-7

A. Message List ........................ A-7

APPENDIX

CHAPTER 4 TROUBLESHOOTING

CHAPTER 1

PRODUCT INFORMATION

I. FEATURES................................ 1-1

II. SPECIFICATIONS...................... 1-2

III. SAFETY INFORMATION........ 1-4

IV. PARTS OF THE PRINTER.......... 1-5

V. INSTALLATION ......................... 1-7

VI. MAINTENANCE, CHECKS

BY THE CUSTOMER ................. 1-10

VII. OPERATION.............................. 1-11

I. FEATURES

1. Small-sized Printer with High Speed and High Resolution

This printer has paper pick-up trays on its top for space saving, and is compact enough to set

on the desk side. In addition, it has realized high speed of 8 pages per minute (A4) and high

resolution of 600 DPI.

2. Employment of Canon Advanced Printing Technology

With Canon Advanced Printing Technology in which data are processed within a host comput-

er, this printer needs no PDL converting/image processing. As a result, it has increased its

speed performance and reduced the cost.

3. Shortened Wait Time & Low Power Consumption

By adopting an on-demand fixing method that enables driving the heater only during printing,

this printer has shorten the wait time and reduced the consumption power during standby.

4. Low Noise

In addition to an on-demand fixing method, this printer has increased its heat exhaust efficien-

cy so as to remove the fan for realizing a low noise level.

5. Direct Connection to the Network

This printer enables the user to connect directly to the printer by utilizing a specified network

adapter.

CHAPTER 1

1 - 1

II. SPECIFICATIONS

A. Printer

1. Printer Engine

1) Type Desktop page printer

2) Printing method Electrophotography

3) Printing speed (Note1) 8 pages/minute (A4)

4) First print time (Note2)

•Face-down 18 seconds or less

•Face-up 17 seconds or less

5) Wait time (Note3) 8 seconds or less

6) Resolution

•Horizontal 600 dots/inch

•Vertical 600 raster lines/inch

7) Image formation system

•Laser Semiconductor laser

•Scanning system Rotating four-faced prism mirror

•Photosensitive drum OPC

•Charging Roller charging

•Exposure Laser scanning

•Toner Magnetic single-component dry toner

•Development Toner projection development system

•Toner supply Replaceable EP-22 toner cartridge (able to print approx. 2,500 A4-

sized print sheets: with image density set in the middle, and 4 %

dot density ratio)

•Image transfer Roller transfer

•Separation Curvature separation

•Cleaning Blade

•Fixing method On-demand fixing

8) Feeding Manual feed slot

Multi-purpose tray

Paper types Plain paper, recycled paper, colored paper, labels, OHT, index

cads, postcards and envelops

Paper size

•Manual feed slot 76.2 mm(W) x 127 mm(L) ~ 216 mm(W) x 356 mm(L) sized paper

(64 g/m2to 135 g/m2Canon recommended paper) and above men-

tioned paper

•Multi-purpose tray 76.2 mm(W) x 127 mm(L) ~ 216 mm(W) x 356 mm(L) sized paper

(64 g/m2to 135 g/m2Canon recommended paper) and above men-

tioned paper

Capacity

•Manual feed slot one sheet

•Multi-purpose Depth 12.5 mm (Approx. 125 sheets of 75 g/m2paper)

9) Delivery (Note4) Face-down/face-up

•Face-down tray capacity Approx. 100 sheets of 75 g/m2paper

10) Duplex printing

•Manual duplex printing The paper is picked up from the multi-purpose tray and delivered

(Note5) face-up. Only plain paper (64-135 g/m2Canon recommended

paper) can be printed duplex.

11) Operating environment

Temperature 10 ~ 32.5 °C

Humidity 20 ~ 80 % RH

CHAPTER 1

1 - 2

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