Canon LBP-1000 Manuel utilisateur

LBP-1000

SERVICE

MANUAL

REVISION 0

JAN. 2000 RY8-13A1-000

Printed in Japan

Imprimé au Japon

Prepared by

PERIPHERAL PRODUCTS QUALITY ADVANCEMENT 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-1000 (hereinafter referred to as the "printer"). This information is vital to the ser-

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

The paper feeder, which is prepared for the printer as option, is also described in this manu-

al.

This manual consists of the following chapters:

Chapter 1: Product information

Features, specifications, 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 ...................... 1-3

III. SAFETY INFORMATION........ 1-6

IV. PARTS OF THE PRINTER.......... 1-7

V. INSTALLATION ......................... 1-10

VI. MAINTENANCE AND

SERVICING BY THE

CUSTOMER .............................. 1-17

VII. OPERATION .............................. 1-18

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

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

B. Basic Operation Sequences .. 2-2

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

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

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

B. Fixing Control Circuit.......... 2-9

C. High-voltage Power Supply

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

D. Low-voltage Power Supply

Circuit ................................. 2-14

E. Video Interface Control ....... 2-15

F. Other Controls..................... 2-17

III. LASER/SCANNER SYSTEM ....... 2-18

A. Outline ................................ 2-18

B. Laser Control Circuit ........... 2-19

C. Scanner System................... 2-22

IV. IMAGE FORMATION SYSTEM.... 2-24

A. Outline ................................ 2-24

B. Printing Process .................. 2-25

V. PICK-UP/FEED SYSTEM ........... 2-32

A. Outline ................................ 2-32

B. Fixing and Delivery Unit...... 2-35

C. Paper Jam Detection ........... 2-36

VI. VIDEO CONTROL SYSTEM ........ 2-38

A. Video Controller Circuit....... 2-38

B. Operation Panel ................... 2-43

C. Self Test .............................. 2-44

VII. PAPER FEEDER ........................ 2-47

A. Outline ................................ 2-47

B. Pick-up and Feeding ............ 2-48

C. Paper Jam Detection ........... 2-51

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

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

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

III. MAIN UNITS ............................. 3-7

A. Laser/Scanner Unit.............. 3-7

B. Drive Unit............................ 3-7

C. Cassette Pick-up Unit .......... 3-8

D. Registration Roller Unit....... 3-8

E. Fixing Unit .......................... 3-9

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

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

B. Multi-purpose Tray

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

C. Separation Pad (multi-

purpose tray) ....................... 3-11

D. Cassette Pick-up Roller........ 3-12

E. Separation Pad (Cassette) .... 3-12

F. Lower Registration Roller .... 3-13

G. Registration Shutter ............ 3-13

H. Transfer Charging Roller...... 3-14

I. Fixing Film Unit .................. 3-14

J. Pressure Roller .................... 3-15

CHAPTER 2 OPERATION AND TIMING

CHAPTER 3 THE MECHANICAL SYSTEM

PREFACE

P - 4

V. SWITCHES/SENSORS ............... 3-16

A. Locations............................. 3-16

B. Multi-purpose Tray Paper

Sensor ................................. 3-17

C. Delivery Sensor ................... 3-17

D. Interlock Switch .................. 3-18

E. Top-of-Page Sensor/

Cassette Paper Sensor/

Test Print Switch................. 3-18

VI. SOLENOIDS .............................. 3-19

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

B. Multi-purpose Tray

Pick-up Solenoid.................. 3-20

C. Cassette Pick-up Solenoid.... 3-20

VII. MOTOR/FAN............................. 3-21

A. Locations............................. 3-21

B. Main Motor.......................... 3-22

C. Cooling Fan ......................... 3-22

VIII.PCBS ........................................ 3-23

A. Locations............................. 3-23

B. Engine Controller PCB ......... 3-24

C. Intermediate PCB ................ 3-25

D. Video Contoller PCB ............ 3-26

Connector 1 PCB/Connector 2 PCB

... 3-27

IX. PAPER FEEDER ........................ 3-28

A. Locations............................. 3-28

B. Disassembly and

Reassembly.......................... 3-29

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

A. Malfunction Diagnosis

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

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

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

II. IMAGE DEFECTS ...................... 4-8

III. PAPER JAMS

TROUBLESHOOTING................. 4-14

IV. PAPER TRANSPORT

TROUBLESHOOTING................. 4-19

V. MALFUNCTION

TROUBLESHOOTING................. 4-20

VI. MALFUNCTION STATUS

TROUBLESHOOTING................. 4-21

VII. MEASUREMENT AND

ADJUSTMENT........................... 4-27

A. Mechanical Adjustment ....... 4-27

B. Electrical Adjustment .......... 4-27

C. Variable Resistors, LEDs,

Test Pins, Jumpers and

Switches on PCBs ................ 4-28

VIII.MAINTENANCE AND

SERVICING ............................... 4-31

A. Periodic Replacement

Parts ................................... 4-31

B. Expected Service Lives of

Consumable Parts ................ 4-31

C. Periodic Service................... 4-31

D. Cleaning during a Service

Visit .................................... 4-32

E. Standard Tools..................... 4-34

F. Special Tools ....................... 4-35

G. Solvents and Oil List ........... 4-36

IX. LOCATION OF CONNECTORS.... 4-37

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

II. GENERAL CIRCUIT DIAGRAM... A-3

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

IV. MESSAGE TABLE...................... A-11

APPENDIX

CHAPTER 4 TROUBLESHOOTING

CHAPTER 1

PRODUCT INFORMATION

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

II. SPECIFICATIONS ...................... 1-3

III. SAFETY INFORMATION........ 1-6

IV. PARTS OF THE PRINTER.......... 1-7

V. INSTALLATION ......................... 1-10

VI. MAINTENANCE AND

SERVICING BY THE

CUSTOMER .............................. 1-17

VII. OPERATION .............................. 1-18

I. FEATURES

1. High speed printing

With a built-in high-speed video controller employing a high-performance RISC processor

PowerPC for its compact design, this printer has capabilities of printing a maximum of 10 pages

per minute in A4 or letter-size paper.

2. High resolution

This printer provides clear images and characters using Super Fine Particle Toner and

Automatic Image Refinement for its printer engine corresponding to 1200 dpi.

3. Paper handling for various media

This printer is capable of handling various paper media. The cassette can accommodate from

A5 to legal-size plain paper. Special media, such as OHTs, labels, and envelopes can be print-

ed from the multi-purpose tray. With the optional paper feeder installed in the printer, up to

600 sheets can be loaded.

4. Memory saving technology

The Memory Reduction Technology enables printing on A4 or letter-size paper at the resolutions

of 1200 ×1200 dpi with only 4 Mbytes of memory.

5. Energy saving/Toner consumption reduction

Energy saving functions, such as the On-Demand Fixing Method, enable low-power consump-

tion. The Economy Mode allows the printer to use less toner than usual for lighter printing so

that the toner consumption can be reduced.

6. PDL auto-switching

This printer supports the Hewlett-Packard's PCL6 printer language. Also, Adobe PostScript 3

can be provided by installing the optional Canon Adobe PostScript 3 Module A-32. This enables

PDL auto-switching for PCL and PostScript based on the received data.

7. Interface feature

This printer utilizes two IEEE 1284 Standard parallel interfaces, one supports ECP and the

other supports the Compatible and Nibble protocols. The optional adapter enables this printer

to employ a third party network module.

CHAPTER 1

1 - 1

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CHAPTER 1

1 - 2

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