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CANON LBP-800, LBP-810 Laser Printer Service Manual, Parts Catalog and Cirquit Diagram

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.


CHAPTER 1 PRODUCT INFORMATION
I. FEATURES
II. SPECIFICATIONS
A. Printer
III. SAFETY INFORMATION
A. Handling the Laser/Scanner Unit
B. Toner Caution
C. Ozone Safety
IV. PARTS OF THE PRINTER
A. External View
B. Cross Section
V. INSTALLATION
A. Precautions
B. Storage and Handling of EP-22 Cartridge
VI. MAINTENANCE, CHECKS BY THE CUSTOMER
VII. OPERATION
A. Canon Advanced Printing Technology (CAPT)
B. Microsoft Windows NT4.0
C. Microsoft Windows 95/98
D. Printing Environment Setting and Test Printing

CHAPTER 2 OPERATION AND TIMING
I. BASIC OPERATION
A. Functions
B. Basic Operation Sequence
C. Power-ON Sequence
II. ENGINE CONTROL SYSTEM
A. Engine Controller PCB
B. Fixing Control Circuit
C. High-voltage Power Supply Circuit
D. Low-voltage Power Supply Circuit
E. Video Interface
III. LASER/SCANNER SYSTEM
A. Outline
B. Laser Control Circuit
C. Scanner System
IV. IMAGE FORMATION SYSTEM
A. Outline
B. Print Process
V. PICK-UP/FEED SYSTEM
A. Outline
B. Jam Detection
VI. VIDEO CONTROL SYSTEM
A. Interface Controller PCB

CHAPTER 3 THE MECHANICAL SYSTEM
I. PREFACE
II. EXTERNALS
A. Locations
B. External Covers
III. MAIN UNITS
A. Laser/Scanner Unit
B. Drive Unit
C. Feed Unit
D. Delivery Unit
E. Fixing Film Unit
IV. MAIN PARTS
A. Locations
B. Pick-up Roller
C. Separation Pad
D. Transfer Charging Roller
D. Pressure Roller
V. SWITCHES/SENSORS/LEDS
A. Locations

CHAPTER 3 THE MECHANICAL SYSTEM PREFACE
B. Paper Top Sensor/Paper-out Sensor
C. Power Switch/Test Print Switch/Door Open Detection Switch/Paper Delivery Sensor
D. Display Unit LED
VI. MOTOR/SOLENOID
A. Locations
B. Main Motor
C. Pick-up Solenoid
VII. PCBs
A. Locations
B. Interface Controller PCB
C. Engine Controller PCB
D. Display PCB

CHAPTER 4 TROUBLESHOOTING
I. PREFACE
A. Malfunction Diagnosis Flowchart
B. Initial Check
C. Test Print
II. IMAGE DEFECTS TROUBLESHOOTING
III. JAMS TROUBLESHOOTING
IV. TRANSPORT TROUBLESHOOTING
V. MALFUNCTION TROUBLESHOOTING
VI. MALFUNCTION STATUS TROUBLESHOOTING
VII. MEASUREMENT AND
ADJUSTMENT
A. Mechanical Adjustment
B. Electrical Adjustment
C. LEDs, Test Pins, Jumpers and Switches on PCBs
VIII.MAINTENANCE AND SERVICING
A. Periodic Replacement Parts
B. Expected Servicing Lives of Consumable Parts
C. Periodic Service
D. Cleaning During a Service Visit
E. Standard Tools
F. Special Tools
G. List of Lubricants and Cleaners
IX. LOCATION OF CONNECTORS

APPENDIX
I. GENERAL TIMING CHART
A. Timing Chart for Printing Two A4-size Sheet
Continuously
II. GENERAL CIRCUIT DIAGRAM
A. Engine Controller PCB
B. Interface Controller PCB
III. LIST OF SIGNALS
A. Engine Controller
IV. MESSAGES TABLE
A. Message List

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