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Make/Model Information:

  • Brand:   Canon
  • Models included:
    • Canon LBP-860

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English
  • Number of pages:   230
  • File size:  ∼ 5.30  MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   BMCN-1060

NOTE:  This list was created by program script and may not accurately represent the text from the source pages.   For full preview please click on 'Download sample':

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LBP-860
SERVICE
PREFACE
This Servic e Manual contains basic information required for after-sales service of the LBP-860
laser beam printer lhereinafter referred to as the “printer”). This information is vital to the
service trchnirian in maintaining the high print quality and performance of the printer.
The rasselle paper feeder and envelope feeder are prepared for the printer as an optional
equipment, which rontenis are also described in this manual.
This manual consists of the following chapters:
Chapter 1: General Desrriplion
Features. specifications. and operation
Chapter 2: Operation ancl 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: lnstallatlon
Kequirements for a suitable location, installation procedures, plus the storage and
handling of EP-E cartridges
Chapter 5: Mainlmanre and Servicing
Parts replacement schedule, tools, lubricants. and solvents
Chapter 6: Troubleshooting
Heferenrr values and adjustments: troubleshooting procedures
Appendix: General timing chart, general circuil diagram, PCB circuit diagrams, 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 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 cause of malfunctions.
CONTENTS
CHAPTER 1 GENERAL DESCRIPTION
I. FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . .l-l IV. PARTS OF THE PRINTER . . . . . . . .l-8
II. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . 1-2 V. OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
III. A SAFETY INFORMATION
CHAPTER 2 OPERATION AND TIMING
I. BASIC OPERATION
A. Functions..
B. Outline of the Electrical
System
C. DC Controller Input
Signals
D. DC Controller Input/
Output Signals
E. Basic Sequence of
Operations..
II. LASER/SCANNER SYSTEM..
A. Outline
B. Scanning Exposure
C. Laser Control Circuit..
D. Scanner Drive..
III. IMAGE FORMATION SYSTEM . 2-15
. Outline..
B. Printing Process..
C. High-Voltage Power Supply 2-23
lV. PICK-UP/FEED SYSTEM..
A. Outline..
B. Paper Size Detection
C. Cassette Feed..
D. Fixing and Delivery Unit.. .. 2-30
E. Paper Jam Detection..
V. OVERALL CONTROL SYSTEM. 2-35
. Outline..
B. Operation..
C. Video Controller PCB..
D. Control Panel..
E. Self-test
F. Status/Error Message..
VI. POWER SUPPLIES
. Outline..
B. Protective System
VII. ENVELOPE FEEDER
A. Outline of the Electrical
System..
B. Pick-up/Feed System
C. Paper Jam Detection..
VIII. PAPER FEEDER..
A. Outline of the Electrical
System
B. Pick-up/Feed System
C. Paper Jam Detection..
CHAPTER 3 THE MECHANICAL SYSTEM
I. EXTERNAL8
A. Covers and Panels
B. Exhaust Fan..
C. Control Panel Unit..
II. DRIVE SYSTEM
A. Drive Unit
B. Main Motor..
A. Laser/Scanner Unit . . . . . . . . . . . 3-11
V. ELECTROSTATIC IMAGING/
DEVELOPING/CLEANING
SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
A. EP-E Cartridge . . . . . . . . . . . . . . . . . . . 3-12
B. Transfer Charging Roller
VI. FIXING SYSTEM . . . . . . . . . . . . . . . . . . . . . 3-14
A. Fixing Unit ..,.. . . . . . . . . . . . . . . . . . . . 3-14
VII. ELECTRONIC COMPONENTS . . 3-18
A. Video Controller Unit . . . . . . . . 3-18
B. Video Controller PCB. .
C. DC Controller PCB
D. Pick-up Motor Driver PCB.. 3-21
E. Sensor PCB
F. Power Supply
G. High-voltage Power
Supply PCB..
VIII. ENVELOPE FEEDE R
IX. PAPER FEEDER..
CHAPTER 4 INSTALLATION
I. CHOOSING A LOCATION.
II. UNPACKING AND Cartridges
INSTALLATION
111. STORAGE AND HANDLING OF Cartridges
CARTRIDGES
CHAPTER 5 MAINTENANCE AND SERVICING
I. PARTS REPLACEMENT A. Standard Tools
SCHEDULE..
II. EXPECTED SERVICE LIVES V. LIST OF LUBRICANTS.
OF CONSUMABLES.
III. PERIODIC SERVICE VI. SERVICE CHECKPOINTS
SCHEDULE..
IV. LISTS OF TOOL6..
CHAPTER 6 TROUBLESHOOTING
I. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . 6-l
A. Initial Check . . . . . . . . . . . . . . . . . . . . . 6-l
B. Basic Procedure . . . . . . . . . . . . . . . . . 6-2
C. How to Use the
Troubleshooting Tables
II. EXPLANATION FOR SPECIAL
TOOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
A. Printer Driver Tester . . . . . . . . . 6-4
III. MEASUREMENT AND
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . 6-7
A. Image Adjustment . . . . . . . . . . . . . 6-7
B. Mechanical Adjustment . . . . . 6-7
C. Electrical Adjustment . . . . . . . . 6-9
IV. IMAGE DEFECTS . . . . . . ,
A. Examples of Image Defects 6-14
B. Troubleshooting Image
Defects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
V. TROUBLESHOOTING
MALFUNCTIONS ..,. . . . . . . . . . . . . 1.1.. 6-28
VI. PAPER TRANSPORT
TROUBLESHOOTING 1.. . . . . . . . . . . . 6-42
A. Print Paper Jams . . . . . . . . . . . . . . . 6-42
B. Incomplete Paper Feed . . . . . . 6-45
VII. LOCATION OF ELECTRICAL VIILVARIABLE RESISTORS, LEDS,
PARTS/FUNCTION.. . . . . . . . . . . . . . . . . 6-46 TEST PINS, JUMPERS, AND
A. Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-46 SWITCHES ON PC BOARDS
B. Sensors and Solenoids . . . . . . . 6-48 A.DC Controller PCB . . . . . . . . . . . . . 6-56
C. Motor and Others . . . . . . . . . . . . . . 6-50 B. High-voltage Power
D. PC Boards . . . . . . . . . . . . . . . . . . . . . . . . . . 6-52 Supply PCB . . . . . . . . . . . . . . . . . . . . . . . . 6-57
E. Connectors . . . . . . . . . . . . . . . . . . . . . . . . 6-54 C. Pick-up Motor Driver PCB.. 6-58
D. Paper Feeder Driver PCB
APPENDIX
I. GENERAL TIMING CHART . . . . . . A-l VI. SENSOR CIRCUIT . . . . . . . . . . . . . . . . . . . A-l 1
II. LIST OF SIGNAL6 . . . . . . . . . . . . . . . . . . . A-3 VII. PAPER FEEDER DRIVER . . . . . . . . A-12
HI. GENERAL CIRCUIT . . . . . . . . . . . . . . . . . A-5 VIII. ENVELOPE FEEDER DFUVER . . A-13
Iv. DC CONTROLLER . . . . . . . . . . . . . . . . . . . A-7 IX. VIDEO CONTROLLER . . . . . . . . . . . . . A-14
V. PICK-UP MOTOR DRIVER . . . . . . . A-9 X. EXPANSION ROM CURCUIT . . . . A-19
CHAPTER 1
A. External View
1. Printer
Figure l-3
Figure 1-4
I: Upper cover
2: Face-down tray
3: Right rover
4: Control panel
5: Font card slot
6: Power switch
7: Cassette
8: Multi-purpose tray
9: Test print switch
10: Delivery cover
11: Power receptacle
12: Parallel interface connector
13: Serial interface connector
14: Cleaning brush
15: Paperaccessdoor
Figure 1-5
LBP-860
CATALOG


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