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Make/Model Information:

  • Brand:   Canon
  • Models included:
    • Canon LBP-1760

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English
  • Number of pages:   332
  • File size:  ∼ 9.32  MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   BMCN-1057

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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SERVICE
MANUAL
REVISION 0
RY8-1387-000 MAY 1998
LBP-1760
PREFACE
This Service Manual contains basic information required for after-sales service of the laser beam
printer LBP-1760 (here after referred to as the “printer”). This information is vital to the service
technician in maintaining the high print quality and performance of the printer.
The paper feeder, envelope feeder and duplexing unit, which are prepared for the printer as
options, are described in this manual.
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 pro-
cedures
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.
CONTENTS
CHAPTER 1 PRODUCT INFORMATION
I. FEATURES
II. SPECIFICATIONS
III. SAFETY INFORMATION
IV. PARTS OF THE PRINTER
V. INSTALLATION
VI. MAINTENANCE AND
SERVICING BY THE
CUSTOMER
VII. OPERATION
CHAPTER 2 OPERATION AND TIMING
CHAPTER 3 THE MECHANICAL SYSTEM
I. BASIC OPERATION
A. Functions
B. Basic Operation Sequences 2-2
C. Power ON Sequence
II. ENGINE CONTROL SYSTEM
A. Engine Controller PCB
B. Fixing Control
C. High-Voltage Power Supply
Circuit
D. Low-Voltage Power Supply
Circuit
E. Video Interface Control
F. Other Controls
III. LASER/SCANNER SYSTEM
A. Outline
B. Laser Control Circuit
C. Scanner System
IV. IMAGE FORMATION SYSTEM . 2-28
A. Outline
B. Printing Process
V. PICK-UP/FEED SYSTEM
A. Outline
B. Paper Size Detection
C. Cassette Pick-up
D. Multi-purpose Tray
Pick-up
E. Fixing and Delivery Unit
F. Paper Jam Detection
VI. VIDEO CONTROL SYSTEM
A. Video Controller Circuit
B. Adapter Circuit
C. Operation Panel
D. Self Test
VII. PAPER FEEDER
A. Outline
B. Pick-up and Feeding
C. Paper Jam Detection
VIII.ENVELOPE FEEDER
A. Outline
B. Pick-up and Feeding
C. Paper Jam Detection
IX. DUPLEXING UNIT
A. Outline
B. Reversing and duplexing
unit Pick-up
C. Paper Jam Detection
I. EXTERNALS
A. External Covers
B. Pick-up Module
C. Cooling Fan
D. Operation Panel
II. DRIVE SYSTEM
A. Drive Unit
B. Main Motor
C. Pick-up Drive Unit
III. PAPER TRANSPORT SYSTEM . 3-11
A. Cassette Pick-up Roller
B. Cassette Feed Roller
C. Separation Roller
D. Multi-purpose Tray
Pick-up Roller
E. Separation Pad
F. Multi-purpose Tray Unit
G. Registration Unit
H. Feed Roller Unit
I. Feed Guide Unit
J. Delivery Unit
IV. EXPOSURE SYSTEM
A. Laser/Scanner Unit
V. ELECTROSTATIC IMAGING/
DEVELOPING/CLEANING
SYSTEM
A. EP-52 Cartridge
B. Transfer Charging Roller
VI. FIXING SYSTEM
A. Fixing Unit
VII. PRINTED CIRCUIT BOARDS
A. Engine Controller PCB
B. Paper Size Detection PCB.. 3-28
C. Video Controller PCB
D. Adapter PCB
VIII.PAPER FEEDER
IX. ENVELOPE FEEDER
X. DUPLEXING UNIT
CHAPTER 4 TROUBLESHOOTING
I. PREFACE
A. Malfunction Diagnosis
Flowchart
B. Initial Check
C. Test Print
II. IMAGE DEFECTS
III. PAPER JAMS
TROUBLESHOOTING
IV PAPER TRANSPORT
TROUBLESHOOTING
V. MALFUNCTION
TROUBLESHOOTING
VI. MALFUNCTION STATUS
TROUBLESHOOTING
VII. MEASUREMENT AND
ADJUSTMENT
A. Mechanical Adjustment
B. Electrical Adjustment
C. Variable Resisters, LEDs,
Test Pins, Jumpers and
Switches on PCBs
VIII.MAINTENANCE AND
SERVICING
A. Periodic Replacement
B. Expected Service Life of
Consumable Parts
C. Periodic Service
D. Cleaning Points for
Servicing
E. Standard Tools
F. Special Tools
G. Printer driver tester
H. Solvents and Oil List
IX. LOCATION OF ELECTRICAL
A. Switches
B. Sensors
C. Clutches/Solenoids
D. Motors/Others
E. PCBs
F. Connectors
APPENDIX
I. GENERAL TIMING CHART
II. GENERAL CIRCUIT DIAGRAM A-3
III. LIST OF SIGNALS
IV. MESSAGE TABLE
IV. PARTS OF THE PRINTER
A. External Views
1. Printer
Figure 1-4-1
Figure 1-4-2
Figure 1-4-3
1: Face-down tray
2: Face-up tray
3: Operation panel
4: Right rear cover
5: Power switch
6: Cassette
7: Multi-purpose tray
8: Top cover
9: Test print switch
10: Parallel interface connector
11: Power receptacle
12: Expansion I/O slots
13: EP-52 cartridge
CHAPTER 1
CATALOG
REVISION 1
DEC. 1999 RY8-3317-010
CONTENTS
-PAPER FEEDER-
ASSEMBLY LOCATION DIAGRAM
INTERNAL COMPONENTS
PAPER PICK-UP DRIVE ASS'Y
CASSETTE
PCB ASS'Y LOCATION DIAGRAM
NUMERICAL INDEX
ASSEMBLY LOCATION DIAGRAM
EXTERNAL COVERS, PANELS, ETC.
TOP COVER ASS'Y
INTERNAL COMPONENTS 1
INTERNAL COMPONENTS 2
INTERNAL COMPONENTS 3
INTERNAL COMPONENTS 4
INTERNAL COMPONENTS 5
ENGINE CONTROLLER PCB ASS'Y
DELIVERY DRIVE ASS'Y
PRINTER DRIVE ASS'Y
PAPER PICK-UP DRIVE ASS'Y
CASSETTE
MULTI-PURPOSE PICK-UP ASS'Y
MULTI-PURPOSE TRAY ASS'Y
PAPER FEED ASS'Y
REGISTRATION ASS'Y
PAPER FEED GUIDE ASS'Y
PAPER DELIVERY ASS'Y
FIXING ASS'Y
PCB ASS'Y LOCATION DIAGRAM
-DUPLEX UNIT-
INTERNAL COMPONENTS 1
INTERNAL COMPONENTS 2
PCB ASS'Y LOCATION DIAGRAM
-ENVELOPE FEEDER-
EXTERNAL COVERS, PANELS, ETC.
INTERNAL COMPONENTS 1
INTERNAL COMPONENTS 2
PCB ASS'Y LOCATION DIAGRAM


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