Canon 1140 Manuals

Manuals and User Guides for Canon 1140. We have 1 Canon 1140 manual available for free PDF download: Service Manual

Canon 1140 Service Manual

Canon 1140 Service Manual (965 pages)

COLOR LASER COPIER  
Brand: Canon | Category: Copier | Size: 17.32 MB
Table of contents
Service Information1................................................................................................................................................................
Table Of Contents11................................................................................................................................................................
General Description25................................................................................................................................................................
A. Type28................................................................................................................................................................
B. System28................................................................................................................................................................
C. Functions29................................................................................................................................................................
D. Others31................................................................................................................................................................
E. Default Ratios32................................................................................................................................................................
F. Copying Speed34................................................................................................................................................................
G. Clc Paper Deck-e135................................................................................................................................................................
G. Clc Paper Deck-e35................................................................................................................................................................
Iii. Names Of Parts36................................................................................................................................................................
A. External View36................................................................................................................................................................
B. Cross Section38................................................................................................................................................................
Iv. Using The Copier41................................................................................................................................................................
A. Control Panel41................................................................................................................................................................
B. Extended Functions42................................................................................................................................................................
C. User Mode43................................................................................................................................................................
The User45................................................................................................................................................................
Vi. Safety46................................................................................................................................................................
A. Safety Of Laser Light46................................................................................................................................................................
B. Cdrh Regulations47................................................................................................................................................................
C. Handling The Laser Assembly48................................................................................................................................................................
D. Safety Of Toner50................................................................................................................................................................
Vii. Image Formation51................................................................................................................................................................
B. Auxiliary Process53................................................................................................................................................................
Basic Operation54................................................................................................................................................................
I. Outline Of Operations56................................................................................................................................................................
B. Electrical Circuitry57................................................................................................................................................................
Ii. Basic Sequence Of Operations59................................................................................................................................................................
B. Basic Sequence Of Operations (copying)61................................................................................................................................................................
C. Generating The Image Leading Edge Signal62................................................................................................................................................................
I. Operation104................................................................................................................................................................
Sequence Of Operations105................................................................................................................................................................
Scanner Home Position Sensor And Operation106................................................................................................................................................................
Ii. Scanner Drive System107................................................................................................................................................................
Operations108................................................................................................................................................................
Scanning Lamp109................................................................................................................................................................
B. Operations110................................................................................................................................................................
Iv. Disassembly/assembly111................................................................................................................................................................
A. Original Exposure System112................................................................................................................................................................
Removing The Standard White Plate113................................................................................................................................................................
B. Scanner Drive Assembly114................................................................................................................................................................
I. Outline122................................................................................................................................................................
Ii. Ccd/ccd Drive123................................................................................................................................................................
Iii. Analog Image Processing124................................................................................................................................................................
Iv. Digital Image Processing125................................................................................................................................................................
B. Shading Correction127................................................................................................................................................................
C. 3-line Ccd Position Matching Circuit128................................................................................................................................................................
E. Original Position Detection Circuit129................................................................................................................................................................
Edge/line Width Detection Circuit130................................................................................................................................................................
G. Chromatic Space Correction Circuit131................................................................................................................................................................
I. Logarithmic Correction And Bgr-to-ymc Conversion132................................................................................................................................................................
Laser Exposure System142................................................................................................................................................................
Image Formation System158................................................................................................................................................................
When Controlling The M Developing Bias178................................................................................................................................................................
Transfer Charging Current179................................................................................................................................................................
D. Controlling The Separation Charging Current180................................................................................................................................................................
E. Controlling The External/internal Static Eliminating Current182................................................................................................................................................................
F. Controlling The Post-cleaning Charging Current183................................................................................................................................................................
G. Controlling The Temperature Of The Photosensitive Drum184................................................................................................................................................................
Charging Wire Cleaning Mechanism186................................................................................................................................................................
Iv. Developing Assemblies187................................................................................................................................................................
B. Locking The Developing Assembly188................................................................................................................................................................
C. Controlling The Concentration Of Color Toner190................................................................................................................................................................
Toner On The Developing Cylinder Assembly191................................................................................................................................................................
Of The Photosensitive Drum192................................................................................................................................................................
Sequence Of Measurement193................................................................................................................................................................
D. Controlling The Concentration Of Black Toner194................................................................................................................................................................
Detecting Dirt On The Window197................................................................................................................................................................
Related To Control Of Toner Concentration199................................................................................................................................................................
V. Photosensitive Drum Cleaner Assembly213................................................................................................................................................................
C. Controlling The Collection Of Waste Toner214................................................................................................................................................................
Feedscrew Lock Condition215................................................................................................................................................................
Vi. Disassembly/assembly216................................................................................................................................................................
Construction217................................................................................................................................................................
When Replacing The Photosensitive Drum222................................................................................................................................................................
Cleaning The Photosensitive Drum223................................................................................................................................................................
Removing The Drum Heater224................................................................................................................................................................
Removing The Drum Heater Brush225................................................................................................................................................................
C. Charging Assembly226................................................................................................................................................................
Removing The Post-cleaning228................................................................................................................................................................
Charging Assembly228................................................................................................................................................................
Adjusting The Height Of The228................................................................................................................................................................
Charging Wire228................................................................................................................................................................
D. Developing Assemblies229................................................................................................................................................................
Adjusting The S-b Gap235................................................................................................................................................................
Opening The Hopper240................................................................................................................................................................
Removing The Toner Supply Clutch242................................................................................................................................................................
F. Photosensitive Drum244................................................................................................................................................................
Cleaner Assembly244................................................................................................................................................................
Cleaner Blade245................................................................................................................................................................
G. Pre-cleaning Sensor249................................................................................................................................................................
H. Black Toner Concentration250................................................................................................................................................................
Sensor Assembly250................................................................................................................................................................
I. Cleaner Blade254................................................................................................................................................................
Reciprocating Motor254................................................................................................................................................................
J. Waste Toner Feeding254................................................................................................................................................................
K. Developing Drive257................................................................................................................................................................
A. Pickup From The Cassette268................................................................................................................................................................
B. Lifter Movement272................................................................................................................................................................
Detecting The Level Of Paper273................................................................................................................................................................
Paper Sizes And Cassettes275................................................................................................................................................................
Detecting The Size Of Paper279................................................................................................................................................................
Movement Of The Lifter280................................................................................................................................................................
Separating Paper303................................................................................................................................................................
Chapter 7 Pick-up / Feeding System310................................................................................................................................................................
Separation Roller316................................................................................................................................................................
Fixing System368................................................................................................................................................................
Removing Assembly394................................................................................................................................................................
Iii. Counters418................................................................................................................................................................
Iv. Fans419................................................................................................................................................................
A. Supplying Power422................................................................................................................................................................
Chapter 9 Externals / Auxiliary Mechanisms424................................................................................................................................................................
C. Protection System426................................................................................................................................................................
D. Backup Battery428................................................................................................................................................................
Vi. Editor429................................................................................................................................................................
A. Covers433................................................................................................................................................................
External Covers433................................................................................................................................................................
B. Control Panel437................................................................................................................................................................
C. Editor439................................................................................................................................................................
D. Flywheel441................................................................................................................................................................
F. Drive System Belt Layout443................................................................................................................................................................
G. Drum Motor Assembly443................................................................................................................................................................
H. Main Motor (m4) Drive447................................................................................................................................................................
I. Cpu Pcb448................................................................................................................................................................
J. Hvt Pcb450................................................................................................................................................................
K. Developing Bias Pcb450................................................................................................................................................................
Paper Deck452................................................................................................................................................................
B. Pickup457................................................................................................................................................................
Pickup Operations457................................................................................................................................................................
Chapter 10 Paper Deck458................................................................................................................................................................
C. Detecting Paper In The Deck460................................................................................................................................................................
D. Deck Lifter462................................................................................................................................................................
Lifter Movement462................................................................................................................................................................
Iii. Disassembly/assembly472................................................................................................................................................................
A. External Covers473................................................................................................................................................................
C. Drive System481................................................................................................................................................................
D. Feeding System487................................................................................................................................................................
Orientation Of The Deck Pickup488................................................................................................................................................................
Position Of The Deck Pickup491................................................................................................................................................................
E. Electrical System491................................................................................................................................................................
A. Unpacking499................................................................................................................................................................
C. Supplying Fixing Oil504................................................................................................................................................................
E. Supplying Toner512................................................................................................................................................................
F. Supplying The Starter516................................................................................................................................................................
G. Checking The Images And520................................................................................................................................................................
Paper Size522................................................................................................................................................................
H. Changing The Cassette522................................................................................................................................................................
Setting The Board530................................................................................................................................................................
Checking Operations533................................................................................................................................................................
Maintenance And548................................................................................................................................................................
Chapter 12 Maintenance And Servicing560................................................................................................................................................................
Troubleshooting562................................................................................................................................................................
B. Exposure System579................................................................................................................................................................
C. Image Formation System580................................................................................................................................................................
D. Pickup/feeding System587................................................................................................................................................................
E. Fixing System597................................................................................................................................................................
F. Externals/controls600................................................................................................................................................................
Handling The Flywheel600................................................................................................................................................................
G. Paper Deck601................................................................................................................................................................
H. Electrical System605................................................................................................................................................................
A. Making Initial Checks620................................................................................................................................................................
B. Standard Images622................................................................................................................................................................
The Copy Has A Fixing Fault656................................................................................................................................................................
The Copy Is Blank658................................................................................................................................................................
The Copy Is Solid Black659................................................................................................................................................................
Ac Power Is Absent713................................................................................................................................................................
Dc Power Is Absent714................................................................................................................................................................
The Scanning Lamp Fails To Turn On717................................................................................................................................................................
The Registration Roller Fails To Rotate724................................................................................................................................................................
The Fixing Heater Fails To Turn On728................................................................................................................................................................
The Drum Heater Fails To Operate730................................................................................................................................................................
Pickup Assembly735................................................................................................................................................................
Double Feeding743................................................................................................................................................................
B. Feeding Faults743................................................................................................................................................................
A. Sensors744................................................................................................................................................................
E. Fans753................................................................................................................................................................
Sensors And Switches758................................................................................................................................................................
H. Paper Deck758................................................................................................................................................................
Check Pins By Pcb760................................................................................................................................................................
Cpu Pcb761................................................................................................................................................................
Vii. Service Mode766................................................................................................................................................................
Starting Service Mode And Making Selections767................................................................................................................................................................
C. I/o (i/o Display Mode)802................................................................................................................................................................
F. Option (settings Mode)894................................................................................................................................................................
G. Pg (test Print)910................................................................................................................................................................
Viii. Self Diagnosis918................................................................................................................................................................
B. Rdf941................................................................................................................................................................
C. Sorter942................................................................................................................................................................
Recycled Paper965................................................................................................................................................................

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