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 (965 pages)

COLOR LASER COPIER

Brand: Canon | Category: Copier | Size: 17.32 MB

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................................................................................................................................................................