Canon A-1 - Repair Guide Manual

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Canon

A-l

Repair

Guide

Main Page

Introduction2
Features2
Five Difference Automatic Exposure Modes2
The Employment of Total Digital System to Process with Speed and Accuracy All Incoming Information2
Full Information Character Display Viewfinder3
Expanded Range and Versitility3
Essential Controls and Displays Grouped for Easy Reach and Rapid Operations3
Human Engineering, Miscellaneous3
Specifications4
Type4
Interchangeable Lenses4
Viewfinder4
AE Function5
Power Source9
Shutter Mechanism10
Self-Timer10
Loading the Film12
Multiple Exposures13
Camera Body13
Dimensions and Weight14
Related Accessories14
Main Features15
Finder15
Viewfinder Optics15
Field of Vision for the Viewfinder16
Viewfinder Information (Character Display Viewfinder)16
Display Indication in 1/2 Step Increments19
Numerals and Characters to be Displayed20
Change in the Brightness of the Subject and Display21
Summary22
LED Illumination25
Camera Controls28
Canon Functional Block Diagram30
Block Diagram of Computer Integrated into Control System31
Comparison between the Isolated I2L and Pure I2L34
Electronic Circuit Characteristics35
Block Diagram for Dual Ramp Analog to Digital Converter35
Timing Chart for the Dual Ramp AD Converter36
Filming Chart of Lighting42
Static and Dynamic Display System44
PLA of the A-147
Bus Line of 8-Bit Signals49
Bus Line50
Physical Properties and Layout of Electrical Components52
Block Diagram of Circuit Boards54
Layout of Circuit Boards55
Diode Array Diagram57
Segmented Aperture Value Electrode Plate59
Mini Connector61
Mini Connector (Cross Section)61
Mechanisms62
MD Coupler63
Multiple Exposure Mechanism65
Operational Flow Chart67
Operational Flow Chart Details68
A-1 Flow Chart72
Technical Comments74
Quality Criteria74
Repair Quality Assurance75
Special Precautions76
Switch Table78
Exposure Timing Chart80
TV Code82
AV Code83
AVO, AVC Codes84
SV Code85
Cntl86
Disassembly87
AT Dial87
Winding Lever87
Shutter Button87
Top Cover88
Base Cover88
Front Panel Unit89
Connectors90
Reassembly and Adjustment90
Spool Torque91
Shutter Unit Installation Adjustment91
2Nd Curtain Latch Charge Torque92
2Nd Curtain Latch Lever Release Torque92
2Nd Curtain Latch Set Position92
Shutter Speed Adjustment93
X Sync Timelag94
X Contact - Safety Contact Timing94
Flash (X) Synchronization95
Mirror Bounce Brevention Lever96
Flush Pattern Position Adjustment97
AVO Brush Stopper Position (F/S.6 Maximum Aperture Position)98
Maximum Aperture Signal Pin Adjustment (Front Panel Only)98
Maximum Aperture Singal Pin Adjustment (Assembled Camera99
Maximum Aperture Signal Pin Code99
AV Brush Position (AE Charge (AECG) Position)99
Compound Gears Installation101
Preliminary Perforation Position102
Winding Shaft Installation103
Charge Gear Installation104
Perforation Adjustment (Final)105
SW5-SW5' Adjustment105
A/T Dial Base Assembly106
Multiple Exposure (ME) Lever Adjustment107
Eyepiece Shutter Adjustment108
SPC Output Adjustment108
ASA Brush Adjustment110
Diaphragm Accuracy Check110
Viewfinder Display Adjustment111
Focusing Screen Replacement111
Pentaprism112
Viewfinder Mask Installation113
Body Parts Lubrication114
Sprocket Mechanism114
Spool Mechanism114
Wind / Rewind Mechanism114
Miscelleanous116
Shutter Unit Lubrication117
Front Panel Unit Lubrication Chart118
Circuit Operation (Signals and Waveforms)119
Opt IC (Sn28724)120
NPUT IC (Sn2872L)120
Cpu IC (Sn28720)128
Ctst (2P)129
Decoder Drive IC (SN28723)146
Sample Waveforms148
Integrated Circuit Replacement and Adjustment149
OPT IC Adjustment150
OSC INTERFACE IC Adjustment151
INPUT IC Adjustment (A/D NULL Adjustment)153
Decoder Driver IC Adjustment154
Service Tools List155
Parts List158
Wiring Diagram172

Canon A-1 - Repair Guide Manual

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