CONTAX - Contax G1 Repair Manual
by CONTAXComprehensive technical service manual for the repair and maintenance of the CONTAX G1, a sophisticated compact 35 mm rangefinder camera with external autofocus system and electronically controlled focal plane shutter. This workshop repair manual is organized into three major sections covering everything a service technician needs for professional restoration and maintenance work.
The first section details the camera's design architecture and technical specifications: the CONTAX G mount system, real-image viewfinder with automatic parallax correction, electronically controlled focal plane shutter mechanism, film transport drive system, and exposure control circuit with TTL metering. Included are the circuit block diagram, comprehensive timing charts, and full electrical schematic with detailed IC terminal pin descriptions—essential reference material for understanding power distribution and control sequences.
The second section provides step-by-step disassembly and reassembly procedures: removal of exterior components including back cover, top cover, and control dials; main FPC board extraction; finder unit removal; shutter mechanism procedures; and film advance and rewinding unit disassembly. Practical notes address critical details such as FPC connector handling procedures, proper lubrication points throughout the mechanism, and functional verification checks to confirm correct operation after reassembly.
The third section covers mount base assembly procedures, specialized disassembly instructions for the winding mechanism, shutter charge drive system, film transport system components, and back cover assembly. A comprehensive parts modification list documents all production updates and design revisions applied to various assemblies during manufacturing, helping technicians identify and service cameras from different production runs.
Table of Contents:
- Features
- Specifications
- Description of Mechanisms
- Block Circuit Diagram
- Timing Chart
- Description of Electric Circuit
- Description of Functions of IC Terminals
- Description of Functions of Electric Parts
- Functions of Switches
- Schematic Diagram
- Removal of Exterior Parts
- Removal of Main FPC Assembly
- Removal of Wind Unit Assembly & Mount Base Assembly
- Removal of Shutter Unit
- Removal of Other Parts
- Disassembly of Mount Base Assembly
- Disassembly and Reassembly Procedures for Assembly Parts
- Dressing of Lead Wires
- Disassembly of Data Back Assembly
- Parts Modification List
- Adjustment of Flange Back
- Check and Adjustment of Viewfinder Field of View
- Check and Adjustment of Viewfinder Parallax
- Check and Adjustment of AF Module Parallax
- Adjustments of Compensation Values (Manual Adjustments)
- Dial A/D Adjustment
- Shutter Time Adjustment
- TTL Flash Auto Adjustment
- Light Exposure Adjustments
- AF Adjustment
- Battery Check Adjustment
- Error Code
- Checking of Shots Counter
- Others
- Electric Elements Locating Diagrams
- Test Points on Main FPC Assembly
- Wiring Diagram
Documentation must be downloaded on a computer (PC, Mac, or Linux).
Do not use a smartphone or tablet to download documentation; they generally lack sufficient memory capacity to handle large files, and few users know how to locate the download folder on these devices.
Once downloaded, you can use it right away and even print the pages you need, or use your smartphone in photo mode to translate into the language of your choice: Google Translate
Document Details
- Format
- Pages
- 155
- Size
- 12.9 MB
- Category
- Photography