Manual for 137 MA QUARTZ

Manual for 137 MA QUARTZ

Brand: CONTAX

Category: Camera

Document Type:

Language: EN

Uploaded: Aug. 9, 2025, 11:33 p.m.

Basic Operation Summary

This manual outlines the repair procedures for the CONTAX 137 MA QUARTZ camera. It covers the disassembly and reassembly of various camera components, including exterior parts, mirror box, shutter mechanism, winding mechanism, and internal circuits. Specific sections detail procedures for shutter curtain replacement and adjustment, finder display and focus adjustment, and exposure/flash output adjustment. Troubleshooting guidance for common malfunctions and causes is also provided, covering issues related to shutter operation, LED indicators, exposure settings, flash photography, self-timer, and voltage adjustments.

Troubleshooting and error codes

Malfunction Possible Causes
Shutter does not operate and Main Lamp (Red) does not flicker
  • Bad soldering of Xtal, defective of Xtal.
  • Bad soldering of C15 and C16, defective of C15 and C16.
  • Bad soldering of IC-2 terminal #37, #38, #46, #48.
  • Short Circuit between IC-2 terminal #46 and #47.
  • Bad soldering of IC-4 terminal #11, #18,#17.
  • Trigger Switch is kept "ON" shrot circuit of soldering point of Trigger Switch.
  • Defective of IC-2.
  • Bad soldering of soldering point of FPC-1 and S.Base.
Shutter does not operate and Main Lamp flickers when Main Switch is turned ON.
  • Bad soldering between Transfer Switch of earth and FPC-1.
  • Defective of Transfer Switch (068441)
  • Bad soldering of IC-5 terminal #12
  • Defective of IC-4
  • Defective of IC-5
Shutter does not operate and Main Lamp flickers, Main Switch is turned ON when press the Shutter Release Button.
  • Bad soldering of IC-2 terminal #56.
  • Bad soldering of White, Purple lead wire (from Motor).
  • Short circuit between White lead wire (from Motor) and Camera Body.
  • Bad soldering of Tr4, defective of Tr4.
  • Bad soldering of IC-5 terminal #5, #7.
  • Bad soldering of IC-4 terminal #2, #3.
  • Defective of IC-4.
  • Defective of IC-5.
Shutter does not operate, the Mirror remains flipped up (or has stopped part way) and Main Lamp flickers.
  • Insufficient friction of M. Friction Gear Assy (068727)
  • Defective of Transfer Switch (068441)
  • The tension of SW Lever (L) Spring (137435) is getting weak, therefore, Transfer Switch does not work properly.
Shutter does not operate, the Mirror has stopped part way and Main Lamp flickers.
  • MU Lever (S) Spring (137780) has slipped out of the position.
  • Short circuit between IC-4 terminal #1 and #2.
  • Defective of IC-5.
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