Olympus OM-1 Repair Manual page 134

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2) Poor soldering
Check 9057 (Plate)., various resisters, and lead wires for poor soldering
or short-circuit, and make necessary repairs or adjustments.
3) Position of resisters
Check the following points and make necessary repairs or adjustments:
o Is the resister soldered onto the printed board as tightly as possible?
o Isn't the register in contact with 9108?
o Is the printed board fixed closer toward the surface of the rails on
the camera body?
4) CdS wire disconnected
In case when the value indicated is extremely in minus either in high or low
luminosity, check for disconnection of the CdS wire as follows:
o Conductivity of the red CdS lead wire (for both high and low
luminosities),
o the black CdS lead wire (for high luminosity), and
o the green CdS lead wire (for low luminosity).
5) Disconnection of wire in the mechanical part (no needle swing)
Remove the lead wire by unsoldering and check the conductivity of the
mechanical part.
If disconnection is found, replace the whole meter assembly.
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