Teletype 43K001/AAA, Repair Manual

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MANUAL 525, 2-11
QUESTION YES NO
8. Does keyswitch in question meet
Go to 9. Replace defective key-
the mechanical requirements switch.
(depress and release properly,
latch, click, etc.)?
9.
Is trouble present but not defined? Undefined trouble - Review initial indication
refer to circuit descrip- of trouble.
tion and diagrams, etc .
Note:
The 410101 circuit card is susceptible to contamination when disassembled. The keyswitch
contact areas of the circuit card should be wiped with a dry cheesecloth prior to reassembly. Any
contamination can cause a keyboard failure.