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TM 5-6675-250-34
Table 2-1. Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
CAUTION
TS 006301
Figure 2-62. Removal of printed circuit board.
CAUTION
To avoid damage to the electrical connectors, alternately back-off each of the two attaching screws when removing the
connectors.
c. Disconnect two electrical connectors (2A2J5 and 2A2J6) by unfastening two screws at each connector.
Remove printed circuit board.
d. Inspect printed circuit board for visual evidence of cracked circuit, corrosion, burns or
other evidence of defects.
Replace a bad printed circuit board.
CAUTION
To avoid damaging the electrical connectors, alternate tightening each of the two screws during reassembly.
(1). Install a good printed circuit board, but do not tighten mounting screws. Connect the two
electrical connectors and secure by tightening two screws. Fasten ten screws that secure printed
circuit board to mounting brackets.
(2). Install electronic control panel assembly in case and secure with eight captive screws.
Step 3. Check for defective MODE SELECT switch (2A2S3).
a. Loosen the eight captive screws and lift the electronic control panel assembly from the case (fig. 2-63).
2-52,

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