Figure 2-70. Removal of printed circuit board.

TM 5-6675-250-34

Table 2-1. Troubleshooting - Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

TS 006309

Figure 2-70. Removal of printed circuit board.

b. Unfasten ten screws securing the printed circuit board to the mounting brackets and loosen the board to obtain

access to electrical connectors.

CAUTION

To avoid damage to the electrical connectors, alternately back-off each of the two attaching screws when removing the

connector.

c. Disconnect two electrical connectors (2A2J5 and 2A2J6) by unfastening two ecrews at each connector.

Remove printed circuit board.

d. Inspect printed circuit board for visual evidence of cracked circuits, 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 unassembly.

(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 2. Deleted.

2-58