Table 2-1. Troubleshooting - Continued
TEST OR INSPECTION
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.
To avoid damage to the electrical connectors, alternately back-off each of the two attaching screws when removing the
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.
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.