TM 9-2350-256-20-1
0062 00
CORRECTIVE ACTION Continued
2.
Disconnect APU control box to foot dimmer switch and bulkhead wiring harness from APU control
box. Place red lead of multimeter in socket N of wire 419 and black lead to ground. Turn MASTER
switch on and check for voltage. Turn MASTER switch OFF. If voltage is present, go to step 5. If
voltage is not present, go to step 3.
3.
Reconnect APU control box to foot dimmer switch and bulkhead wiring harness to APU control box.
Remove three screws (1), three lockwashers (2), ground wire (3), and flat washer (4) and release main
switch panel (5) from mounting bracket. Disconnect wire 10-419 from Y-connector of switch panel,
radio, and bilge pump to bulkhead wiring harness at main switch panel. Turn MASTER switch on, and
check for voltage. If voltage is present, repair wire 419 from Y-connector at main switch panel to APU
control box bulkhead wiring harness. If voltage is not present, go to step 4.
0062 00-4
