SECTION V: TROUBLESHOOTING
TM 9-2350-256-20
WARNING
Remove all jewelry such as rings, dog tags,
bracelets, etc. If jewelry contacts a metal
surface a direct short may result in instant
heating of tools, damage to equipment, and
injury or death to personnel.
D Reconnect switch panel to gage panel and miscellaneous
switches wiring harness to switch panel. Install main
switch panel (11), flat washer (10), ground lead (9), three
lockwashers (8), and three screws (7) to mounting
brackets. Open air inlet doors (TM 9-2350-256-10).
Disconnect switch panel, radio, and bilge pump to
bulkhead wiring harness from bulkhead disconnect.
Place red lead of multimeter on pin A of wire 48 and
black lead to ground. Turn MASTER switch on and
check for voltage. Turn MASTER switch OFF. If voltage
is present, repair/replace switch panel, radio, and bilge
pump to bulkhead wiring harness (see paragraph 6-53).
If voltage is not present, troubleshoot master relay (see
paragraph 2-19, master relay fails to operate).
E Place jumper wire from socket N to pin N. Place red lead
of multimeter in socket K of switch panel and black lead
to ground. Turn MASTER switch on and check for
voltage. Turn MASTER switch OFF. If voltage is
present, go to step F. If voltage is not present, go to step
H.
F Reconnect switch panel to gage panel and miscellaneous
switches
wiring
harness
to
main
switch
panel.
Disconnect wire 27 from Y-connector. Place red
multimeter lead on wire 27 and black lead to ground.
Turn MASTER switch on and check for voltage. Turn
MASTER switch OFF. If voltage is present, go to step G.
If voltage is not present, repair/replace wire 27 of switch
panel to gage panel and miscellaneous switches wiring
harness (see paragraph 6-55 for dual voltage; 6-56 for
single voltage.
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