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.
A
Open air inlet doors (TM 9-2350-256-10). Disconnect
batteries to master relay, voltage regulator, slave
receptacle, and engine disconnect wiring harness
from engine regulator. Place red lead of multimeter
on pin A of wire 2/62 and black lead to ground. Turn
MASTER switch on and check for voltage. Turn
MASTER switch OFF. If voltage is present, go to step
B. If voltage is not present, troubleshoot battery
circuit.
B
Reconnect
batteries
to
master
relay,
voltage
regulator, slave receptacle, and engine disconnect
wiring harness to engine regulator. Disconnect APU
and engine armature relays to voltage regulator wiring
harness from engine regulator. Place red lead of
multimeter on pin D of wire 1/61 and black lead to
ground. Turn MASTER switch on, start engine and
close generator output switch and check for voltage.
Turn engine and MASTER switch OFF, and open
generator output switch. If voltage is present, go to
step I. If voltage is not present, go to step C.
C
Place red lead of multimeter on pin A of wire 2/62 and
black lead to ground. Turn MASTER switch on, start
engine, open generator cutout switch and check for
voltage. Turn engine and MASTER switch OFF, and
close generator cutout switch. If voltage is not
present, replace engine regulator (see paragraph 6-6).
If voltage is present, go to step D.
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