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.
J Place red lead of multimeter in socket G of wire 62 and
black lead to ground. Turn MASTER and APU GEN
switches ON and check for voltage. Turn MASTER and
APU GEN switches OFF. If voltage is present, go to
step K. If voltage is not present, repair/replace wire 62
of bulkhead to APU, master relay, and rigger's lights
wiring harness (see paragraph 6-76).
K Reconnect bulkhead to APU, master relay, and rigger's
lights wiring harness to APU engine disconnect.
Disconnect APU control box to foot dimmer switch and
bulkhead wiring harness from APU control box. Place
red lead of multimeter in socket H of wire C and black
lead to ground. Turn MASTER and APU GEN switches
ON and check for voltage. Turn MASTER and APU
GEN switches OFF. If voltage is present, go to step L.
If voltage is not present, go to step Q.
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