TM 9-2350-256-20-1
0056 00
CORRECTIVE ACTION
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.
1.
Open air inlet doors (TM 9-2350-256-10). Disconnect batteries to master relay voltage regulator
and slave receptacle wiring harness from APU regulator. Place red lead of multimeter on pin A 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 not present, troubleshoot battery circuit. If
voltage is present, go to step 2.
2.
Place red lead of multimeter in socket A of wire 62 and black lead to ground. Turn MASTER and APU
GEN switches ON, start APU, and check for voltage. Turn MASTER and APU GEN switches OFF. If
voltage is present, go to step 3. If voltage is not present, replace APU voltage regulator (see WP 0154
00).
0056 00-3
