TM 9-2350-256-20-1
0057 00
CORRECTIVE ACTION Continued
3.
Reconnect batteries to master relay, voltage regulator, and slave receptacle wiring harness to regulator.
Disconnect bulkhead to APU, master relay, and rigger's lights wiring harness from regulator. Place red
lead of multimeter in socket D of wire 61/1 and black lead to ground. Turn MASTER and APU GEN
switches ON, start APU, and check for voltage. Turn APU and MASTER and APU GEN switches
OFF. If voltage is present, go to step 4. If voltage is not present, replace voltage regulator (see WP 0154
00).
4.
Place red lead of multimeter on pin C of wire 478 and black lead to ground. Turn MASTER and APU
GEN switches ON, start APU, and check for voltage. Turn APU and MASTER and APU GEN switches
OFF. If voltage is not present, replace regulator (see WP 0154 00). If voltage is present, go to step 5.
0057 00-4
