TM 1–1520–238–T–3
19–2
19–2 SIGNAL NAME:
GEN 1 CONT STATUS
MEMORY LOCATION: 001532
MEMORY DATA BIT(S):
15
(BINARY)
CONDITION:
Valid only during generator test.
SIGNAL FUNCTION:
Monitors generator control unit (GCU) switching logic.
REMARKS: From generator control unit 1 through power distribution box to RH FAB MRTU Type I.
PASS:
Location of fault if second digit displayed on HOD is 2, 3, 6, or 7: wiring from GEN 1 switch to
generator control unit 1. Troubleshoot wiring to isolate fault (TM 1–1520–238–T–6).
FAIL: Location of fault: GCU 1, wiring from GCU to RH FAB MRTU Type I, RH FAB MRTU Type I.
Troubleshoot wiring to isolate fault (TM 1–1520–238–T–6).
19–3 SIGNAL NAME:
GEN 2 STATUS
MEMORY LOCATION: 001532
MEMORY DATA BIT(S):
18
(BINARY)
CONDITION:
Valid only during generator test.
SIGNAL FUNCTION:
Monitors field excitation.
REMARKS: From generator 2 through power distribution box to RH FAB MRTU Type I.
PASS:
If first digit displayed on HOD is 2, 3, 6, or 7, go to paragraph 19–4.
FAIL: Location of fault: generator 2, wiring from generator to RH FAB MRTU Type I, RH FAB MRTU
Type I. Troubleshoot wiring to isolate fault (TM 1–1520–238–T–6).
19–4 SIGNAL NAME:
GEN 2 CONT STATUS
MEMORY LOCATION: 001532
MEMORY DATA BIT(S):
16
(BINARY)
CONDITION:
Valid only during generator test.
SIGNAL FUNCTION:
Monitors GCU switching logic.
REMARKS: From generator control unit 2 through power distribution box to RH FAB MRTU Type I.
PASS:
Location of fault if second digit displayed on HOD is 2, 3, 6, or 7: wiring from GEN 2 switch to
generator control unit 2. Troubleshoot wiring to isolate fault (TM 1–1520–238–T–6).
FAIL: Location of fault: GCU 2, wiring from GCU to RH FAB MRTU Type I, RH FAB MRTU Type I.
Troubleshoot wiring to isolate fault (TM 1–1520–238–T–6).
