TM 1–1520–238–T–3
Change 4
7–13
7–45 SIGNAL NAME:
CPG DAP STATUS
MEMORY LOCATION: 001530
MEMORY DATA BIT(S):
5
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors CPG DAP bit.
REMARKS: From CPG DAP through RH FAB MRTU Type I to FCC.
PASS:
Location of fault if fifth digit on HOD is 4, 5, 6, or 7: wiring between DEU and CPG DAP.
Troubleshoot wiring to isolate fault (TM 9–1270–221–23).
FAIL: Location of fault: CPG DAP, wiring from CPG DAP to RH FAB MRTU Type I, RH FAB MRTU
Type I. Troubleshoot wiring to isolate fault (TM 9–1270–221–23).
7–46 SIGNAL NAME:
CPG RIGHT SSU STATUS (ACY) CPG RT SSU STAT (ACZ)
MEMORY LOCATION: 001571
MEMORY DATA BIT(S):
13
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors CPG right SSU.
REMARKS: From CPG right SSU to SEU through RH FAB MRTU Type I to FCC.
PASS:
Location of fault if third digit on HOD is 0, 2, 4, or 6: IHU, CPG right SSU to CPG left SSU,
CPG left SSU, SEU. Troubleshoot wiring to isolate fault (TM 9–1270–221–23).
FAIL: Location of fault: CPG right SSU, wiring from right SSU to SEU, SEU,wiring from SEU to RH
FAB MRTU Type 1, RH FAB MRTU Type 1. Troubleshoot wiring to isolate fault
(TM 9–1270–221–23).
7–47 SIGNAL NAME:
CPG LEFT SSU STATUS (ACY) CPG LT SSU STAT (ACZ)
MEMORY LOCATION: 001571
MEMORY DATA BIT(S):
14
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors CPG left SSU.
REMARKS: From CPG left SSU to SEU through RH FAB MRTU Type I to FCC.
PASS:
Location of fault if second digit on HOD is 0, 1, 2, or 3: IHU, CPG left SSU to CPG right SSU,
CPG right SSU, SEU. Troubleshoot wiring to isolate fault (TM 9–1270–221–23).
FAIL: Location of fault: CPG right SSU, wiring from right SSU to SEU, SEU,wiring from SEU to RH
FAB MRTU Type 1, RH FAB MRTU Type 1. Troubleshoot wiring to isolate fault
(TM 9–1270–221–23).
7–48 SIGNAL NAME:
CPG IHU STATUS
MEMORY LOCATION: 001571
MEMORY DATA BIT(S):
12
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors CPG integrated helmet unit (IHU).
REMARKS: From CPG IHU to SEU through RH FAB MRTU Type I to FCC.
PASS:
Location of fault if third digit on HOD is 0, 1, 4, or 5: wiring from SEU to CPG IHU.
Troubleshoot wiring to isolate fault (TM 9–1270–221–23).
FAIL: Location of fault: CPG IHU, wiring from CPG IHU to SEU, SEU, wiring from SEU to RH FAB
MRTU Type 1, RH FAB MRTU Type 1. Troubleshoot wiring to isolate fault
(TM 9–1270–221–23).
