TM 1–1520–238–T–3
7–14
Change 4
7–49 SIGNAL NAME:
BRT TO CPG DAP (ACY) CPG IHAD BRT CMD (ACZ)
MEMORY LOCATION: 001610
MEMORY DATA BIT(S):
4–19 (ACY) 4–15 (ACZ)
(SCALAR)
CONDITION:
Monitor brightness signal level to CPG display adjust panel (DAP) as brightness is
adjusted from minimum (–) to maximum (+).
SIGNAL FUNCTION:
Controls CPG IHADSS brightness.
REMARKS: From FCC through RH FAB MRTU Type I to CPG DAP.
PASS:
Location of fault if condition is met: 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).
FAIL: Location of fault: RH FAB MRTU Type I, wiring from RH FAB MRTU Type I to CPG DAP, CPG
DAP. Troubleshoot wiring to isolate fault (TM 9–1270–221–23).
7–50 SIGNAL NAME:
CONTRAST TO CPG DAP (ACY) CPG IHAD CTRS CMD (ACZ)
MEMORY LOCATION: 001611
MEMORY DATA BIT(S):
4–19 (ACY) 4–15 (ACZ)
(SCALAR)
CONDITION:
Monitor ORT IHAD display contrast signal level to CPG DAP as contrast is adjusted
from minimum (–) to maximum (+).
SIGNAL FUNCTION:
Controls CPG IHADSS contrast.
REMARKS: From FCC through RH FAB MRTU Type I to CPG DAP.
PASS:
Location of fault if condition is met: 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).
FAIL: Location of fault: RH FAB MRTU Type I, wiring from RH FAB MRTU Type I to CPG DAP, CPG
DAP. Troubleshoot wiring to isolate fault (TM 9–1270–221–23).
7–51 SIGNAL NAME:
CPG BRSIT HMD SW
MEMORY LOCATION: 000414
MEMORY DATA BIT(S):
10
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors CPG boresight helmet display (BRSIT HMD) switch.
REMARKS: From CPG collective through CPG MRTU Type III to FCC.
PASS:
If fourth digit on HOD is 0, 2, 4, or 6, go to paragraph 7–52.
FAIL: Location of fault: CPG BRSIT HMD switch, CPG collective,wiring from CPG collective to CPG
MRTU Type III, CPG MRTU Type III. Troubleshoot wiring to isolate fault (TM 9–1270–221–23).
7–52 SIGNAL NAME:
IHADSS BRSIT SW (ACY) CPG IHAD BST SW (ACZ)
MEMORY LOCATION: 000441
MEMORY DATA BIT(S):
7
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors CPG IHADSS BRSIT switch.
REMARKS: From CPG FCP through CPG MRTU Type III to FCC.
PASS:
If fifth digit on HOD is 0, 2, 4, or 6, go to paragraph 7–53.
FAIL: Location of fault: CPG FCP, wiring from CPG FCP to CPG MRTU Type III, CPG MRTU Type III,
wiring from CPG FCP to pilot FCP, pilot FCP. Troubleshoot wiring to isolate fault
(TM 9–1270–221–23).
