TM 1–1520–238–T–3
Change 4
10–7
10–21 SIGNAL NAME:
PLT FCP CONTRAST ADJ
MEMORY LOCATION: 001104
MEMORY DATA BIT(S):
4–19
(SCALAR)
CONDITION:
Monitor HOD while increasing contrast; memory location response should increase
when contrast is increased and decrease when when contrast is decreased.
SIGNAL FUNCTION:
Adjusts contrast.
REMARKS: From pilot FCP through LH FAB MRTU Type I to FCC.
PASS:
If CONDITION has been met, go to paragraph 10–22.
FAIL: Location of fault: pilot FCP, wiring from pilot FCP to LH FAB MRTU Type I, LH FAB MRTU Type
I. Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
10–22 SIGNAL NAME:
GAIN TO PNVS (AAD) PNVS GAIN CMD (ACZ)
MEMORY LOCATION: 001624
MEMORY DATA BIT(S):
4–19
(SCALAR)
CONDITION:
Monitor HOD while increasing gain; memory location response should increase when
gain is increased and decrease when when gain is decreased.
SIGNAL FUNCTION:
Controls gain of FLIR.
REMARKS: From FCC through RH FAB MRTU Type I to TADS/PNVS turret assembly.
PASS:
If CONDITION has been met, go to paragraph 10–23.
FAIL: Location of fault: RH FAB MRTU Type I, wiring from RH FAB MRTU Type I through RH FAB
crossover to TADS/PNVS turret assembly. Troubleshoot wiring to isolate fault
(TM 1–5855–265–T).
10–23 SIGNAL NAME:
LEVEL TO PNVS (AAD) PNVS LEVEL CMD (ACZ)
MEMORY LOCATION: 001625
MEMORY DATA BIT(S):
4–19
(SCALAR)
CONDITION:
Monitor HOD while increasing level; memory location response should increase when
level is increased and decrease when level is decreased.
SIGNAL FUNCTION:
Controls brightness of FLIR.
REMARKS: From FCC through RH FAB MRTU Type I to TADS/PNVS turret assembly.
PASS:
If CONDITION has been met , replace PEU (TM 11–5855–265–20–1).
FAIL: Location of fault: RH FAB MRTU Type I, wiring from RH FAB MRTU Type I through RH FAB
crossover to TADS/PNVS turret assembly. Troubleshoot wiring to isolate fault
(TM 1–5855–265–T).
10–24 SIGNAL NAME:
PLT FCP ACM SW
MEMORY LOCATION: 001117
MEMORY DATA BIT(S):
9
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Selects optimum gain of night vision sensor.
REMARKS: From pilot FCP through LH FAB MRTU Type I to FCC.
PASS:
If fourth digit on HOD is 0, 1, 4, or 5, go to paragraph 10–25.
FAIL: Location of fault: pilot FCP, wiring from pilot FCP to LH FAB MRTU Type I, LH FAB MRTU Type
I. Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
