TM 1–1520–238–T–3
Change 4
14–51/(14–52 blank)
14–232 SIGNAL NAME:
ORT SYM BRT (ACY) SYM CPG SYM BRT (ACZ)
MEMORY LOCATION: 001172
MEMORY DATA BIT(S):
4–19 (ACY) 4–15 (ACZ)
(SCALAR)
CONDITION:
Monitor HOD while increasing brightness, memory location response should increase
when brightness is increased and decrease when brightness is decreased.
SIGNAL FUNCTION:
Controls ORT signal brightness.
REMARKS: From FCC to symbol generator.
PASS:
If CONDITION is met: go to paragraph 14–233.
FAIL: Location of fault: MRTU Type I, wiring from MRTU Type I to ORT, ORT. Troubleshoot wiring to
isolate fault (TM 9–1230–476–20–2).
14–233 SIGNAL NAME:
CPG COLLECTIVE TADS PNVS SEL 1 (ACY) TADS PNVS SW1 (ACZ)
MEMORY LOCATION: 000414
MEMORY DATA BIT(S):
7
(BINARY)
CONDITION:
If the fifth digit displayed on HOD is 0, 2, 4, or 6 = TADS
If the fifth digit displayed on HOD is 1, 3, 5, or 7 = PNVS
SIGNAL FUNCTION:
Indicates CPG LOS selection.
REMARKS: From CPG collective through CPG MRTU Type III to FCC.
PASS:
If fifth digit displayed on HOD is 0, 2, 4, or 6, go to paragraph 14–234.
FAIL: Location of fault: CPG collective, wiring from CPG collective to CPG MRTU Type III, CPG
MRTU Type III. Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
14–234 SIGNAL NAME:
CPG COLLECTIVE TADS PNVS SEL 2 (ACY) TADS PNVS SW2 (ACZ)
MEMORY LOCATION: 000414
MEMORY DATA BIT(S):
8
(BINARY)
CONDITION:
If the fourth digit displayed on HOD is 0, or 1 = PNVS
If the fourth digit displayed on HOD is 4, or 5 = TADS
SIGNAL FUNCTION:
Indicates CPG LOS selection.
REMARKS: From CPG collective through CPG MRTU Type III to FCC.
PASS:
Location of fault if fourth digit displayed on HOD is 4 or 5: LH FAB MRTU Type I, wiring from
LH FAB MRTU Type I to TPS, TPS, RH FAB MRTU Type I, wiring from RH FAB MRTU Type I
to PEU, PEU. Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
FAIL: Location of fault: CPG collective NVS switch, wiring from CPG collective NVS switch to CPG
MRTU Type III, CPG MRTU Type III. Troubleshoot wiring to isolate fault
(TM 9–1230–476–20–2).
