TM 1–1520–238–T–3
26–2
Change 4
MULTIPLEX READ CODE INTERPRETATIONS
26–1 SIGNAL NAME:
PILOT MISSILE INDICATOR (ACY) PILOT MSL LIGHT (ACZ)
MEMORY LOCATION: 001632
MEMORY DATA BIT(S):
15
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors missile system.
REMARKS: From fire control computer (FCC) through right–hand (RH) forward avionics bay (FAB)
multiplex remote terminal unit (MRTU) Type I to pilot caution/warning panel.
PASS:
If second digit displayed on heads out display (HOD) is 2, 3, 6, or 7, go to Chapter 8,
paragraph 8–1.
FAIL: Location of fault: RH FAB MRTU Type I, wiring from RH FAB MRTU Type I to caution/warning
panel, caution/warning panel, FCC. Troubleshoot wiring to isolate fault (TM 1–1520–238–T–6).
26–2 SIGNAL NAME:
PILOT TADS INDICATOR (ACY) PILOT TADS LIGHT (ACZ)
MEMORY LOCATION: 001632
MEMORY DATA BIT(S):
16
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors target acquisition designation sight (TADS) system.
REMARKS: From FCC through RH FAB MRTU Type I to pilot caution/warning panel.
PASS:
If second digit displayed on HOD is 1, 3, 5, or 7, go to Chapter 15, paragraph 15–26.
FAIL: Location of fault: RH FAB MRTU Type I, wiring from RH FAB MRTU Type I to caution/warning
panel, caution/warning panel, FCC. Troubleshoot wiring to isolate fault (TM 1–1520–238–T–6).
26–3 SIGNAL NAME:
PILOT PNVS INDICATOR (ACY) PILOT PNVS LIGHT (ACZ)
MEMORY LOCATION: 001632
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors pilot night vision sensor (PNVS) system.
REMARKS: From FCC through RH FAB MRTU Type I to pilot caution/warning panel.
PASS:
If first digit displayed on HOD is 4, 5, 6, or 7, go to Chapter 10, paragraph 10–1.
FAIL: Location of fault: RH FAB MRTU Type I, wiring from RH FAB MRTU Type I to caution/warning
panel, caution/warning panel, FCC. Troubleshoot wiring to isolate fault (TM 1–1520–238–T–6).
26–4 SIGNAL NAME:
PILOT GUN INDICATOR (ACY) PILOT GUN LIGHT (ACZ)
MEMORY LOCATION: 001632
MEMORY DATA BIT(S):
18
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors gun system.
REMARKS: From FCC through RH FAB MRTU Type I to pilot caution/warning panels.
PASS:
If first digit displayed on HOD is 2, 3, 6, or 7, go to Chapter 5, paragraph 5–3.
FAIL: Location of fault: RH FAB MRTU Type I, wiring from RH FAB MRTU Type I to caution/warning
panel, caution/warning panel, FCC. Troubleshoot wiring to isolate fault (TM 1–1520–238–T–6).
