TM 1–1520–238–T–3
8–28
Change 4
8–83 SIGNAL NAME:
P1M1 UNLATCH INDICATE
MEMORY LOCATION: 001715
MEMORY DATA BIT(S):
18
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates to operator when a missile is unlatched.
REMARKS: From FCC through left outboard MRTU Type II to launcher.
PASS:
If first digit displayed on HOD is 0, 1, 4, or 5, refer to failure symptom index and next failure
symptom paragraph.
FAIL: Location of fault: left outboard MRTU Type II, FCC. Troubleshoot left outboard MRTU Type II
(TM 9–1230–476–20–2).
8–84 SIGNAL NAME:
P1M1 UPPER LOWER DISPLAY STATUS (ACY) P1M1 PRIORITY IND (ACZ)
MEMORY LOCATION: 001351
MEMORY DATA BIT(S):
16
(BINARY)
CONDITION:
If the second digit displayed on HOD is 0, 2, 4, or 6=UPPER
If the second digit displayed on HOD is 1, 3, 5, or 7=LOWER
SIGNAL FUNCTION:
Indicates to operator when a selected missile has been assigned to upper or
lower channel.
REMARKS: From RHE to FCC for display.
PASS:
If CONDITION corresponds to selected channel, go to paragraph 8–85.
FAIL: Location of fault: replace RHE (TM 9–1427–475–20).
8–85 SIGNAL NAME:
P1M1 TYPE STATUS DISPLAY (ACY) P1M1 TYPE (ACZ)
MEMORY LOCATION: 001351
MEMORY DATA BIT(S):
17–19
(OCTAL)
CONDITION:
If the first digit displayed on HOD is 0=NONE
If the first digit displayed on HOD is 1=TACTICAL LASER
If the first digit displayed on HOD is 4=UNIDENTIFIED
If the first digit displayed on HOD is 5=TRAINING LASER
SIGNAL FUNCTION:
Provides type of missile data for display to operator.
REMARKS: From RHE to FCC for display.
PASS:
If first digit on HOD corresponds to installed type of missiles, go to paragraph 8–86.
FAIL: Location of fault: RHE, wiring from RHE to ECSP, ECSP. Troubleshoot wiring to isolate fault
(TM 9–1427–475–20).
8–86 SIGNAL NAME:
P1M1 TYPE (ACY) P1M1 MSL TYPE (ACZ)
MEMORY LOCATION: 001413
MEMORY DATA BIT(S):
7–8
(BINARY)
CONDITION:
If fifth digit displayed on HOD is 0, and fourth digit displayed on HOD is 0, 1, 2, or
3=TRAINING
If fifth digit displayed on HOD is 1, and fourth digit displayed on HOD is 0, 1, 2, or
3=TACTICAL
If fifth digit displayed on HOD is 1, and fourth digit displayed on HOD is 4, 5, 6, or
7=NONE
SIGNAL FUNCTION:
Indicates a tactical, training or no missile at location.
REMARKS: From ECSP to RHE.
PASS:
If CONDITION corresponds to installed type of missiles, go to paragraph 8–87.
FAIL: Location of fault: RHE, wiring from RHE to ECSP, ECSP. Troubleshoot wiring to isolate fault
(TM 9–1427–475–20).
