TM 1–1520–238–T–3
8–274
Change 4
8–1040 SIGNAL NAME:
P4M4 MSL AUTO PILOT POWER CONTROL (ACY)
P4M4 AUTOPLT PWR (ACZ)
MEMORY LOCATION: 001302
MEMORY DATA BIT(S):
9
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Controls application of auto pilot power to missile.
REMARKS: From RHE to ECSP.
PASS:
If fourth digit on HOD is 2, 3, 6, or 7, go to paragraph 8–1041.
FAIL: Location of fault: RHE, wiring from RHE to ECSP, ECSP. Troubleshoot wiring to isolate fault
(TM 9–1427–475–20).
8–1041 SIGNAL NAME:
P4M4 MSL AUTO PILOT POWER CONTROL (ACY)
P4M4 AUTOPLT PWR (ACZ)
MEMORY LOCATION: 002064
MEMORY DATA BIT(S):
9
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Controls application of auto pilot power to missile.
REMARKS: From launcher through right outboard MRTU Type II to FCC.
PASS:
If fourth digit on HOD is 2, 3, 6, or 7, go to paragraph 8–1042.
FAIL: Location of fault: right outboard launcher, wiring from right outboard launcher to right outboard
MRTU Type II, right outboard MRTU Type II. Troubleshoot wiring to isolate fault
(TM 9–1427–475–20).
8–1042 SIGNAL NAME:
P4M4 MSL AUTO PILOT POWER (ACY) P4M4 A/P PWR OK (ACZ)
MEMORY LOCATION: 001427
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Specifies auto pilot power is above minimum value (+18 VDC).
REMARKS: From ECSP to RHE.
PASS:
If first digit on HOD is 4, 5, 6, or 7, go to paragraph 8–1043.
FAIL: Location of fault: replace right outboard launcher (TM 9–1425–475–30–2).
8–1043 SIGNAL NAME:
P4M4 MSL AUTO PILOT POWER (ACY) P4M4 A/P PWR OK (ACZ)
MEMORY LOCATION: 002064
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Specifies auto pilot power is above minimum value (+18 VDC).
REMARKS: From launcher through right outboard MRTU Type II to FCC.
PASS:
If first digit on HOD is 4, 5, 6, or 7, refer to failure symptom index and next failure symptom
paragraph.
FAIL: Location of fault: right outboard launcher, wiring from right outboard launcher to right outboard
MRTU Type II, right outboard MRTU Type II. Troubleshoot wiring to isolate fault
(TM 9–1427–475–20).
