TM 1–1520–238–T–3
Change 4
8–25
8–73 SIGNAL NAME:
LAUNCHER POWER COMMAND (ACY) LCHR PWR IND (ACZ)
MEMORY LOCATION: 001440
MEMORY DATA BIT(S):
7
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates presence or absence of power to launcher.
REMARKS: From RHE to FCC.
PASS:
If fifth digit on HOD is 1, 3, 5, or 7, refer to failure symptom index and next failure symptom
paragraph.
FAIL: Location of fault: L INBD LCHR DC circuit breaker, wiring from L INBD LCHR DC circuit
breaker to L OUTBD LCHR DC circuit breaker, L OUTBD LCHR DC circuit breaker,wiring from
L OUTBD LCHR DC circuit breaker to ARM DC circuit breaker, ARM DC circuit breaker, wiring
from ARM DC circuit breaker to ARM PWR ENA Relay K1–5, ARM PWR ENA Relay K1–5,
wiring from ARM PWR ENA Relay K1–5 to remote control circuit breaker (RCCB) CB3, remote
control circuit breaker (RCCB) CB3, wiring from CPG FCP to LCHR DC PWR ENABLE Relay
K2–5/6, LCHR DC PWR ENABLE Relay K2–5/6, wiring from CPG FCP to LCHR AC PWR
ENABLE Relay K3–5/6, LCHR AC PWR ENABLE Relay K3–5/6,wiring from LCHR AC PWR
ENABLE Relay K3–5/6 to ECSP, ECSP. Troubleshoot wiring to isolate fault
(TM 9–1427–475–20).
8–74 SIGNAL NAME:
P1 LAUNCHER PRESENT (ACY) L1 PRESENT (ACZ)
MEMORY LOCATION: 001344
MEMORY DATA BIT(S):
15
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates presence, or absence of launcher.
REMARKS: From RHE to FCC.
PASS:
If second digit on HOD is 2, 3, 6, or 7, go to paragraph 8–75.
FAIL: Location of fault: RHE, wiring from RHE to ECSP, ECSP. Troubleshoot wiring to isolate fault
(TM 9–1427–475–20).
8–75 SIGNAL NAME:
P1 LAUNCHER SAFE (ACY) L1 SAFE (ACZ)
MEMORY LOCATION: 001344
MEMORY DATA BIT(S):
19
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates to operator when a remote safe condition exists at launcher
REMARKS: From RHE to FCC.
PASS:
If first digit on HOD is 0, go to paragraph 8–76.
FAIL: Location of fault: RHE, wiring from RHE to ECSP, ECSP. Troubleshoot wiring to isolate fault
(TM 9–1427–475–20).
