TM 1–1520–238–T–3
8–270
Change 4
8–1027 SIGNAL NAME:
P4M4 BIT PERFORMED
MEMORY LOCATION: 001350
MEMORY DATA BIT(S):
4
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates to FCC that BIT has been performed.
REMARKS: From RHE to FCC.
PASS:
If sixth digit on HOD is 1, 3, 5, or 7, go to paragraph 8–1028.
FAIL: Location of fault: replace RHE (TM 9–1427–475–20).
8–1028 SIGNAL NAME:
P4M4 BIT STATUS (ACY) P4M4 DISPLAY STATUS (ACZ)
MEMORY LOCATION: 001360
MEMORY DATA BIT(S):
4–7
(HEX)
CONDITION:
If sixth digit displayed on HOD is 0 and fifth digit displayed
on HOD is 0=NO MSL
If sixth digit displayed on HOD is 0 and fifth digit displayed
on HOD is 1=SELECTED
If sixth digit displayed on HOD is 0 and fifth digit displayed
on HOD is 2=READY
If sixth digit displayed on HOD is 0 and fifth digit displayed
on HOD is 3=TRACKING
If sixth digit displayed on HOD is 0 and fifth digit displayed
on HOD is 4=BIT NO GO
If sixth digit displayed on HOD is 0 and fifth digit displayed
on HOD is 5=FAILED
If sixth digit displayed on HOD is 0 and fifth digit displayed
on HOD is 7=BATTERY NO GO
If sixth digit displayed on HOD is 1 and fifth digit displayed
on HOD is 0=UNLATCHED
If sixth digit displayed on HOD is 1 and fifth digit displayed
on HOD is 1=MRTU NO GO
If sixth digit displayed on HOD is 1 and fifth digit displayed
on HOD is 4=CODED
If sixth digit displayed on HOD is 1 and fifth digit displayed
on HOD is 7=CAGED
SIGNAL FUNCTION:
Provides missile status display for operator.
REMARKS: From RHE to FCC for display.
PASS:
If CONDITION corresponds to selected message, go to failure symptom index and next failure
symptom paragraph.
FAIL: Location of fault: RHE, wiring from RHE to right outboard launcher, right outboard launcher.
Troubleshoot wiring to isolate fault (TM 9–1427–475–20).
8–1029 SIGNAL NAME:
P4M4 UNLATCH INDICATE
MEMORY LOCATION: 001433
MEMORY DATA BIT(S):
15
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates to RHE missile is unlatched.
REMARKS: From launcher to RHE.
PASS:
If second digit displayed on HOD is 0, 1, 4, or 5, go to paragraph 8–1030.
FAIL: Location of fault: right outboard launcher, wiring from right outboard launcher to RHE, RHE.
Troubleshoot wiring to isolate fault (TM 9–1427–475–20).
