TM 1–1520–238–T–3
8–300
Change 4
8–1143 SIGNAL NAME:
MSL LOWER CHANNEL QUANTITY SW (ACY) LWR CHAN QTY CMD (ACZ)
MEMORY LOCATION: 001441
MEMORY DATA BIT(S):
13–15
(BINARY)
CONDITION:
If second digit displayed on HOD 0=0
If second digit displayed on HOD 1=1
If second digit displayed on HOD 2=2
If second digit displayed on HOD 3=3
SIGNAL FUNCTION:
Indicates missile lower quantity selected in the lower pushbutton index switch.
REMARKS: From CPG FCP to RHE.
PASS:
If CONDITION corresponds to selected quantity, go to paragraph 8–1144.
FAIL: Location of fault: CPG FCP, wiring from CPG FCP to RHE, RHE. Troubleshoot wiring to isolate
fault (TM 9–1427–475–20).
8–1144 SIGNAL NAME:
MSL LOWER CHANNEL QUANTITY SW
MEMORY LOCATION: 001075
MEMORY DATA BIT(S):
4–5
(BINARY)
CONDITION:
If the sixth digit displayed on HOD is 0 and the fifth digit is 0, 1, 2, or 3=3
If the sixth digit displayed on HOD is 0 and the fifth digit is 4, 5, 6, or 7=2
If the sixth digit displayed on HOD is 1 and the fifth digit is 0, 1, 2, or 3=1
If the sixth digit displayed on HOD is 1 and the fifth digit is 4, 5, 6, or 7=0
SIGNAL FUNCTION:
Indicates missile lower quantity selected.
REMARKS: From CPG FCP through LH FAB MRTU TYPE I to RHE.
PASS:
If CONDITION corresponds to selected quantity, go to paragraph 8–1145.
FAIL: Location of fault: CPG FCP, wiring from CPG FCP to LH FAB MRTU Type I, LH FAB MRTU
Type I. Troubleshoot wiring to isolate fault (TM 9–1427–475–20).
8–1145 SIGNAL NAME:
MSL UPPER CHANNEL CODE
MEMORY LOCATION: 001343
MEMORY DATA BIT(S):
9–11
(OCTAL)
CONDITION:
If the fourth digit displayed on HOD is 4 or 0 and the
third digit is 0, 1, 2, or 3=H
If the fourth digit displayed on HOD is 4 or 0 and the
third digit is 4, 5, 6, or 7=G
If the fourth digit displayed on HOD is 5 or 1 and the
third digit is 0, 1, 2, or 3=F
If the fourth digit displayed on HOD is 5 or 1 and the
third digit is 4, 5, 6 or 7=E
If the fourth digit displayed on HOD is 6, or 2 and the
third digit is 0, 1, 2, or 3=D
If the fourth digit displayed on HOD is 6 or 2 and the
third digit is 4, 5, 6, or 7=C
If the fourth digit displayed on HOD is 7 or 3 and the
third digit is 0, 1, 2, or 3=B
If the fourth digit displayed on HOD is 7 or 3 and the
third digit is 4, 5, 6, or 7=A
SIGNAL FUNCTION:
From RHE to FCC.
REMARKS: If CONDITION corresponds to selected upper channel code, go to paragraph 8–1146.
PASS:
Location of fault: replace RHE (TM 9–1427–475–20).
