TM 1–1520–238–T–3
Change 4
15–55/(15–56 blank)
15–238 SIGNAL NAME:
FAIL HIS (ACY)
MEMORY LOCATION: 000220
MEMORY DATA BIT(S):
4–19
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
FCC self–test failure flag (history 1).
REMARKS: Internal FCC self–test.
PASS:
If all digits on HOD are zero, go to paragraph 15–239.
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1).
15–239 SIGNAL NAME:
FAIL HIS 2 (ACY)
MEMORY LOCATION: 000221
MEMORY DATA BIT(S):
4–19
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
FCC self–test failure flag (history 2).
REMARKS: Internal FCC self–test.
PASS:
If all digits on HOD are zero, refer to TM 1–1270–476–20.
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1).
15–240 SIGNAL NAME:
FAIL HIS (ACZ)
MEMORY LOCATION: 000223
MEMORY DATA BIT(S):
4–19
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
FCC self–test failure flag (history 1).
REMARKS: Internal FCC self–test.
PASS:
If all digits on HOD are zero, go to paragraph 15–241.
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1).
15–241 SIGNAL NAME:
FAIL HIS 2 (ACZ)
MEMORY LOCATION: 000224
MEMORY DATA BIT(S):
4–19
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
FCC self–test failure flag (history 2).
REMARKS: Internal FCC self–test.
PASS:
If all digits on HOD are zero, refer to TM 1–1270–476–20.
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1).
