TM 1–1520–238–T–3
29–2
Change 5
29–3 SIGNAL NAME:
SUBSYSTEM FLAG
MEMORY LOCATION: 002254
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates subsystem fault.
REMARKS: From CDU to FCC.
PASS:
If first digit displayed on CDU is 0 or 1, go to paragraph 29–4.
FAIL: Location of fault: replace CDU (TM 11–1520–238–23–1).
29–4 SIGNAL NAME:
TERMINAL FLAG
MEMORY LOCATION: 002254
MEMORY DATA BIT(S):
19
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates terminal fault.
REMARKS: From CDU to FCC.
PASS:
If first digit displayed on CDU is 0, go to paragraph 29–5.
FAIL: Location of fault: replace CDU (TM 11–1520–238–23–1).
29–5 SIGNAL NAME:
MESSAGE ERROR
MEMORY LOCATION: 002347
MEMORY DATA BIT(S):
9
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates message error.
REMARKS: From FCC to CDU.
PASS:
If fourth digit displayed on CDU is 0, 1, 4, or 5, go to paragraph 29–6.
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–2).
29–6 SIGNAL NAME:
RESERVED
MEMORY LOCATION: 002347
MEMORY DATA BIT(S):
12-14
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates serial digital error.
REMARKS: From FCC to CDU.
PASS:
If second and third digits displayed on CDU are 0, go to paragraph 29–7.
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–2).
29–7 SIGNAL NAME:
SUBSYSTEM FLAG
MEMORY LOCATION: 002347
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates subsystem fault.
REMARKS: From FCC to CDU.
PASS:
If first digit displayed on CDU is 0 or 1, go to paragraph 29–8.
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–2).
29–8 SIGNAL NAME:
TERMINAL FLAG
MEMORY LOCATION: 002347
MEMORY DATA BIT(S):
19
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates terminal fault.
REMARKS: From FCC to CDU.
PASS:
Location of fault: replace CDU (TM 11–1520–238–23–1).
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–2).
