TM 1–1520–238–T–3
Change 5
28–5/(28–6 blank)
28–17 SIGNAL NAME:
SUBSYSTEM FLAG
MEMORY LOCATION: 002575
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates DTC battery low.
REMARKS: From DTU to FCC.
PASS:
If first digit on CDU is 0, 1, 2, or 3, go to paragraph 28–19.
FAIL: Location of fault: Replace DTC (TM 11–1520–238–23–1).
28–18 SIGNAL NAME:
MESSAGE ERROR
MEMORY LOCATION: 002600
MEMORY DATA BIT(S):
9
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicate a message error.
REMARKS: From FCC to DTU.
PASS:
If fourth digit on CDU is 0, go to paragraph 28–22.
FAIL: Location of fault: Replace DTR (TM 11–1520–238–23–1).
28–19 SIGNAL NAME:
SUBSYSTEM FLAG
MEMORY LOCATION: 002600
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates DTC battery low.
REMARKS: From FCC to DTU.
PASS:
If first digit on CDU is 0, replace DTR TM 11–1520–238–23–1).
FAIL: Location of fault: Replace DTC TM 11–1520–238–23–1).
28–20 SIGNAL NAME:
TERMINAL FLAG
MEMORY LOCATION: 002600
MEMORY DATA BIT(S):
19
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates terminal fault.
REMARKS: From FCC to DTU.
PASS:
If first digit on CDU is 4 or 0, replace DTR TM 11–1520–238–23–1).
FAIL: Location of fault: From DTU circuit breaker to DTR. Troubleshoot wiring to isolate fault
(TM 11–1520–238–23–2).
