TM 1–1520–238–T–3
15–10
15–29 SIGNAL NAME:
STATUS WORD
MEMORY LOCATION: 001157
MEMORY DATA BIT(S):
10
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors TADS.
REMARKS: From TADS to LH FAB MRTU Type I.
PASS:
If fourth digit on HOD is 0, 2, 4, or 6, go to paragraph 15–30.
FAIL: Location of fault: go to paragraph 15–32.
15–30 SIGNAL NAME:
STATUS WORD
MEMORY LOCATION: 000620
MEMORY DATA BIT(S):
10
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors lines 1 and 2 of alphanumeric display (AND).
REMARKS: From AND to CPG MRTU Type III.
PASS:
If fourth digit on HOD is 0, 2, 4, or 6, go to paragraph 15–64.
FAIL: Location of fault: replace AND (TM 1–1270–476–20).
15–31 SIGNAL NAME:
STATUS WORD
MEMORY LOCATION: 000652
MEMORY DATA BIT(S):
10
(BINARY)
SIGNAL FUNCTION:
Monitors lines 3 and 4 of AND.
REMARKS: From AND to CPG MRTU Type III.
PASS:
If fourth digit on HOD is 0, 2, 4, or 6, go to paragraph 15–88.
FAIL: Location of fault: replace AND (TM 1–1270–476–20).
15–32 SIGNAL NAME:
ECS SYSTEM STATUS
MEMORY LOCATION: 001136
MEMORY DATA BIT(S):
5
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors TADS environmental control system (ECS) assembly.
REMARKS: From TEU through LH FAB MRTU Type I to FCC.
PASS:
If fifth digit on HOD is 4, 5, 6, or 7, go to paragraph 15–33.
FAIL: Location of fault: TADS ECS, ECS, ECS assembly vacuum hose, wiring from ECS to aircraft
interface adapter (AIA) interface. Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–33 SIGNAL NAME:
TEU HANDSHAKE
MEMORY LOCATION: 001141
MEMORY DATA BIT(S):
4
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors serial input line.
REMARKS: From TEU through LH FAB MRTU Type I to FCC.
PASS:
If sixth digit on HOD is 0, go to paragraph 15–34.
FAIL: Location of fault: replace TEU (TM 1–1270–476–20).
