TM 1–1520–238–T–3
30–2
Change 5
Personnel Required:
(2)
References:
TM 11–1520–238–23–1
TM 11–1520–238–23–2
Equipment Conditions:
Ref
Condition
TM 11–1520–238–23–2
Doppler (ADD)
MAINTENANCE
OPERATIONAL CHECK in
progress
TM 9–1230–476–20–2
MULTIPLEX SUBSYSTEM
– POWER UP completed
NOTE
All multiplex read code responses are read from right to
left.
Multiplex read codes must be used in conjunction with
applicable Maintenance Operational Check (MOC) in
progress.
MULTIPLEX READ CODE INTERPRETATIONS
30–1 SIGNAL NAME:
MESSAGE ERROR
MEMORY LOCATION: 003005
MEMORY DATA BIT(S):
9
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates message error.
REMARKS: From SDCC to FCC.
PASS:
If fourth digit displayed on CDU is 0, go to paragraph 30–2.
FAIL: Location of fault: input correct datum (TM 1–1520–238–10). If fault remains, replace FCC
(TM 9–1230–476–20–2).
30–2 SIGNAL NAME:
SUBSYSTEM FLAG
MEMORY LOCATION: 003005
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates subsystem fault.
REMARKS: From SDCC to FCC.
PASS:
If first digit displayed on CDU is 0 or 1, go to paragraph 30–3.
FAIL: Location of fault: replace SDCC (TM 11–1520–238–23–1).
30–3 SIGNAL NAME:
TERMINAL FLAG
MEMORY LOCATION: 003005
MEMORY DATA BIT(S):
19
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates terminal fault.
REMARKS: From SDCC to FCC.
PASS:
If first digit displayed on CDU is 0, go to paragraph 30–4.
FAIL: Location of fault: replace SDCC (TM 11–1520–238–23–1).
