TM 1–1520–238–T–1
Change 4
4–57
4–8
MUX SYSTEM – INTERACTIVE FD/LS
4–8
CHECK (cont)
TASK
RESULT
NOTE
If this FD/LS check is to be followed by a
MULTIPLEX SYSTEM – OPERATIONAL
CHECK (TM 9-1230-476-20-2), omit step 3.
3. Perform SYSTEMS – POWER DOWN (para 3–2) if
power no longer required.
FD/LS NO–GO
DISPLAY
CORRECTIVE ACTION
TYPE IIIA MRTU
NO–GO CPG
COMPARTMENT
Troubleshoot wiring to isolate
fault (TM 9-1230-476-20-2). If
troubleshooting does not
remove NO–GO, replace
Type IIIA multiplex remote
terminal unit (MRTU)
(TM 9-1230-476-20-1). If
replacement does not
remove NO–GO, replace
FCC.
TYPE IIIA MRTU – RT
BUS NO–GO CPG
COMPARTMENT
(ACZ)
Troubleshoot wiring to isolate
fault (TM 9-1230-476-20-2).
TYPE IIIA MRTU – LT
BUS NO–GO CPG
COMPARTMENT
(ACZ)
Troubleshoot wiring to isolate
fault (TM 9-1230-476-20-2).
TYPE I MRTU NO–GO
LH FAB
Troubleshoot wiring to isolate
fault (TM 9-1230-476-20-2). If
troubleshooting does not
remove NO–GO, replace
Type I MRTU
(TM 9-1230-476-20-1). If
replacement does not
remove NO–GO, replace
FCC (TM 9-1230-476-20-1).
TYPE I MRTU – RT
BUS NO–GO LH FAB
(ACZ)
Troubleshoot wiring to isolate
fault (TM 9-1230-476-20-2).
