TM 1–1520–238–T–1
4–56
Change 5
4–8
MUX SYSTEM – INTERACTIVE FD/LS
4–8
CHECK (cont)
TASK
RESULT
NOTE
RHE – RT BUS NO–GO RH FAB (ACZ) and/or
RHE – LT BUS NO–GO RH FAB (ACZ) will
appear if both pilot and CPG SAFE/ARM
switches are off.
d. On DEK, press and
release ()/0 and
VWX/8 keys (ADC).
On CDU, press and
When MUX
COMMUNICATION GO
appears on the HOD, go to
next step.
release 0 and 8 keys
(ADD).
If one or more FD/LS
NO–GO displays listed below
appear on the HOD, perform
the following in sequence:
(1) Perform SYSTEMS –
POWER DOWN
(para 3–2).
(2) Perform CORRECTIVE
ACTION indicated for first
NO–GO displayed on
HOD.
(3) Perform SYSTEMS
– POWER–UP
(para 3–1).
(4) On DEK, rotate DATA
ENTRY switch to STBY
for 5 seconds, then back
to FD/LS (ADC).
(5) Repeat FD/LS check
beginning with step b. If
NO–GO repeats after
CORRECTIVE ACTION,
refer to
TM 9-1230-476-20-2 for
troubleshooting the MUX
system.
NOTE
Record all NO–GOs before rotating DATA
ENTRY switch to STBY (ADC).
e. On DEK, rotate
DATA ENTRY switch
to STBY (ADC).
