TM 1–1520–238–T–1
Change 5
4–91
4–13 SYMG – INTERACTIVE FD/LS CHECK (cont)
4–13
TASK
RESULT
c. On DEK, press and
release ()/0 and
VWX/8 keys (ADC).
On CDU, press and
release 0 and 8 keys
If any MUX NO–GO appears
on HOD, refer to
TM 9-1230-476-20-2 for
troubleshooting the MUX
system.
(ADD).
When MUX
COMMUNICATION GO
appears on the HOD, go to
next step.
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 ABC/1 and
GHI/3 keys (ADC).
If SYMBOL GENERATOR
GO appears on HOD, go to
next step.
On CDU, press and
release 1 and 3 keys
(ADD).
If one or more FD/LS
NO–GO displays listed below
appears on the HOD, perform
the following in sequence:
(1) Perform SYSTEMS
– POWER DOWN
(para 3–2).
(2) Replace symbol
generator
(TM 11-1520-238-23-1).
(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 11-1520-238-23-2.
