TM 1–1520–238–T–1
4–36.2
Change 5
4–5A HARS – INTERACTIVE FD/LS CHECK
4–5A
(ADD) (cont)
TASK
RESULT
c. 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.
When MUX
COMMUNICATION GO
appears on the HOD, go to
next step.
TASK
RESULT
NOTE
The aircraft must be on the ground, LAND
selected and no torque from either engine for at
least 90 seconds for the EXTENDED ALIGN
TEST to be performed.
d. On CDU, press and
release 0 and 5
keys.
Check that the following
message appears on HOD:
ENTER THE NUMBER OF
THE TEST TO PERFORM
1 QUICK TEST
2 EXTENDED ALIGN TEST
If 1 is selected, check that the
following message appears
on HOD:
PUT HARS POWER
SWITCH IN NORM
POSITION
––WAIT––ALLOW
90 SECONDS FOR HARS
WARM–UP
e. On CDU, press and
release 0 and 5
keys.
If 2 is selected, check that the
following message appears
on HOD:
PUT HARS POWER
SWITCH TO OFF – THEN
TO NORM – WAIT FOR
ALIGN TO END
