ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
Table 4-7. Computer Testing and Troubleshooting - Continued
Malfunction
Test procedure
indication/corrective action
Normal indication
After approximately 15 minutes TTY
prints out:
DEPRESS OFF, ENT. PADS
POWER SHOULD REMAINON
NOTE
Perform step 2d immediately after
last TTY printout.
2d. sequentially press
PADS
Computer power turns off. PADS
Computer power should remain on.
PADS ON/OFF stays illuminated
ON/OFF switch-indicator goes off:
ON/OFF switch-indicator and
Replace 1/0 discrete circuit card
ENTER switch allowing at least
1 second between switches
assembly A9
EXECUTE switch-indicator goes off.
2e. P r e s s EXECUTE switch-
indicator to off
Computer fault indicator DS1 is
white
2f. Press EXECUTE switch-in-
EXECUTE switch-indicator lights.
Fault indicator DS1 does not set or
reset Replace computer fault
dicator to on
Computer fault indicator DS1 is set
indicator DS1
to white and then reset to black
EXECUTE switch-indicator goes off
2g. P r e s s E X E C U T E switch-
indicator to off
2h. S e q u e n t i a l l y press PADS
PADS ON/OFF switch-indicator
PADS ON/OPP switch-indicator goes
remains on: Replace circuit cards
ON/OPF switch-indicator and
off
in sequence shown and reattempt
ENTER switch to turn off power
PADS ON/OFF indicator switch
to the computer
test after each replacement I/O
discrete circuit card assembly A9
data buffer circuit card assembly
A6
NOTE
If operational tape is to be loaded for
core memory only, go to table 4-18
or 4-18.1. The solid state memory
already contains the operational
program therefore will not require a
reload. If a CDU or IMU test is to
be performed, go to table 4-11 or
4-14 (or 4-14.1), respectively. If
operational memory is to be installed,
proceed to step 2i.
2i. Set PS BATTERY and
VEHICLE circuit breakers CB1
and CB2 to OFF
4-56.1/(4-56.2
blank)
Change 6
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