Install guide

ARMY TM 5-6675-308-34

MARINE CORPS TM 08837A-34/2

Table 4-11. CDU Testing and Troubleshooting

Malfunction

Test procedure Normal indication indication/corrective action

Before taking any corrective action or conducting any repairs, make certain that PS BATTERY and VEHICLE

circuit breakers CB1 and CB2 are in OFF positions or damage to the equipment may result.

NOTE

The Test Procedure column contains the test operation to be performed. The Normal Indication column contains

the desired test set or teletype response to the test operation. The malfunction indication(s) and corrective action(s)

are listed in the third column.

All switches, switch-indicators, and indicators called out in the procedure are located on the SPU, unless otherwise

indicated.

To change a CDU card assembly, perform the following in order given:

Press EXECUTE switch-indicator to off

Press ON/OFF and ENTER switch-indicators

Set PS BATTERY and VEHICLE circuit breakers CB1 and CB2 to OFF

Change card assembly. (Refer to paragraph 3-17a)

Set BATTERY and VEHICLE circuit breakers CB1 and CB2 to ON

Press PADS ON/OFF switch-indicator to ON

Repeat the test

Check that tape reels are not deformed and that tape runs smoothly through tape reader head.

1. TEST SETUP

1a.

lb.

Check that the diagnostic align-

ment or solid state program is

loaded into computer memory

and that the computer is func-

tional in accordance with table

4-6, 4-6.1, 4-6.2, or 4-6.3

If EXECUTE switch-indicator is

lighted press it to off

Change 6

4-71