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TM 11-5820-890-20-2
3-2
3.1.
OPERATIONAL CHECK. Continued
STEP 2. POWER CHECKS:
STEPS TO PERFORM
CHECKS TO MAKE
ACTIONS TO TAKE
2.1
Set VAA CB1 to ON
VAA CB1 trips?
NO:
Go to Step 2.2
YES: Remove CX 13290 from VAA J9
VAA CB1 still trips?
YES: Perform Op Check on radio
system and go to Step 2.2
NO:
Go to TS Chart 1
2.2
Set RT FCTN to REM
Press RT CALL and
HS PTT*
N/A
RT display is blank?
N/A
NO:
Continue
YES: Perform Op Check on radio
RT display reads FAIL 4?
NO:
Continue
YES: Replace RT
RT display reads CALL?
YES: Go to STEP 3
NO:
Replace RT
STEP 3. CM SELF TEST:
STEPS TO PERFORM
CHECKS TO MAKE
ACTIONS TO TAKE
3.1
Set CM FCTN to TST
All segments blank?
NO:
Continue
YES: Go to TS Chart 2
Some segments blank?
NO:
Continue
YES: Replace CM
•Gd" dsiplayed?
YES: Go to STEP 4
NO:
Replace CM
These maintenance procedures are to be used only with the CM system. See TM 20-1 for maintenance
procedures for radio sets. The Operational Check is a series of steps to evaluate equipment before placing the
equipment in service. This check should be done with the equipment assembled.
* NOTE:
This test RT for proper operation with CM. Call Display may be delayed up to 12 seconds.
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