TEST SET OPERATION

TM 11-6625-4975-12

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TEST SET OPERATION. (CONT)

NOTE

Illustrations show lit keys in heavy outline, and lit indicators are filled in or blackened.

This method is used throughout the manual.

RDL/DDM/MOD display indicates the number of the bad memory chip and SELF TEST indicator lights

as shown above. After a short time, RDL/DDM/MOD display and SELF TEST indicator will flash on and

off to alert operator that a memory output is incorrect. Refer equipment to higher level of maintenance

if this happens.

Memory Check Passes

Test set automatically switches to VOR mode preset condition. Test set is now ready for use.

SELF-TEST OPERATION

Self-test operation consists of two parts: lamp check and memory check. When SELF TEST switch is

pressed and held, lamp check is performed. When SELF TEST switch is released, memory check is

performed.

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