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|  TM 11-5820-401-34-3/0967-LP-432-3060
4-2.
VOLUME CONTROL TEST. (CONT)
CONTROL AND SWITCH SETTINGS (CONT)
EQUIPMENT
CONTROL OR SWITCH
POSITION/SETTING
I
I
AN/GRM-114A;
See test setup diagram
MM-100E
TEST PROCEDURE
1. Connect MM-100E attenuated probe A to MK-1978/VRC SPKR jack; connect probe B to GND
jack.(See test setup diagram ,
2. Turn R-442/VRC VOLUME control fully clockwise, then fully counterclockwise.
STANDARD. Tone from MM-100E speaker should be clear with no scratchiness or sudden changes
in volume at any point in the rotation of the VOLUME control.
3. If volume changes suddenly, if tone is scratchy, or if no tone at all is heard, see trouble-
shooting chart 4-1.
4-4
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