TM 11-6625-1831-13
5-12. ADJUSTMENT (Cont)
LOCATION/ITEM
ACTION
REMARKS
4. TEST FIXTURE NO. 3
Test jacks A (+) and
Connect multimeter.
X (-)
5. TEST PANEL
a. DRIFT TEST potenti-
Turn until resistance is as low
This is the initial setting
ometeras possible.
of DRIFT TEST potenti-
ometer R1
Check position of knob -
If reading is exactly 135,
should read exactly 135.
go to step 7.
b. DRIFT TEST knob
Loosen setscrews. Turn knob
Do not turn potentiometer
until pointer is set to 135.
shaft.
Tighten setscrews.
6. TEST FIXTURE NO. 3
Test jacks A (+) and X (-)
Check resistance again: should
Remove multimeter.
be the lowest possible reading
when DRIFT TEST is set to
135.
7. TEST EQUIPMENT
Power supply
Connect to power. Turn on.
Connect output to test fixture
No. 3 jacks A (+) and k (-)
as shown. With digital volt-
meter, set output to 4.70 + 0.05
Vdc.
8. TEST PANEL
DRIFT TEST potenti-
Set to 138.
ometer
9. TEST FIXTURE NO. 3
Test jacks A (+) and
Measure voltage; should be
If voltage is +1.6 + 0.05 Vdc
X (-) +1.6 + 0.05 Vdc.
go to step 11.
5-57
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