TM 11-6625-3053-14
ITEM
MALFUNCTION
CHECKS/CORRECTIVE ACTION
c) Measure voltage between test pins 12 and 8 on A2A1 card and
between test pins 12 and 11 on same card.
In both cases, voltage should measure approx +9 VDC.
If voltage is not obtained, replace AR2.
12
1. Output voltage check.
a) Remove instrument dust cover if on (para 6-20).
c) Energize sig gen.
d) Wait 2 mins and set MODULATION Switch to CW.
e) Using multimeter set to 100 VAC range. Measure voltages at the
points indicated. Correct voltages are shown.
1) Between test pins 1 and 2 of
A2A2 card assy ............................................. 10.8 VAC
2) Between pins 14 and 18
of P4 ............................................................. 26.5 VAC
If either of these voltages is not obtained, and DS1 and B1
13
A1 Card Assy (Osc Reg Assy) Output Faulty.
1. Check Al assy output.
a) Remove instrument dust cover if not off (para 6-20).
b) Set sig gen to initial settings of para 2-4 and energize.
c) Wait 2 mins and set MODULATION Switch to CW.
d) Start with the results of measurements per trouble- shooting item
8, checks 3.a, 3.b, and 4.
For faulty results on checks 3.a and 3.b, go to check 2 below.
For faulty results on check 4, go to check 7 below.
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