Specifications

(4)
(5)
(6)
(7)
Figure 30. Assembly A 7600, parts location
maximum indication on the
ME-26B/U and record the indica-
tion.
Increase the 606A output to 20 mv
as indicated on the 411A. Record
the ME-26B/U indication.
A normal indication, noted in (3)
above, should be +4.0 volts dc
A normal indication, noted in (4)
above, should be + 5.5 volts dc mini-
mum.
If the indications obtained are low
or absent, proceed to d below.
c. Bandwidth Test.
(1)
(2)
(3)
Adjust the 606A for a 411A indi-
cation of 10 mv.
Adjust potentiometer R7611 for an
ME-26B/U indication of +3 volts
dc.
Adjust the 606A output frequency to
10.500 mc and adjust the output
level to maintain a 411A indication
(4)
(5)
(6)
10 mv. A normal indication should
be +1.0 volts dc ±0.30.
Adjust the 606 A frequency to 13.000
mc while maintaining a 411A in-
dication of 10 mv. A normal indi-
cation should be +1.0 volts dc ±0.30.
If the indications obtained in (3) and
(4) above are normal, trouble iso-
lation in assembly A7600 is com-
plete.
If indications obtained in (3) and
(4) above are low, proceed to d
below.
d. Isolation.
(1) Adjust the 606A for a frequency of
11.500 mc at a level of 4.9 mv as
indicated on the 411A.
(2) Measure the listed typical signal
and dc voltage in the Chart below
to isolate the faulty part. Measure
the ac voltages with an ME-30B/U;
measure the dc voltage with an
ME-26B/U.
59