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AM IF Alignment and Check
PC-Y777 B/E/G
1. Band select switch
+
AM or MW
|
Adjusting parts
T2
Alignment methode
4.
IF input
Positive side to TP3.
6.
7.
Adjust above mentioned aligning position so that maximum
and sym-
metrical wave form can be obtained in this case, the wave peak should
be appeared on the center marker (450 kHz) in the scope of sweeper.
@ FM Tracking Alignment
@ FM IF Alignment and Check
(The unit should not usualy require adjustment. Follow the steps below when adjustments are necessary.)
1. Band select switch
FM
2. Tuning position
\
Near the highest frequency position where no signal come
in.
L
3. Volume control
Minimum gain position.
[
4.
IF input
'|
Positive side to TP4.
|
5.
IF output
|
Positive side to TP6, Negative side to TP7.
6. Adjusting parts
IF: T1
7. Alignment methode
=
@) Remove CF3 to obtain single peak wave form.
@) Adjust T1 to maximize
10.7 MHz signal level.
8) After the adjustment set and connect CF3 as it was.
(No. 1802)
13
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