Except for the following item, refer to the
Service
Manual already issued.
n
RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT
As shown in Figure
make connection of instrument,
and adjust the head azimuth adjusting screw so that the
output signals from both channels will have maximum
waveform with the same phase in right and left.
HEAD
Figure 5-l
Should it become necessary at any time to check the align-
ment of this receiver, proceed as follows;
1. Set the volume control
to maximum.
2. Attenuate the signals from the generator enough to swing
the most sensitive range of the output meter.
3. Use a non-metallic alignment tool.
4. Repeat adjustments to insure good results.
5. Set the Function Selector Switch
to “radio”
position.
AM IF/RF ALIGNMENT
l
Set the signal generator to produce a signal of
AM modulated.
l
For adjustments in steps 4, see
.
S T A G E
S E T T - M E N T
T E S T
D I A L A D J U S T -
IF (As shown in Figure
make connection of instruments.)
I
RF
shown in
make connection of instruments.)
Repeat steps
and 5 until no further improvement
be made.
Figure 5-2
Figure 5-3
Check the alignment of the receiver antenna coil by
bringing a piece of ferrite (such as a coil slug) near the antenna
loop stick, then a piece of brass. If ferrite increases output,
loop requires more inductance. If brass increases output, loop
requires less inductance. Change loop inductance by sliding the
bobbin toward the center of ferrite core to increase
ce, or away to decrease inductance.
