MECHANICAL ADJUSTMENT
Except for the following item, refer to the
Service
Manual already issued.
n
RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT
As shown in Figure 5-1, connect instruments, 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.
F i g u r e 5 - l
GENERAL ALIGNMENT INSTRUCTION
Should it become necessary at any time to check the alignment of this receiver, proceed as follows;
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.
A M I F / R F A L I G N M E N T
l
Set the signal generator to produce a signal of
AM modulated.
For adjustments in steps 4 and 9, see
TEST
S T A G E
R E M A R K S
IF
(Connect instruments as shown in Figure
RF (Connect
shown in Figure
4
output.
A M
600
600
5
A M
ing
1400
1400
TC5
6
Repeat steps
and 5 until no further Improvement
can be made.
RF (Connect instruments as shown in Figure
2.25
LOW
Band
MHz
end of
dial
7.4
High
end of
TC7
MHz
Adjust for
dial
maximum
0
6.0
6.0
MHz
MHZ
Repeat steps
and
until no further improvement
can be made.
7.2
Low
12 SW,
MHz
end of
La
dial
22.5
High
13
end of
Adjust for
MHz
dial
maximum
a.5
a.5
output.
14 SW,
MHz
MHz
15 SW,
ing
19
19
MHz
MHz
TC3
16
Repeat steps 12, 13, 14 and 15 until no further impro-
vement can be made.
Figure 5-2
Figure 5-3
Figure 5-4
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 the ferrite core to increase induct-
ance, or away to decrease inductance.
