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TAPE
SPEED
ADJUSTMENT
(See Figure 18-1)
Insert the test tape (TEAC MTT-111, 3 kHz-recorded) and
play its intermediate area.
3. Then adjust the variable resistor inserting a high-frequency
adjustment bladed screwdriver through the adjustment hole
at the bottom
of the motor so that the frequency
counter
reads 2960 to 3000 Hz.
Test tape
MTf-111
Frequency counter
Playback mode
OOO
@ Pin iGNO)
DIN Socket
@ Pin tor G) Pin}
Figure 18-1
Should
it become
necessary at any time to check the align-
ment of this receiver, proceed as follows;
1. Set the volume control (VR109) 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
(SW101)
to "'radio"
position.
FM
IF/RF
ALIGNEMNT
@
Set the signal generator to produce a signal of 400Hz, 30%,
FM modulated.
TEST | FRE- | DIAL;
AD-
High
|
Adjust for
1 | FM
IF | sig [end of
a
best "S''
rie Ps ae ees
aft
dial
curve
RF (As shown in Figure 18-3 , make connection of instrument.)
pee
es
ai
uababetiie
ia
'
Low
87.3
2
FM
Band
| MHz
end of
Lg
dial
ae
on
| COVERT fom mp
pn
'
' age
High
;
3
EM
108.3
end of | TC2
Adjust for
MHz
dial
maximum
pp ae
pe
a
*F j-—____ -
output
:
|
8
is fe hi
| Track-;
MHz
| MHz
ea
ing | 108 | 108 |
ae
eas
| MHz | MHz | '¢1
Cet
5 9 .
hee
pl
io
a Sag
c a n e
RS,
aera
miler Sig. 35
=
=
rarer
Bs
Repeat steps 2,3,4 and 5 until no further improvement
can be made.
FM STEREO
ALIGNEMNT
DIAL
POINTER
ADJUST-
REMARKS
98MHz (54qB)
un modulated
Adjust for
MH
sila
38 + 0.15kHz
VR1
10.7 MHz,
FM
SWEEP
GENERATOR
FM
SIGNAL
GENERATOR
"S" curve
OSCILLOSCOPE
Telescopic
Rod Antenna
FM
STEREO
SIGNAL
GENERATOR
on
1000PF
—
| Rod
Antenna
Doin
COUNTER
ia
| UNIT
[ty CTO)
SF
330K ohm
nae
ach
eee
GND
—_____IGno
=~
ay
O
—18—
Figure 18-2
ELECTRONIC
Telescopic
VOLTMETER
(See Figure 18—5)
Rod Antenna
EXT. SP
DUMMY
:
(J601, J602)
Am
°
7
—o—
a4
-
7
3.20hm
GND
=
GNO
—
Figure
18-3
Telescopic
iC3
FREQUENCY
DUMMY
(See Figure 18—5)
Figure 18-4
R1
To Telescopic Rod Antenna
7
R1 = 37.5 oh
218 OND
io
76h
-
Ri = 50 ohm
2 = 50 oh
ohm
<a 2 = 80 ohm
To Chassis GND
Z: Output
impedance
of Signal generator
Figure 18-5
FM
DUMMY
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