Technics SA-222 M Service Manual

* Since standardized parts are mentioned in the parts list, they are sometimes different in Part No. and Color from
the product parts.
Color Product Part No.
ft
Silver
Black
Red
Black
Gold
Gold
Black
Gold
Type Figure No.
XTB4+8FFN
XTB3+10BFZ
XTW3+12HFYR
XTB3+8BFZ
XTB3+10B
XTW3+10H
XYA4+FF 10FZ
XTW3+16H
4x 8mm, Tapping
3x 10mm, Tapping
3x 12mm, Tapping (With plain washer)
3x 8mm, Tapping
3x 10mm, Tapping
3 x 10 mm, Tapping (With plain washer)
4x 10mm, (With spring washer & plain washer)
OB) O| BD) GB) GB) B| @1®
3 x 16 mm, Tapping (With plain washer)
m@ ADJUSTING INSTRUCTIONS
Note: AM OSC Coil (L202) and AM 2nd IFT (T202) have been already adjusted, and require no adjustment.
[ AM TUNER ADJUSTMENT |
Setting and Equipment used
. ACand DC electronic voltmeters (VT VM)
. AM signal generator (AM-SG)
. Maintain line voltage at 120 volts.
. Output of signal generator should be no higher than
necessary to obtain an output reading.
. Pull the AM ferrite-bar antenna (L201) outward.
. Set input selector to ‘tuner’ position.
Use a non-metal screwdriver for the adjustment.
Set FM-AM muting/mode switch to ‘‘on/FM auto” position.
Set band selector to ‘‘AM”' position.
Set tape monitor switch to ‘source’ position.
Set speaker selector to ‘‘main” position.
Set automatic-scan switch to “off"’ position.
Set FM/AM allocation selector to “‘0.2MHz/10kHz”’ position.
AM SIGNAL GENERATOR
FREQUENCY
DISPLAY
FREQUENCY
PARTS
PREPARATIONS ADJUSTED
ADJUSTING PROCEDURE
CONNECTION
AM-IF ADJUSTMENT
Connect AM-SG to AM
antenna terminal
through 220pF
capacitor. Common to
chassis. (Powerful input)
450kHz
(30% mod.
with 400Hz)
Connect AC VTVM
or scope to “‘Speaker"’
terminals of the set.
Frequency of
non-inter-
ference
a pene
T201 (1st IFT)
. Adjust the input frequency
and adjustment points so
that the output becomes
maximum.
ANALOG FREQUENCY METER ADJUSTMENT ‘* Set b
and selector to ‘‘FM” position.
No-Signal
90.1MHz
Connect DC VTVM
to ay terminal.
L4 (FM OSC Coil)
1.
Adjust L4 so that voltage
measured by DC voltmeter is
4.49 + 0,05V.
No-Signal
Connect DC VTVM
SOG Mie to terminal.
CT1 (FM OSC
Trimmer)
. Adjust CT1 so that voltage
measured by DC voltmeter is
10.71 + 0.05V.
No-Signal
100.1MHz
VR102
(Frequency meter)
. Adjust VR102 so that the
frequency meter indicates
100.1MHz. (Refer to Fig. 13)
No-Signal
107.9MHz
VR102
(Frequency meter)
2.
. Adjust VR102 so that the
frequency meter indicates
107.9MHz. (Refer to Fig. 12)
Repeat steps (4) and (5).
AM-RF ADJUSTMENT ‘* Set band selector to “AM” position.
No-Signal
Connect DC VTVM
1100kHz
to
Mi)
terminal.
CT202
(AM OSC Trimmer)
. Adjust CT202 so that the
frequency meter indicates
1100kHz. (Refer to Fig. 12)
. If it is not adjustable, set the
frequency to 530kHz and
adjust L202 (AM OSC Coil)
so that the voltage of TP1 is
1.2+ 0.05V.
. Next, set the frequency to
1500kHz and make sure that
the range is within @ of
Fig. 13.
If it is not within the range,
perform the adjustments of
steps 1 and 3 again.

Technics SA-222 M Specifications

General

Brand	Technics
Model	SA-222 M
Category	Stereo Receiver
Language	English