Technics SL-Q303 Service Manual

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mes
5 6
0203, 204
SVDPR5531K
0205
SVDEBR5505S
Q20!1, 202
2SD636
AG es Power source circuit
Asaoz || Voltage Bi
adjuste
\
AC LINE
A A 110-120/220-24.0V
(50/60Hz)
Notes: e
1. $1 : Arm switch in “‘on” position.
2. $2 : Start/stop switch in ‘‘off’’ position.
(not push condition)
3. $3,4 : Speed selector switch in ‘‘off’’ position.
(not push condition)
S$3....33-1/3r.p.m. S4....45r.p.m.
4. $401 : Voltage adjuster switch in ‘220 — 240V”’ position.
110 — 120<+= 220 — 240V
5. $402 : Power switch in ‘‘on” position.
6. The value in[____]is the reference voltage at stop of turntable,
measured by DC electronic circuit tester (high-impedance) on
the basis of chassis. (S1.... “‘on’’)
Therefore, the measured value may include some error depend-
ing on the internal impedance of DC circuit tester and other
conditions.
7. : +@) voltage line.
8. Important safety Notice:
Components identified by A\ mark have special characteristics important safety.
When replacing any of these compornents, use only manufacturer's specified parts.
e Reference voltage and waveform at each IC terminal (pin)
This indicated voltage values and waveform are measured by oscilloscope at 33 r.p.m. rotation.
{C101 (AN6635)
9.4V
Same as at left
Same as at left
Same as at left
| ster [Wo
aoe le
ae
eae
®
3.5V
(45r.p.m. .. OV)
Ov
(45r.p.m. . .4.0V)
3
°o °o
|
SL-Q303
Terminal guide of transistors and IC’s
AN6635
2SD636
2SD638

Technics SL-Q303 Specifications

General

Brand	Technics
Model	SL-Q303
Category	Turntable
Language	English