Sony PS-Q3A - Page 8

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3-2. ELECTRICAL ADJUSTMENTS
Stylus
Pressure
Adjustment
Power
Voltage
Adjustment
Speed
Adjustment
1.
Turn
on
the
POWER
switch.
Push
the
START/
Setting:
Setting:
STOP
switch
to
let
the
tonearm lead
in.
digital
voltmeter
frequency
counter
2. Turn off the POWER switch.
PHONO IN
LINE OUT
3. Adjust the stylus pressure at the range of
1.840.3g by changing the compression spring
hooking position under the tonearm at horizon-
tal.
Phono
amplifier
RV101
(Q101 emitter)
‘TREO
test record
YFSC-16
(3 kHz)
©
(chassis)
Procedure:
1. Select the SPEED/SIZE selector switch to "30" cm
and "33" rpm.
tension spring
2. Play 3 kHz signal in the test record.
3. Adjust RV102 for 3,000 Hz + 9 Hz on the coun-
ter.
4, Select the SPEED/SIZE selector switch to “30" cm
and "45" rpm.
9
-
strong weak
Stylus Height Adjustment
5. Play 3 kHz signal in the test record.
6. Adjust RV103 for 4,050 Hz + 12/Hz on the coun-
ter.
1. The tonearm is on the arm rest and UP condi-
tion.
2. Adjust the clearance between the tonearm top
surface and subframe inside surface by the
stylus height adjustment screw to 0.5 — 1.0
mm.
(45 rpm) (33 rpm)
RV103 RV102
3. After the adjustment 2, make sure that the
tonearm top surface does not touch with the
subframe inside surface by leading in and re-
turning the tonearm.
Procedure:
1. Turn on the POWER switch. (STOP mode)
2. Adjust RV101 for 3.1 V + 0.1 V on the digital
voltmeter.
subframe
tonearm