Sony PS-242 Service Manual

Turntable section
Piatter 31cm (12/4 inches) diameter
Diecast aluminum-alloy
Motor Linear BSL (brushless and slotless)
DC servo-controlled motor
Drive system Direct drive
Speed 3343 rpm, 45 rpm
Wow and flutter 0.025% (WRMS)* , 0.03% (WRMS)
+0.045% (DIN)
Signal-to-noise ratio Better than 75 dB (DIN-B)
Automatic system Reject, return
Tonearm section :
Type Statically balanced, universal type
Pivot to stylus length
| 216.5 mm (84/2 inches)
Overall arm length 283mm (11?/s inches)
Overhang 16.5 mm
Tracking error Hed tO.
Tracking-force adjustment range
0'to:3-g
Acceptable range of total weight of shell and cartridge
12 to 18g
Cartridge VL-37G
Type Moving magnet type
Frequency response 10 Hz to 20 kHz
Channel separation 20dB at 1 kHz
Output voltage 3.mMVat-4:KHz,5.cm/séc:,-45°
Load impedance 50 to 100 kilohms
Tracking force 1.5-to.2.5g (2g recommended)
Stylus Sony ND-137G
(Conical 0.6 mil diamond)
Weight 13g (including shell)
General
Power requirements
Power consumption
Dimensions
Weight
220 V ac, 50/60 Hz (AEP model)
Adjustable to. 110—120V or
220 — 240 V ac, 50/60 Hz (E model)
120 V ac, 60 Hz (US model)
6 watts (US model)
8 watts (AEP, E model)
Approx. 430x130 x 370mm (w/h/d)
(17x 51/g x 14 $/g inches)
including projection parts and controls
Approx. 6.1 kg (13 Ib 1 0z) net
Approx. 7.6kg (16 lb 8 0z) in shipping carton
* This new measuring method concerns only the turntable assembly, in-
cluding the platter. It excludes wow and flutter caused by the tonearm, the
cartridge, or the record. Measured by obtaining signal from magnetic pick-
up head.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
ON THE SCHEMATIC DIAGRAMS, EXPLODED
VIEWS AND IN THE PARTS LIST ARE CRITICAL TO
SAFE OPERATION. REPLACE THESE COMPONENTS
WITH SONY PARTS WHOSE PART NUMBERS APPEAR
AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY. |