Sony PS-LX231 Service Manual

PS-LX230C
with PS-LX-230.
VL-45G cartridge is supplied with PS-LX230C, while VL-42G
cartridge is supplied with PS-L X231. Cartridge is not supplied
PS-LX230:
US Model
PS-LX230C:
US Model
Canadian Model
PS-LX231:
AEP Model!
UK Model
E Model!
PS-LX231
SPECIFICATIONS
Tumtable
Platter 30.0 cm (12 in.), aluminum-alloy diecast
Motor DC servo motor
Drive system Belt drive
Controlsystem §DCservocontrol system
Speed 3341/3 rom, 45 rpm
Starting characteristics
Comes to nominal speed within
1/2 rotation (334/3 rpm)
Wow and flutter 0.045% (WRMS), + 0.06% (DIN)
Signal-to-noise ratio
70 dB (DIN-B)
Automatic system
Return, reject
Suspension system
High elasticity gel insulator
Tonearm
Type PS-LX230/230C: Statically balanced
PS-LX231: Dynamically balanced
Pivot-to stylus length |
216.5 mm (83/2 in.)
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
A ON THE SCHEMATIC DIAGRAMS 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.
Cartridge
PS-LX230: Not supplied
PS-LX230C: VL-45G
Type Moving magnet type
Frequency response
20Hz to 20 kHz
Channel separation
20 dB at 1 kHz
Output voltage 3.5mVat1kHz,5cm/sec., 45°
Loadimpedance 50 to 100 kilohms
Tracking force 1.259
Stylus Sony ND-145G
(conical 0.6 mil diamond)
Weight 6g
— Continued on page 2 —
ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITE!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET |
UNE MARQUE /\ SUR LES DIAGRAMMES SCHE- )
MATIQUES ET LA LISTE DES PIECES SONT CRITIQUES :
POUR LA SECURITE DE FONCTIONNEMENT. NE REM-
PLACER CES COMPOSANTS QUE PAR DES PIECES
SONY DONT LES NUMEROS SONT DONNES DANS CE
MANUEL OU DANS LES SUPPLEMENTS PUBLIES PAR
SONY.
STEREO TURNTABLE SYSTEM
SONY.

Sony PS-LX231 Specifications

General

Motor	DC servo motor
Drive method	Belt drive
Speed	33 1/3, 45 RPM
Platter	Aluminum die-cast
Effective length	220.7 mm
Overhang	15 mm
Cartridge	Moving magnet
Stylus	Diamond
Frequency response	20 Hz to 20 kHz
Output	2.5 mV
Recommended load impedance	47 kΩ
Dimensions	430 x 95 x 358 mm
Tonearm	Static balance type

Summary

Service Manual Specifications

Safety Component Warning

Safety Related Component Warning

Highlights critical components identified by shading and mark for safe operation.

Safety Check-Out Procedures

Leakage Test

Details AC leakage testing methods, limits, and equipment.

Function of Controls

Tracking Force Fine Adjustment

Disassembly Procedures

Motor Removal

Arm Section Removal

Adjustment Procedures

Speed Adjustment

Guides on adjusting turntable speed using stroboscope or test record methods.

Stylus and Automatic Return Adjustments

Stylus Height Adjustment

Procedure to adjust stylus height and confirm it meets specifications.

Automatic Return Position Adjustment

Schematic and Exploded Views

Schematic Diagram

Provides the electronic schematic diagram for the turntable system.

Exploded Views and Parts List

Detailed parts breakdown with references for mechanical components.