Sony PS-X75 User Manual

SPECIFICATIONS
GENERAL TURNTABLE
Power Requirements: 240 V ac ~ Platter:
adjustable, 50/60 Hz (UK model)
220 V ac ~ Motor:
adjustable, 50/60 Hz (AEP model)
120 V ac, 60 Hz (US, Canadian mode!) Drive System:
110 — 120, 220 — 240 V ac ~
adjustable, 50/60 Hz (E model)
Speed:
Power Consumption: 18W
Dimensions: Approx. 480 (w) x 165 (h) x 420 (d) mm
19 (w) x 61/, (h) x 16% (d) inches
including projecting parts and controls
Weight: Approx. 13 kg, 28 Ib 11 oz (net):
Approx. 15 kg, 33 Ib 2 oz
(in shipping carton)
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
A 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.
ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITE!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET
UNE MARQUE /\ SUR LES DIAGRAMMES SCHE-
MATIQUES, LES VUES EXPLOSEES ET LA LISTE
DES PIECES SONT CRITIQUES POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER CES
COMPOSANTS QUE PAR DES PIECES SONY DONT
LES NUMEROS SONT DONNES DANS CE MANUEL
OU DANS LES SUPPLEMENTS PUBLIES PAR SONY.
US Model
Canadian Model
AEP Model
UK Model
E Model
STEREO TURNTABLE SYSTEM
Speed Control Range:
Starting
Characteristics:
Wow and Flutter:
Signal-to-Noise Ratio:
Speed Deviation:
Load Characteristics:
Automatic System:
32 cm (125/, inches), aluminum-alloy diecast
DC servo-controlled linear BSL motor
Direct drive, crystal-lock and magneciisc servo
control system
331/, rpm, 45 rpm
+10 % (crystal! lock OFF)
Comes to nominal speed within a habf
revolution (331/, rpm)
+0.035 % (DIN)
0.025 % (WRMS)
78 dB (DIN-B)
Within 0.003 %
0
%
at
tracking
force
up
to
150
g
(at
lead-in
groove
of
a
record)
Lead-in, return, reject, repeat
record-size selection
— Continued on page 2 —
SONY.
SERVICE MANUAL

Sony PS-X75 Specifications

General

Platter	Aluminum die-cast
Overhang	15 mm
Tracking force adjustment	0 - 3g
Type	Belt drive
Motor	DC servo motor
Speeds	33, 45 rpm
Wow and Flutter	0.025% (WRMS)
Signal-to-Noise Ratio	78dB

Summary

System Specifications

General and Turntable Specifications

Details on power, dimensions, weight, platter, motor, drive system, and speed performance.

Safety Component Warning

Identifies critical safety components for replacement.

Servicing Precautions

MOS IC Handling and Replacement

Guidelines for safely handling, replacing, and testing MOS ICs.

MOS IC Handling and Mounting

MOS IC Grounding and Testing Precautions

Techniques for safely handling and testing MOS ICs.

System Block Diagram

Tonearm 'Biotracer' Features

Tonearm Operation and Control

Details on tonearm damping, stylus force, auto functions, and lifter.

Automatic Disk Size Detection Circuit

Drop-point and End Detection Circuit

Mechanical Adjustments

Solenoid and Tonearm Adjustments

Procedures for adjusting solenoids, pivot sensitivity, stylus height, and coil plate.

Electrical Adjustments - Speed and Stylus Force

Speed and Stylus Force Calibration

Adjustments for drop-point, motor offset, speed, and stylus force.

Electrical Adjustments - Motor and Speed Detection

Speed and Motor Gain Calibration

Adjusting speed settings and motor gain/offset.

System Schematic Diagrams

Exploded Views - Mechanical Assembly

Exploded Views - Mechanical Assembly (Continued)

Electrical Parts List - Components

Semiconductors, Diodes, and ICs

Identification and part numbers for transistors, diodes, and integrated circuits.

Electrical Parts List - Resistors and Boards

Resistor Specifications and Part Numbers

List of resistors with values and corresponding part numbers.

Mechanical Parts List

Mechanical Parts List (Continued)

Electrical Parts List - Semiconductors

Transistor Identification

Diode and IC Identification

Electrical Parts List - ICs and Diodes

Electrical Parts List - Resistors