Sony ta a 50 service manual

Page 1

TA-A50

SERVICE MANUAL E Model

Australian Model
Tourist Model

fig

This set is the amplifier section in LBTAEO/ASOCD/ASOCDM,

SPECIFICATIONS
Peak music power output 750 W (4 speakers driven) Frequency response 10 Hz to 50 kHz :3 dB
Continuous HMS power output Power requirements 120/ 220/240 V AC adjustable.
60W + 60W 50/60 HZ
(6 ohms, at 1 kHz, 5 % THD) Power consumption 180 W
e . . Weight Approx. 6.0 kg
Input Jack type Sensnttvuty Impedance Dimensions Approx. 355 X 132 X 320 mm
PHONO (MM) Phone 33 mV 47 kohms (w/h/d, including projections)
ViDEO Phone 270 mV 47 kohms
MIC Phone 10 mV 1O kohms Design and specifications are subject to change without notice.
Audio output Jack type Impedance
SURROUND Phono Accepts speakers of 8 to 16
SPEAKER ohms
HEADPHONES Stereophone Accepts headphones of 8 ohms
or more

INTEGRATED STEREO AMPLIFIER
ONY;

Page 2

TA-A50

Section
SECTION 1.

SECTION 2.
ZvI I
2-2

2-3.
2-4.
2-5.

SECTION 3.
3-1.
3-2.

SECTION 4.

TABLE OF CONTENTS

lid-e
GENERAL >
DIAGRAMS
CIRCUIT BOARDS LOCATION ................................. 3
SCHEMATIC DIAGRAMS - PANEL Section - 4
1C BLOCK DIAGRAMS .......................................... 7
SCHEMATIC DIAGRAMS -MAIN Section- 8

IC BLOCK DIAGRAMS ~ 12

PRINTED WIRING BOARDS ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 13
SEMICONDUCTOR LEAD LAYOUTSm-Wwwnwnu 18

EXPLODED VIEWS
CABINET SECTION ............................................. 20

MAIN BOARD SECTION ' " 21

ELECTRICAL PARTS LIST ~~~~~~~~~~~~~~~~~~~~~~~~~~~ 22

SAFETY-RELATED COMPONENT WARNING ! I

COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH 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 PUB-
LISHED BY SONY.