Sony ta ax 301 service manual

Page 1

£va MANUAL

This set is the amplifier
Section in SEN-301.

US Model
Canadian Model

E Model

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
With 8 ohm loads both channels driven, from 20-20,000
Hz; rated 110 watts per channel minimum HMS power,
with no more than 0.9% total harmonic distortion from
250 milliwatts to rated output.

Amplifier section

Inpul
Sensitivity Impedance
PHONO 3.0 mV 50 kilohrns
TUNERICD/
VIDEO/TAPE 250 mV 50 kllohms
Output REC OUT: Voltage 150 mV, impedance 1 kohms

SPEAKER: Accepts speakers at B to 16 ohms
HEADPHONES: Accepts headphones with low
and high impedance
Frequency response PHONO: RIAA curve
TUNER/CDIVIDEOITAPE: 30 Hz-30 kHzxs dB
GRAPHIC EQUALIZER controls
Boost/cut range:
:8 dB (100 H1, 330 Hz, 1 kHz. 3.3 kHz)
:6 dB (10 kHz)

Dimensions Approx. 430 x130 x 355 mm (w/h/d)
117 x 5'/. x 14 Inches)
Weight Approx. 8.5 kg (18 lb 12 01)

General

Power requirements 120 V Ac, 60 Hz (US, Canadian)
120/220/240V AC, 50/60Hz (E)

Power consumption 200 W

AC outlet 1 switched, 100 W max.

Design and specifications subject to change without notice.

INTEGRATED STEREII AMPLIFIER

ON'Y®

Page 2

TA-AX30 1

TABLE OF CONTENTS

Section Title Page
1. DISASSEMBLY

l-l. Removal of the Front Panel ..................... 3
1-2. Removal of the Q511 ............................ 3
2. ELECTRICAL ADJUSTMENT .................... 4
3. DIAGRAMS

3-1. Block Diagram .................................. 5
32, Circuit Boards Location . . 8
3-3 Printed Wiring Boards ............................ 9
3-4. Schematic Diagram .............................. 13
3-5. Semiconductor Lead Layouts ...................... 17
4. EXPLODED VIEWS

4-1. Case, Front Panel Section ........................ 18
4-2. Chassis Section .................................. 19
5. ELECTRICAL PARTS LIST ...................... 20

SAFETY-RELATED COMPONENT WARNINGI!

COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL T0 SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.

MODEL IDENTIFICATION
--Model Number Label-

SONY. MODEL N0. TAAxaoi
-.__._

INTEGRATED STEREO AMPLIFIER

AC 120v 60Hz m..-

US model:

"l

SONY. MODEL NO. TA-AX301
-_

INTEGRATED STEREO AMPLIFIER
AC 120/220/240V~50/60Hz 200W

E

*~-E model

ATTENTION Au coMPOSANT AYANT RAPPORT
A LA SECURITE!

LEs COMPOSANTS IDENTIFIEs PAR UNE MAROUE A
SUR LES DIAGRAMMES SCHEMATIOUES ET LA LISTE
DES PIECES SONT CRITiouEs POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACEFI ces COMP
POSANTS OUE PAR DES PIECES SONY DONT LES
NUMERos SONT DONNéS DANS CE MANUEL 0U
DANS LES SUPPLEMENTS PUBLIEs PAR SONY.

SAFETY CH ECK-OUT

After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:

LEAKAGE TEST

The AC leakage from any exposed metal part to

earth ground and from all exposed metal parts to any
exposed metal part having a return to chassis, must

not exceed 0.5 mA (500 microampers).

Leakage

current can be measured by any one of three
methods.

I, A commercial

leakage tester, such as the
Simpson 229 or RCA WT-540A. Follow the
manufacturers instructions to use these instruA
ments.

A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter is suitable for
this job.

Measuring the voltage drop across a resistor by
means of a VOM or battery-operated AC volt-
meter. The limit" indication is 0.75 V, so
analog meters must have an accurate low-

voltage scale. The Simpson 250 and Sanwa
SH-63Ttd are examples of a passive VOM that
is suitable. Nearly all battery operated digital
multimeters that have 3 2V AC range are
suitable. (See Fig. A)

To Exposed Metal
Parts on Set

A C
voltmeter
(0.75 V)

0.15mr Tl: énskn

a:

Earth Ground

Fig. A. Using an AC voltmeter to check AC leakage.

Canadian model : 425VA