Sony SRSZ-1 Service manual

SRS-Z1

SERVICE MANUAL

REVISED

Ver 1.2 1999. 09

SPECIFICATIONS

Amplifier

Power output 3 W + 3 W
Input impedance 4.7 kΩ (at 1 kHz)
Input Stereo mini jack × 2 (INPUT1, 2)
Dimensions Approx. 140 × 40 × 140 mm

(55/8 × 15/8 × 55/8 in.) (w/h/d)

Mass Approx. 590 g 1lb 5 oz

US Model

Canadian Model

AEP Model

UK Model

E Model

Australian Model

Tourist Model

Speakers

System Full-range, bass reflex type
Speaker unit Magnetically shielded ø39 mm

Nominal Impedance 8 Ω
Rated input power 3 W
Dimensions Approx. 80 × 176 × 80 mm

Mass Approx. 380 g 13 oz

General

Power requirement DC IN 9 V jack accepts the supplied

Supplied accessories AC power adaptor (1)

Design and specifications are subject to change without notice.

(19/16 inch)

(31/4 × 7 × 31/4 in.) (w/h/d)

Sony AC power adaptor

Connecting cord
(stereo miniplug ↔ stereo miniplug) (1)

STEREO ACTIVE SPEAKER SYSTEM

MICROFILM

TABLE OF CONTENTS

1. GENERAL ·········································································· 2

2. DIAGRAMS

2-1. IC Block Diagram ······························································ 3
2-2. Printed Wiring Board·························································· 4
2-3. Schematic Diagram ···························································· 5

3. EXPLODED VIEWS···················································7

4. ELECTRICAL PARTS LIST ·····································9

SECTION 1

GENERAL

This section is extracted
from instruction manual.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK ! OR DO TTED LINE WITH
MARK ! 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.

— 2 —

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS P AR UNE MARQUE ! SUR LES
DIAGRAMMES SCHÉMA TIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

2-1. IC BLOCK DIAGRAM

• IC1, IC2 TEA2025B

SECTION 2

DIAGRAMS

+Vs OUT1 BOOT1 GND GND IN1+ GND

10K

DECOUPLING

50 5K

10K

1

BRIDGE OUT2 BOOT2 GND GND IN2+ SVRFEED

2

3

4

FEED
BACK

50

50

5

6

BACK

7

910111213141516

THERMAL

PROTECT.

START

CIRCUIT

8

Note on Printed Wiring Board:

• X : parts extracted from the component side.

• b : Pattern from the side which enables seeing.

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.

• All resistors are in Ω and 1/
specified.

4

W or less unless otherwise

• C : panel designation.

• U : B+ Line.

• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.

• Voltages and wavefor ms are dc with respect to ground
under no-signal (detuned) conditions.

• V oltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc­tion tolerances.

• Signal path.
E : AUDIO signal

— 3 —