Sony STR-W550 - Abbreviations; Model Identification; Table of Contents

— 2 —
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tentalum capacitor may be damaged
by heat.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED 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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE ! SUR LES
DIAGRAMMES SCHÉMATIQUES 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.
MODEL IDENTIFICATION
— Model Number Label —
CND : AC 120V AC, ~ 60Hz 170W
AUS : AC 240V AC, ~ 50/60Hz 170W
TH : AC 220V AC, ~ 50/60Hz 170W
AEP, EE, CIS : AC 220-230V ~ 50/60Hz 170W
UK : AC 220-240V ~ 50/60Hz 170W
OTHER MODEL : AC 110-120V, 220-240V selectable
~ 50/60Hz 170W
MODEL IDENTIFICATION
MODEL NO.STR-W550
FM STEREO/FM-AM RECEIVER
• Abbreviations
TH : Thai SP : Singapore AR : Argentine
HK : HongKong EA3 : Saudi Arabia AUS : Australian
TW : Taiwan EA4 : Israel MY : Malaysia
IA : Indonesian JE : Tourist CND : Canadian
EE : East European
E2 : Tuner sections SW band do not exist.
E3 : Tuner sections SW band exist.
TABLE OF CONTENTS
1. GENERAL
······································································ 3
2. TEST MODE ·································································· 5
3. ELECTRICAL ADJUSTMENTS ····························· 6
4. DIAGRAMS
4-1. Circuit Boards Location ····················································· 8
4-2. Printed Wiring Board — Tuner Section — ························ 9
4-3. Schematic Diagram — Tuner Section — ························· 11
4-4. Printed Wiring Board — Panel Section — ······················· 14
4-5. Schematic Diagram — Panel Section — ························· 17
4-6. Printed Wiring Board — Main Section — ······················· 20
4-7. Schematic Diagram — Main Section — ·························· 23
4-8. Printed Wiring Board and Schematic Diagram
— Power Section — ························································· 27
4-9. IC Pin Function ································································ 31
4-10. IC Block Diagrams ··························································· 33
5. EXPLODED VIEWS
5-1. Main Section····································································· 35
5-2. Panel Section ···································································· 36
6. ELECTRICAL PARTS LIST ··································· 37
General
Power requirements 120V AC, 60 Hz (Canadian)
240V AC, 50/60 Hz (Australian)
220V AC, 50/60 Hz (Thai)
220 - 230V AC, 50/60 Hz
(AEP,East European,CIS)
220 - 240V AC, 50/60 Hz (UK)
110 - 120V/220-240V AC adjustable, 50/60 Hz
(OTHER MODEL)
Power consumption 170 watts
Dimensions (w / h / d) Approx. 280 × 205 × 336 mm
Mass Approx. 7.0 kg
Design and specifications are subject to change without notice.