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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
Ë LA SƒCURITƒ!
LES COMPOSANTS IDENTIFƒS PAR UNE MARQUE ! SUR LES
DIAGRAMMES SCHƒMATIQUES ET LA LISTE DES PIéCES SONT
CRITIQUES POUR LA SƒCURITƒ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIéSES SONY
DONT LES NUMƒROS SONT DONNƒS DANS CE MANUEL OU
DANS LES SUPPƒMENTS PUBLIƒS PAR SONY.
MODEL IDENTIFICATION
Ñ Model Number Label Ñ
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
ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááááááááá 3
2. TEST MODE ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááááá 5
3. ELECTRICAL ADJUSTMENTS ááááááááááááááááááááááááááááá 6
4. DIAGRAMS
4-1. Circuit Boards Location ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áá 8
4-2. Printed Wiring Board Ñ Tuner Section Ñ áááááááááááááááááááááááá 9
4-3. Schematic Diagram Ñ Tuner Section Ñ ááááááááááááááááááááááááá 11
4-4. Printed Wiring Board Ñ Panel Section Ñ ááááááááááááááááááááááá 14
4-5. Schematic Diagram Ñ Panel Section Ñ ááááááááááááááááááááááááá 17
4-6. Printed Wiring Board Ñ Main Section Ñ ááááááááááááááááááááááá 20
4-7. Schematic Diagram Ñ Main Section Ñ áááááááááááááááááááááááááá 23
4-8. Printed Wiring Board and Schematic Diagram
Ñ Power Section Ñ ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááá 27
4-9. IC Pin Function ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááá 31
4-10. IC Block Diagrams ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááá 33
5. EXPLODED VIEWS
5-1. Main Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááááááááááááá 35
5-2. Panel Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááááááá 36
6. ELECTRICAL PARTS LIST ááááááááááááááááááááááááááááááááááá 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.
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SECTION 1
GENERAL
Ñ FRONT PANEL Ñ
1 KARAOKE PON/MPX button
2 SURROUND button
3 EFFECT ON/OFF button
4 MUSIC button
5 MOVIE button
6 GAME button
7 P FILE button
8 MEMO button
9 DBFB button
!¼ VOLUME
!Á GROOVE button
!ª TUNER BAND button
!£ MONO/ST button
!¢ FUNCTION button
!° MIC LEVEL
!¤ MIX MIC jack
!¦ PHONES jack
!¥ EDIT button
!» PLAY MODE button
@¼ 1/ALL DISCS button
@Á REPEAT button
@ª HIGH FREQ button
@£ ENTER/NEXT button
@¢ MULTI JOG STATION dial
@° LOW FREQ button
@¤ MEMORY button
@¦ TUNING MODE button
@¥ FLASH button
@» LOOP button
#¼ WAVE button
#Á AV INPUT jack
#ª CLOCK TIMER SET button
#£ TIMER SELECT button
#¢ RDS button (AEP, UK MODEL)
#° DISPLAY button
#¤ POWER button
