Read Sony MHC-W550 / STR-W550 Service Manual online
STR-W550
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Tourist Model
SERVICE MANUAL
FM STEREO/FM-AM RECEIVER
MICROFILM
STR-W550 is RECEIVER section in
MHC-W550
MHC-W550
SPECIFICATIONS
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
Tuning range
87.5-108.0MHz (EXCEPT JE)
76.0-108.0MHz (JE)
76.0-108.0MHz (JE)
Aerial
FM lead aerial
Aerial terminals
75 ohm unbalanced
Intermediate frequency 10.7MHz
AM tuner section
Tuning range
Tuning range
(Canadian,Thai,Argentine,Australian,E2)
AM: 530-1,710kHz
AM: 530-1,710kHz
(with interval set at 10kHz)
531-1,710kHz
(with interval set at 9kHz)
531-1,710kHz
(with interval set at 9kHz)
(EXCEPT Canadian,Thai,Argentine,
Australian,E2)
MW: 531-1,602kHz
Australian,E2)
MW: 531-1,602kHz
(with interval set at 9kHz)
(AEP,UK)
LW: 153-279kHz
LW: 153-279kHz
(with interval set at 3kHz)
(EXCEPT AEP,UK,Canadian,Thai,
Argentine,Australian,E2)
SW: 5.95-17.90MHz
Argentine,Australian,E2)
SW: 5.95-17.90MHz
(with interval set at 9kHz)
Intermediate frequency 450kHz
Aerial
Aerial
AM loop aerial,
External aerial terminal
External aerial terminal
Video section
Inputs
Inputs
AV INPUT VIDEO
(phone jack) :
1 Vp-p, 75 ohms
MONITOR OUT
(phone jack) :
1 Vp-p, 75 ohms
(phone jack) :
1 Vp-p, 75 ohms
MONITOR OUT
(phone jack) :
1 Vp-p, 75 ohms
Amplifier section
DIN power output
DIN power output
80W +80W
(6 ohms at 1kHz, DIN)
(6 ohms at 1kHz, DIN)
Music power output
190W + 190W
(6 ohms at 1kHz, 10%, THD)
(6 ohms at 1kHz, 10%, THD)
Inputs
MD/VIDEO 1 IN (phono jacks) : voltage 250 mV,
impedance 47 kilo ohms AV INPUT AUDIO
(phone jacks) : voltage 250 mV, impedance 47
kilo ohms
MIX/MIC (phone jack) :sensitivity 1mV,
impedance 10 kilo ohms
impedance 47 kilo ohms AV INPUT AUDIO
(phone jacks) : voltage 250 mV, impedance 47
kilo ohms
MIX/MIC (phone jack) :sensitivity 1mV,
impedance 10 kilo ohms
Outputs
MD/VIDEO 1 OUT
(phone jacks) : voltage 250
mV, impedance 1 kilo ohm
PHONES (stereo phone
jack) : accepts headphone
of 8 ohms or more.
SPEAKER : accepts
impedance of 6 to 16
ohms
SUPER WOOFER :
Voltage 1 V, impedance 1
kilo ohms
(phone jacks) : voltage 250
mV, impedance 1 kilo ohm
PHONES (stereo phone
jack) : accepts headphone
of 8 ohms or more.
SPEAKER : accepts
impedance of 6 to 16
ohms
SUPER WOOFER :
Voltage 1 V, impedance 1
kilo ohms
— Continued on next page —
E2
: Tuner sections SW band do not exist.
— 2 —
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tentalum capacitor may be damaged
• 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.
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.
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
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
— 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
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
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
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.
— 3 —
SECTION 1
GENERAL
— FRONT PANEL —
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
!º
VOLUME
!¡
GROOVE button
!™
TUNER BAND button
!£
MONO/ST button
!¢
FUNCTION button
!∞
MIC LEVEL
!§
MIX MIC jack
!¶
PHONES jack
!•
EDIT button
!ª
PLAY MODE button
@º
1/ALL DISCS button
@¡
REPEAT button
@™
HIGH FREQ button
@£
ENTER/NEXT button
@¢
MULTI JOG STATION dial
@∞
LOW FREQ button
@§
MEMORY button
@¶
TUNING MODE button
@•
FLASH button
@ª
LOOP button
#º
WAVE button
#¡
AV INPUT jack
#™
CLOCK TIMER SET button
#£
TIMER SELECT button
#¢
RDS button (AEP, UK MODEL)
#∞
DISPLAY button
#§
POWER button
— 4 —
— BACK PANEL —
#¶
ANTENNA terminal
#•
SYSTEM CONTROL
#ª
MD/VIDEO jack
$º
FRONT SPEAKER terminal
$¡
SUPER WOOFER jack
$™
MONITOR OUT jack
$£
VOLTAGE SELECTOR switch
(E, Saudi Arabia, Singapore, Malaysia, Hong
Kong, Taiwan, Indonesian, Argentine, Tourist
MODEL)
Photo : E MODEL
