Sony SA-WCT180 Service Manual ▷ View online
SERVICE MANUAL
Sony Corporation
Published by Sony Techno Create Corporation
SA-WCT180
ACTIVE SUBWOOFER
9-896-126-02
2015E33-1
©
2015.05
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Chinese Model
Ver. 1.1 2015.05
• SA-WCT180 is the active subwoofer in HT-CT180.
• All of the units included in the HT-CT180 (SA-WCT180/
• All of the units included in the HT-CT180 (SA-WCT180/
SA-CT180/Remote control) are required to confi rming op-
eration of SA-WCT180. Check in advance that you have
all of the units.
eration of SA-WCT180. Check in advance that you have
all of the units.
• For the TEST MODE for this unit, refer to the service manual of HT-CT180.
SPECIFICATIONS
POWER OUTPUT (reference)
5
45 W (per channel at 4 ohms, 100 Hz) (Chinese model)
45 W (per channel at 4 ohms, 100 Hz) (Chinese model)
0 W (per channel at 4 ohms, 100 Hz) (Except Chinese model)
Speaker system
Subwoofer system, Bass reflex
Speaker
130 mm (5
1
/
8
in) cone type
Power requirements
120 V AC, 60 Hz (US and Canadian models)
Power consumption
On: 13 W
Standby mode: 0.5 W or less
Standby mode: 0.5 W or less
Dimensions (approx.) (w/h/d)
170 mm × 342 mm × 325 mm
(6
(6
3
/
4
in × 13
1
/
2
in × 12
7
/
8
in)
Mass (approx.)
5.5 kg (12 Ib 2 oz)
Frequency band
2.4 GHz band (2.404 GHz - 2.476 GHz)
Modulation method
GFSK
Design and specifications are subject to
change without notice.
change without notice.
Wireless receiver
220 V - 240 V AC, 50 Hz/60 Hz (AEP, UK, Indian, Singapore,
Argentina, Thai, Australian and Chinese models)
Argentina, Thai, Australian and Chinese models)
110 V - 240 V AC, 50 Hz/60 Hz (Latin American model
(Except Argentina))
(Except Argentina))
Note:
Be sure to keep your PC used for service and
checking of this unit always updated with the
latest version of your anti-virus software.
In case a virus affected unit was found during
service, contact your Service Headquarters.
Be sure to keep your PC used for service and
checking of this unit always updated with the
latest version of your anti-virus software.
In case a virus affected unit was found during
service, contact your Service Headquarters.
SA-WCT180
2
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
After correcting the original service problem, perform the follow-
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
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 microamperes.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
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 microamperes.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable. (See
Fig. A)
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable. (See
Fig. A)
1.5 k
Ω
0.15
μF
AC
voltmeter
(0.75 V)
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
The BLUETOOTH
®
word mark and logos
are registered trademarks owned by
Bluetooth SIG, Inc. and any use of such
marks by Sony Corporation is under
license.
Bluetooth SIG, Inc. and any use of such
marks by Sony Corporation is under
license.
The N Mark is a trademark or registered
trademark of NFC Forum, Inc. in the
United States and in other countries.
trademark of NFC Forum, Inc. in the
United States and in other countries.
Android™ is a trademark of Google Inc.
“ClearAudio+” is a trademark of Sony
Corporation.
Corporation.
Other trademarks and trade names are
those of their respective owners.
those of their respective owners.
This system incorporates Dolby* Digital
Surround System.
Surround System.
* Manufactured under license from
Dolby Laboratories.
Dolby, and the double-D symbol are
trademarks of Dolby Laboratories.
Dolby, and the double-D symbol are
trademarks of Dolby Laboratories.
Copyrights and Trademarks
SAFETY-RELATED COMPONENT WARNING!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WITH MARK 0 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.
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONC-
TIONNEMENT. NE REMPLACER CES COMPOSANTS QUE
PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DON-
NÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONC-
TIONNEMENT. NE REMPLACER CES COMPOSANTS QUE
PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DON-
NÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
Ver. 1.1
SA-WCT180
3
SECTION 1
SERVICING NOTES
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong
viscosity
Unleaded solder is more viscous (sticky, less prone to fl ow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
also be added to ordinary solder.
ADVANCE PREPARATION WHEN CONFIRMING OP-
ERATION
All of the units included in the HT-CT180 (SA-WCT180/SA-
CT180/Remote control) are required to confi rming operation of
SA-WCT180. Check in advance that you have all of the units.
ERATION
All of the units included in the HT-CT180 (SA-WCT180/SA-
CT180/Remote control) are required to confi rming operation of
SA-WCT180. Check in advance that you have all of the units.
DESTINATION ABBREVIATIONS
The following abbreviations for model destinations are used in this
service manual.
The following abbreviations for model destinations are used in this
service manual.
• Abbreviations
AR :
AR :
Argentina
model
AUS :
Australian
model
CH
: Chinese model
CND : Canadian model
E12
E12
: Indian model
LA
: Latin American model (Except Argentina)
SP
: Singapore model
TH :
Thai
model
1.
SERVICING NOTES
............................................. 3
2. DISASSEMBLY
2-1. Disassembly
Flow
........................................................... 6
2-2. AMP
Block
..................................................................... 6
2-3. MAIN
Board
................................................................... 7
2-4. POWER
Board
................................................................ 8
2-5. AC Cord (AC1) ............................................................... 9
2-6. Front Panel Block ........................................................... 10
2-7. Loudspeaker (13 cm) (SP1) ............................................ 11
2-8. Grille
2-6. Front Panel Block ........................................................... 10
2-7. Loudspeaker (13 cm) (SP1) ............................................ 11
2-8. Grille
(SW)
Assy
............................................................. 11
3. DIAGRAMS
3-1. Block
Diagram
................................................................ 12
3-2. Schematic Diagram - MAIN Board (1/3) - ..................... 14
3-3. Schematic Diagram - MAIN Board (2/3) - ..................... 15
3-4. Schematic Diagram - MAIN Board (3/3) - ..................... 16
3-5. Printed Wiring Board - MAIN Board - ........................... 17
3-6. Printed Wiring Board - KEY Board -.............................. 17
3-7. Schematic Diagram - KEY Board - ................................ 17
3-8. Printed Wiring Board - LED Board - .............................. 18
3-9. Schematic Diagram - LED Board - ................................. 18
3-10. Printed Wiring Board - POWER Board - ........................ 18
3-11. Schematic Diagram - POWER Board - .......................... 19
3-3. Schematic Diagram - MAIN Board (2/3) - ..................... 15
3-4. Schematic Diagram - MAIN Board (3/3) - ..................... 16
3-5. Printed Wiring Board - MAIN Board - ........................... 17
3-6. Printed Wiring Board - KEY Board -.............................. 17
3-7. Schematic Diagram - KEY Board - ................................ 17
3-8. Printed Wiring Board - LED Board - .............................. 18
3-9. Schematic Diagram - LED Board - ................................. 18
3-10. Printed Wiring Board - POWER Board - ........................ 18
3-11. Schematic Diagram - POWER Board - .......................... 19
4.
EXPLODED VIEWS
4-1. AMP
Section
................................................................... 21
4-2. Front
Section
................................................................... 22
TABLE OF CONTENTS
The SERVICING NOTES contains important information for
servicing. Be sure to read this section before repairing the
unit.
servicing. Be sure to read this section before repairing the
unit.
Ver. 1.1
SA-WCT180
4
MODEL IDENTIFICATION
Distinguish by Part No. on the rear plate of a main unit.
Distinguish by Part No. on the rear plate of a main unit.
Note: The printed contents of following fi gure model number label may be different from the model number label of a main unit.
– Rear view –
MODEL NUMBER LABEL
Chinese model (CN4)
Thai model (TH1)
US and Canadian models (UC2)
UK model (CEK)
AEP model (CEL)
Australian model (AU1)
4-562-813-0
[]
4-562-812-0
[]
4-562-809-0
[]
4-562-817-0
[]
4-575-767-0
[]
4-569-254-0
[]
4-562-811-0
[]
4-562-816-0
[]
4-562-822-0
[]
4-562-819-0
[]
Argentina model (AR2)
Singapore model (SP1)
Indian model (E12)
Latin American model (LA9)
(Except Argentina)
(Except Argentina)
Ver. 1.1