• SA-WCT290/WCT291 is the active subwoofer in HT-CT290/CT291.
• All the units included in the HT-CT290/CT291 (SA-CT290/CT291, SAWCT290/WCT291, remote control) are required to confi rm the opera-
tion of SA-CT290/CT291. Check in advance that you have all the units.
• For the TEST MODE for this unit, refer to the service manual of HT-CT290/CT291.
SPECIFICATIONS
Subwoofer (SA-WCT290/
SA-WCT291)
CH models:
POWER OUTPUT
50 W (at 4 ohms, 100 Hz)
Other models:
POWER OUTPUT (reference)
100 W (per channel at 4 ohms,
100 Hz)
Speaker system
Subwoofer system, Bass reflex
Speaker
130 mm (5
Power requirements
US, CND models:
120 V AC, 60 Hz
LA9 models:
110 V – 240 V AC, 50/60 Hz
EA models:
127 V – 240 V AC, 50/60 Hz
Other models:
220 V – 240 V AC, 50/60 Hz
Power consumption
On: 15 W
Standby: 0.5 W or less
Dimensions (w/h/d) (approx.)
170 mm × 342 mm × 362 mm
(6
(vertical installation)
342 mm × 172 mm × 362 mm
(13
(horizontal installation)
Mass (approx.)
Design and specifications are subject to change without
notice.
Copyrights and Trademarks
• This system incorporates Dolby* Digital.
* Manufactured under license from Dolby Laboratories.
Dolby, Dolby Audio, and the double-D symbol are
trademarks of Dolby Laboratories.
• The BLUETOOTH
trademarks owned by Bluetooth SIG, Inc. and any use of
such marks by Sony Corporation is under license. Other
trademarks and trade names are those of their respective
owners.
• This system incorporates High-Defi nition Multimedia Inter-
face (HDMI™) technology.
The terms HDMI and HDMI High-Defi nition Multimedia
Interface, and the HDMI Logo are trademarks or registered
trademarks of HDMI Licensing, LLC in the United States
and other countries.
• “BRAVIA” is a trademark of Sony Corporation.
• “PlayStation” is a registered trademark of Sony Computer
Entertainment Inc.
• MPEG Layer-3 audio coding technology and patents
licensed from Fraunhofer IIS and Thomson.
• Windows Media is either a registered trademark or trademark
of Microsoft Corporation in the United States and/or other
countries.
®
SA-WCT291
word mark and logos are registered
US Model
Canadian Model
E Model
Australian Model
SA-WCT290
AEP Model
UK Model
SA-WCT290/WCT291
• This product is protected by certain intellectual property
rights of Microsoft Corporation. Use or distribution of such
technology outside of this product is prohibited without a
license from Microsoft or an authorized Microsoft subsidiary.
• “ClearAudio+” is a trademark of Sony Corporation.
• Other system and product names are generally trademarks or
registered trademarks of the manufacturers. ™ and ® marks
are not indicated in this document.
• Notice that the minus side of a tantalum capacitor may be damaged by heat.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following 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
WT-540A. Follow the manufacturers’ instructions to use these
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)
Fig. A. Using an AC voltmeter to check AC leakage.
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
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
6. ELECTRICAL PARTS LIST .............................. 22
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE
PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
2
SECTION 1
SERVICING NOTES
SA-WCT290/WCT291
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the leadfree 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
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.
Soldering irons using a temperature regulator should be set to
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.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
NOTE OF PERFORMING THE OPERATION CHECK IN
THE STATE THAT HEAT SINK WAS REMOVED
When performing the operation check in the state that this unit was
disassembled, it is possible to perform the operation check in the
state that heat sink was removed. But don’t perform the operation
check in the long time, and perform the operation check in the
volume state as low as possible.
Distinguish by Part No. and destination code on the rear side of
the subwoofer.
– Rear view –
MODEL NUMBER LABEL
CAPACITOR ELECTRICAL DISCHARGE PROCESSING
When checking the board, for the electric shock prevention, connect the resistors to both ends of capacitors to discharge the capacitor as shown in the fi gure below.
Note 1: When the connector that connects the SWITCHING
REGULATOR 3L411L board (US, CND) or SWITCHING
REGULATOR 3L411W board (Except US, CND, E12) or
SWITCHING REGULATOR 3L411W-1 board (E12) to the SUB
MAIN board is disconnected before discharging, completely
fi nish discharging both boards, and then reconnect the connector.
If discharging is not complete, sparking may occur when
connecting the connector and cause a blown fuse.
Note 2: Be sure to discharge using a resistor of 800 Ω or higher. (Do not discharge with a 0 Ω resistor)
Discharging at a point where excessive electric current fl ows
through a fuse may cause the fuse to blow.
– SUB MAIN Board (Component Side) –
800 :/
800 :/
2 W
2 W
C8138
C8140
ModelPart No.
SA-WCT290 (Black): US, CND
SA-WCT290 (Black): AEP
SA-WCT290 (Black): UK
SA-WCT290 (Black): RU
SA-WCT290 (Black): E12
SA-WCT290 (Black): E3
SA-WCT290 (Black): EA
SA-WCT290 (Black): SP
SA-WCT290 (Black): AUS
SA-WCT290 (Black): TH
SA-WCT290 (Black): LA9
SA-WCT291 : AEP
SA-WCT291 : UK
SA-WCT291 : RU
SA-WCT290 (White): EA
SA-WCT290 (White): SP
SA-WCT290 (White): TH
Destination code
Part No.
4-688-018-0[]
4-688-018-1[]
4-688-018-2[]
4-688-018-3[]
4-688-018-4[]
4-688-018-5[]
4-688-018-6[]
4-688-018-7[]
4-688-018-9[]
4-688-019-0[]
4-688-019-2[]
4-688-020-0[]
4-688-020-1[]
4-688-020-2[]
4-693-270-2[]
4-693-270-3[]
4-693-270-5[]
• Abbreviation
AUS : Australian model
CND : Canadian model
E3 : 240 V AC area in E model
E12 : 220-240 V AC area in E model
EA : Saudi Arabia model
LA9 : Latin-American model
RU : Russian Model
SP : Singapore model
TH : Thai model
3
SA-WCT290/WCT291
ADVANCE PREPARATION WHEN CONFIRMING OPERATION
All the units included in the HT-CT290/HT-CT291 (SA-CT290/
CT291, SA-WCT290/WCT291, remote control) are required to
confi rm the operation of SA-CT290/CT291. Check in advance that
you have all the units.
NOTE OF REPLACING THE IC8104 ON THE SUB MAIN
BOARD AND THE COMPLETE SUB MAIN BOARD
When IC8104 on the SUB MAIN board and the complete SUB
MAIN board are replaced, it is necessary to spread the compound
between the SUB MAIN board and the heat sink.
Spread the compound referring to the fi gure below.
– SUB MAIN Board (Component Side) –
compound
IC8104
NOTES ON THE WIRELESS CONNECTION (LINK) AFTER
REPAIRS ARE COMPLETE
When the parts below is replaced, the wireless connection (LINK)
of the Bar speaker and Subwoofer will be disconnected.
Before returning repaired products to the customer, follow the procedure below to LINK the Bar speaker and Subwoofer.
Also, if only the Bar speaker or Subwoofer is brought in for repair
and the parts below are replaced, be sure to inform the customer
when returning the repaired products that the customer must LINK
the Bar speaker and Subwoofer.
(Indicate that the LINK procedure is described in the operating
instructions)
THE ON/STANDBY INDICATOR FLASHES IN RED
If the power indicator flashes in red,
press Æ on the subwoofer to turn
o the power and check whether
the ventilation opening of the
subwoofer is blocked or not.
BOND FIXATION OF ELECTRIC PARTS
When SWITCHING REGULATOR 3L411L board (US, CND) or
SWITCHING REGULATOR 3L411W board (Except US, CND,
E12) or SWITCHING REGULATOR 3L411W-1 board (E12) is
replaced, it is necessary to fi x parts to the boards by using a speci-fi ed bond without fail.
Parts in which the LINK will be disconnected due to replacement:
• Complete SUB MAIN board
• BLUETOOTH MODULE (WB116A Y) (Ver C)
Activating wireless transmission between specifi c units
(Secure Link)
You can specify the wireless connection
to link the Bar Speaker to the subwoofer
using the Secure Link function. This
function can help prevent interference if
you use multiple wireless products.
1 Press LINK on the rear of the
subwoofer.
The power indicator on the
subwoofer flashes in orange.
2 Hold down CLEAR AUDIO+ for
5 seconds.
The USB and TV indicators flash
two times, then the MOVIE and
MUSIC indicators flash
alternately.
When the Bar Speaker is linked to
the subwoofer, the indicators stop
flashing and the power indicator on
the subwoofer lights up in orange.
If it failed, the indicators light up for
5 seconds. Try again the above
operation.
– SWITCHING REGULATOR 3L411L board
(US, CND) (Component Side) –
To deactivate this function, hold
down CLEAR AUDIO+ for
5seconds.