Sony SA-WCT290, SA-WCT291 Schematic

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Page 1

SA-WCT290/WCT291

SERVICE MANUAL

Ver. 1.0 2017.02

Photo: SA-WCT290 (Black) Photo: SA-WCT290 (White) /

• 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.)

6.3 kg (13 Ib 15 oz)

/8 in) cone type

/4 in × 131/2 in × 143/8 in)

/2 in × 67/8 in × 143/8 in)

Wireless transmitter/ receiver section

Frequency band

2.4 GHz (2.4000 GHz – 2.4835 GHz) Modulation method FHSS (Freq Hopping Spread Spectrum)

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.

9-890-686-01

2017B80-1

2017.02

ACTIVE SUBWOOFER

Sony Corporation

Published by Sony EMCS (Malaysia) PG Tec

Page 2

SA-WCT290/WCT291

NOTES ON CHIP COMPONENT REPLACEMENT

• Never reuse a disconnected chip component.

• 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)

To Exposed Metal Parts on Set

1. SERVICING NOTES ............................................. 3

2. DISASSEMBLY

2-1. Disassembly Flow ........................................................... 6

2-2. SUB MAIN Section ........................................................ 6

2-3. SUB MAIN Board .......................................................... 7

2-4. Switching Regulator ....................................................... 8

2-5. SUB KEY Board, Bluetooth Module .............................. 8

2-6. SUB LED Board, Front Panel Assy ................................ 9

2-7. Loudspeaker (130mm)-203-11 ....................................... 10

3. TROUBLESHOOTING .......................................... 11

4. DIAGRAMS

4-1. Block Diagram - AMP/PANEL/

POWER SUPPLY Section - ............................................ 13

4-2. Printed Wiring Board

- SUB MAIN Board (Component Side) - ....................... 15

4-3. Printed Wiring Board

- SUB MAIN Board (Conductor Side) - ......................... 16

4-4. Printed Wiring Board - SUB KEY Board - ..................... 17

4-5. Schematic Diagram - SUB KEY Board -........................ 17

4-6. Printed Wiring Board - SUB LED Board - ..................... 18

4-7. Schematic Diagram - SUB LED Board - ........................ 18

5. EXPLODED VIEWS

5-1. Back Panel Section ......................................................... 19

5-2. SUB MAIN Section ........................................................ 20

5-3. Speaker Cabinet Section ................................................. 21

1.5 kΩ0.15 μF

Earth Ground

voltmeter (0.75 V)

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.

Page 3

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.

– SWITCHING REGULATOR 3L411L Board (US, CND) (Conductor Side) – – SWITCHING REGULATOR 3L411W Board (Except US, CND, E12) (Conductor Side) – – SWITCHING REGULATOR 3L411W-1 Board (E12) (Conductor Side) –

C201

/2 W

800

MODEL IDENTIFICATION

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 :/

2 W

C8138

C8140

Model Part 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

Page 4

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.

• Object boards

1. SWITCHING REGULATOR 3L411L board (US, CND)

2. SWITCHING REGULATOR 3L411W board (Except US, CND, E12)

3. SWITCHING REGULATOR 3L411W-1 board (E12)

• Use bond

Part No. Description

7-600-020-70 ADHESIVE (SC608Z2) 180ML

• Parts position

1. SWITCHING REGULATOR 3L411L board

(US, CND) (page 4)

2. SWITCHING REGULATOR 3L411W board

(Except US, CND, E12) (page 5)

3. SWITCHING REGULATOR 3L411W-1 board

(E12) (page 5)

1. SWITCHING REGULATOR 3L411L board (US, CND)

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.

The USB indicator ﬂashes twice.

*The portion which applies bond:

Page 5

2. SWITCHING REGULATOR 3L411W board (Except US, CND, E12)

– SWITCHING REGULATOR 3L411W board

(Except US, CND, E12) (Component Side) –

SA-WCT290/WCT291

*The portion which applies bond:

3. SWITCHING REGULATOR 3L411W-1 board (E12)

– SWITCHING REGULATOR 3L411W-1 board

(E12) (Component Side) –

*The portion which applies bond:

Page 6

SA-WCT290/WCT291

SECTION 2

DISASSEMBLY

• This set can be disassembled in the order shown below.

2-1. DISASSEMBLY FLOW

SET

2-2. SUB MAIN SECTION (Page 6)

2-3. SUB MAIN BOARD (Page 7)

2-4. SWITCHING REGULATOR (Page 8)

2-5. SUB KEY BOARD, BLUETOOTH MODULE (Page 8)

Note: Follow the disassembly procedure in the numerical order given.

2-6. SUB LED BOARD, FRONT PANEL ASSY (Page 9)

2-7. LOUDSPEAKER (130mm)-203-11 (Page 10)

2-2. SUB MAIN SECTION



JIG When disassembling the unit, use the following jig for speaker removal.

Part No. Description J-2501-238-A JIG FOR SPEAKER REMOVAL

2 Remove the SUB MAIN section in the direction of the arrow.

4 CN8103 (4P)

3 CN8104 (3P)

1 seven screws (1) (3.5 u 14), TAPPING

5 SUB MAIN section

1 seven screws

– Rear view –

(1) (3.5 u 14), TAPPING

Page 7

2-3. SUB MAIN BOARD

Note 1: When the complete SUB MAIN board is replaced, refer

to “NOTES ON THE WIRELESS CONNECTION (LINK) AFTER REPAIRS ARE COMPLETE” on page 4.

:LUHVHWWLQJ

SUB KEY board

wire (flat type) (9 core)

SWITCHING REGULATOR

SA-WCT290/WCT291

stopper, wiring

SUB MAIN board

2 wire (flat type)

(9 core) (CN8101)

7 two screws (+BVTP 3 u 8)

6 heat sink Note 2:

the compound referring to “NOTE OF REPLACING THE IC8104 ON THE SUB MAIN BOARD AND THE COMPLETE SUB MAIN BOARD” on servicing notes (page 4).

When installing the heat sink, spread

5 two screws (+BVTP 3 u 10)

3 stopper, wiring

1 wire (flat type)

(26 core) (CN8100)

4 CN8102 (10P)

IC8104

8 SUB MAIN board

7 two screws

(+BVTP 3 u 8)

Page 8

SA-WCT290/WCT291

2-4. SWITCHING REGULATOR

2 one screw (+BVTP 3 u 8)

2 three screws (+BVTP 3 u 8)

3 stopper, wiring

1 CN1 (2P)

2 one screw

(+BVTP 3 u 8)

4 SWITCHING REGULATOR 3L411W (EXCEPT US, CND, E12) SWITCHING REGULATOR 3L411W-1 (E12) SWITCHING REGULATOR 3L411L (US, CND)

• Abbreviation CND : Canadian model E12 : 220-240 V AC area in E model

2-5. SUB KEY BOARD, BLUETOOTH MODULE

Note: When the BLUETOOTH module is replaced, refer to

“NOTES ON THE WIRELESS CONNECTION (LINK) AFTER REPAIRS ARE COMPLETE” on page 4.

3 one screw (+BVTP 3 u 8)

2 SUB KEY board

1 two screws

(+BVTP 3 u 10)

7 BLUETOOTH module

5 one screw

(+BVTP 3 u 8)

4 button, SW

6 cushion saranet

Page 9

2-6. SUB LED BOARD, FRONT PANEL ASSY

2 Insert the jig into a space and raise front panel section.

Note 2: When using a jig, please work so as not to injure front panel section and cabinet.

3 All bosses are removed while moving jig in the direction of the arrow, and front panel section is removed.

total eight bosses

– Bottom view –

SA-WCT290/WCT291

1 Insert a jig in two notches of bottom of the unit, and lift the front panel section a little.

2 Insert the jig into a space and raise front panel section.

Note 2: When using a jig, please work so as not to injure front panel section and cabinet.

Note 1: Please spread a sheet under a

unit not to injure cabinet.

3 All bosses are removed while moving jig in the direction of the arrow, and front panel section is removed.

4 Remove the front panel section in the direction of the arrow.

8 panel, front assy

Note 3: When installing the front panel section, remove the used glue and use a new glue to fix the front panel section.

5 CN8300 (3P)

6 two screws

(+BVTP 3 u 8)

7 SUB LED board

Page 10

SA-WCT290/WCT291

2-7. LOUDSPEAKER (130mm)-203-11

 ,QVWDOODWLRQGLUHFWLRQIRUWKHORXGVSHDNHU

(130mm)-203-11

Note: When installing the loudspeaker

(130mm)-203-11, make sure that there is a position of the speaker terminal to the position shown in the figure below.

terminals position

4 loudspeaker (130mm)-203-11

2 Remove the loudspeaker

(130mm)-203-11 in the direction of the arrow.

1 four screws (1) (3.5 u 16), TAPPING

3 terminal (narrow side)

3 terminal (wide side)

:LUHVHWWLQJ

loudspeaker (130mm)-203-11

terminal (wide side)

terminal (narrow side)

– Bottom view –

Page 11

Replace Bluetooth

module.

NoNo No

Yes

Disconnect R8165.

Check PVDD_STBY

at CN8100 pin 18 is

high (3.3V)

SECTION 3

TROUBLESHOOTING

Replace SWITCHING

REGULATOR board.

Replace SUB MAIN board.

SA-WCT290/WCT291

Yes

Remove SWITCHING

REGULATOR wire at CN8102

and check PVDD24V short to

GND (only 18V)

Yes

Check CN8102 pin 1, 2, 3

and 7 is PVDD_24V

Yes

Replace SUB MAIN board.

Replace IC8001.NoCheck unsw3.3V R8033.

Yes

Check IC8001 pin 1 is 12V

Check CL8006 is D3.3V

Replace SWITCHING REGULATOR

3L411L or 3L411W or 3L411W-1.

Replace SUB MAIN board.

Check if IC8104 pin 35, 39,

Yes

ON/STANDBY lamp LED

flashes in red.

1. ON/STANDBY lamp LED ﬂ ashes in red (PROTECT)

Note: Do not set volume MIN

(PROTECT)

ON/STANDBY lamp LED

40 is short to GND.

does not flash in red, when

Replace the IC8104 on the

SUB MAIN board.

Yes

removing the speaker and

turning the power on.

Check and replace

the speaker.

Yes

ON/STANDBY lamp LED does not light up.

2. ON/STANDBY lamp LED does not light up after AC in (Power is not turned on)

(Power is not turned on)

The voltage of the following is 18V or 24V.

SWITCHING REGULATOR 3L411L or 3L411W

Yes

or 3L411W-1:

Connector (CN101) pin 1 to 3 and pin 7.

Yes

The voltage of the following is 3.3V.

SUB MAIN board: Connector (CN8101) pin 7.

Replace the Bluetooth Module.

Page 12

SA-WCT290/WCT291

Replace Bluetooth Module in sound bar

Replace Bluetooth Module in subwoofer

and check sound

No No

Replace IC8103 on SUB MAIN board.

Yes

The signal of the following is inputted.

SUB MAIN board:

IC8104 pin 5

IC8104 pin 6

No No

Replace IC8104 on SUB MAIN board.

Yes

3. The sound is not outputted

The sound is not outputted.

The waveform of the following is inputted.

Yes

SUB MAIN board:

IC8103 pin 27

IC8103 pin 23

IC8103 pin 22

Yes

The signal of the following is outputted.

SUB MAIN board:

IC8104 pin 39

IC8104 pin 40

IC8104 pin 35

Check the contact between connector

(CN8103) on the SUB MAIN board and

speaker cable. Check the contact between

speaker and speaker cable.

Page 13

4-1. BLOCK DIAGRAM - AMP/PANEL/POWER SUPPLY Section -

SA-WCT290/WCT291

SECTION 4

DIAGRAMS

BLUETOOTH

MODULE

I2S_SDO

I2S_SCLK

I2S_LRCLK

TAS_RESET_N

SDA SCL

MUTE

TAS_XPDN

TAS_SD

KEY_PAIR

BT_BOOT

AC_CUT

PCONT

LED0

LED1

X001

12.288MHz

OUT

STREAM PROCESSOR

IC8103

MCLK11 49

SDIN4

SCLK

LRCLK

RESET

16 20

SDA

SCL MUTE

PDN

S8200

S8201

PWM_P_4

PWM_M_4

VAL ID

DIGITAL POWER AMP

IC8104

INPUT_A

INPUT_B

RESET

FAULT

16 17

OUT_A

OUT_B

OTW

TO AMP

VOLTAGE DETECT

IC8102

POWER SWITCH

Q8102

OUT VDD

L8102

L8103

+24V

SWITCHING REGULATOR

3L411W

(EXCEPT US, CND, E12)

SWITCHING REGULATOR

3L411W-1

(E12)

SWITCHING REGULATOR

3L411L

(US, CND)

PVDD_24V

SUB_24V

(AC IN)

SUBWOOFER

6LJQDOSDWK

: AUDIO (ANALOG)

: AUDIO (DIGITAL)

5FKLVRPLWWHGGXHWR VDPHDV/FK

D8300

LED DRIVE

Q8101

LINK

+3.3V

POWER CONTROL

Q8001

POWER CONTROL

Q8000

+12V

+3.3V REG.

IC8000

+12V REG.

IC8001

VOUT

ON/OFF

VIN

SA-WCT290/WCT291

1313

Page 14

SA-WCT290/WCT291

THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.)

For Printed Wiring Boards.

Note:

• X : Parts extracted from the component side.

• Y : Parts extracted from the conductor side.

• f : Internal component.

• : Pattern from the side which enables seeing. (The other layers’ patterns are not indicated.)

Caution:

Pattern face side: (Conductor Side) Parts face side: (Component Side)

• Indication of transistor.

Note: When the complete SUB MAIN board is replaced,

refer to “NOTE OF REPLACING THE IC8104 ON THE SUB MAIN BOARD AND THE COMPLETE SUB MAIN BOARD” and “NOTES ON THE WIRELESS CONNECTION (LINK) AFTER REPAIRS ARE COMPLETE” on page 4.

Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.

These are omitted.

For Schematic Diagrams.

Note:

• All capacitors are in μF unless otherwise noted. (p: pF)

50 V or less are not indicated except for electrolytics and tantalums.

• All resistors are in Ω and 1/4 W or less unless otherwise

speciﬁ ed.

• f : Internal component.

• 2 : Nonﬂ ammable resistor.

• 5 : Fusible resistor.

• C : Panel designation.

Note: The components identiﬁ ed by mark 0 or

dotted line with mark 0 are critical for safety.

Replace only with part number speciﬁ ed. Note: Les composants identiﬁ és par une marque

0 sont critiques pour la sécurité.

Ne les remplacer que par une piéce portant

le numéro spéciﬁ é.

• A : B+ Line.

• Voltages and waveforms are dc with respect to ground in wireless connection to the bar speaker (SA-CT380/ CT381). no mark : POWER ON

• Voltages are taken with VOM (Input impedance 10 M).

Voltage variations may be noted due to normal production

tolerances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal production

tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F : AUDIO (ANALOG) J : AUDIO (DIGITAL)

• 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

SA-WCT290/WCT291

1414

Page 15

4-2. PRINTED WIRING BOARD - SUB MAIN Board (Component Side) - • : Uses unleaded solder.

SA-WCT290/WCT291

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

SUB MAIN BOARD (COMPONENT SIDE)

JC8116

C8138

C8140

C8142

C8148

C8143 C8144

JL8 111

C8141

C8146

JL8112

C8147

C8145

C8136

C8139

C8137

L8103

L8102

SUBWOOFER

CN8103

JC8115

R8138

R8141

C8135

R8140

C8132

C8134

C8133

C8130

C8131

IC8104

C8128

JC8109

JC8110

C8125

C8124

C8123

R8136

R8135

C8127

R8139

R8137

C8129

C8126

C8103

C8122

R8154

R8133

R8134

JC8107

JC8108

R8041

R8042

FB8106

FB8105

CL8004

C8119 C8120 C8121

CL8183

C8238

C8028

IC8001

C8023

R8037

JL8108

C8160

C8109

C8107

CL8006

JL8106

R8121

C8108

R8118

JL8107

R8229

JL8100

C8110

C8114

R8191

R8190

R8192

R8123

R8111

R8122

R8119

R8101

R8038

CL8181

C8115

IC8103

FB8238

FB8239

C8113

C8106

L8101

C8237

R8035

JL8102

JL8105

JL8104

JL8101

R8102

C8172

Q8101

C8171

CL8182

CN8104

CONNECT TO

SWITCHING REGULATOR 3L411W

(EXCEPT US, CND, E12)

SWITCHING REGULATOR 3L411W-1

(E12)

SWITCHING REGULATOR 3L411L

(US, CND)

JL8109

CL8146

CL8184

JL8103

SUB KEY BOARD

~ AC IN

CN8200

(Page 17)

>001P

11 12

110

JL8110

C8016

JL8001

L8004

CN8102

C8017

L8003

CL8180

C8020

R8012

IC8000

C8018

Q8001

R8028

C8019

C8008

R8026

C8022

R8031

R8030

CL8003

R8029

R8010

R8011

C8021

CN8101

R8124 R8125

R8039

Q8000

R8126

C8104

C8102

R8033

IC8102

C8112

R8175

R8176

R8112

D8100

R8106

R8174

R8173

Q8102 R8110

C8166

R8108

R8103

R8109

R8105

R8158

C8101

R8166

R8168

JL8113

X001

R8165

R8161

C8164

R8163

R8159

R8164

R8169

C8165

R8162

R8172

R8181R8182

R8208

R8240

R8189

CN8100

R8232

R8167

R8171

R8170

1-981-464-

(CHASSIS)

(11)

CONNECT TO

BLUETOOTH

MODULE

SA-WCT290/WCT291

>002P

SUB LED BOARD

CN8300

(Page 18)

Note: When the complete SUB MAIN board is replaced, refer to

“NOTE OF REPLACING THE IC8104 ON THE SUB MAIN BOARD AND THE COMPLETE SUB MAIN BOARD” and “NOTES ON THE WIRELESS CONNECTION (LINK) AFTER REPAIRS ARE COMPLETE” on page 4.

1515

Page 16

SA-WCT290/WCT291

4-3. PRINTED WIRING BOARD - SUB MAIN Board (Conductor Side) -

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

SUB MAIN BOARD (CONDUCTOR SIDE)

CL8133

CL8156

CL8157

CL8168

CL8128

CL8130

• : Uses unleaded solder.

CL8145

CL8176

CL8125

CL8001

CL8144

CL8113

CL8107

CL8169

CL8142

CL8172

CL8173

CL8178

CL8170

CL8175

CL8143

CL8171

CL8151

CL8147

CL8150

CL8152

CL8131

CL8129

CL8106

CL8134

CL8132

CL8105

CL8159

CL8112

CL8127

CL8174

CL8179

CL8177

CL8148

CL8153

CL8149

1-981-464-

(11)

SA-WCT290/WCT291

Note: When the complete SUB MAIN board is replaced, refer to

“NOTE OF REPLACING THE IC8104 ON THE SUB MAIN BOARD AND THE COMPLETE SUB MAIN BOARD” and “NOTES ON THE WIRELESS CONNECTION (LINK) AFTER REPAIRS ARE COMPLETE” on page 4.

1616

Page 17

SA-WCT290/WCT291

4-4. PRINTED WIRING BOARD - SUB KEY Board - • : Uses unleaded solder.

2 3 4 5 6 78

SUB KEY BOARD (COMPONENT SIDE)

FOR

SERVICE USE

SUB MAIN BOARD

CN8101

(Page 15)

>001P

CN8201

CN8200

10 11

R8251

C8201

S8201

S8200

C8200

R8250

1-981-465-

(11)

4-5. SCHEMATIC DIAGRAM - SUB KEY Board -

2 3 4 5 6 78

SUB KEY BOARD

CN8200

CL8200

KEY_POWER

SUB MAIN BOARD

CN8101

CL8201

2KEY_PAIR

CL8202

3UNSW3.3V

CL8203

4D_GND

CL8204

5UART_RX

CL8205

6PCONT

CL8206

7UART_TX

CL8207

8BT_BOOT

CL8208

9SDA

C8200

0.1u

S8200

C8201

0.1u

S8201

LINK

CN8201

3.3V1

D_GND2

UART_RX3

PCONT4

UART_TX5

BT_BOOT6

SDA7

R8250

R8251

FOR

SERVICE USE

SUB KEY BOARD (CONDUCTOR SIDE)

CL8202

CL8208

CL8205

CL8207

CL8201

CL8200

CL8203

CL8204

CL8206

1-981-465-

(11)

SA-WCT290/WCT291

1717

Page 18

SA-WCT290/WCT291

4-6. PRINTED WIRING BOARD - SUB LED Board - • : Uses unleaded solder.

2 3 4 5 6 78

SUB LED BOARD (COMPONENT SIDE)

D8300

CN8300

>002P

CN8104

(Page 15)

CL8302

CL8300

CL8301

R8300

R8301

1-980-504-

SUB MAIN BOARD

(12)

4-7. SCHEMATIC DIAGRAM - SUB LED Board -

2 3 4 5 6 78

SUB LED BOARD

SUB MAIN BOARD

CN8104

CN8300

1LED(G)

2LED(R)

3GND

CL8300

CL8301

CL8302

R8300

470

R8301

100

RED

GRN

D8300

CL-165HR/HG5-D-T

SUB LED BOARD (CONDUCTOR SIDE)

1-980-504-

(12)

SA-WCT290/WCT291

1818

Page 19

SECTION 5

EXPLODED VIEWS

SA-WCT290/WCT291

Note:

• -XX and -X mean standardized parts, so they may have some difference from the original one.

• Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items.

• The mechanical parts with no reference number in the exploded views are not supplied.

• Color Indication of Appearance Parts Example:

KNOB, BALANCE (WHITE) . . . (RED)  

Parts Color Cabinet’s Color

5-1. BACK PANEL SECTION

• Rear view

speaker cabinet section

The components identiﬁ ed by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number speciﬁ ed.

Les composants identiﬁ és par une marque 0 sont critiques pour la sécurité. Ne les remplacer que par une pièce portant le numéro spéciﬁ é.

SUB MAIN section

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark

1 4-874-614-12 SCREW (1) (3.5X14), TAPPING 2 2-682-469-11 FOOT (SW) (4 pieces, 1 set)

Page 20

SA-WCT290/WCT291

5-2. SUB MAIN SECTION

SUB KEY board (ns)

Note 1: When the complete SUB MAIN board is replaced, refer to

“NOTE OF REPLACING THE IC8104 ON THE SUB MAIN BOARD AND THE COMPLETE SUB MAIN BOARD” and “NOTES ON THE WIRELESS CONNECTION (LINK) AFTER REPAIRS ARE COMPLETE” on page 4.

Note 2: If wire (ﬂ at type) is replaced, install it after bending it in the

same form as that before replacement.

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark

51 1-828-256-61 WIRE (FLAT TYPE) (26 CORE) 52 A-2165-316-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: US, CND)

52 A-2165-413-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: AEP)

52 A-2165-424-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: UK)

52 A-2165-434-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: SP)

52 A-2165-444-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: E12)

52 A-2165-510-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for White model) (WCT291: AEP)

52 A-2165-520-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for White model) (WCT291: UK)

52 A-2166-007-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: LA9)

52 A-2180-393-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: RU)

52 A-2180-415-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: EA)

52 A-2180-421-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: AUS)

52 A-2180-427-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: TH)

52 A-2180-433-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: E3)

52 A-2180-443-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for White model) (WCT291: RU)

Note 3: When the BLUETOOTH module is replaced, refer to

“NOTES ON THE WIRELESS CONNECTION (LINK) AFTER REPAIRS ARE COMPLETE” on page 4.

Note 4: When the SWITCHING REGULATOR board is replaced,

spread the bond referring to “BOND FIXATION OF ELECTRIC PARTS” on page 4.

52 A-2180-545-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for White model) (WCT290: LA9)

52 A-2180-551-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for White model) (WCT290: SP)

52 A-2180-570-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for White model) (WCT290: EA)

52 A-2180-576-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for White model) (WCT290: TH)

53 1-828-308-61 WIRE (FLAT TYPE) (9 CORE)

0 54 1-474-674-11 SWITCHING REGULATOR 3L411W

(EXCEPT US, CND, E12)

0 54 1-474-674-21 SWITCHING REGULATOR 3L411W-1 (E12) 0 54 1-474-674-31 SWITCHING REGULATOR 3L411L (US, CND)

55 1-493-097-41 BLUETOOTH MODULE 56 4-582-118-01 BUTTON, SW

57 4-581-865-01 COVER, BACK

0 58 4-966-267-12 BUSHING (FBS001), CORD 0 59 1-834-966-42 POWER-SUPPLY CORD (AEP, RU, E3, SP, LA9) 0 59 1-835-068-21 CORD, POWER (AUS) 0 59 1-837-308-12 CORD, POWER-SUPPLY (US, CND)

0 59 1-839-940-21 POWER-SUPPLY CORD (TH) 0 59 1-839-999-22 POWER-SUPPLY CORD (UK, EA3, EA) 0 59 1-848-053-12 POWER-SUPPLY CORD (E12)

#1 7-685-646-71 SCREW +BVTP 3X8 TYPE2 IT-3 #2 7-685-646-79 SCREW +BVTP 3X8 TYPE2 IT-3

#3 7-685-647-79 SCREW +BVTP 3X10 TYPE2 IT-3 ns not supplied

Page 21

5-3. SPEAKER CABINET SECTION

103

SA-WCT290/WCT291

102

SUB LED board (ns)

102

101

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark

101 X-2594-348-1 PANEL, FRONT ASSY (CG-SW) B

(for Black model) (WCT290)

101 X-2594-262-1 PANEL, FRONT ASSY (CG-SW) W

(for White model) (WCT290/WCT291)

102 4-874-614-62 SCREW (1) (3.5X16), TAPPING

103 1-859-203-11 LOUDSPEAKER (130MM)-203-11 #1 7-685-646-71 SCREW +BVTP 3X8 TYPE2 IT-3

ns not supplied

Page 22

SA-WCT290/WCT291

SECTION 6

SUB KEY SUB LED SUB MAIN

Note:

• Due to standardization, replacements in the parts list may be different from the parts speciﬁ ed in the diagrams or the com- ponents used on the set.

• -XX and -X mean standardized parts, so they may have some difference from the original one.

• Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items.

• RESISTORS

All resistors are in ohms. METAL: Metal-ﬁ lm resistor. METAL OXIDE: Metal oxide-ﬁ lm resistor. F: nonﬂ ammable

• CAPACITORS

uF: μF

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark

SUB KEY BOARD

**************

< CONNECTOR >

CN8200 1-817-199-51 CONNECTOR, FFC/FPC 9P CN8201 1-785-466-51 CONNECTOR, FFC/FPC 7P

< SWITCH >

S8200 1-798-528-11 TACTILE SWITCH (1) S8201 1-798-528-11 TACTILE SWITCH (LINK)

*************************************************************

SUB LED BOARD

*************

< CONNECTOR >

ELECTRICAL PARTS LIST

• COILS uH: μH

• SEMICONDUCTORS In each case, u: μ, for example: uA. . : μA. . , uPA. . , μPA. . , uPB. . : μPB. . , uPC. . , μPC. . , uPD. . : μPD. .

A-2180-421-A SUB MAIN BOARD, COMPLETE (for SERVICE)

A-2180-427-A SUB MAIN BOARD, COMPLETE (for SERVICE)

A-2180-433-A SUB MAIN BOARD, COMPLETE (for SERVICE)

A-2180-443-A SUB MAIN BOARD, COMPLETE (for SERVICE)

A-2180-545-A SUB MAIN BOARD, COMPLETE (for SERVICE)

A-2180-551-A SUB MAIN BOARD, COMPLETE (for SERVICE)

A-2180-570-A SUB MAIN BOARD, COMPLETE (for SERVICE)

A-2180-576-A SUB MAIN BOARD, COMPLETE (for SERVICE)

************************

When indicating parts by reference number, please include the board name.

The components identiﬁ ed by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number speciﬁ ed.

Les composants identiﬁ és par une marque 0 sont critiques pour la sécurité. Ne les remplacer que par une pièce portant le numéro spéciﬁ é.

(for Black model) (WCT290: AUS)

(for Black model) (WCT290: TH)

(for Black model) (WCT290: E3)

(for White model) (WCT291: RU)

(for White model) (WCT290: LA9)

(for White model) (WCT290: SP)

(for White model) (WCT290: EA)

(for White model) (WCT290: TH)

CN8300 1-580-056-21 PIN, CONNECTOR (SMD) 3P

< DIODE >

D8300 6-502-843-01 DI CL-165HR/HG5-D-T

*************************************************************

A-2165-316-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: US, CND)

A-2165-413-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: AEP)

A-2165-424-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: UK)

A-2165-434-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: SP)

A-2165-444-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: E12)

A-2165-510-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for White model) (WCT291: AEP)

A-2165-520-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for White model) (WCT291: UK)

A-2166-007-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: LA9)

A-2180-393-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: RU)

A-2180-415-A SUB MAIN BOARD, COMPLETE (for SERVICE)

(for Black model) (WCT290: EA)

Note 1: When the complete SUB MAIN board is replaced, re-

fer to “NOTE OF REPLACING THE IC8104 ON THE SUB MAIN BOARD AND THE COMPLETE SUB MAIN BOARD” and “NOTES ON THE WIRELESS CONNECTION (LINK) AFTER REPAIRS ARE COMPLETE” on page 4.

< IC >

IC8001 6-723-083-01 IC S-1212BC0-E6T1U IC8103 6-723-247-01 IC TAS5534DGGR-S IC8104 6-723-248-01 IC TAS5614LA-S

*************************************************************

MISCELLANEOUS **************

51 1-828-256-61 WIRE (FLAT TYPE) (26 CORE) 53 1-828-308-61 WIRE (FLAT TYPE) (9 CORE) 0 54 1-474-674-11 SWITCHING REGULATOR 3L411W

(EXCEPT US, CND, E12)

0 54 1-474-674-21 SWITCHING REGULATOR 3L411W-1 (E12) 0 54 1-474-674-31 SWITCHING REGULATOR 3L411L (US, CND)

55 1-493-097-41 BLUETOOTH MODULE

0 59 1-834-966-42 POWER-SUPPLY CORD (AEP, RU, E3, SP, LA9) 0 59 1-835-068-21 CORD, POWER (AUS) 0 59 1-837-308-12 CORD, POWER-SUPPLY (US, CND) 0 59 1-839-940-21 POWER-SUPPLY CORD (TH)

0 59 1-839-999-22 POWER-SUPPLY CORD (UK, EA3, EA) 0 59 1-848-053-12 POWER-SUPPLY CORD (E12)

103 1-859-203-11 LOUDSPEAKER (130MM)-203-11

Note 2: If wire (ﬂ at type) is replaced, install it after bending it in

the same form as that before replacement.

Note 3: When the SWITCHING REGULATOR board is replaced,

spread the bond referring to “BOND FIXATION OF ELECTRIC PARTS” on page 4.

Note 4: When the BLUETOOTH module is replaced, refer to

“NOTES ON THE WIRELESS CONNECTION (LINK) AFTER REPAIRS ARE COMPLETE” on page 4.

Page 23

MEMO

SA-WCT290/WCT291

Page 24

SA-WCT290/WCT291

REVISION HISTORY

Ver. Date Description of Revision

1.0 2017.02 New

How to search for a contact point of signal lines or the like in DIAGRAMS SECTION

If a contact point of a BLOCK DIAGRAM, PRINTED WIRING BOARD or SCHEMATIC DIAGRAM is shown in a different page, use the PDF ﬁ le search function to ﬁ nd one.

e.g.) If a contact point is shown as

Procedure:

1. Press the [F] key while pressing the [Ctrl] key.

2. Input “>001Z” in the search box and press the [Enter] key.

3. The relevant part (page), where the contact point is shown, appears.

Note: If you still see the original page, press the [Enter] key again.

, follow the procedure below.

Sony SA-WCT290, SA-WCT291 Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual

TABLE OF CONTENTS

SERVICING NOTES

DISASSEMBLY

2-1. DISASSEMBLY FLOW

2-2. SUB MAIN SECTION

2-3. SUB MAIN BOARD

2-4. SWITCHING REGULATOR

2-5. SUB KEY BOARD, BLUETOOTH MODULE

2-6. SUB LED BOARD, FRONT PANEL ASSY

2-7. LOUDSPEAKER (130mm)-203-11

TROUBLESHOOTING

4-1. BLOCK DIAGRAM - AMP/PANEL/POWER SUPPLY Section -

DIAGRAMS

4-2. PRINTED WIRING BOARD - SUB MAIN Board (Component Side) - • : Uses unleaded solder.

4-3. PRINTED WIRING BOARD - SUB MAIN Board (Conductor Side) -

4-4. PRINTED WIRING BOARD - SUB KEY Board - • : Uses unleaded solder.

4-5. SCHEMATIC DIAGRAM - SUB KEY Board -

4-6. PRINTED WIRING BOARD - SUB LED Board - • : Uses unleaded solder.

4-7. SCHEMATIC DIAGRAM - SUB LED Board -

EXPLODED VIEWS

5-1. BACK PANEL SECTION

5-2. SUB MAIN SECTION

5-3. SPEAKER CABINET SECTION

SUB KEY SUB LED SUB MAIN

ELECTRICAL PARTS LIST

REVISION HISTORY