Sony SSWSFT-7 Service manual

SA-FT7ED/WFT7/SS-CNF7ED/

FRF7ED/WS-FT7

SERVICE MANUAL

Ver. 1.1 2005. 11

SA-WFT7 SS-FRF7ED

• SA-FT7ED is composed of following models.

COMPONENT MODEL NAME

FRONT/SURROUND SPEAKER SS-FRF7ED CENTER SPEAKER SS-CNF7ED SUBWOOFER SA-WFT7 SPEAKER STAND WS-FT7

SS-FRF7ED (with WS-FT7)

US Model

Canadian Model

AEP Model

UK Model

SS-CNF7ED

WS-FT7 is not included in US and Canadian model.

AUDIO POWER SPECIFICATIONS (US, CND model)

POWER OUTPUT AND TOTAL HARMONIC DISTORTION: With 4 ohm loads both channels driven, at 100 Hz; rated 250 watts per channel minimum RMS power, with no more than 10% total harmonic distortion from 250 milliwatts to rated output.

SS-FRF7ED (front/surround speakers)

Speaker system 2 way, magnetically shielded Speaker units Woofer: 10 cm (4 in.), cone

type Tweeter: 20 mm (3/4 in.),

dome type Enclosure type Bass reflex Rated impedance 8 ohms Power handling capacity Maximum input power: 120 W Sensitivity level 84 dB (1 W, 1 m) Frequency range 120 Hz – 70,000 Hz Dimensions (w/h/d) Approx. 130 × 510 × 30 mm

(5 1/8 × 20 1/8 × 1 3/16 in.)

with floor stand Approx. 130 × 1,100 × 30 mm (AEP, UK model) (5 1/8 × 43 5/16 × 1 3/16 in.)

(Diameter of base: 280 mm

(11 1/32 in.))

with table top stand Approx. 130 × 585 × 30 mm

(5 1/8 × 23 1/8 × 1 3/16 in.)

(Diameter of base: 250 mm

(9 7/8 in.))

with wall mounting bracket

Approx. 130 × 576 × 50 mm

(5 1/8 × 22 3/4 × 2 in.)

SPECIFICATIONS

Mass Approx. 2.0 kg (4 lb 7 oz)

with floor stand Approx. 7.7 kg (16 lb 15 oz) (AEP, UK model) with table top stand Approx. 3.3 kg (7 lb 4 oz) with wall mounting bracket

Approx. 2.5 kg (5 lb 9 oz)

SS-CNF7ED (center speaker)

Speaker system 2 way, magnetically shielded Speaker units Woofer: 8 cm (3 1/4 in.), cone

type (× 2) Tweeter: 20 mm (3/4 in.),

dome type Enclosure type Bass reflex Rated impedance 8 ohms Power handling capacity Maximum input power: 120 W Sensitivity level 84 dB (1 W, 1 m) Frequency range 130 Hz – 70,000 Hz Dimensions (w/h/d) Approx. 500 × 94 × 30 mm

(19 3/4 × 3 3/4 × 1 3/16 in.)

with table top stand Approx. 500 × 108 × 66 mm

(19 3/4 × 4 3/8 × 2 5/8 in.)

with wall mounting bracket

Approx. 500 × 94 × 42 mm

(19 3/4 × 3 3/4 × 1 11/16 in.)

– Continued on next page –

HOME THEATRE SPEAKER SYSTEM

9-879-750-02

Sony Corporation

Home Audio Division Published by Sony Engineering Corporation

1

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

Mass Approx. 1.6 kg (3 lb 8 oz)

with table top stand Approx. 1.8 kg (3 lb 15 oz) with wall mounting bracket

Approx. 1.7 kg (3 lb 12 oz)

SA-WFT7 (subwoofer)

Speaker system Active subwoofer,

magnetically shielded

Speaker units Woofer: 15 cm (6 in.), cone

type

Enclosure type Acoustically Loaded

Bass reflex

Reproduction frequency range

26 Hz – 200 Hz

Continuous RMS power output

250 W (4 ohms 100 Hz, 10% THD)

Input

LINE IN (input pin jack)

General

Power requirements US, CND model: 120 V AC, 60 Hz AEP, UK model: 220 – 240 V AC, 50/60 Hz Power consumptions 65 W

0.3 W (standby mode)

Dimensions (w/h/d) Approx. 175 × 610 × 298 mm

(7 × 24 1/8 × 11 3/4 in.)

Mass Approx. 11 kg (24 lb 4 oz)

WS-FT7 (speaker stand)

Dimension (w/h/d) Approx. 130 × 635 × 30 mm

(5 1/8 × 25 × 1 3/16 in.) (Diameter of base: 280 mm (11 1/8 in.))

Mass Approx. 5.7 kg (12 lb 9 oz)

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 A C 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 V OM 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 2V AC range are suitable. (See Fig. A)

Supplied accessories SA-FT7ED:

Speaker cord (3.5 m) (3) Speaker cord (10 m) (2) Pin cord (2 m) (1) Floor stand (2) (AEP, UK model) Terminal adapter (4) Table top stand base (4) (US, CND model) Table top stand base (2) (AEP, UK model) Center speaker stand base (1) Center speaker stand adjuster (1) Wall mounting bracket (for the front/surround speakers) (4) Wall mounting bracket (for the center speaker) (1) Wall mounting hook (10) Hex-head screw (8) Screw (M5) (18) (US, CND model) Screw (M5) (10) (AEP, UK model) Screw (M4) (20) Wrench (1) L-adapter (1) Sticker for the speakers (1) Sticker for the terminal adapters (4) Cleaning cloth (1)

SS-FRF7ED:

Speaker cord (10 m) (1) Terminal adapter (1) Table top stand base (1) Wall mounting bracket (speaker side) (1) Wall mounting bracket (wall side) (1) Wall mounting hook (2) Hex-head screw (2) Screw (M5) (4) Screw (M4) (4) Screw (for wall mounting bracket) (2) Wrench (1) Sticker for the speakers (1) Sticker for the terminal adapters (1) Cleaning cloth (1)

WS-FT7:

Cleaning cloth (1)

Design and specifications are subject to change without notice.

•Abbreviation CND: Canadian model

To Exposed Metal Parts on Set

0.15µF

1.5k

Ω

Earth Ground

AC voltmeter (0.75V)

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 P ARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT

LES COMPOSANTS IDENTIFIÉS P AR 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.

À LA SÉCURITÉ!!

2

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

SERVICING NOTES

1-1. SERVICE POSITION (SA-WFT7)

When repairing or servicing this set, arrange the boards as shown below.

FILTER board

SWITCH board

AMP board

1-2. NOTE FOR REPLACEMENT OF THE SPEAKER UNIT (SA-WFT7)

Pulled and raised gripping this position with pliers.

POWER boar

4

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

Pry the cover with a scraper to aboid damage.

1-3. NOTE FOR DISASSEMBLY OF THE TOP COVER (SS-FRF7ED) AND SIDE COVER (SS-CNF7ED)

5

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

SECTION 2

DISASSEMBLY

• The equipment can be removed using the following procedure.

SET

2-1. TOP COVER

(Page 6)

2-2. AMP BOARD,

FILTER BOARD

2-4. BOTTOM COVER (B) ASSY

(Page 8)

2-5. INPUT BOARD

(Page 8)

(Page 7)

2-6. ACIN BOARD

2-3. POWER BOARD

(Page 9)

(Page 7)

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

2-1. TOP COVER

three bosses

1

top cover

three bosses

2

three bosses

4

3

CN302 (2P)

CN301 (2P)

6

2-2. AMP BOARD, FILTER BOARD

)

5

two tapping screws (1)

(3.5

×

14)

7

two nuts

2

CN402 (2P)

3

CN403 (3P)

4

9

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

qg

CN601 (2P)

qd

screw

(+BVTP 3

qs

×

6)

two screws

(+BVTP 3

qf

AMP board

1

CN801 (3P

×

8)

qa

two screws

(+BVTP 3

CN401 (7P)

FILTER board

×

8)

0

CN603 (8P)

Ver. 1.1

6

two knobs (VOL)

2-3. POWER BOARD

3

screw

(+BVTP 4

×

8

CN205 (8P)

16)

8

control panel

2

two screws

(+BVTP 4

×

16)

1

4

three screws

(+BVTP 4

×

16)

7

CN203 (7P)

6

CN202 (3P)

0

two screws

(+BVTP 3

qa

POWER board

9

three screws

(+BVTP 3

5

CN201 (2P)

×

8)

×

8)

7

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

)

Ver. 1.1

2-4. BOTTOM COVER (B) ASSY

3

screw

qa

5

screw

(+BVTP 4

6

foot cover (B)

7

screw

(+BVTP 4

8

foot cover (A)

4

foot cover (A)

two tapping screws (1)

(3.5

×

14)

×

16)

×

16)

(+BVTP 4

×

16)

0

two tapping screws (1)

(3.5

×

14)

1

screw

(+BVTP 4

2

foot cover (B)

9

tapping screw (1)

qs

bottom cover (B) assy

(3.5

×

16)

×

14)

2-5. INPUT BOARD

3

peel the ornamental panel (FR)

qd

bottom cover (A)

7

two tapping screws (1)

(3.5

×

14)

4

screw

(+KTP 3.5

×

12)

8

qa

tapping screw (1)

(3.5

×

14)

6

two tapping screws (1)

(3.5

5

two tapping screws (1)

(3.5

qs

INPUT board

9

CN701 (3P)

0

CN901 (2P)

2

(+KTP 3.5

×

14)

×

14)

screw

×

12)

1

peel the ornamental panel (RR

8

2-6. ACIN BOARD

1

CN902 (2P)

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

Ver. 1.1

2

two screws

(+BVTP 3 × 8)

3

ACIN board

9

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

d

SECTION 3

DIAGRAMS

3-1. CIRCUIT BOARDS LOCATION

FILTER board

AMP board

LED boar

POWER board

ACIN board

INPUT board

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. (p: pF) 50 WV or less are not indicated except for electrolytics and tantalums.

• All resistors are in Ω and 1/ specified.

• 2 : nonflammable resistor.

• C : panel designation.

Note:

The components identified by mark 0 or dotted line with mark 0 are criti- cal for safety. Replace only with part number specified.

• A : B+ Line.

• B : B– Line.

•Voltage is dc with respect to ground under no-signal (detuned) condition.

•Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal production tolerances. no mark : POWER ON

• Signal path. F : LINE

• Abbreviation CND : Canadian model.

: Impossible to measure

∗

4

W or less unless otherwise

Note:

Les composants identifiés par une marque 0 sont critiques pour la sécurité. Ne les remplacer que par une piéce portant le numéro spécifié.

SW board

Note on Printed Wiring Boards:

• X : parts extracted from the component side.

• : Pattern from the side which enables seeing.

• Abbreviation CND : Canadian model.

C Q

B

E

BCE

B

These are omitted.

Q

C

E

These are omitted.

10

3-2. BLOCK DIAGRAM

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

J701

INPUT

PRE AMP

IC501 (1/2)

3

1

SIGNAL AMP

IC401

75

S501

PHASE

REVERSE NORMAL

PHASE AMP

IC503 (2/2)

6 7

SUB+9V

12 76

VR502 LEVEL

VOLTAGE

DETECT

Q403

SIGNAL DETECT

Q401,402

FILTER AMP

3 4

FILTER

Q501

S401

OFF

AMP

IC502 (2/2)

PROTECTION

RELAY/LED

DRIVE

Q201-203,206

Q502,503

+25V

D604

OVERLOAD

PROTECT

Q204,205,207

IC503 (1/2)

1 75 75 1 46

VR501

BASS BOOST

AUTO POWER OFF DETECT

IC402

POWER SAVE

AUTO

GREEN

RED

AMP

IC501 (2/2)

DC VOLTAGE

DETECT

Q604-606

IC502 (1/2)

3

Q602,603,607

LD801

ON/STANDBY

RY201

RY202

AMP

MUTE

DRIVER AMP

IC601

IN L+

IN R-

50

55

MUTE

THWINT

THWEXT

28

FEEDLIN

FEEDRIN

573736

GNLS

GNL

GPL

GPLS

GPRS

GPR

GNR

GNRS

22

21

18

17

5

4

64

63

POWER

AMP

Q651-654

POWER

AMP

Q671-674

DC

OFFSET

Q690,692,693

INPEDANCE

DETECT

Q600,689,691

SP901

SPEAKER

AC IN

S301

F901

POWER

~

SUB+9V +6.2V

+25V +15V

-25V -15V

T201

POWER

TRANSFORMER

+6.2V REG

Q404

+15V REG

Q505,506,551

-15V REG

Q507,508,552

D206

RECT

D201-204

AC OFF

DETECT

Q208

SUB+9V

RY201

RY202

RECT D101

DC DETECT

PH101

DC-DC CONVERTER

18

VD

2

F/B

IC101

VG H

VG L

OCP

VCI

16

12

9

8

ON/OFF

DRIVE

Q101

ON/OFF

DRIVE

Q102

D107

T101

DC-DC CONVERTER

TRANSFORMER

RECT D151

+25V

-25V

D159

• Signal path

: LINE

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

11 11

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

3-3. PRINTED WIRING BOARDS — FILTER SECTION — • Refer to page 10 for Circuit Boards Location.

A

B

C

D

1

R521 R519

C517

R523

C518

JP418

Q501

R511

C506

R510

C505

R509

2345678910111213

J701

INPUT

C551

C552

C404

11

(11)

C559

1

CN401

7

A

WHT

GRY GRY

GRY

GRY GRY

GRY

AMP BOARD

CN602

(Page 15)

B

P0WER BOARD

CN203

(Page 17)

R701

C701

CN701

13

WHT

RED

C702

BLK

C511

R520

R512

R522

JP404

JP419

Q502

IC503

JP408

R508

VR501

BASS

BOOST

Q503

JP409

C516

R517

JP420

C509

C512

R526

C412

C560

C403

R524

R525

IC502

C510

R412

R518

R516

D405

JP421

R411

S501

Q404

JP423

JP422

JP410

JP401

R515

R506

D500

IC402

R413

C507

R528

IC501

R504

R409

R410

-1

R513

R503

R514

R405

D501

JP405

CNP401

R505

C503

D403

C411

JP406

C508

JP425

D404

Q403

R406

R527

C502

JP407

C402

C558

D402

JP424

JP411

Q401

C557

C556

JP412

S401

C555

D401

Q402

JP402

Q552

Q551

R407

R408

R403

C408

IC401

JP403

-1

C553

D551

R404

Q506

C409

JP413

R402

C410

D552

C407

R401

R536

C521

C554

JP414

Q505

C406

C520

R535

VR502 LEVEL

JP415

C501

Q508

JP416

R551

R552

R531

Q507

JP417

R530

C533

L551

FB501

R533

L552

3

CN403

1

2

1

CN402

1-865-571-

C405

BLK

RED

WHT

GRY

WHT

CNP701

11

(11)

1-865-572-

E

• Semiconductor Location

Ref. No. Location

D401 D-6 D402 C-5 D403 C-5 D404 C-5 D405 C-3 D500 C-4 D501 C-5 D551 B-7 D552 B-7

IC401 C-7 IC402 D-4 IC501 B-4 IC502 B-3 IC503 C-2

Q401 D-6 Q402 D-6 Q403 D-5 Q404 D-4 Q501 C-1 Q502 B-2 Q503 B-2 Q505 B-8 Q506 B-7 Q507 B-9 Q508 B-8 Q551 B-6 Q552 B-6

-2

S501

PHASE

NORMAL REVERSE

S401

POWER SAVE

AUTO OFF

-2

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

1212

3-4. SCHEMATIC DIAGRAM — FILTER SECTION —

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

C501

C502

C503

C406

C407

R503

R504

R401

R402

C409

IC501(1/2)

R505

C408

R520

R408

IC401(1/2)

C517

C518

R523

D401

R521

Q401

Q402

S501

C516

VR502

R403

R407

IC401(2/2)

R404

IC503(2/2)

R519 R526

R506

R405

D402 D404

C402

IC503(1/2)

R509

VR501

C505

C506

R510

R508

Q403

R511

R512

R406

D403

R522

R409

S401

R517

C512C511

Q501

R518

R410

IC402(2/2)

IC502(2/2)

R525

R524

D500

C411

Q502 Q503

IC402(1/2)

R513 R514

C508

C507

R411

R413

C403

IC501(2/2)

R527

R528

C412

R515

D501

Q404

C510

R516

C509

R412

D405

C410

IC502(1/2)

C560

C558

C556

C555

C557

D552

D551

Q552

Q551

R552

C554

C553

R551

Q505

Q507

R530

R533

R531

R535

C520

C521

R536

CN403

L552

L551

Q506

Q508

FB501

C405

CN701

C559

C404

C552

C551

C533

R701

C702

CN401

CN402

C701

(Page 18)

(Page 16)

J701

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

13 13

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

3-5. PRINTED WIRING BOARD — AMP SECTION (1/2) — • Refer to page 10 for Circuit Boards Location.

• Semiconductor Location (Side A)

Ref. No. Location

IC601 C-6 Q603 B-8

Q691 B-5

R689

R677

Q603

R686

R685

R681

C674

C619

C618

C623

R608

C606

IC601

C605

C622

R603

R601

C603

Q691

R604

R666

R665

C652

R655

R651

R667

234567891011121314

1

A

B

C

D

R671

R687

R675

C672

C654

R661

E

R669

R657

F

G

H

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

I

J

11

1-865-569-

1414

(11)

3-6. PRINTED WIRING BOARD — AMP SECTION (2/2) — • Refer to page 10 for Circuit Boards Location.

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

A

B

C

D

E

1

CNP603

234567891011121314

THP601

R630

Q651

Q652

Q653

RED+ BLK-

C685

C686

C687

L605

G

D

S

G

D

S

G

D

S

C651

R646

R647

C656

R656

C662

R662

C655

R653

C663

RED

BLK

R605

C609

R660

CN601

SPEAKER

R654

SP901

C608

R694

C607

C610

C611

C620

R614

C628

R622

R621

C615

C621

C629

C612

C617

C613

R609

C630

R611

C614

C616

R680

Q605

R610

R674

Q606

R612

R620

D605

R682

R676

C636

R617

R673

Q602

C632

Q604

C601

Q607

R619

C675

C676

C637

R648

C602

C673

C683

C682

R649

S

D

G

S

D

G

S

D

G

CP602

Q674

Q673

Q672

CNP604

• Semiconductor Location (Side B)

Ref. No. Location

D605 D-8 D607 H-4

Q600 G-3 Q602 B-9 Q604 D-9 Q605 C-8 Q606 C-8 Q607 C-9 Q651 C-3 Q652 D-3 Q653 E-3 Q654 F-3 Q671 F-10 Q672 E-10 Q673 D-10 Q674 C-10 Q689 G-3 Q690 G-4 Q692 H-4 Q693 H-3

F

G

H

R659

G

D

Q654

S

L651

I

C659

Q689

Q600

R691

C657

C665

C653

R697

Q693

Q692

R699

R695

R696

D607

R663

Q690

C692

R698

C691

R692

R693

L671

C679

R683

C624

C626

C677

C667

L601

C625

C627

R679

C671

L602

S

D

Q671

G

(Page 12)

FILTER BOARD

CN402

A

CN602

12

CN603

1

C693

8

CP601

GRY

WHT

12

CN602

1

GRY

WHT

GRY

CN603

GRY

8

GRY

C

POWER

EP601

BOARD

CN205

(Page 17)

J

CNP602

SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7

15 15

CNP601

11

(11)

1-865-569-

Sony SSWSFT-7 Service manual

TABLE OF CONTENTS

SERVICING NOTES

DISASSEMBLY

top cover

POWER board

bottom cover (B) assy

INPUT board

ACIN board

DIAGRAMS