Aiwa SS-US301, SW-US301, UZ-US301 Service Manual

SS-US301/SW-US301/UZ-US301

Power requirements and others

Power source U.S.A. model: 120 V AC, 60 Hz Other models: 220 - 240 V AC, 50/60 Hz Power consumptions U.S.A. model: 60 W

1 W (at the Power Saving Mode)

Other models: 60 W

0.5 W (at the Power Saving Mode)

Supplied accessories

USB cable (1.8 m (5.9 ft.) ) (1)

Design and specifications are subject to change without notice.

SERVICE MANUAL

Ver 1.0 2003.12

SS-US301 SW-US301 SS-US301

• UZ-US301 consists of the following models respectively.

UZ-US301 Subwoofer SW-US301 Satellite Speaker SS-US301

US Model

AEP Model

UK Model

E Model

For the U.S.A. model AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC DISTORTION: With 4 ohms loads subwoofer driven, from 20 - 200 Hz; rated 20 watts minimum RMS power, with no more than

0.8% total harmonic distortion from 250 milliwatts to rated output.

UZ-US301

SW-US301 (Subwoofer)

Type Active subwoofer, bass

Figure 130 mm (5

Maximum output power 45 W

Rated impedance 4 ohms Dimensions (w/ h/d) 160 × 300 × 300 mm

Mass 5.8 kg (12.79 lb) * Magnetically shielded type

9-961-437-01 Sony Corporation

2003L05-1 Aiwa Original Products C 2003.12 Published by Sony Engineering Corporation

reflex

type*

30 W (10 % THD)

(6 in.) (not including the projecting parts)

3

/8 × 11 7/

1

/8 in.), cone

× 11 7/

8

SPECIFICATIONS

Inputs and Outputs

USB Type B LINE LINE IN (pin jack) Speaker speaker output

SS-US301 (Satellite Speaker)

Type · Figure Front 58 mm (2 3/8 in.),

Maximum output power Front 25 W × 2

Dual Center 25 W

Rated impedance Front 8 ohms

8

Dimensions (w/ h/d) 85 × 200 × 125 mm

Mass Approx. 650 g (1.43 lb) ×

* Magnetically shielded type

(terminal)

cone type*, closed type Dual Center 48 mm

15

(1

/

uni directional type

17 W × 2 (10 % THD)

17 W (10 % THD)

Dual Center 4 ohms + 4 ohms

3

(3

/

8

(not including the projecting parts)

2

in.), cone type*

16

7

× 7

/8 × 5 in.)

USB ACTIVE SPEAKER SYSTEM

SS-US301/SW-US301/UZ-US301

r

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. Follo w 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 lowvoltage scale. The Simpson 250 and Sanwa SH-63Trd are e xamples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2 V A C range are suitable. (See Fig. A)

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 viscou-s (sticky, less prone to flow) 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.

To Exposed Metal Parts on Set

AC

1.5 k

0.15 µF

Fig. A. Using an AC voltmeter to check AC leakage.

Ω

Earth Ground

voltmete (0.75 V)

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 MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.

2

SERVICING NOTE

MODEL PART No.

AEP and UK models 4-253-567-0 US model 4-253-649-0 Korean model 4-254-404-0 Singapore model 4-254-406-0 Hong Kong model 4-254-408-0

[]

4

Location of controls

SECTION 2

GENERAL

SS-US301/SW-US301/UZ-US301

This section is extracted from instruction manual.

^/1 (POWER) indicator

USB indicator

PHONES

^/1 (POWER)

SURROUND MODE

USB

WOOFER LEVEL

VOLUME

USB/AUDIO IN

VOLUME LEVEL

-

6

1

USB/AUDIO IN

Connection

MD player CD player Game devices, etc.

B

Audio connecting cord (not supplied)

To LINE OUT/ the Headphones jack, etc.

-

42-

1

2

304+25+46

+6 dB

7

WOOFER

S-MODE

VOLUME +/–

AUDIO IN

VOLUME

PHONES

USB

USB/AUDIO IN

Headphone jack

AUDIO IN

R

USB

AUTO POWER

ON

CENTER

OFF

S-MODE indicator

SURROUND MODE

WOOFER LEVEL

-

6

-

42-

VOLUME

1

Subwoofer lebel

L

FRONT

12

2

304

+2

+6 dB

5+46

7

S-MODE

To wall outlet

WOOFER

S-MODE

Woofer

VOLUME

A

To USB port

Center (R)

Front (R)

Satellite speaker (R)

USB cable (supplied)

R

L

USB

FRONT

AUTO

POWER

ON

CENTER

OFF

Speaker cords

Hole for attaching the floor stand (not supplied)

To USB port

RL

Red

PurpleGreen White

To your computer

Subwoofer (this system)

Speaker cords

Center (L)

Front (L)

Hole for attaching the floor stand (not supplied)

Satellite speaker (L)

5

SS-US301/SW-US301/UZ-US301

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

3-1. DISASSEMBLY FLOW

Set

3-2. TOP CHASSIS

(Page 6)

SECTION 3

DISASSEMBLY

3-3. MAIN BOARD

(Page 7)

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

3-4. FRONT CABINET SECTION

(Page 7)

3-2. TOP CHASSIS

4

top chassis

3

three screws (BVTP3

×

10)

2

two case screws

1

two case screws

6

SS-US301/SW-US301/UZ-US301

)

6

Insert a flat-tip screwdriver into a recess in the bottom of the set to raise the front cabinet section a little.

7

Insert the jig (J-2051-238-A) into a space made by inserting the screwdriver, and raise the front cabinet section gradually.

8

front cabinet section

boss

1

wire (flat type) (23 core) (CN801)

2

screw (BVTP3

×

8)

5

screw (BVTP3

×

8)

4

screw (BVTP3

×

8)

3

harnness

Note : Take care not to damage the set by applying an excessive force.

3-3. MAIN BOARD

1

wire (flat type) (23 core) (CN801)

9

main board

4

connector (CN301)

5

connector (CN302)

2

screw (BVTP3

3

harness

×

8)

7

screw

8

screw (BVTP3

×

8)

6

(BVTP3

screw (BVTT3

×

10

×

8)

3-4. FRONT CABINET SECTION

7

SS-US301/SW-US301/UZ-US301

SECTION 4

TEST MODE

[TEST MODE]

Procedure:

1. While pressing the [S-MODE] button and the I/1 button, change over the [AUTO POWER] switch from OFF to ON.

2. All LED’s light up when the test mode is activated.

3. Press the [S-MODE] button to display the version. (The corresponding [VOLUME] LED will blink. (indicated in binary notation))

4. Press the [VOLUME +] button to increase the volume point, or the [VOLUME

5. Press the [WOOFER] button and the woofer le v el becomes settable, and then press the [VOLUME +] button to increase the woofer level by 2 dB (up to +6 dB), or press the [VOLUME

-

] button to reduce the woofer lev el by 2 dB (do wn to –6 dB).

(LED display will shift one step each time the button is pressed) Also, if the button is not pressed for 3 seconds, the volume indication comes back.

6. Other buttons execute their functions respectively. (For the APC (auto power control), the mode transits to APC mode unless the button is pressed for 5 seconds)

7. Press the I/1 button to turn it OFF, and the test mode is deactivated.

8. All settings become default values when the test mode is deactivated.

-

] button to decrease the volume point.

8

5-1. BLOCK DIAGRAM

J301

AUDIO IN

L

R-CHR

J501

2

D+

3

D–

USB

VBUS

4

USB CONTROL

SWITCH

Q501, 502

R-ch is omitted due to same as L-ch.

SIGNAL PATH

: AUDIO

: USB

CONVERTER

9

D+

8 D–

HOST28XTI1XTO

21

USB D/A

IC501

12MHz

VOUTL

VOUTR

X501

SS-US301/SW-US301/UZ-US301

SECTION 5

DIAGRAMS

MUTING

Q752

Q309

CONTROL SWITCH

+3.3V

IC502

+5.6V

IC392

RESET

SWITCH

Q801

R-CH

MUTING

Q310

MUTING

Q305, 306

IC903

MUTING

Q308

MAIN POWER

TRANSFORMER

RECT D909

RECT D911

RECT D914

CONTROL SWITCH

(US)

D804

D806

T901

(EXCEPT US)

SWITCHING

POWER ON/OFF

Q902, 906

RESET SIGNAL

GENETATOR

µCOM +5V

HEADPHONE

AMP

IC310

MUTING

DATA5CLK

CLK2

+5V

IC391

B+ SWITCH

Q391, 392

M

Q303

2OUT1

7OUT2

D394

+10V

REGULATOR

Q453

+3.3V

READY

+10V

DIG +10V

PRE AMP

IC308

PRE AMP

IC309

CONTROL SWITCH

B+ SWITCH

Q451, 452

B+ SWITCH

Q904, 905

MUTING

Q312, 313

REGULATOR

B+ SWITCH

Q909, 910

REGULATOR

1

H/P-MUTE

V-1 – V-4

V-5 – V-7

41X140

8.38MHz

H/P-S/W

X801

ELECTRICAL VOLUME

IC306

8 IN2

DATA5CLK

4

CLK1

DATA1

HIGH-PASS

FILTER

IC304

LOW-PASS

FILTER

IC305

DATA2

49VOL2-DATA

CLK2

50VOL2-CLK

59C-MUTE 51LINE-MUTE 48AMP-MUTE

46P-CON

47READY-H

36

RESET

43STOP

X2

7OUT2

HIGH-PASS

MUTING

CONTROL SWITCH

Q301

ELECTRICAL VOLUME

1 IN1

8 IN2

+5V

LED B+

POWER AMP

FILTER

IC303

IC307

4

DATA2

REGULATOR

FAN902

(FAN)

(IC401) B+

3D SOUND PROCESSOR

IC302

5

INPUT SELECTOR

IC301

8 9

6

Q802

R-CH

USB AMP

IC506

KEY1

27

26

S701 – 706

14 15

INT

44

KEY ACTIVE

SWITCH

KEY2

1011

12

INPUT SELECTOR

CONTROL SWITCH

APC-ON/OFF

58

S801

AUTO

POWER

OFF

ON

SURROUND MODE

Q508

LINE AMP

+

(POWER ON (GRN))

(STANDBY (RED))

Q506

INPUT SELECTOR

CONTROL SWITCH

Q304

55

USB-H

D702

USB

D703 – D706

D707 – D709

D711

1

2

D712

D507

BUFFER

IC505

+

33

D701

AUDIO-DET

LIN 17LOUT

SDA12SCL16STRB

13

R-CH

+

D506

R-CH

D509

56 57 54 2

S-DATA

SYSTEM CONTROLLER

IC801

LED DRIVE

Q710

LED DRIVE

Q701

LED DRIVE

Q702

LED DRIVE

Q707 – Q709

LED DRIVE

Q711

LED DRIVE

Q712

S-CLK

S-TRB

6COUT

CLK1

DATA1

53

54

VOL1-CLK

VOL1-DATA

5

16

15

14 – 11

8 – 6

4

3

GRN-LED

RED-LED

USB-LED

S-LOW

S-HIGH

J701

PHONES

POWER AMP

IC401

(US) (EXCEPT US)

MUTE

4

22

+20V

Q901

(EXCEPT US)

5

3

9

7

17

19

21

23

ST-BY

RECT D902

ISOLATOR

PC901

(US)

(EXCEPT US)

D393

D397

12

11R-CH

15

14

TH901

D906 D907

REGULATOR

(US)

IC902

(US)

IC802

D452

D451

D453

D454

LINE FILTER

LF901, 902

D905

+5.6V

REGULATOR

IC991

+

L

–

+

R

–

+

L

– +

R

–

(SUB WOOFER)

F901

(US)

(EXCEPT US)

3

D

4

VCC

1

FB/OCP

POWER CONTROL

IC901

RELAY DRIVE

Q991

RELAY DRIVE

Q992

D992 – 995

RECT

FRONT

CENTER

SP101

J404

SPEAKER

(US)

RY991

RY992

T902

SUB POWER

TRANSFORMER

TO SATELLITE

SPEAKER (L)/(R)

(SS-US301)

(AC IN)

99

SS-US301/SW-US301/UZ-US301

5-2. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Boards:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

f

•

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

Caution: Pattern face side: Parts on the pattern face side seen from (Conductor Side) the pattern face are indicated. Parts face side: Parts on the par ts face side seen from (Component Side) the parts face are indicated.

• Indication of transistor.

: internal component.

C Q

B

E

B

These are omitted.

Q

CE

These are omitted.

Note on Schematic Diagram:

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

• All resistors are in Ω and 1/ specified.

f

•

• 2 : nonflammable resistor.

• C : panel designation.

Note: The components identified by mark 0 or dotted line

• A : B+ Line.

•Voltages and waveforms are dc with respect to ground

•Voltages are taken with a V OM (Input impedance 10 MΩ).

•Waveforms are taken with a oscilloscope.

• Circled numbers refer to waveforms.

• Signal path.

: internal component.

with mark 0 are critical for safety. Replace only with part number specified.

under no-signal conditions. no mark : AUDIO (): USB

Voltage variations may be noted due to normal production tolerances.

F : AUDIO N : USB

4

W or less unless otherwise

•Waveform – MAIN Board –

1 IC801 r; (X2)

4 Vp-p

119 ns

1010

• IC Block Diagrams – MAIN Board –

IC302 QS7779CM-G-E2

SS-US301/SW-US301/UZ-US301

IC501 PCM2704DBR

QXAC3 QXAC2 QXAC1

RIN LIN

COUT

CIN

VREFIN

VREFOUT

VREF

GND

SPRD (SCL)

QXAC4

1 2 3

4 5

DECODER

SURROUND

6

7

8

9

10

11

12

QXPANDER

Q1

VIRTUALIZATION

MULTIPLEX/ LEVELSHIFT

∑

SERIAL I/O

24

VCC

23

QXBC1

22

QXBC2

21

QXBC3

20

QXBC4

19

ROUT

18

LOUT

17

MUTE (STRB)

16

VDD

15

P/S

14

BYP (SDA)

13

VCCP

XTI

28

PLL

(X8)

1

XTO

TRACKER

(SPACT)

27

POWER

MANAGER

ANALOG PLL

SSPND

26

HID

ENDPOINT

EEPROM

INTERFACE

2CK3DT4

TEST0

25

22

23

24

SPI

INTERFACE

CONTROL

ENDPOINT

USB PROTOCOL

CONTROLLER

5

PSEL

DOUT

21

6

DGND

ISO-OUT

ENDPOINT

USB SIE

7

VDD

XCVR

8D–9

FIFO

S/PDIF

ENCODER

D+

HOST

HID0/MS

HID1/MC

HID2/MD

TEST1

20

PGND19VCOM

18

10

VBUS

AGNDR

16

17

5V TO 3.3V

VOLTAGE

REGULATOR

13

11

12

ZGND

AGNDL

VCCR

CONVERTER

VCCL

D/A

VOUTR

15

14

VOUTL

IC306, 307 M62429P

VR1

VR2

VIN2

8

VOL AMP 2

VOL AMP 1

1

VIN1

VOUT2

7

+ –

REF AMP

+ –

– +

2

VOUT1

VREF

– AMP Board –

IC901 STR-F6424 (US Model)

O.C.P/F.B

1

VCC

6

3

GND

CLOCK

5

LOGIC

CONTROL

4

DATA

VIN

GND

S

2

DRIVE

D

3

LATCH

O.V.P

4

START REG.

5

O.S.C

T.S . D

IC901 STR-F6676 (Except US Model)

O.C.P/F.B

1

S

2

DRIVE

O.S.C

T.S . D

VIN

GND

D

3

LATCH

O.V.P

4

START REG. ICONST

5

1111

SS-US301/SW-US301/UZ-US301

5-3. PRINTED WIRING BOARD – MAIN Board – :Uses unleaded solder.

• Semiconductor Location

Ref. No. Location

D391 M-15 D393 D-15 D394 L-15 D397 D-14 D506 F-4 D507 F-4 D508 I-4 D509 I-3 D802 D-13 D803 K-12 D804 D-14 D805 K-15 D806 L-15 DZ502 N-6

IC301 C-6 IC302 E-7 IC303 E-8 IC304 D-8 IC305 B-8 IC306 K-9 IC307 M-9 IC308 K-10 IC309 M-10 IC310 F-11 IC391 L-13 IC392 M-15 IC501 D-4 IC502 M-5 IC505 F-5 IC506 E-4 IC801 F-13 IC802 L-12

Q301 J-14 Q302 I-10 Q303 I-10 Q304 K-6 Q305 E-12 Q306 E-11 Q307 K-11 Q308 L-12 Q309 L-12 Q310 M-12 Q312 D-11 Q313 K-12 Q391 L-16 Q392 M-16 Q501 B-3 Q502 C-3 Q506 B-5 Q507 B-4 Q508 K-7 Q801 D-12 Q802 K-12

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

A

B

C

D

E

MAIN BOARD

Q501

Q502

R506

R502

C506

(EXCEPT US)

F

G

H

I

D509

C523

J301

S801

AUTO

POWER

OFF

ON

124

3

L

R

S801

C532

R304

C533

C520

FB504

FB503

FB502

R301

R302

R305

-1 -2

FB303

J

K

J501

USB

ONLY 2ch

SOURCE

L

M

AUDIO IN

N

(COMPONENT SIDE)

E

IC501

R507

1

R537

R503

14

C511

R529

C513

R519

R528

R510

R513

IC506

1

R512

C515

4

C528

R525

R523

MAIN BOARD

C522

R527

D508

R511

R538

FB501

R509

C512

R504

R505

C303

C505

R303

C304

R306

R535

Q507

E

R534

28

C510

15

R518

C514

C531

R515

R514

R516

8

5

D506

D507

1

C526

4

(CONDUCTOR SIDE)

R531

R530

R539

FB507

C519

C509

FB505

X501

C507

C525

R524 C527

FB506

R522

R508

R517

C517

R526

8

IC505

5

C518

3

1

C524

R536

R521

C516

C501

C503

IC502

C521

C316

C315

Q506

R334

E

FB302

C529

R307

R350

8

14

R367

R370

C308

R308

R365

C307

C306

7

1

IC301

1

C312

R311

12

IC302

C324

C397

R310

E

Q304

C300

R366

R368

R533

C317

C305

DZ502

C395

Q508

R369

FB301

C311

C327

24

13

C396

E

C313

C314

C318

R313

R312

C336

C321

R329

R324

C323

C332

R330

14

R328

IC305

R327

85

C350

14

R325

IC304

85

R321

R319

R316

R335

R336

R333

C329

R317

C322

R315

R314

R320

R322

C333

14

IC303

85

C328

R318

(EXCEPT US)

C326

R345

C331

C343

C346

R323

IC307

C334

C342

C348

C351

R342

Q302

C302

R309

R344

C344

R339

IC306

14

C337

85

R338

R340

14

85 R341

FB304

C335

R346

C352

C345

C349

IC309

(EXCEPT US)

C392

C366

C355

C367

E

R348

C301

R352

C354

IC308

4

C358

R361

R343

(EXCEPT US)

IC310

Q303

R347

1

85

R349

R355

C359

14

85

C347

C369

(EXCEPT US)

C370

R385

C383

E

C381

C353

R351

R353

R356

R354

R358

R357

R359

R362

R360

C360

Q312

C382

C384

R388

C356

C357

R363

(EXCEPT US)

FB305

31

CN801

FB807

FB808

(EXCEPT US)

D394

C394

Q392

E

R882

R827

R826

1-860-898-12(12)

R814

R816

E

Q391

R396

R395

1-860-898-

(Page 16)

(12)

C

DISPLAY

BOARD

CN701

12

FB311

R849

C805

Q801

R836

R846

R848

X801

CN301

R875

R874

C804

E

R850

R851

R871

D803

13

C378

C376

A2

(Page 20)

D802

C803

R834

33

48

R844

R872

C806

FB313

AMP BOARD

CNP401

R853

FB802

13

FB308

R878

R877

R839

8

C375

IC801

R856

R854

R855

R876

C391

(EXCEPT US)

CN802

R858

R857

AAKAA

D804

D397

R391

C310

(US)

E

Q301

R390

(EXCEPT US)

FB307

C802

C809

+

C808

D806

C393

D393

D391

K

R397

FB804

(FOR CHECK)

1732

16

1

6449

C807

FB801

(EXCEPT US)

R392

C330

IC392

CN302

AMP BOARD

B1

(Page 18)

(US) (EXCEPT US)

CNP423

B2

(Page 20)

R815

R813

R811

R807

R805

R803

R801

R802

R804

R806

R808

R812

R810

D805

FB806

R398

(US)

AMP BOARD

CNP423

FB306

R399

C374

C373

C371

E

Q306

R383

14

85

C386

C385

R371

E

Q307

R372

R375

R376

R379

R378

R377

C362

C361

R364

C365

C363

R382

R380

C372

R374

R373

R843

EE

Q305

R384

R386

R387

R847

R852

R840

R833

Q313

E

Q802

E

Q309

C368

R873

E

Q308

IC802

FB309

(EXCEPT US)

IC391

FB310

1

FB312

C377

E

Q310

R381

AMP BOARD

A1

CNP401

(Page 18)

(US) (EXCEPT US)

R326

C319

C320

R332

R331

C325

R337

C338

C340

1212

Aiwa SS-US301, SW-US301, UZ-US301 Service Manual

TABLE OF CONTENTS

SERVICING NOTE

GENERAL

3-1. DISASSEMBLY FLOW

DISASSEMBLY

top chassis

front cabinet section

main board

TEST MODE

5-1. BLOCK DIAGRAM

DIAGRAMS

5-2. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

5-3. PRINTED WIRING BOARD – MAIN Board – :Uses unleaded solder.