Onkyo SKW-750-X, HTP-750-X Service Manual

SERVICE MANUAL

SERVICE MANUAL

7.1-CH HOME THEATER SPEAKER PACKAGE

HTP-750X

Ref. No. 4105

072008

Surround Back Speakers (L / R)

"SKB-750X"

MODEL HTP-750X(B)

Center Speaker
"SKC-750XC"

Front Speakers (L / R)

"SKF-750XF"

Black model

B MDD

120V AC, 60Hz

Surround Speakers (L / R)

"SKM-750XS"

Powered Subwoofer

"SKW-750X"

SAFETY-RELATED COMPONENT
WARNING!!

COMPONENTS IDENTIFIED BY MARK ON THE

SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE

CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.

REPLACE THESE COMPONENTS WITH ONKYO

PARTS WHOSE PART NUMBERS APPEAR AS SHOWN

IN THIS MANUAL.

MAKE LEAKAGE-CURRENT OR RESISTANCE

MEASUREMENTS TO DETERMINE THAT EXPOSED

PARTS ARE ACCEPTABLY INSULATED FROM THE

SUPPLY CIRCUIT BEFORE RETURNING THE

APPLIANCE TO THE CUSTOMER.

EXPLODED VIEWS-1

SKW-750X : POWERED SUBWOOFER

P901

A05

x 2 pcs.

A102

A103

SP11

x 10 pcs.

HTP-750X

A02

A104

x 2 pcs.

A02

A03

A06

U01

A05

x 5 pcs.

U06

A101

A07

Q516

A08

x 2 pcs.

A05

Q541

A01

A07

A11

Q515

E801

Refer to "EXPLODED VIEWS-2"

SP12

x 4 pcs.

SP13

x 2 pcs.

U03

HTP-750X

T901

F901

HTP-750X

EXPLODED VIEWS-2

SKW-750X : POWERED SUBWOOFER

SP01a (Subwoofer ass’y)

(All)

SP01b (Subwoofer ass’y)
(Without AMP unit, Speaker unit and Power transformer)

SP08

SP06

SP07

x 6 pcs.

SP02

x 4 pcs.

HTP-750X

SP04

x 4 pcs.

EXPLODED VIEWS-3

SKF-750XF / SKC-750XC / SKM-750XS / SKB-750X

HTP-750X

SP22

TERMINAL :
White / Black

"SKF-750XF <L>"

SP42

SP21

SP41

SP24

TERMINAL :
Red / Black

SP23

"SKF-750XF <R>"

SP43

SP44

TERMINAL :
Green / Black

SP52

SP32

SP31

"SKC-750XC"

SP51

<Note>

Cannot remove the speaker grill.

SP53

SP54

TERMINAL :
Blue / Black

"SKM-750XS <L>"

TERMINAL :
Gray / Black

"SKM-750XS <R>"

TERMINAL :
Brown / Black

"SKB-750X <L>"

TERMINAL :
Tan / Black

HTP-750X

"SKB-750X <R>"

EXPLODED VIEWS-4

AS-140 (for HT-S7100)

PIPE ASSY

BASE STAND COVER

HTP-750X

BASE PLATE ASSY

ST61a

AS-140 (for HT-S7100)
PIPE ASSY = with the speaker cables wired

ST61b

ST63

x 2 pcs.

BASE

--Bottom view--

ST64

x 2 pcs.

ST65

x 2 pcs.

ST66

x 8 pcs.

HTP-750X

HTP-750X

A

SCHEMATIC DIAGRAM

SKW-750X : POWERED SUBWOOFER

1

2

3

LINE INPUT

P301

C955

223J

E801

R301

1K

C301

C951

220/16

C952

220/16

224

R302

(MPP)

OUTPUT
LEVEL

C302
47/50

20KB

47K

R951

3.3K

POWER NEED TO CONFIRM

D951

MTZJ15C

D952

R952

MTZJ15C

(2W)

3.3K

R303

(2W)

3

2

27K

R304

Q301(1/2)
NJM4558LD

8

4
R305

33K

C303

NC

BCDEFGH

NOTE

THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY

NAAF-8829

MAIN PC BOARD

U01

47K

R307

2.2K

R306

J316

<Note>

1

REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.

NC : No mount of parts.

CAUTION

FOR CONTINUED PROTECTION
AGAINST FIRE HAZARD, REPLACE
ONLY WITH FUSE OF SAME TYPE

VA

AND RATING INDICATED.

ATTENTION

AFIN D'ASSURER UNE PROTECTION
PERMANENTE CONTRE LES RISQUES
D'INCENDIE, REMPLACER UNIQUEMENT

VA

PAR UN FUSIBLE DE MEME TYPE
ET CALIBRATION COMME INDIQUE.

THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW OPERATING TYPE
FOR CONTINUED PROTECTION AGAINST FIRE
HAZARD,REPLACE WITH SAME TYPE FUSE. FOR FUSE
RATING REFER TO THE MARKING ADJACENT TO THE SYMBOL.

CE SYMBOLE INDIQUE QUE LE FUSIBLE UTLISE EST
E LENT.POUR UNE PROTECTION PERMANENTE,N'UTILISER
QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.

P501B

NC

C502

NC

(1/2W)

R651

12K

D651

1SS133

C501

47/50

C527
1/50

R501

1K

R502

47K

R510

100K

R505

1K

(1/4W)

Q501

2SC2240-BL
0

C503
224J

R521

220

D501

MTZJ5.6B

R506

1K

(1/4W)

Q502
2SC2240-BL

-0.6

R522

220

R503

5.6K

Q503

2SC2240-BL

R504

2.2K

R509

1K

R527
270

C504
220/16

C505

020

R507

33K

0

R508

47

(1/4W)

R511

82

(1/4W)

Q505

2SA949-Y

Q507

2SA949-Y

2SA949-Y

070

2SC2229-Y

Q506

2SC2229-Y

R512

68

(1/4W)

Q509

C506

R515

12K

R516

12K

Q510

R513

82
(1/4W)

R514

82

R541

820

R542

150

R544

100B

ADJUST.
IDLING

(1/4W)

R517

3.3K
1

-1

Q541

2SC3423

Q517

2SA933S-S

R543

180

-1.6

C517

10/50

C514

101

Q518

2SC2235-Y

1.6V

C528

Q519

2SA965-Y

(1/2W)

10/50

R528

390

C526

10/50

Q513

2SC5171

Q514

2SA1930

Q515

R526

82

(1/2W)

R531

0.22
(5W)

2SA1987-O/R

Q516

2SC5359-O/R

R533

3.3
(1W)

C519

224

C520

224

P531

SPEAKER

JL535A/B

!

4

5

10/50

5.6K

C601

R601

100K

Q301(2/2)
NJM4558LD

5

6

D601
MTZJ2.7B

180

R602

R604

C602

10/50

8

4

R603

150K

7

D602

MTZJ2.7B

D603

1SS133

R605

22

C603

470/16

P633

39K

R609

NC

Q602
KRC103M

R610

560K

820K

120K

R614

39K

R611

R612

Q603

2SC1740S-S

470K

R613

D605

1SS133

C950

104/50

Q604

2SA933S

R617

1K

R615

22K

R619

22K

R620

100K

R616

100K

D607

1SS133

Q605

2SA933S

R621

1K

P632A

REDBLUE

Q606

KRA103M

P631

2SA933S

Q607

R622

10K

5.0

R624
100K

R623

100K

Q608

2SC1740S-S

R626

2.2M

0.05

0.6

R625
180K

R627
680K

C604

33/35

Q609

NC

D606

1SS133

R628

330K

R629

NC

R701

NC

+5.6V

R904

1K

(1/2W)

10K

D904

MTZJ5.6B

R903

820

820

C909
22/50

R901

(1W)

R902

(1W)

-56.5V

D902
RL1N4003
or GP104003E

D903
RL1N4003
or GP104003E

+56.5V

D901

D3SBA20

C905

5600/71(MPP)

5600/63(MDD)

C906

5600/71(MPP)

5600/63(MDD)

C903

C904

104J/100

(MPP TYPE)

104J/100

(MPP TYPE)

U03

P903A

POWER TRANSFORMER
PC BOARD

MDD
ONLY

T901

NPT-1578D

P901A

NAPS-8831

5A/125V

F901

J901

MD

P902A

P901

AC 120V / 60Hz

LED

HTP-750X

A

PRINTED CIRCUIT BOARD VIEWS-1

SKW-750X : POWERED SUBWOOFER

1

2

3

4

MAIN PC BOARD (NAAF-8829)U01

Component side

NCAF-8829

1

BCE

J308

Q515

22

J323

B

CE

17

Q541

+Vcc

J334

C906

CEB

25

Q516

E701

R701

25138829A

J307

J314

J324

12

R531

C519

R533

D951

C951

J955

R952

7

C952

D952

P301

C955

R545

R544

P531

J325

J332

7

C906

D902

R526

-Vee

J956

P301

Q513

Q514

R508

J322

7

C526

J320

C520

J352

R901

BCD

R543

R542

J306

ECB

ECB

R514

Q510

Q506

Q507

J321

J340

7

C903 C904

RED REDBLK

R902

15

+Vcc

20

R951

R301

C301

R512

JL535B

RED

J330

J333

J331

17

P903A

D903

C527

15

R528

C528

J312

7

BLACK

17

C909

R517
Q517
Q518

R541

12

J311

J313

J319

JL535A

D901

R302

R510

J303

J304

C514

R516

C502

J351

R904

D501

J305

Q519

R515

C504

R903

D904

C517

P502A

12

Q504

R507

R527

C905

R513

C505

R509

C503

R502

R628

R629

J346

D606

R627

R504

Q502

C604

R625

R522

J347

Q609

R651

Q503

C506

R503

R501

C501

C905

C950

J310

R321

R302

Q505

Q501

20

7

Q604

R623

R624

R626

Q608

Q509

R521

J318

R619

Q606

D651

R511

R505

R506

J338

R615

Q607

7

7

J316

J326
J329

J348

J302

J349

J350

7

Q303

7654 3218

J301

7

Q302

R304

R303

J327

R617

R611

Q603

R622

C302

81234567

R306

R307

C303

R305

7

R610

R616

J341

7

Q301

R621

P632A

C313

R316

R312

R314

C311

R315

J309

J337

C316

R320

R319

R317

C314

C312

E801

R609

7

P631

J344

C315

R313

1

2345 678

Q602

P911

C601

R601

R602
C602

R604

R603

D601

D602

D603

R605

C603

P633

Q605
R620

D605

R614

R613

R612

J342

P912

J335

P301A

R311

J336

5