Onkyo SKW-750 Service Manual

SERVICE MANUAL

7.1-CH HOME THEATER SPEAKER PACKAGE

HTP-750

Ref. No. 4033

092007

Surround Back Speakers (L / R)

"SKB-750"

MODEL HTP-750(B)

Center Speaker

"SKC-750C"

Front Speakers (L / R)

"SKF-750F"

Black model

B MDD

120V AC, 60Hz

Surround Speakers (L / R)

"SKM-750S"

Powered Subwoofer

"SKW-750"

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-750 : POWERED SUBWOOFER

P901

A05

x 2 pcs.

A102

A103

HTP-750

SP11

x 10 pcs.

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-750

T901

F901

EXPLODED VIEWS-2

SKW-750 : POWERED SUBWOOFER

HTP-750

SP01

SP08

SP06

SP07

x 6 pcs.

SP02

x 4 pcs.

HTP-750

SP04

x 4 pcs.

EXPLODED VIEWS-3

SKF-750F / SKC-750C / SKM-750S / SKB-750

HTP-750

SP22

TERMINAL : White / Black

"SKF-750F <L>"

SP42

SP21

SP41

SP24

TERMINAL : Red / Black

SP23

"SKF-750F <R>"

SP44

SP43

TERMINAL : Green / Black

SP52

SP32

SP31

"SKC-750C"

SP51

<Note>

Cannot remove the speaker grill.

SP53

SP54

TERMINAL : Blue / Black

"SKM-750S <L>"

TERMINAL : Gray / Black

"SKM-750S <R>"

TERMINAL : Brown / Black

"SKB-750 <L>"

TERMINAL : Tan / Black

HTP-750

"SKB-750 <R>"

HTP-750

A

SCHEMATIC DIAGRAM

SKW-750 : POWERED SUBWOOFER

1

2

3

LINE INPUT

P301

C955

223J

E801

R301

1K

C301

C951

220/16

C952

220/16

224

R302

(MPA)

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

4

R305

33K

8

C303

NC

BCDEFGH

NAAF-8829

MAIN PC BOARD

U01

47K

R307

2.2K

R306

P501B

NC

J316

C502

(1/2W)

12K

1SS133

NC

R651

D651

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

070

2SC2229-Y

Q506

2SC2229-Y

R512

68

(1/4W)

Q509

C506

R515

12K

R516

12K

Q510

R513

82 (1/4W)

R514

82

1

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

R616

100K

22K

R620

100K

Q605

2SA933S

R621

1K

P632A

REDGREEN

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

LED