Onkyo HTP-555 Service Manual

SERVICE MANUAL

SERVICE MANUAL

5.1-CH HOME THEATER SPEAKER PACKAGE

HTP-555

Ref. No. 4114

102008

MODEL HTP-555(B)

Front Speakers (L / R)

"SKF-550"

Center Speaker

"SKC-550"

Surround Speakers (L / R)

Black model

B MDD

120V AC, 60Hz

Powered Subwoofer

"SKW-550"

"SKR-550"

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.

SERVICE NOTE

MODEL

HTP-555

2007

HT-SR800 (7.1ch Home Theater System)

HTP-550 (7.1ch Speaker System)

SKF-550F : Front Speakers <L/R>

SKC-550C : Center Speaker

SKM-550S : Surround Speakers <L/R>

SKB-550 : Surround Back Speakers <L/R>

SKW-550 : Powered Subwoofer

<Note>

SKR-550 is exactly the same as SKM-550S except Back Labels showing these model names.
In the same way, SKF-550F & SKF-550 and SKC-550C & SKC-550 are respectively the same.
They can be used interchangeably as far as you are not concerned about model names.

2008

AVX-760LD (5.1ch Home Theater System)

HTP-555 (5.1ch Speaker System)

SKF-550 : Front Speakers <L/R>

SKC-550 : Center Speaker

SKR-550 : Surround Speakers <L/R>

---

SKW-550 : Powered Subwoofer

EXPLODED VIEWS-1

SKW-550 : POWERED SUBWOOFER

P901

A05

x 2 pcs.

A102

A103

SP11

x 10 pcs.

HTP-555

A02

A104

x 2 pcs.

A02

A03

A06

U01

A05

x 5 pcs.

U06

A101

A07

Q516

Q541

A01

A08

x 2 pcs.

A05

Q515

A07

A11

E801

Refer to "EXPLODED VIEWS-2"

SP12

x 4 pcs.

SP13

x 2 pcs.

U03

HTP-555

T901

F901

HTP-555

EXPLODED VIEWS-2

SKW-550 : POWERED SUBWOOFER

SP01a : SPK SYSTEM ASS’Y (All)

SP01b : CABINET ASS’Y

(Without AMP unit, Speaker unit and Power transformer)

SP08

SP06

SP07

x 6 pcs.

SP04

x 4 pcs.

SP02

x 4 pcs.

HTP-555

EXPLODED VIEWS-3

SKF-550 <L> / SKF-550 <R>
(for HTP-555)

SP33a / SP33b

SP32a / SP32b

HTP-555

SP21a / SP21b : SPK SYSTEM ASS’Y (ALL)

SP23

Lch
TERMINAL :
White / Black

Rch
TERMINAL :
Red / Black

SP23

SP24

SP22

x 4 pcs.

SP34

HTP-555

EXPLODED VIEWS-4

SKC-550
(for HTP-555)

SP53

SP52

TERMINAL :
Green / Black

HTP-555

SP41 : SPK SYSTEM ASS’Y (ALL)

SP43

SP43

SP42

x 4 pcs.

SP44

HTP-555

SP54

EXPLODED VIEWS-5

SKR-550 <L> / SKR-550 <R>
(for HTP-555)

SP61 SP63

HTP-555

SP64SP62

TERMINAL :
Blue / Black

<Note>

Cannot remove the speaker grill.

TERMINAL :
Gray / Black

"SKR-550 <R>""SKR-550 <L>"

HTP-555

HTP-555

A

SCHEMATIC DIAGRAM

SKW-550 : 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

R304

Q301(1/2)
NJM4558LD
8

4

R305

33K

27K

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.

POWER TRANSFORMER
PC BOARD

MPA
ONLY

T901
NPT-1539P

P901A

NAPS-8831

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

U03

!

1.6A/250V
F901

P907A

P906A

POWER SWITCH

U05

PC BOARD

NASW-8833

MPA ONLY

P906B

S901

POWER
SWITCH

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

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

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(MPA)

5600/63(MDD)

C906

5600/71(MPA)

5600/63(MDD)

C903

C904

104J/100

(MPA TYPE)

104J/100

(MPA TYPE)

U03

P903A

P902A

POWER TRANSFORMER
PC BOARD

MDD/MDC
ONLY

T901

NPT-1539D-1562D

P901A

NAPS-8831

5A/125V

F901

J901

MD

P902A

P901

AC 230-240V / 50Hz

P901

AC 120V / 60Hz

LED