Onkyo HTP-670 Service Manual

SERVICE MANUAL

SERVICE MANUAL

7.1-CH HOME THEATER SPEAKER PACKAGE

HTP-670

Ref. No. 4157

072009

Front Speakers (L / R)

"SKF-670"

Center Speaker

"SKC-670"

MODEL

Surround Speakers (L / R)

HTP-670(B)

"SKR-670"

Black model

B MDC
B MMO

120V AC, 60Hz
220-240V AC, 50/60Hz

Powered Subwoofer

"SKW-770"

Surround Back Speakers (L / R)

"SKB-670"

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.

ADJUSTMENT PROCEDURE

SKW-770 : POWERED SUBWOOFER / ADJUSTMENT OF IDLING CURRENT

[When]

1. Exchange transistors (Q505 - Q519).

2. Exchange MAIN PC board ass'y (NAAF-8829).

[Procedure]

<Note> No speaker load and No input signal.

1. Short test point P631 for amplifier is under active mode.

2. Adjust the trimming resistor R544 so that the reading of multimeter becomes 52 ohm to 53 ohm.

3. Connect the DC voltmeter to test point P531. <Fig-1>

4. Connect the power cord into the AC outlet.

5. Press POWER button to turn on the unit. (MMO version)

6. Confirm the voltage of above point after 6 minutes to 8 minutes. (Heat running)

7. When less than 3.20 mV : Readjust the trimming resistor above so that the voltage becomes 4.5 mV to 5.0 mV.
When 3.30 mV to 5.20 mV : Not necessary to adjust.
When 5.21 mV to 10.0 mV : Readjust the trimming resistor above so that the voltage becomes 5.0 mV to 5.5 mV.
When 10.1 mV to 20.0 mV : Readjust the trimming resistor above so that the voltage becomes 5.6 mV to 6.0 mV.

8. Disconnect the power cord from the AC outlet.

9. Disconnect the DC voltmeter.

HTP-670

Trimming resistor

R544

Test point

P531

Test point

P531

100 ohm

(1/4W)

<Fig-1>

DC voltmeter

MAIN PC board ass'y "NAAF-8829"

Test point

P631

Short

EXPLODED VIEWS-1

SKW-770(MDC) : POWERED SUBWOOFER

P901

A05

x 2 pcs.

A102

A103

SP11

x 10 pcs.

A02

HTP-670

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

See "EXPLODED VIEWS-3"

SP12

x 4 pcs.

SP13

x 2 pcs.

U03

HTP-670

T901

F901

EXPLODED VIEWS-2

SKW-770(MMO) : POWERED SUBWOOFER

P901

HTP-670

S901

A102

A103

A104

P901a

Refer to "PACKING PROCEDURE
PARTS LIST"
(Service manual of "HT-S6200")

x 2 pcs.

A05

x 2 pcs.

A02

SP11

x 10 pcs.

A02

A03

A06

U01

A05

x 5 pcs.

U06

A101

A07

Q516

A08

x 2 pcs.

A05

Q541

A01

A07

A11

Q515

E801

U05

See "EXPLODED VIEWS-3"

SP12

x 4 pcs.

<Note>

F901C : Part No. of LABEL

---> See "PRINTED CIRCUIT BOARD PARTS LIST".

SP13

x 2 pcs.

F901C

U03

HTP-670

T901

F901

HTP-670

EXPLODED VIEWS-3

SKW-770 : POWERED SUBWOOFER

SP01a/b (Subwoofer ass’y)

(All)

SP01c/d (Subwoofer ass’y)
(Without AMP unit, Speaker unit and Power transformer)

SP08

SP06

SP07

x 6 pcs.

SP02

x 4 pcs.

HTP-670

SP04

x 4 pcs.

EXPLODED VIEWS-4

SKF-670 / SKC-670 / SKR-670 / SKB-670

SP20a/b SP21a/b

HTP-670

<Note>

Cannot remove the speaker grill.

SP22a/b

TERMINAL :
Blue / Black

TERMINAL :
White / Black

"SKF-670 <L>" "SKF-670 <R>"

SP23a/b SP24a/b

TERMINAL :
Red / Black

NOT MAGNETICALLY SHIELDED

TERMINAL :
Gray / Black

"SKR-670 <R>""SKR-670 <L>"

TERMINAL :
Brown / Black

TERMINAL :
Green / Black

"SKC-670"

NOT MAGNETICALLY SHIELDED

SP25a/b SP26a/b

TERMINAL :
Tan / Black

HTP-670

"SKB-670 <R>""SKB-670 <L>"

NOT MAGNETICALLY SHIELDEDNOT MAGNETICALLY SHIELDED

HTP-670

A

BCDEFGH

SCHEMATIC DIAGRAM

SKW-770(MDC/MMO) : POWERED SUBWOOFER

1

2

3

LINE INPUT

P301

C955

223J

E801

R301

1K

C301

C951

220/16

C952

220/16

224

R302

(MMO)

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

47K

R307

2.2K

R306

1

P501B

NC

J316

C502

(1/2W)

12K

1SS133

NC

R651

D651

C501

47/50

C527
1/50

R501

1K

R502

47K

R510

100K

U01

R505

1K

(1/4W)

Q501

2SC2240-BL
0

C503
224J

R521

220

D501

MTZJ5.6B

MAIN PC BOARD

R506

1K

(1/4W)

2SA949-Y

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)

2SA949-Y

R511

82

(1/4W)

Q505

Q507

NAAF-8829

Q509

2SA949-Y

070

2SC2229-Y

Q506

2SC2229-Y

R512

68

(1/4W)

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

<Note>

NC : No mount of parts.

Q518

2SC2235-Y

1.6V

Q517

2SA933S-S

C517

10/50

10/50

C528

R543

180

-1.6

Q519

2SA965-Y

C514

101

R528

390

(1/2W)

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

NOTE

THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
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.

!

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.

SPEAKER

JL535A/B

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.

U03

POWER TRANSFORMER
PC BOARD

MMO

T901
NPT-1588M

P901A

NAPS-8831

1.6A/250V
F901

P907A

P906A

POWER SWITCH

U05

PC BOARD

P906B

S901

NASW-8833

MMO

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

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(MMO)

5600/63(MDC)

C906

5600/71(MMO)

5600/63(MDC)

C903

C904

104J/100

(MMO TYPE)

P903A

104J/100

(MMO TYPE)

P902A

POWER TRANSFORMER

U03

PC BOARD

MDC
ONLY

T901

NPT-1578D

P901A

NAPS-8831

5A/125V

F901

J901

MD

P902A

P901

AC 220-240V 50/60Hz

P901

AC 120V / 60Hz

LED