Onkyo SKS-HT425 Service Manual

SKS-HT425

SERVICE MANUAL

SERVICE MANUAL

5.1CH HOME THEATER SPEAKER PACKAGE

Gray model

MODEL SKS-HT425(GY)

120V AC, 60HzMDD

Ref. No. 3840

092004

Front Speakers (L / R)

"SKF-425F"

Center Speaker

"SKC-425C"

Surround Speakers (L / R)

"SKM-425S"

Powered Subwoofer

"SKW-420"

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.

SPECIFICATIONS

SKS-HT425

Type :
Input sensitivity/impedance :
Maximum output power :
Frequency response :
Cabinet capacity :
Dimensions (W x H x D) :

Weight :
Speaker :
Power supply :
Power consumption :
Other :

Powered Bass-reflex

220 mV / 15 k ohm

150 W (Dynamic Power)

30 Hz - 150 Hz

1.15 cubic feet (32.5 Litter)

9-1/4" x 20-3/8" x 16-3/16"

(235 x 518 x 411 mm)

28.2 lbs. (12.8 kg)

8 inch Cone

AC 120 V, 60 Hz

75 W

Auto-standby function

Front Speaker (SKF-425F)

Type :
Impedance :
Maximum input power :
Output sound pressure level :
Frequency response :
Crossover frequency :
Cabinet capacity :
Dimensions (W x H x D) :

Weight :
Speaker :
Woofer :
Tweeter :
Terminal :
Other :

2 Way Bass-reflex

8 ohm

100 W

76 dB/W/m

70 Hz - 50 kHz

4.5 kHz

0.042 cubic feet (1.2 Litter)

4" x 6-5/8" x 5-3/8"

(101 x 169 x 136 mm)

2.6 lbs. (1.2 kg)

3-1/8 inch Cone

1 inch Balanced Dome

Spring type Color coded

Magnetic shielding

Type :
Impedance :
Maximum input power :
Output sound pressure level :
Frequency response :
Crossover frequency :
Cabinet capacity :
Dimensions (W x H x D) :

Weight :
Speaker :
Woofer :
Tweeter :
Terminal :
Other :

2 Way Bass-reflex

8 ohm

100 W

78 dB/W/m

70 Hz - 50 kHz

4.5 kHz

0.067 cubic feet (1.9 Litter)

10-3/8" x 3-3/4" x 5-3/8"

(264 x 96 x 136 mm)

4.4 lbs. (2.0 kg)

3-1/8 inch Cone x 2

1 inch Balanced Dome

Spring type Color coded

Magnetic shielding

Surround Speaker (SKM-425S)

Type :
Impedance :
Maximum input power :
Output sound pressure level :
Frequency response :
Crossover frequency :
Cabinet capacity :
Dimensions (W x H x D) :

Weight :
Speaker :
Woofer :
Tweeter :
Terminal :

2 Way Bass-reflex

8 ohm

100 W

79 dB/W/m

70 Hz - 30 kHz

10 kHz

0.042 cubic feet (1.2 Litter)

4" x 6-5/8" x 5-3/8"

(101 x 169 x 136 mm)

1.8 lbs. (0.8 kg)

3-1/8 inch Cone

3/4 inch Ceramic

Spring type Color coded

Specifications and appearance are subject to change

without prior notice.

Powered Subwoofer (SKW-420) Center Speaker (SKC-425C)

SKS-HT425

SKS-HT425

EXPLODED VIEW

SKF-425F / SKC-425C / SKM-425S

SP13

SP10 SP12

SP17 SP19

SP16 SP18

SP14

SP15

SP11

"SKF-425F <L>" "SKF-425F <R>"

"SKC-425C"

"SKM-425S <R>""SKM-425S <L>"

TERMINAL :
White / Black

TERMINAL :
Red / Black

TERMINAL :
Green / Black

TERMINAL :
Blue / Black

TERMINAL :
Gray / Black

NOT MAGNETICALLY SHIELDED NOT MAGNETICALLY SHIELDED

<Note>

SKW-420 ---> Refer to service manual of "HTP-420" (Ref. No. : 3808).

SKS-HT425

PACKING PROCEDURE

SKS-HT425

L = 15 ft.
(22# 4.5 m)
(White / Black)

L = 15 ft.
(22# 4.5 m)
(Red / Black)

L = 30 ft.
(22# 9 m)
(Blue / Black)

L = 10 ft.
(22# 3 m)
(Green / Black)

L = 10 ft.
(3 m)
(Black / RCA)

L = 30 ft.
(22# 9 m)
(Gray / Black)

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SKS-HT425

EXPLODED VIEW PARTS LIS

NOTE : THE COMPONENTS IDENTIFIED BY THE MARK

! ARE CRITICAL FOR RISK OF FIRE AND
ELECTRIC SHOCK. REPLACE ONLY WITH PART
NUMBER SPECIFIED.

REF. NO. PART NAME DESCRIPTION Q'TY PART NO. (SN) MARK

SKW-420 (GY) : POWERED SUBWOOFER

<Note>
EXPLODED VIEW (SKW-420) ---> Refer to service manual of "HTP-420" (Ref. No. : 3808).

SP01 CABINET ASS'Y --- 1 ANW8W670SBM10
SP02 FOOT D87.5 x D37.5 x H50 HIPS BLK 4 BPE8000040001
SP03 STAND BOARD TF-917-28 1 ANF86007-BM10
SP04 FRONT PLATE SKW-420 / ONKYO NAME PLATE 1 BPL8001470001
SP05 WOOD SCREW D8 x D4 x L75 (FOR FOOT) 8 NST8550514750
SP06 WOOD SCREW 4STT+20A (FOR AMPLIFIER / SP) 18 837440204
SP08 WOOFER SPEAKER 20cm 4ohm 50W 1 W20178A

A01 REAR PANEL "SKW-420" SPCC 190 x 120 x T2.0mm 1 GSE4001750001
A02 AC CORD LINE CORD 2P 1800mm BLK POLARIZE 1 VPA0040120010
A03 BUSHING AC LINE BUSHING 1 DBU001002-0011
A04 POWER TRANSFORMER AC120V / 60Hz 100W 1 TTI1120010120
A05 SCREW M4.0 x P0.7 x L25mm (FOR TRANS) 4 HSD1431033250

F902, F903 FUSE 4A / 250V SLOW WALT 2 KSA0204000011

U01 MAIN PC BOARD ASS'Y MAIN PC BOARD ASS'Y 1 APE4012115001
<Note>
U01 : MAIN PC BOARD ASS'Y = PCB BRACKET + HEAT SINK + ALL PARTS FOR MAIN PC BOARD

U02 INPUT PC BOARD ASS'Y INPUT PC BOARD ASS'Y 1 APE4012125001
<Note>
U02 : INPUT PC BOARD ASS'Y = INPUT PC BOARD with RCA JACK + CORD ASS'Y

U03 VR / LED PC BOARD ASS'Y VR / LED PC BOARD ASS'Y 1 APE4012135001
<Note>
U03 : VR/ LED PC BOARD ASS'Y = VR / LED PC BOARD with VR / LED / CORD ASS'Y etc.

SKF-425F (GY) : FRONT SPEAKERS L / R

SP10 COMPLETE UNIT "SKF-425F (GY) L" 1 ANM8M675S-BM10
SP11 BACK LABEL (L) WITHOUT SERIAL NUMBERING 1 YLB810007-FL10
SP12 COMPLETE UNIT "SKF-425F (GY) R" 1 ANM8M675S-BM11
SP13 BACK LABEL (R) WITHOUT SERIAL NUMBERING 1 YLB810007-FR10

SKC-425C (GY) : CENTER SPEAKER

SP14 COMPLETE UNIT "SKC-425C (GY)" 1 ANC8C675S-BM10
SP15 BACK LABEL WITHOUT SERIAL NUMBERING 1 YLB810007-C010

SKM-425S (GY) : SURROUND SPEAKERS L / R

SP16 COMPLETE UNIT "SKM-425S (GY) L" 1 ANU8S675S-BM10
SP17 BACK LABEL (L) WITHOUT SERIAL NUMBERING 1 YLB810007-SL10
SP18 COMPLETE UNIT "SKM-420S (GY) R" 1 ANU8S675S-BM11
SP19 BACK LABEL (R) WITHOUT SERIAL NUMBERING 1 YLB810007-SR10

!
!
!

!

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SKS-HT425

PRINTED CIRCUIT BOARD PARTS LIS

NOTE : THE COMPONENTS IDENTIFIED BY THE MARK

! ARE CRITICAL FOR RISK OF FIRE AND
ELECTRIC SHOCK. REPLACE ONLY WITH PART
NUMBER SPECIFIED.

CIRCUIT NO. PART NAME DESCRIPTION Q'TY PART NO. (SN) MARK

PWB
PWB

IC501 POWER IC 15PIN TDA7293 1 RHI007293-0001

DB901 DIODE RS402L 4A 100V 1 RHD2040100011

SKS-HT425

PACKING PROCEDURE PARTS LIS

<Note>

Parts marked by "NSP" are generally unavailable because
they are not in our Master Spare Parts List.

!

REF. NO. PART NAME DESCRIPTION Q'TY PART NO. (SN) MARK

PACKING
PACKING
PACKING
PACKING
PACKING
PACKING
PACKING
PACKING
PACKING
PACKING
PACKING
PACKING
PACKING
PACKING
PACKING
PACKING

01 TOP POLYFOAM W509 x H605 x T75 1 ITF830338-0001
02 MIDDLE POLYFOAM W509 x H605 x T90 1 ITF830338-0002
03 BOTTOM POLYFOAM W509 x H605 x T75 1 ITF830338-0003
04 POLY BAG (SOFT BAG) (FOR AC CORD) 1 --- NSP
05 PO BAG (HM BAG) L320 x W240 x T0.015 (FOR SKF/SKM) 4 IVA803102-0010
06 PO BAG (HM BAG) L400 x W240 x T0.015 (FOR SKC) 1 IVA803102-0011
07 PO BAG (HM BAG) L1000 x W720 x T0.015 (FOR SKW) 1 IVA8031020008
08 POLY BAG 350 x 250 1 29100097-1A
09 TAPE (SEROHAN) NITTO NO.29 (Yellow) (1) 29110149
10 CARTON BOX SKS-HT425 1 ICC8T425S-BM10
11 PP TAPE W50 (1) 29110071 or
11 PP TAPE NITTO 3703 SUPER W50L100 (1) 29110176
12 INSTRUCTION MANUAL E ENGLISH 8 PAGE 1 YOM800001-0231
13 CORK FOOT Dia 7 x T1.0 / 1 SETS 20 pcs. 1 DUF811001-0001
14 WARRANTY CARD (ONKYO) 1 29365090B
15 CABLE SET SP CABLE / RCA CABLE / POLY BAG 1 WMA8020010009

SKS-HT425

ONKYO U.S.A. CORPORATION

18 Park Way, Upper Saddle River, N.J. 07458, U.S.A.
Tel: [phone] Fax: [phone] http://www.onkyousa.com

ONKYO EUROPE ELECTRONICS GmbH

Liegnitzerstrasse 6, 82194 Groebenzell, GERMANY
Tel: [phone] Fax: [phone] http://www.onkyo.net

ONKYO CHINA LIMITED

Units 2102-2107, Metroplaza Tower I, 223 Hing Fong Road, Kwai Chung,
N.T., HONG KONG Tel: [phone] Fax: [phone]

Sales & Product Planning Div. : 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN
Tel: [phone] Fax: [phone]

ONKYO CORPORATION

http://www.onkyo.com/

HOMEPAG

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