Page 1
SERVICE MANUAL
SERVICE MANUAL
1
POWERED SUBWOOFER
MODEL SKW-100
SKW-100
Ref. No. 3753
092002
Black models
120V AC, 60HzDD
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.
Page 2
SPECIFICATION
2
Type Bass-reflex with built-in power amplifier
Frequency response 30 Hz-150 Hz
Output power 150 W Dynamic
Input sensitivity 220 mV
Input impedance 15 kΩ
Woofer 8 inch cone type
Power supply AC120V, 60Hz
Power consumption 75 W
Dimensions (WxHxD) 9-1/4" x 20-5/16" x 16-3/16" / 235 x 516 x 411 mm
Weight 29.1 lbs. / 13.2 kg
Specifications and appearance may subject to change for improvement without prior notice.
SKW-100
SERVICE PROCEDURES
1. Replacing the fuse
This symbol located near the fuses indicates that the
fuse used is fast 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 a rapide.
Pour une protection permanente, n'untiliser que fusibles de
meme type. Ce darnier est la qu le present symbol est
appse.
CIRCUIT NO. PART NO. DESCRIPTION
F902,903
HWF1180406100 T4AL/250V, Fuse
Page 3
SKW-100
3
A
EXPLODED VIEW
1
2
BCD
3
4
5
Page 4
A
4
SCHEMATIC DIAGRAM
BCDEFGH
1
2
3
TO RB301
R305
2.2uF
C351
47K
CN301
R351
100K
R352
Q301
2SC945
R354
2K
R355
C305
0.22uF
C385
100u/16
C304
1uF
C353
47p
C352
.1uF
R384
2.2K
C401
R304
R402
10K
R356
R355
Q302
2SC945
C402
2
3
R401
150K
LM324
IC1-A
R358
270K
C354
R359
270K
R357
U1
MAIN PC BOARD
(LVM0199C011)
R369
10K
CN302
1 2 3 4
C364
.1uF
C501
R372
330
C360
220u/16
R405
15K
D302
C405
0.033uF
C419
200p
R406
56K
C357
220u/18
R364
220K
9
10
C408
0.0058uF
R385
1M
IC401-C
8
R366
680K
R387
82K
C407
1uF
R368
R407
4.7K
ZD301
8V
R403
22K
R380
10K
R361
C418
200p
C404
0.068uF
R362
1K
C403
0.068uF
1
C355
47p
13
12
R404
150K
R383
LM324
IC1-B
14
D307
C358
10u/16
TO CN302
JK301
CRP0008-001
4
5
R301
12K
C301
100p
JACK PC BOARD
(LVM0199C21)
C302
1uF
R302
6.8K
RB301
R303
10K
RB401
R370
Q303
2SC945
R377
33K
10K
R373
R374
CN401
R371
Q307
2SC945
10K
VR401
50K
LB401
U2U3
VOLUME PC BOARD
R375
R370
10K
R376
10K
(LVA0222C001)
Page 5
SKW-100
5
TO RB401
R501
22K
R385
200
R518
10K
2SC945
Q502
Q501
2SC945
R502
1K
R515
10K
C505
10u/50
IC502-B
R573
1K
5
6
D305
R512
120K
8
R512
20K
7
C504
10u/50
D308
R518
680
C502
2.2uF
R526
10K
R519
10K
C512
22u/25
R505
4.7K
R508
1M
1
C508
4
2
3
R520
47K
C509
100p
R507
200K
IC502-A
C503
2.2uF
R509
10K
IC501
R506
39K
R525
22K
C507
.001uF
C513
22u / 25
C514 10uF
R522
33K
R521
22K
C518
22u / 25
R523
10K
D507
C515
10uF
R524
4.7
C510
.1uF
CN501
C358
22u/50
+12V
-12V
C412
.022uF
C413
.022uF
C414
.22uF
C415
.22uF
C410
47u/15
C411
47u/15
R411
100
R470
100
C919
100u/25
C917
100u/25
+12V
C918
.7uF
ZD902
75V
ZD901
75V
+VCC
R903 620/2W
C909
.7uF
C870
.1uF
R902
1K/2W
-VEE
C907
.022uF
C908
.022uF
C908
4700u/50
47455-078
C905
4700u/50
C915
.7uF
RS-402
DB901
F903
T4AL/250V
F902
T4AL/250V
T807
Page 6
SKW-100
6
A
SCHEMATIC DIAGRAM
1
CN301
C304
1uF
2
3
4
TO RB301
R305
2.2uF
C351
47K
R351
100K
R352
C305
0.22uF
C385
100u/16
Q301
2SC945
R354
2K
R355
JK301
CRP0008-001
R301
12K
C301
100p
C353
47p
C352
.1uF
C302
1uF
R384
2.2K
C401
R304
R302
6.8K
R402
10K
R356
R355
Q302
2SC945
RB301
R303
10K
C402
2
3
BCDEFGH
MAIN PC BOARD
(LVM0199C011)
C405
0.033uF
D302
C419
200p
R406
56K
R364
220K
C357
220u/18
LM324
IC1-B
LB401
14
D307
C358
10u/16
R405
15K
9
10
C408
0.0058uF
R385
1M
CN401
IC401-C
8
R366
680K
R387
82K
R374
R375
C407
1uF
R368
R373
Q307
2SC945
R407
4.7K
ZD301
8V
R369
10K
R371
10K
R370
10K
C364
.1uF
CN302
1 2 3 4
R376
10K
C501
C360
220u/16
Q303
2SC945
R377
33K
R372
330
TO RB401
R501
22K
R370
10K
R385
200
C358
22u/50
R518
10K
+12V
-12V
2SC945
Q502
Q501
2SC945
C412
.022uF
C413
.022uF
R502
1K
R515
10K
C505
10u/50
C414
.22uF
C415
.22uF
IC502-B
R573
1K
5
6
D305
R512
120K
8
R512
20K
C410
47u/15
C411
47u/15
R411
100
7
C504
10u/50
D308
R470
100
R518
680
R526
10K
C919
100u/25
C917
100u/25
C502
2.2uF
R519
10K
C512
22u/25
+12V
R505
4.7K
R508
1M
1
C508
4
C918
.7uF
2
3
R520
47K
C509
100p
R507
200K
IC502-A
ZD902
75V
ZD901
75V
C503
2.2uF
R509
10K
IC501
R506
39K
+VCC
R903 620/2W
C909
.7uF
C870
.1uF
R902
1K/2W
-VEE
R525
22K
C907
.022uF
C908
.022uF
C507
.001uF
C513
22u / 25
C514 10uF
C908
4700u/50
47455-078
C905
4700u/50
C915
.7uF
R522
33K
R521
22K
C518
22u / 25
R523
10K
D507
RS-402
DB901
C515
10uF
R524
4.7
C510
.1uF
F903
T4AL/250V
F902
T4AL/250V
CN501
R401
150K
LM324
IC1-A
R358
270K
C354
R359
270K
R357
U1
R403
22K
R380
10K
R361
C404
0.068uF
R362
1K
RB401
VR401
50K
C418
200p
R404
150K
C355
47p
R383
TO CN302
13
12
C403
0.068uF
1
T807
5
JACK PC BOARD
U2U3
(LVM0199C21)
VOLUME PC BOARD
(LVA0222C001)
Page 7
SKW-100
7
A
PRINT CIRCUIT BOARD VIEW
1
2
BCD
U1
MAIN PC BOARD
(LVM0199C011)
3
4
JACK PC BOARD
(LVA0222C001)
U2
U3
VOLUME PC BOARD
(LVM0199C021)
5
Page 8
SKW-100
r
r
y
y
r
y
t
t
t
t
k
8
Ref. No. Part No Description
1 BPR0018C001 Pote tube
2 DPP9630-158 Paper duct
3 EVM056C001 Wood box
4 Logo
5 IVE0037-001 Sponge
6 FSWA080-312 SPK drive
7 H011109-316 Screw
8 BPE0007C001 Foot
9 H011708-325 Screw
10 EVB0001C001 Wood board
11 H011708-370 Screw
12 BPC0021-001 Rear cove
13 APE0222C001 VR/LED ass'
14 APE0199CC23 Jack ass'
15 DLH0014-002 LED holde
16 GSE0117C001 PCB BKT
17 DSS0007-002 Washer
18 H121003-310 Screw
19 APE0199CD13 PCB ass'
20 H121009-308 Screw
21 IVE0183C001 Sponge
22 IVE0182C001 Sponge
23 GSP0047C001 Rear plate
24 H121009-312 Screw
25 BPK5018-003 Volume knob
26 47455-D65 Line cord
27 IVP0001-003 Polybag
28 DBU3050-110 Bushing
29 H110504-325 Screw
30 ICU0007-001 Rubber pad
31 TT11201C012 PWR trans
32 HWF8040-010 Washer FIB
33 H110303-308 Screw
34 GSE0110-001 Bracke
35 GSE0206-001 PCB bracke
36 HWT8540-110 Washer
37 HNM4070-130 Nu
38 H110303-314 Screw
39 GSE0093-002 PCB bracke
40 GAL0044C002 Heat sin
2210746 2SC945
RHI4558-001 JRC4558D
RHI0324-001 LM324N (14 PIN)
RHI7293-001 TDA7293 (15 PIN)
41 Sound absorber
SKW-100 Parts list
Page 9
SKW-100
9
ONKYO CORPORATION
Sales & Product Planning Div. : 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN
Tel: 072-831-8111 Fax: 072-833-5222
ONKYO U.S.A. CORPORATION
18 Park Way, Upper Saddle River, N.J. 07458, U.S.A.
Tel: 201-785-2600 Fax: 201-785-2650 E-mail: onkyo@onkyousa.com
HOMEPAG
http://www.onkyo.co.jp/
E
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