SKW-100
SERVICE MANUAL
SERVICE MANUAL
POWERED SUBWOOFER
Black models
MODEL
SKW-100
120V AC, 60Hz
DD
Ref. No. 3753
092002
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.
1
SKW-100
SPECIFICATION
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
SERVICE PROCEDURES
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 k
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.
2
SKW-100
EXPLODED VIEW
A
1
2
3
4
5
BCD
3
SKW-100
SCHEMATIC DIAGRAM
A
1
2
3
4
5
B
C
DE
FG
H
CN301
RB301
2.2uF
R352
R305
C351
47K
R351
100K
C385
100u/16
R384
2.2K
TO RB301
C305
0.22uF
C304
1uF
R304
R402
10K
1
2
3
C401
C402
R401
150K
LM324
R403
22K
C403
0.068uF
C404
0.068uF
R404
150K
LM324
IC1-B
IC1-A
C418
200p
13
12
14
R405
15K
C405
0.033uF
C419
200p
R406
56K
9
10
8
IC401-C
C408
0.0058uF
C407
1uF
R407
4.7K
CN302
1 2
3
4
C501
R501
22K
TO RB401
R502
1K
2SC945
Q502
R573
1K
R512
20K
IC502-B
5
6
7
8
D305
R515
10K
Q501
2SC945
R518
10K
C505
10u/50
R512
120K
D308
C504
10u/50
R508
1M
R526
10K
1
2
4
3
IC502-A
R507
200K
C502
2.2uF
R505
4.7K
C512
22u/25
R509
10K
C503
2.2uF
R506
39K
C507
.001uF
R518
680
R519
10K
C508
R520
47K
C509
100p
IC501
R525
22K
C513
22u / 25
C518
22u / 25
C510
.1uF
R524
4.7
CN501
C514 10uF
R522
33K
R521
22K
R523
10K
C515
10uF
D507
F903
T4AL/250V
F902
T4AL/250V
RS-402
DB901
T807
47455-078
+VCC
R903 620/2W
C905
4700u/50
C907
.022uF
C909
.7uF
ZD902
75V
C915
.7uF
C908
.022uF
C870
.1uF
C908
4700u/50
R902
1K/2W
-VEE
ZD901
75V
C917
100u/25
C918
.7uF
C919
100u/25
+12V
+12V
-12V
C413
.022uF
C415
.22uF
C412
.022uF
C414
.22uF
C410
47u/15
C411
47u/15
R411
100
R470
100
R370
10K
Q303
2SC945
R376
10K
R377
33K
C358
22u/50
CN401
R374
R373
R375
R371
10K
Q307
2SC945
R370
10K
C301
100p
R302
6.8K
C302
1uF
R301
12K
R303
10K
JK301
CRP0008-001
TO CN302
RB401
VR401
50K
LB401
R385
200
R372
330
C360
220u/16
ZD301
8V
C364
.1uF
R369
10K
R364
220K
R366
680K
R368
R387
82K
R385
1M
R380
10K
C355
47p
R383
C358
10u/16
D302
D307
C357
220u/18
R356
R358
270K
C354
R362
1K
R361
R359
270K
R355
C353
47p
Q302
2SC945
R357
C352
.1uF
R355
R354
2K
Q301
2SC945
U1
U2
U3
MAIN PC BOARD
(LVM0199C011)
VOLUME PC BOARD
(LVA0222C001)
JACK PC BOARD
(LVM0199C21)
4
SKW-100
SCHEMATIC DIAGRAM
A
1
2
3
4
5
B
C
DE
FG
H
CN301
RB301
2.2uF
R352
R305
C351
47K
R351
100K
C385
100u/16
R384
2.2K
TO RB301
C305
0.22uF
C304
1uF
R304
R402
10K
1
2
3
C401
C402
R401
150K
LM324
R403
22K
C403
0.068uF
C404
0.068uF
R404
150K
LM324
IC1-B
IC1-A
C418
200p
13
12
14
R405
15K
C405
0.033uF
C419
200p
R406
56K
9
10
8
IC401-C
C408
0.0058uF
C407
1uF
R407
4.7K
CN302
1 2
3
4
C501
R501
22K
TO RB401
R502
1K
2SC945
Q502
R573
1K
R512
20K
IC502-B
5
6
7
8
D305
R515
10K
Q501
2SC945
R518
10K
C505
10u/50
R512
120K
D308
C504
10u/50
R508
1M
R526
10K
1
2
4
3
IC502-A
R507
200K
C502
2.2uF
R505
4.7K
C512
22u/25
R509
10K
C503
2.2uF
R506
39K
C507
.001uF
R518
680
R519
10K
C508
R520
47K
C509
100p
IC501
R525
22K
C513
22u / 25
C518
22u / 25
C510
.1uF
R524
4.7
CN501
C514 10uF
R522
33K
R521
22K
R523
10K
C515
10uF
D507
F903
T4AL/250V
F902
T4AL/250V
RS-402
DB901
T807
47455-078
+VCC
R903 620/2W
C905
4700u/50
C907
.022uF
C909
.7uF
ZD902
75V
C915
.7uF
C908
.022uF
C870
.1uF
C908
4700u/50
R902
1K/2W
-VEE
ZD901
75V
C917
100u/25
C918
.7uF
C919
100u/25
+12V
+12V
-12V
C413
.022uF
C415
.22uF
C412
.022uF
C414
.22uF
C410
47u/15
C411
47u/15
R411
100
R470
100
R370
10K
Q303
2SC945
R376
10K
R377
33K
C358
22u/50
CN401
R374
R373
R375
R371
10K
Q307
2SC945
R370
10K
C301
100p
R302
6.8K
C302
1uF
R301
12K
R303
10K
JK301
CRP0008-001
TO CN302
RB401
VR401
50K
LB401
R385
200
R372
330
C360
220u/16
ZD301
8V
C364
.1uF
R369
10K
R364
220K
R366
680K
R368
R387
82K
R385
1M
R380
10K
C355
47p
R383
C358
10u/16
D302
D307
C357
220u/18
R356
R358
270K
C354
R362
1K
R361
R359
270K
R355
C353
47p
Q302
2SC945
R357
C352
.1uF
R355
R354
2K
Q301
2SC945
U1
U2
U3
MAIN PC BOARD
(LVM0199C011)
VOLUME PC BOARD
(LVA0222C001)
JACK PC BOARD
(LVM0199C21)
5