Onkyo SKW-204(B) User manual

SKW-204
SERVICE MANUAL
SERVICE MANUAL
POWERED SUBWOOFER
Black, Silver andYellow models
MODEL SKW-204(B)/(S)/(Y)
Ref. No. 3946
052006
120V AC, 60Hz
230-240V AC, 50Hz
230-240V AC, 50Hz
B MDC
B MPP
S MPP
230-240V AC, 50Hz
120/220-240V AC, 50/60Hz
120/220-240V AC, 50/60Hz
S MPA
S MWT
Y MWT
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.
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

SKW-204
EXPLODEDVIEWS-1
AMPLIFIER SECTION
SKW-204
SP12
x 4 pcs.
A05a
x 2 pcs.
A05
x 4 pcs.
A08
x 2 pcs.
SP11
x 10 pcs.
A05
x 2 pcs.
A05
x 2 pcs.
A05
x 5 pcs.
A103
A103
A102
P901
SP13
x 2 pcs.
U03
A11
A01
U01
A07
A07
A101
A02
A02
U06
U05
U04
U02
A05
Q515
Q516
Q541
F901
T901
A04
A03
F901C
S901
A06
F902
Refer to "EXPLODED VIEWS-2"
<Note>
U04 (VOLTAGE SELECTOR PC BOARD) : MWT type only.
<Note>
F901C (LABEL) : MPP/MPA type only.
Part No. (SN) ---> Refer to
"PRINTED CIRCUIT BOARD PARTS LIST".
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

SKW-204
EXPLODEDVIEWS-2
SPEAKER SECTION
SKW-204
SP07a / b
SP09a - c
SP01a - c
SP04
x 6 pcs.
SP02
x 4 pcs.
SP04
x 4 pcs.
SP03
x 4 pcs.
SP08
SP05a / b
SP06
SP11
x 2 pcs.
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

SKW-204
SCHEMATIC DIAGRAM
SKW-204
A
1
2
3
4
5
BCDEFGH
P906B
P908B
P906A
P906A
P908A
P905B
P905B
P907A
P905A
P907A
T901
NPT-1539DQ
01
02
05
06
J317
FOR SKW-204AMP
J316
FOR SKW-540AMP
S902
S101
P301A
P301B
Q303(1/2)
NJM4558LD
38
2
4
1
Q302(1/2)
NJM4558LD
38
2
4
1
E801
Q302(2/2)
NJM4558LD
4
8
5
6
7
Q303(2/2)
NJM4558LD
4
8
5
6
7
Q301(2/2)
NJM4558LD
4
8
5
6
7
Q301(1/2)
NJM4558LD
3
2
1
8
4
Q602
KRC103M
Q606
KRA103M
P301
R651
12K (1/2W)
R951
3.3K
POWER NEED TO CONFIRM
(2W)
R952
3.3K (2W)
R901
820(1W)
R902
820(1W)
0
1
-0.6
1.6V
-1.6
-1
0
0.05
0.6
5.0
5.6
D901
D3SBA20
R544
100B
R528
390
(1/2W)
R628
330K
R629
NC
R701
NC
R904
1K
(1/2W)
R903
10K
R609
39K
R611
820K
R610
560K
R616
100K
R617
1K
R621
1K
R615
22K
R612
39K
R614
120K R613
470K
R619
22K
R620
100K
R624
100K
R623
100K R627
680K
R622
10K
R626
2.2M
R625
180K
S901
S901
P901
P901
F901
5A/125V
F902
1.6A/250V
F901
1.6A/250V
T901
NPT-1539P
P903B
P903B
J903A
P632A
RED
GREEN
D601
MTZJ2.7B
D602
MTZJ2.7B
D501
MTZJ5.6B
D952
MTZJ15C
D951
MTZJ15C
D904
MTZJ5.6B
Q516
2SA1987-O/R
Q519
2SA965-Y
Q517
2SA933S-S
Q507
2SA949-Y
Q505
2SA949-Y
Q509
2SA949-Y
Q514
2SA1930
Q604
2SA933S
Q605
2SA933S
Q607
2SA933S
Q541
2SC3423
Q506
2SC2229-Y
Q510
2SC2229-Y
Q503
2SC2240-BL
Q515 2SC5359-O/R
Q513
2SC5171
Q518
2SC2235-Y
Q502
2SC2240-BL
Q501
2SC2240-BL
Q609
NC
Q603
2SC1740S-S
Q608
2SC1740S-S
P906B
P902A
P902A
JL535A/B
P531
P501B
P633
P631
D651
1SS133
D603
1SS133
D606
1SS133 D903
RL1N4003
or GP104003E
D902
RL1N4003
or GP104003E
D605
1SS133
R302
20K
R101(2/2)
20K
R101
20K
C301
C303
NC
C955
223J
C316
124
C313
124
C315
334J
C312
334J
C506
070
C502
NC
C514
101
C520
224
C519
224
C505
020
C503
224J
C950
104/50
C903
104J/100
C904
104J/100
C311
100/25
C302
47/50
C314
47/16
C527
1/50
C501
47/50
C517
10/50
C528
10/50
C526
10/50
C504
220/16
C951
220/16
C952
220/16
C909
22/50
C601
10/50
C603
470/16
C602
10/50
C604
33/35
C906
5600/71
C905
5600/71
R317
2.2K
R306
47K
R301
1K
R311
100K
R313
3.3K
R312
100K
R314
3.3K
R315
3.3K
R307
220*
R305
22K*
R303
47K
R304
2.2K*
R321
1K
R320
10K
R316
10K
R319
100K
R531
0.22
(5W)
R533
3.3
(1W)
R508
47
(1/4W)
R511
82
(1/4W)
R512
68
(1/4W)
R514
82 (1/4W)
R513
82
(1/4W)
R516
12K
R515
12K
R502
47K
R510
100K
R543
180
R526
82
(1/2W)
R517
3.3K
R541
820
R542
150
R505
1K
(1/4W)
R506
1K
(1/4W)
R507
33K
R527
270
R509
1K
R504
2.2K
R503
5.6K
R522
220
R521
220
R501
1K
R603
150K
R601
5.6K
R605
22
R602
100K
R604
180
FOR SKW-204AMP NAAF-8830
PHASE SWITCH
OFF ON
MWT
MPP/MPA
NAPS-8831 NASW-8832
NASW-8833
NAPS-8831
NASW-8833
FOR SKW-204AMP
PHASE SWITCH AND FREQUENCY ADJUST.
P906A
P907A S901
P901
F901
5A/125V
T901
NPT-1539D
P903B
P906B
P902A
MDC
NASW-8833
NAPS-8831
NAAF-8829
224
(PP/PA/WT)
NC
NC
NC
NC
NC
+5.6V
AGAINST FIRE HAZARD, REPLACE
VA
FOR CONTINUED PROTECTION
AND RATING INDICATED.
ONLY WITH FUSE OF SAME TYPE
CAUTION ATTENTION
ET CALIBRATION COMME INDIQUE.
D'INCENDIE, REMPLACER UNIQUEMENT
PERMANENTE CONTRE LES RISQUES
AFIN D'ASSURER UNE PROTECTION
PAR UN FUSIBLE DE MEME TYPE
VA
E LENT.POUR UNE PROTECTION PERMANENTE,N'UTILISER
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.
QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
CE SYMBOLE INDIQUE QUE LE FUSIBLE UTLISE EST
FOR CONTINUED PROTECTION AGAINST FIRE
RATING REFER TO THE MARKING ADJACENT TO THE SYMBOL.
HAZARD,REPLACE WITH SAME TYPE FUSE. FOR FUSE
THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW OPERATING TYPE
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.
!
NOTE
POWER SWITCH
PC BOARD
U05
POWER
TRANSFORMER
PC BOARD
U03
MAIN PC BOARD
U01
LINE INPUT
OUTPUT
LEVEL
POWER
SWITCH
SPEAKER
LED
MPP/MPA
ADJUST.
IDLING
<Note>
NC : No mount of parts.
Hi
Hi
Lo
VOLTAGE
SELECTOR
PC BOARD
U04
MWT
Lo
MWT
FREQUENCY ADJUSTMENT
PC BOARD
U02
POWER
SWITCH
MDC
FREQ.
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

SKW-204
SCHEMATIC DIAGRAM
SKW-204
A
1
2
3
4
5
BCDEFGH
P906B
P908B
P906A
P906A
P908A
P905B
P905B
P907A
P905A
P907A
T901
NPT-1539DQ
01
02
05
06
J317
FOR SKW-204AMP
J316
FOR SKW-540AMP
S902
S101
P301A
P301B
Q303(1/2)
NJM4558LD
38
2
4
1
Q302(1/2)
NJM4558LD
38
2
4
1
E801
Q302(2/2)
NJM4558LD
4
8
5
6
7
Q303(2/2)
NJM4558LD
4
8
5
6
7
Q301(2/2)
NJM4558LD
4
8
5
6
7
Q301(1/2)
NJM4558LD
3
2
1
8
4
Q602
KRC103M
Q606
KRA103M
P301
R651
12K (1/2W)
R951
3.3K
POWER NEED TO CONFIRM
(2W)
R952
3.3K (2W)
R901
820(1W)
R902
820(1W)
0
1
-0.6
1.6V
-1.6
-1
0
0.05
0.6
5.0
5.6
D901
D3SBA20
R544
100B
R528
390
(1/2W)
R628
330K
R629
NC
R701
NC
R904
1K
(1/2W)
R903
10K
R609
39K
R611
820K
R610
560K
R616
100K
R617
1K
R621
1K
R615
22K
R612
39K
R614
120K R613
470K
R619
22K
R620
100K
R624
100K
R623
100K R627
680K
R622
10K
R626
2.2M
R625
180K
S901
S901
P901
P901
F901
5A/125V
F902
1.6A/250V
F901
1.6A/250V
T901
NPT-1539P
P903B
P903B
J903A
P632A
RED
GREEN
D601
MTZJ2.7B
D602
MTZJ2.7B
D501
MTZJ5.6B
D952
MTZJ15C
D951
MTZJ15C
D904
MTZJ5.6B
Q516
2SA1987-O/R
Q519
2SA965-Y
Q517
2SA933S-S
Q507
2SA949-Y
Q505
2SA949-Y
Q509
2SA949-Y
Q514
2SA1930
Q604
2SA933S
Q605
2SA933S
Q607
2SA933S
Q541
2SC3423
Q506
2SC2229-Y
Q510
2SC2229-Y
Q503
2SC2240-BL
Q515 2SC5359-O/R
Q513
2SC5171
Q518
2SC2235-Y
Q502
2SC2240-BL
Q501
2SC2240-BL
Q609
NC
Q603
2SC1740S-S
Q608
2SC1740S-S
P906B
P902A
P902A
JL535A/B
P531
P501B
P633
P631
D651
1SS133
D603
1SS133
D606
1SS133 D903
RL1N4003
or GP104003E
D902
RL1N4003
or GP104003E
D605
1SS133
R302
20K
R101(2/2)
20K
R101
20K
C301
C303
NC
C955
223J
C316
124
C313
124
C315
334J
C312
334J
C506
070
C502
NC
C514
101
C520
224
C519
224
C505
020
C503
224J
C950
104/50
C903
104J/100
C904
104J/100
C311
100/25
C302
47/50
C314
47/16
C527
1/50
C501
47/50
C517
10/50
C528
10/50
C526
10/50
C504
220/16
C951
220/16
C952
220/16
C909
22/50
C601
10/50
C603
470/16
C602
10/50
C604
33/35
C906
5600/71
C905
5600/71
R317
2.2K
R306
47K
R301
1K
R311
100K
R313
3.3K
R312
100K
R314
3.3K
R315
3.3K
R307
220*
R305
22K*
R303
47K
R304
2.2K*
R321
1K
R320
10K
R316
10K
R319
100K
R531
0.22
(5W)
R533
3.3
(1W)
R508
47
(1/4W)
R511
82
(1/4W)
R512
68
(1/4W)
R514
82 (1/4W)
R513
82
(1/4W)
R516
12K
R515
12K
R502
47K
R510
100K
R543
180
R526
82
(1/2W)
R517
3.3K
R541
820
R542
150
R505
1K
(1/4W)
R506
1K
(1/4W)
R507
33K
R527
270
R509
1K
R504
2.2K
R503
5.6K
R522
220
R521
220
R501
1K
R603
150K
R601
5.6K
R605
22
R602
100K
R604
180
FOR SKW-204AMP NAAF-8830
PHASE SWITCH
OFF ON
MWT
MPP/MPA
NAPS-8831 NASW-8832
NASW-8833
NAPS-8831
NASW-8833
FOR SKW-204AMP
PHASE SWITCH AND FREQUENCY ADJUST.
P906A
P907A S901
P901
F901
5A/125V
T901
NPT-1539D
P903B
P906B
P902A
MDC
NASW-8833
NAPS-8831
NAAF-8829
224
(PP/PA/WT)
NC
NC
NC
NC
NC
+5.6V
AGAINST FIRE HAZARD, REPLACE
VA
FOR CONTINUED PROTECTION
AND RATING INDICATED.
ONLY WITH FUSE OF SAME TYPE
CAUTION ATTENTION
ET CALIBRATION COMME INDIQUE.
D'INCENDIE, REMPLACER UNIQUEMENT
PERMANENTE CONTRE LES RISQUES
AFIN D'ASSURER UNE PROTECTION
PAR UN FUSIBLE DE MEME TYPE
VA
E LENT.POUR UNE PROTECTION PERMANENTE,N'UTILISER
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.
QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
CE SYMBOLE INDIQUE QUE LE FUSIBLE UTLISE EST
FOR CONTINUED PROTECTION AGAINST FIRE
RATING REFER TO THE MARKING ADJACENT TO THE SYMBOL.
HAZARD,REPLACE WITH SAME TYPE FUSE. FOR FUSE
THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW OPERATING TYPE
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.
!
NOTE
POWER SWITCH
PC BOARD
U05
POWER
TRANSFORMER
PC BOARD
U03
MAIN PC BOARD
U01
LINE INPUT
OUTPUT
LEVEL
POWER
SWITCH
SPEAKER
LED
MPP/MPA
ADJUST.
IDLING
<Note>
NC : No mount of parts.
Hi
Hi
Lo
VOLTAGE
SELECTOR
PC BOARD
U04
MWT
Lo
MWT
FREQUENCY ADJUSTMENT
PC BOARD
U02
POWER
SWITCH
MDC
FREQ.
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

SKW-204
PRINTED CIRCUIT BOARD VIEWS-1
MAIN PC BOARD (NAAF-8829)U01
Component side
R544
P502A
Q517
R543
R533
Q515
C502
R527
C514
J332
Q541
Q516
R522
R521
J322
R513
R511
J334
R516 R515 R507
R504
R510
C503
R651
R503
R509
R501
R502
C504
C951
R517
R542
R541
Q510
Q506
Q507
R514
R512
R508
C526
C517
C506
Q505
Q509
Q503
C505
J310
Q502
Q501
R505
R506
C501
C519 C520
J323
NCAF-8829
1
25138829A
P531
R531
J324
J308
C527
C903 C904
Q518
Q519
C528
J306
J311
J305
J312
R528
R526
J304
J303
J321
J313 J319
C952
J307
Q514
Q513
J330
J340
J333 D903
D902
R902
R901
C909
R903 D904
R605
C602
R604
R603
R602
R904
C604
R622
Q608
R626
R624
Q606
Q607
Q604
R619
R623
R621
Q603
Q605
D605
Q602
R610
C603
R601
J346
J331
D952
D951
J320
J314
J325
D651
P632A
J336 J335
JL535A
JL535B
P633
RED
BLACK
BC E CEB
BCE
E C B
E C B
1
-Vee
+Vcc
+Vcc
J352
J351
C601
D603
R304
R305
R303
R307
J316
R620
R614
R613
R612
R302
R302
P301
P301
C955
R627
Q609
R629
R628
D606
R625
J348 R611
J337
J327
J326
R616
J342
R301
J344
R617
J338
J347
R609
J341
J318
C950
R314
R311
C311
R315
R312
C316
R313
R316
81234567
R319
C314
R317
7654 3218
R320
J302
C303
J309
J329
R615
J349
J350
2345 678
P911
J301
D501
R545
Q504
P903A
RED REDBLK
Q301
Q302
Q303
R701
E701
C301
P631
P912
C906
C906
C905
C905
R952
J955
R951
E801
D601
D602
C302
R306
D901
J956
P301A
C312
C315
R321
C313
7
25
12
22
17
15
12
15
7
20
7
17
12
17
7
20
7
7
7
7
7
7
7
7
7
A
1
2
3
4
5
BCD
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

SKW-204
PRINTED CIRCUIT BOARD VIEWS-2
POWER TRANSFORMER PC BOARD (NAPS-8831)U03
Component side
NCPS-8831
25138831
1
2356
810121416
AC-H
AC-G
P902A
F901A F901B
5A/125V F901
1
P905A
P907A
P906A
J901
J905
J903
J904
J902
T901
T901
P910A
P910A
P903A P903A
AC-G AC-H
RISK OF FIRE
-REPLACE FUSE
AS MARKED.
15
15
15
15
A
1
2
3
4
5
BCD
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

SKW-204
PRINTED CIRCUIT BOARD VIEWS-3
FREQUENCY ADJUSTMENT PC BOARD (NAAF-8830)U02
Component side
VOLTAGE SELECTOR PC BOARD (NASW-8832)U04
Component side
POWER SWITCH PC BOARD (NASW-8833)U05
Component side
<Note>
MWT type only
NCAF-8830
25138830 1
NORMALREVERSE
1
R101
R101
P301B
J101 J103
J102
S101
NCSW-8832
25138832 1
F902A
120V
F902B
F902 T1.6A250V
S902
S902
P905B
240V
J908A
AC-G AC-H
NCSW-8833
25138833 1
S901
C901
P906B
J908B
BLACK
AC-G AC-H
RISK OF FIRE
-REPLACE FUSE
AS MARKED.
15 7
A
1
2
3
4
5
BCD
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

ADJUSTMENT PROCEDURE
ADJUSTMENT OF IDLING CURRENT
SKW-204
Test point
DC voltmeter
100 ohm
(1/4W)
P531
<Fig-1>
Test point
P631
MAIN PC board ass'y "NAAF-8829"
Test point
P531
Trimming resistor
R544
Short
[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 AC power cord into a wall outlet.
5. Press POWER button to turn on the unit.
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. Press POWER button to turn off the unit.
9. Disconnect the DC voltmeter.
10. Disconnect the AC power cord from a wall outlet.
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

SKW-204
PACKING PROCEDURE
TOP
BOTTOM
SKW-204( )
SKW-204( )
SKW-204( )
SKW-204( )
SKW-204( )
11
10a - d
07
10a - d
09
01a - f
09
02
(Top)
03
(Bottom)
07
07
12
L = 10 ft.
(3 m)
(Black / RCA)
13
04 : INNER
05 : OUTER
07
08
14
15
16
Front side
Front side
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

SKW-204
ONKYO EUROPE UK Office
Suite 1, Gregories Court, Gregories Road, Beaconsfield, Buckinghamshire, HP9 1HQ
UNITED KINGDOM Tel: [phone] Fax: [phone]
ONKYO U.S.A. CORPORATION
18 Park Way, Upper Saddle River, N.J. 07458, U.S.A.
Tel: [phone] Fax: [phone] http://www.us.onkyo.com/
ONKYO EUROPE ELECTRONICS GmbH
Liegnitzerstrasse 6, 82194 Groebenzell, GERMANY
Tel: [phone] Fax: [phone] http://www.eu.onkyo.com/
Sales & Product Planning Div. : 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN
Tel: [phone] Fax: [phone]
ONKYO CORPORATION
http://www.onkyo.com/
HOMEPAGE
ONKYO CHINA LIMITED
Units 2102-2107, Metroplaza Tower I, 223 Hing Fong Road, Kwai Chung,
N.T., HONG KONG Tel: [phone] Fax: [phone]
http://www.ch.onkyo.com/
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com