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.
Type :
Input sensitivity/impedance :
Maximum output power :
Frequency response :
Cabinet capacity :
Dimensions (W x H x D) :
Weight :
Drivers unit :
Power supply :
Power consumption :
Other :
Front Speaker (SKF-820F)
Bass-reflex
300 mV / 100 kohm
220 W (Dynamic Power)
23 Hz - 150 Hz
1.59 cubic feet (44.9 L)
11-5/16" x 21-1/8" x 16-3/16"
(287 x 536 x 411 mm)
43.3 lbs. (19.7 kg)
8 inch (20 cm) Cone Woofer
x 2
AC 120 V, 60 Hz
170 W
Auto Standby function
Type :
Impedance :
Maximum input power :
Output sound pressure level :
Frequency response :
Crossover frequency :
Cabinet capacity :
Dimensions (W x H x D) :
Weight :
Drivers unit :
Terminal :
Other :
2 Way Bass-reflex
8 ohm
130 W
85 dB/W/m
60 Hz - 45 kHz
5 kHz
0.27 cubic feet (7.7 L)
15-1/4" x 6-3/16" x 7-15/16"
(387 x 157 x 202 mm)
9.5 lbs. (4.3 kg)
4 inch (10 cm) A-OMF
Cone Woofer x 2
1 inch (2.5 cm) Soft Dome
tweeter
Color-coded binding post
Magnetic shielding
Surround Speaker (SKM-820S/SKB-820)
Type :
Impedance :
Maximum input power :
Output sound pressure level :
Frequency response :
Crossover frequency :
Cabinet capacity :
Dimensions (W x H x D) :
Weight :
Drivers unit :
Terminal :
Other :
2 Way Bass-reflex
8 ohm
130 W
86 dB/W/m
50 Hz - 45 kHz
5 kHz
0.38 cubic feet (10.8 L)
7-7/16" x 16-1/2" x 9-5/16"
(189 x 419 x 236 mm)
13.7 lbs. (6.2 kg)
5-1/4 inch (13 cm) A-OMF
Cone Woofer x 2
1 inch (2.5 cm) Soft Dome
tweeter
Color-coded binding post
Magnetic shielding
Type :
Impedance :
Maximum input power :
Output sound pressure level :
Frequency response :
Crossover frequency :
Cabinet capacity :
Dimensions (W x H x D) :
Weight :
Drivers unit :
Terminal :
Specifications and appearance are subject to change
without prior notice.
2 Way Bass-reflex
8 ohm
130 W
82 dB/W/m
60 Hz - 50 kHz
5 kHz
0.09 cubic feet (2.7 L)
6-7/8" x 10-7/16" x 4-15/16"
(175 x 265 x 125 mm)
3.7 lbs. (1.7 kg)
4 inch (10 cm) Cone Woofer
1 inch (2.5 cm) Balanced Dome
tweeter
Color-coded binding post
Page 3
EXPLODED VIEWS-1
SKW-820 : POWERED SUBWOOFER
SP09
x 10pcs.
A02
A03
P902
A05
x 8pcs.
A103
A16
x 2pcs.
HTP-820
SP16 : UL LABEL (for amp. rear panel)
A102
A03
A02
A04
A15
A10
x 2pcs.
U01
U02
A11
A101
A06
x 2pcs.
A13
U04
A05
x 3pcs.
A10
Q951
A10
x 4pcs.
Q952
A08
x 2pcs.
U05
Refer to "EXPLODED VIEWS-2"
A01
T901
F901
A07
Q515
Q541
Q516
SP11
x 4pcs.
SP11
x 4pcs.
SP10
x 2pcs.
U03
HTP-820
Page 4
EXPLODED VIEWS-2
HTP-820
SKW-820 : POWERED SUBWOOFER
SP14
SP08
SP09
x 8 pcs.
SP09
x 8 pcs.
SP08
SP01
SP13
SP02
SP12
SP02
SP13
SP15
x 2 pcs.
SP07
SP04
x 4 pcs.
SP06
x 4 pcs.
SP05
x 4 pcs.
HTP-820
Page 5
EXPLODED VIEWS-3
SKF-820F <L> / SKF-820F <R>
SP31a / SP31b
Lch
TERMINAL :
Gold
(White / Black)
Rch
TERMINAL :
Gold
(Red / Black)
SP30a / SP30b
HTP-820
SP21a / SP21b
with Catching Holder (SP22)
SP28
SP29
x 4 pcs.
SP26
x 4 pcs.
SP20a : Complete unit SKF-820F (S) <L>
SP20b : Complete unit SKF-820F (S) <R>
SP22
x 4 pcs.
SP23
SP23
SP24
SP26
x 4 pcs.
SP27
x 4 pcs.
SP33
with Badge (SP34)
HTP-820
SP34
Page 6
EXPLODED VIEWS-4
HTP-820
SKC-820C
SP51
TERMINAL :
Gold
(Green / Black)
SP40 : Complete unit SKC-820C (S)
SP50
SP41
with Catching Holder (SP42)
SP43
SP46
x 4 pcs.
SP44
SP42
x 4 pcs.
SP48
SP49
x 4 pcs.
SP43
SP46
x 4 pcs.
SP47
x 4 pcs.
SP54
SP53
with Badge (SP54)
HTP-820
Page 7
EXPLODED VIEWS-5
SKM-820S <L> / SKM-820S <R> / SKB-820
HTP-820
TERMINAL :
Gold
(Blue / Black)
SP63
SP62
SP61
"SKM-820S <L>"
TERMINAL :
Gold
(Gray / Black)
SP66
SP65
SP64
"SKM-820S <R>"
SP67
TERMINAL :
Gold
(Brown / Black)
SP69
SP68
"SKB-820"
HTP-820
Page 8
SCHEMATIC DIAGRAM
SKW-820 :
POWERED
SUBWOOFER
A
1
2
3
4
5
BCDEFGH
P301A
P301B
P102A
Q601
NJM4558LD
3
+B
8
2
1
Q301
NJM4558LD
3
+B
8
2
1
Q601
NJM4558LD
3
2
-B
4
1
Q301
NJM4558LD
5
6
-B
4
7
R104
20K
R544
100
P631
P633
Q606
KRA103M
OR DTA124ES
P632A
Q605
2SA933S-S/R
OR KTA1267-GR
Q505
KTA1024-Y
OR 2SA949-Y/O
2SA965-Y
Q517
2SA933S-S/R
OR KTA1267-GR
Q507
KTA1024-Y
OR 2SA949-Y/O
Q604
2SA933S-S/R
OR KTA1267-GR
Q607
2SA933S-S/R
OR KTA1267-GR
Q509
KTA1024-Y
OR 2SA949-Y/O
Q602
KRC103
OR DTC124ES
D605
1SS133
OR 1SS270A
D604
1SS133
OR 1SS270A
D603
1SS133
OR 1SS270A
D651
1SS133
OR 1SS270A
D602
MTZJ2.7B
D601
MTZJ2.7B
Q541
2SC3423-Y/O
2SC2235-Y
Q506
KTC3206-Y
OR 2SC2229-Y/O
Q603
2SC1740S-S/R
OR KTC3199-GR
Q504
2SC2240-BL
Q503
2SC2240-BL
Q502
KTC3200-BL
OR 2SC1775A-F/E
Q501
KTC3200-BL
OR 2SC1775A-F/E
Q510
KTC3206-Y
OR 2SC2229-Y/O
P101
C601
10/50
C603
470/16
C602
10/50
C527
220/16
C504
220/16
C501
0.47/50
C303
47/50
C301
47/50
C955
223J
C950
104/50
C514
NC
C502
151
C506
070
C503
151
C505
020
C304
104
C934
104
C933
104
C302
101
R620
100K
R619
22K
R614
120K
R613
470K
R514
82 (1/4W)
R512
68 (1/4W)
R511
82 (1/4W)
R101
NC
R301
1K
R601
5.6K
R610
560K
R608
22
R607
22
R602
100K
R603
150K
R604
180
R605
10K
R606
10K
R609
39K
R617
1K
R616
100K
R612
39K
R615
22K
R611
820K
R651
12K {1/2W}
R510
100K
R501
1K
R522
220
R504
270
R503
5.6K
R521
220
R506
1K (1/4W)
R505
1K (1/4W)
R502
47K
R517
3.3K
R509
1K
R507
33K
R515
12K
R516
12K
R541
820
R543
100
R542
150
R527
270
R513
82 (1/4W)
R508
47 (1/4W)
R306
4.7K
R307
100K
R308
47K
R311
5.6K
R312
5.6K
R309
NC
R310/J385
JUMPER
R305
33K
18K
R304
R303
100K
R302
1M
0V
49.8V
50.3V
0V
0.6V
-1.0V
1.0V
1.6V
-1.6V
0V
0V
5.5V
5.6V
5.4V
0.3V
0.2V
0V
NAAF-8275
NAETC-8276
INPUT
NC
AMPLIFIER PC BOARDU01
INPUT TERMINAL
PC BOARD
U02
Page 9
HTP-820HTP-820
Q302
NJM4558LD
3
+B
8
2
1
Q302
NJM4558LD
5
6
-B
4
7
JL535A
BLACK
JL536A
RED
J901B
RED
RED
BLK
F901
5A/125V
P902
P531
P902A
Q606
JL601 OR JL601A
P901A
JL601 OR JL601B
Q519
2SA965-Y
Q607
Q514
KTB1369-Y
OR 2SA1930
Q516
2SA1987-R/O
Q952
KTA1046-Y/GR
OR 2SB941-P
D901
RS404L
D902
RL1N4003
OR GP104003E
D903
RL1N4003
OR GP104003E
D606
1SS133
OR 1SS270A
D904
MTZJ5.6B
D952
MTZJ15C
D951
MTZJ15C
Q513
KTD2061-Y
OR 2SC5171
Q518
2SC2235-Y
Q609
2SC1740S-S/R
OR KTC3199-GR
Q608
2SC1740S-S/R
OR KTC-3199-GR
Q515
2SC5359-R/O
Q951
KTC2026-Y/GR
OR 2SD1266-P
C604
33/35
C517
10/50
C905
5600/63
C906
5600/63
C909
22/50
C528
10/50
C526
10/50
C954
220/16
C953
220/16
C308
47/50
C952
220/16
C951
220/16
C520
224
C519
224
C904
104/100
C903
104/100
C901
472M
C307
104
C306
104
C304
104
C305
104
R621
1K
R533
3.3 {1W}
R534
100
R625
180K
R624
100K
R701
PTFL04BC222Q2N34BO
R628
330K
R629
22K
R902
820 {1W}
R901
820 {1W}
R904
1K (1/2W)
R622
10K
R623
100K
R627
680K
R626
2.2M
R903
10K
R528
390 (1/2W)
R531(1/2)
0.22 {5W}
R531(1/2)
0.22 {5W}
R526
150 (1/2W)
R972
47K
R971
10K
R312
5.6K
R315
100K
R316
1K
R314
5.6K
R313
5.6K
R954
6.8K {1/2W)
R953
6.8K {1/2W}
R952
82 {1/4W}
R951
82 {1/4W}
15.0V
-15.0V
-14.4V
-50.0V
14.4V
50.0V
51.0V
-51.0V
0V
5.6V
5.0V
3.9V
0.1V
5.6V
0V
5.5V
4 OHM
Sub Woofer W2301B
SPEAKER
T901
TF
NAETC8312
AC 120V / 60HZ
NAPS-8277
AC-H
AC-G
POWER TRANSFORMER
PC BOARD
U03
THERMAL SENSOR PC BOARD
U04
E LENT. POUR UNE PROTECTION PERMANENTE,N'UTILISER
CE SYMBOLE INDIQUE QUE LE FUSIBLE UTLISE EST
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.
QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
RATING REFER TO THE MARKING ADJACENT TO THE SYMBOL
FOR CONTINUED PROTECTION AGAINST FIRE
HAZARD,REPLACE WITH SAME TYPE FUSE. FOR FUSE
THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW OPERATING TYPE
ATTENTION
VA
ET CALIBRATION COMME INDIQUE.
D'INCENDIE, REMPLACER UNIQUEMENT
PERMANENTE CONTRE LES RISQUES
AFIN D'ASSURER UNE PROTECTION
PAR UN FUSIBLE DE MEME TYPE
AGAINST FIRE HAZARD, REPLACE
VA
FOR CONTINUED PROTECTION
AND RATING INDICATED.
ONLY WITH FUSE OF SAME TYPE
CAUTION
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
Page 10
SCHEMATIC DIAGRAM
SKW-820 :
POWERED
SUBWOOFER
HTP-820
A
1
2
3
4
5
BCDEFGH
P301A
P301B
P102A
Q601
NJM4558LD
3
+B
8
2
1
Q302
NJM4558LD
3
+B
8
2
1
Q301
NJM4558LD
3
+B
8
2
1
Q601
NJM4558LD
3
2
-B
4
1
Q301
NJM4558LD
5
6
-B
4
7
Q302
NJM4558LD
5
6
-B
4
7
JL535A
BLACK
JL536A
RED
J901B
RED
RED
BLK
F901
5A/125V
P902
R104
20K
R544
100
P631
P531
P902A
P633
Q606
KRA103M
OR DTA124ES
P632A
JL601 OR JL601A
P901A
JL601 OR JL601B
Q605
2SA933S-S/R
OR KTA1267-GR
Q505
KTA1024-Y
OR 2SA949-Y/O
Q519
2SA965-Y
Q517
2SA933S-S/R
OR KTA1267-GR
Q507
KTA1024-Y
OR 2SA949-Y/O
Q604
2SA933S-S/R
OR KTA1267-GR
Q607
2SA933S-S/R
OR KTA1267-GR
Q514
KTB1369-Y
OR 2SA1930
Q516
2SA1987-R/O
Q509
KTA1024-Y
OR 2SA949-Y/O
Q952
KTA1046-Y/GR
OR 2SB941-P
Q602
KRC103
OR DTC124ES
D901
RS404L
D902
RL1N4003
OR GP104003E
D903
RL1N4003
OR GP104003E
D605
1SS133
OR 1SS270A
D604
1SS133
OR 1SS270A
D603
1SS133
OR 1SS270A
D606
1SS133
OR 1SS270A
D651
1SS133
OR 1SS270A
D602
MTZJ2.7B
D601
MTZJ2.7B
D904
MTZJ5.6B
D952
MTZJ15C
D951
MTZJ15C
Q541
2SC3423-Y/O
Q513
KTD2061-Y
OR 2SC5171
Q518
2SC2235-Y
Q506
KTC3206-Y
OR 2SC2229-Y/O
Q609
2SC1740S-S/R
OR KTC3199-GR
Q608
2SC1740S-S/R
OR KTC-3199-GR
Q603
2SC1740S-S/R
OR KTC3199-GR
Q504
2SC2240-BL
Q503
2SC2240-BL
Q502
KTC3200-BL
OR 2SC1775A-F/E
Q501
KTC3200-BL
OR 2SC1775A-F/E
Q515
2SC5359-R/O
Q510
KTC3206-Y
OR 2SC2229-Y/O
Q951
KTC2026-Y/GR
OR 2SD1266-P
P101
C604
33/35
C517
10/50
C905
5600/63
C906
5600/63
C601
10/50
C603
470/16
C602
10/50
C909
22/50
C527
220/16
C528
10/50
C504
220/16
C501
0.47/50
C526
10/50
C954
220/16
C953
220/16
C303
47/50
C308
47/50
C301
47/50
C952
220/16
C951
220/16
C520
224
C519
224
C955
223J
C904
104/100
C903
104/100
C901
472M
C950
104/50
C514
NC
C502
151
C506
070
C503
151
C505
020
C307
104
C306
104
C304
104
C305
104
C934
104
C933
104
C302
101
R620
100K
R619
22K
R621
1K
R614
120K
R613
470K
R514
82 (1/4W)
R512
68 (1/4W)
R511
82 (1/4W)
R101
NC
R301
1K
R533
3.3 {1W}
R534
100
R625
180K
R624
100K
R701
PTFL04BC222Q2N34BO
R601
5.6K
R610
560K
R608
22
R607
22
R602
100K
R603
150K
R604
180
R605
10K
R606
10K
R609
39K
R628
330K
R629
22K
R902
820 {1W}
R901
820 {1W}
R904
1K (1/2W)
R622
10K
R623
100K
R627
680K
R626
2.2M
R903
10K
R617
1K
R616
100K
R612
39K
R615
22K
R611
820K
R651
12K {1/2W}
R510
100K
R528
390 (1/2W)
R531(1/2)
0.22 {5W}
R531(1/2)
0.22 {5W}
R501
1K
R522
220
R504
270
R503
5.6K
R521
220
R506
1K (1/4W)
R505
1K (1/4W)
R502
47K
R517
3.3K
R509
1K
R507
33K
R515
12K
R516
12K
R526
150 (1/2W)
R541
820
R543
100
R542
150
R527
270
R513
82 (1/4W)
R508
47 (1/4W)
R306
4.7K
R972
47K
R971
10K
R307
100K
R308
47K
R311
5.6K
R312
5.6K
R309
NC
R310/J385
JUMPER
R315
100K
R316
1K
R314
5.6K
R313
5.6K
R305
33K
18K
R304
R303
100K
R302
1M
R954
6.8K {1/2W)
R953
6.8K {1/2W}
R952
82 {1/4W}
R951
82 {1/4W}
15.0V
-15.0V
-14.4V
-50.0V
14.4V
50.0V
0V
49.8V
50.3V
0V
0.6V
-1.0V
1.0V
51.0V
1.6V
-1.6V
-51.0V
0V
5.6V
0V
5.0V
3.9V
0.1V
5.6V
0V
5.5V
5.6V
5.4V
0.3V
0.2V
0V
4 OHM
Sub Woofer W2301B
SPEAKER
NAAF-8275
T901
NAETC-8276
TF
INPUT
NAETC8312
AC 120V / 60HZ
NAPS-8277
AC-H
AC-G
NC
AMPLIFIER PC BOARDU01
INPUT TERMINAL
PC BOARD
U02
POWER TRANSFORMER
PC BOARD
U03
THERMAL SENSOR PC BOARD
U04
E LENT. POUR UNE PROTECTION PERMANENTE,N'UTILISER
CE SYMBOLE INDIQUE QUE LE FUSIBLE UTLISE EST
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.
QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
RATING REFER TO THE MARKING ADJACENT TO THE SYMBOL
FOR CONTINUED PROTECTION AGAINST FIRE
HAZARD,REPLACE WITH SAME TYPE FUSE. FOR FUSE
THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW OPERATING TYPE
ATTENTION
VA
ET CALIBRATION COMME INDIQUE.
D'INCENDIE, REMPLACER UNIQUEMENT
PERMANENTE CONTRE LES RISQUES
AFIN D'ASSURER UNE PROTECTION
PAR UN FUSIBLE DE MEME TYPE
AGAINST FIRE HAZARD, REPLACE
VA
FOR CONTINUED PROTECTION
AND RATING INDICATED.
ONLY WITH FUSE OF SAME TYPE
CAUTION
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
Page 11
HTP-820
A
PRINTED CIRCUIT BOARD VIEWS-1
SKW-820 : POWERED SUBWOOFER
1
2
3
4
5
AMPLIFIER PC BOARD (NAAF-8275)U01
R543
R544
R542
ECB
D952
C519
C954
P531
J372
J324
7
C953
D902
-Vee
C906
D901
C903
JL601
JL601A
Q513
R526
Q514
R508
J323
J355
C526
C520
J354
D903
J319
15
ECB
Q510
J320
+Vcc
C904
7
Q541
Q516
B
E
Q952
Q951
BCECEB
Q515
J313
B
CE
17
+Vcc
25
J345
C
15
ECB
R903
22
-Vee
17
J308
J331
J344
R952
R951
R534
R531
C906
R953
J306
J371
J322
12
R533
C952
R954
D951
C951
R901
R902
C909
R904
D904
BCD
Soldering side
J305
R514
Q506
Q507
AC_IN
Q609
J359
12
7
R627
R625
J380
R512
20
J342
J328
17
C604
R628
D606
R629
15
R528
C528
J310
J329
J311
17
R517
Q517
Q518
R541
12
J312
7
J321
JL535B
RED
JL535A
BLACK
J330
7
R624
R626
Q608
R622
C527
C514
R516
J343
J337
12
P901A
J353
Q607
R619
J302
J303
J304
Q519
R515
C502
J338
12
Q604
Q606
R623
R510
C517
C504
R507
R527
R615
Q504
C505
R509
P502A
C905
R617
J357
R513
C503
R502
J352
7
J358
R504
Q502
J373
R611
Q603
R651
Q503
C506
R522
J339
R971
led_socket
R616
R503
J309
R501
R972
-15V
Q505
Q501
C501
7
7
J334
7
C950
P632A
Q509
R521
J317
R621
Q605
R620
D605
R614
R613
R612
D651
R511
R505
R506
15
15
J333
Q601
+15V
1
J318
J327
R601
R602
R603
R609
J361
C905
D601
D602
R610
Q301
J350
R604
C602
Q602
1
J351
R316
R315
C307
C305
Q302
R309
R304
C302
R305
R306
R302
R301
P631
1
C601
7
7
R605
R606
D604
R608
R607
D603
J356
J315
J316
C301
J347
P633
C308
R313
C306
R314
C304
R312
R311
J385
J332
17
C603
8
+15V
J314
E810
8
R308
C303
J326
R303
R307
P301B
C933
8
C934
J346
J348
25138275B
NCAF-8275
1
J341
J340
Page 12
HTP-820
A
PRINTED CIRCUIT BOARD VIEWS-2
SKW-820 : POWERED SUBWOOFER
1
2
INPUT TERMINAL PC BOARD (NAETC-8276)U02
P101
P101
POWER TRANSFORMER PC BOARD (NAPS-8277)
U03
BCD
Soldering side
C955
1
NCETC-8276
25138276
Soldering side
R101
P102A
R104
R104
P301A
P902A
AC-GAC-H
AC-H
AC-G
3
J901
J902
NCPS-8277
2
22
22
C901
25138277
2356
RISK OF FIRE
810121416
AS MARKED.
-REPLACE FUSE
F901BF901A
F901
5A/125V
T901
J901B
RED
BLACK
RED
4
THERMAL SENSOR PC BOARD (NAETC-8312)U04
Soldering side
R701
1
JL601A
E701
NCETC-8312
25138312
JL601
5
HOLDER PC BOARD (NAETC-8317)U05
No PC board view
Page 13
ADJUSTMENT PROCEDURE
SKW-820 : POWERED SUBWOOFER /
ADJUSTMENT OF IDLING CURRENT
1. Before adjustment of idling current, turn the trimming resistor R544 to counter clockwise.
2. Short test point P631 for Amplifier is under active mode.
3. Connect the DC voltmeter to test point P531.
4. After turn POWER to ON, adjust the trimming resistor R544 so that the reading of voltmeter
becomes 0.25 mV.
<Note> No speaker load and No input signal.
5. Confirm the voltage of above point after five minutes.
6. When less than 4.40 mV : Readjust the trimming resistor above so that the voltage becomes 4.5 mV to 5.0 mV.
When 4.41 mV to 5.50 mV : Not necessary to adjust.
When more than 5.51 mV : Readjust the trimming resistor above so that the voltage becomes 5.0 mV to 5.5 mV.
HTP-820
Trimming resistor
R544
R544
R542
R543
C527
R541
R517
Q517
Q518
R510
Q504
R504
R651
Q503
D651
C506
Test point
P531
Amplifier PC board "NAAF-8275"
J334
R602
C933
C903
P901A
Q601
1
8
C934
17
R954
D952
AC_IN
J352
led_socket
-15V
7
ECB
J355
7
J350
17
J346
15
J354
C904
J351
J347
Q952
J353
C950
R952
R953
C953
R605
J348
D951
R603
D601
Q951
C951
D902
D903
15
C604
Q607
Q604
R617
R615
P632A
R621
D602
R604
D604
R607
R606
R608
NCAF-8275
25138275B
1
R628
ECB
R951
JL601
D606
R616
C602
R901
R619
Q606
J357
Q605
R609
R629
J373
D603
R620
Q602
R902
R623
R611
J356
D605
P633
Q609
R624
R614
P631
J341
7
R610
C909
J359
R626
R613
J340
Q603
JL601A
R627
Q608
J358
R612
R904
R625
J361
R903
D904
J380
R622
Test point
P631
C603
C906
C905
R305
R308
Q516
17
17
R306
R303
C906
J342
J329
J330
J343
R307
7
R302
-Vee
7
7
J333
R301
J345
+15V
C952
C954
D901
R972
J332
J339
P301B
J337
J338
R601
C601
J344
R971
12
12
25
Q301
1
C301
C303
J326
Q541
CE
Q510
R314
J309
R516
R515
R507
R509
R534
J312
R522
Q501
R521
C307
R508
Q506
+15V
7
C305
B
J313
J322
-Vee
J319
J320
Q507
J321
C504
R527
C503
R501
Q302
1
C304
J314
J323
R502
J372
R312
12
17
R531
P502A
C501
C519
C520
JL535B
C502
R311
RED
7
E810
J317
+Vcc
R533
+Vcc
JL535A
J324
BLACK
15
7
7
J315
J318
J331
20
J328
15
J327
C905
R304
C302
R309
7
J385
J316
8
BCECEB
Q515
22
J308
J371
J306
P531
R526
C526
Q513
Q514
E
E
C
C
J304
R511
C528
Q519
R505
R316
B
R506
C517
R315
C308
12
R514
J310
Q505
C505
R313
R512
J311
C514
Q502
R503
C306
8
J305
B
15
12
R528
J303
J302
R513
Q509
Page 14
HTP-820
1/8 PAGE
EXPLODED VIEWS PARTS LIST
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 NAMEDESCRIPTIONQ'TY PART NO. (SN)MARK
EXPLODED
SKW-820 (S) : POWERED SUBWOOFER
EXPLODED
AMPLIFIER SECTION (SKW-820)
EXPLODED
Q515 TR2SC5359-R12203082
EXPLODED
Q515 orTR2SC5359-O(1) 2203083
EXPLODED
Q516 TR2SA1987-R12203072
EXPLODED
Q516 orTR2SA1987-O(1) 2203073
EXPLODED
Q541 TR2SC3423-Y12202104
EXPLODED
Q541 orTR2SC3423-O(1) 2202103
EXPLODED
Q951 TRKTC2026-Y12203594
EXPLODED
Q951 orTRKTC2026-GR(1) 2203595
EXPLODED
Q951 orTR2SD1266-P(1) 2202754
EXPLODED
Q952 TRKTA1046-Y12203614
EXPLODED
Q952 orTRKTA1046-GR(1) 2203615
EXPLODED
Q952 orTR2SB941-P(1) 2202764
EXPLODED
<Note>
EXPLODED
When replacement the following the transistor, made from the same HFE rank as the original type.
EXPLODED
Q515, Q516, Q541, Q951, Q952
EXPLODED
A01 HEAT SINKRAD-197127160547
EXPLODED
A02 CUSHIONAF (t1.0x7x183)228141572A
EXPLODED
A03 CUSHIONAG (t1.0x7x123)228141573A
EXPLODED
A04 CUSHION(IN)1 28141574
EXPLODED
A05 SCREW3TTB+8B (BC)8838430088
EXPLODED
A05 SCREW3TTB+8B (BC)3838430088
EXPLODED
A06 BRACKETBRACKET227130745
EXPLODED
A07 ISO SHEETAC2622223025
EXPLODED
A08 SCREW3SMS8W.SW+14B (BC)2801433
EXPLODED
A10 SCREW3TTB+8B1838130088
EXPLODED
A10 SCREW3TTB+8B4838130088
EXPLODED
A10 SCREW3TTB+8B2838130088
EXPLODED
A11 RETAINER(PCB)127141912
EXPLODED
A13 COVER---128184894
EXPLODED
A15 RETAINER(AC)127141913
EXPLODED
A16 SCREW3TTB+12B (BC)2 838430128
EXPLODED
A101 REAR PANEL(MD)127123338A
EXPLODED
A102 BUSHINGS-RELIEF #22711 27300750
EXPLODED
A103 KNOB(VOL)128326201
EXPLODED
F901 FUSE5A-UL/T-2371252164
EXPLODED
P902 AC CORDAS-UC-21253333VOL
EXPLODED
P902 orAC CORDAS-UC-2(1) 253368LTK
EXPLODED
T901 P TRANSNPT-1495D12301745
EXPLODED
U01 AMPLIFIER PC BOARDNAAF-8275-1B11B032575-1B
EXPLODED
U02 INPUT TERMINAL PC BOARDNAETC-8276-1B11B032576-1B
<Notes>
<L> : Lch
<R> : Rch
!
!
!
!
!
!
!
!
!
Page 15
EXPLODED
U03POWER TRANSFORMER PC BOARD NAPS-8277-1B11B032577-1B
EXPLODED
U04THERMAL SENSOR PC BOARD NAETC-8312-1B11B032512-1B
EXPLODED
U05HOLDER PC BOARDNAETC-8317-1B11B032517-1B
EXPLODED
SKW-820 (S) : POWERED SUBWOOFER
EXPLODED
SPEAKER SECTION (SKW-820)
EXPLODED
SP01CABINET ASS'YSKW-820 (S)1000-SKW820GYSER
EXPLODED
SP02CLOTH FRAME ASS'YSKW-8202113-03W820-00
EXPLODED
SP04PLASTIC FOOT---4249-W82001B-10
EXPLODED
SP05CUSHION1.5T x 19 x 19 (For FOOT)4442-915103-00
EXPLODED
SP06WOOD SCREW3 x 20 BIND (For FOOT)4411-B83020AB1
EXPLODED
SP07NAME PLATE(SKW-820 / ONKYO)1D231-W82001B-20
EXPLODED
SP08WOOFER8" (20cm) / 6 ohm 60 W (ONKYO)2 W20176D
EXPLODED
SP09WOOD SCREW4STT + 20A (FOR AMP x 10 / SP x 16)26 837440204
SP11SCREW4 x 25 (For POWER TRANSFORMER)8412-D840250B1
EXPLODED
SP12SPEAKER CORD---1312-SKW820-00
EXPLODED
SP13BUTYLMS665 18 x 18 x 6T2 560-6MS665-00
EXPLODED
SP14LED HARNESS ASS'Y---1335-SKW520-00
EXPLODED
SP15CUSHIONPEF 5 x 220 x 1T (For CLOTH FRAME)2442-101205-00
EXPLODED
SP16UL LABEL(For AMP. REAR PANEL)1 660-HTS870-00
EXPLODED
SKF-820F (S) <L> / <R> : FRONT SPEAKERS
EXPLODED
SP20aCOMPLETE UNIT"SKF-820F (S) <L>"1000-SKF820FLGY<L>
EXPLODED
SP20bCOMPLETE UNIT"SKF-820F (S) <R>"1000-SKF820FRGY<R>
EXPLODED
SP21aCABINET ASS'YSKF-820F (S) <L> (Without TERMINAL)1000-SKF820LGYSER<L>
EXPLODED
SP21bCABINET ASS'YSKF-820F (S) <R> (Without TERMINAL)1000-SKF820RGYSER<R>
EXPLODED
SP22CATCHING HOLDER---4D230-DN3X01B-01
EXPLODED
SP23WOOFERW1367A (ONKYO)2W1367A
EXPLODED
SP24TWEETERTW3208A (ONKYO)1 TW3208A
EXPLODED
SP26SCREW4 x 16 HEX 8.3ED (For WOOFER)8411-H84016AB2
EXPLODED
SP27SCREW3.5 x 16 HEX 7.0ED (For TWEETER)4411-H83516AB1
EXPLODED
SP28NETWORK ASS'Y---1311-870THX-00
EXPLODED
SP29SCREW3.5 x 20 BIND (For N / W)4411-B83520AB1
EXPLODED
SP30aTERMINALWHITE / BLACK1332-H8180G-20<L>
EXPLODED
SP30bTERMINALRED / BLACK1332-H8180G-00<R>
EXPLODED
SP31aSPEC LABEL (L)---1600-KF820L-00<L>
EXPLODED
SP31bSPEC LABEL (R)---1600-KF820R-00<R>
EXPLODED
SP33GRILLE ASS'Y(WITH GRILLE CLOTH and BADGE)1D201-F82001S-90
EXPLODED
SP34BADGEONKYO1D213-M52001B-20
EXPLODED
SKC-820C (S) : CENTER SPEAKER
EXPLODED
SP40COMPLETE UNIT"SKC-820C (S)"1000-SKC820CGY
EXPLODED
SP41CABINET ASS'YSKC-820C (S) (Without TERMINAL)1000-SKC820GYSER
EXPLODED
SP42CATCHING HOLDER---4D230-DN3X01B-01
EXPLODED
SP43WOOFERW1069A (ONKYO)2W1069A
EXPLODED
SP44TWEETERTW3208A (ONKYO)1 TW3208A
EXPLODED
SP46SCREW4 x 16 HEX 8.3ED (For WOOFER)8411-H84016AB2
EXPLODED
SP47SCREW3.5 x 16 HEX 7.0ED (For TWEETER)4411-H83516AB1
EXPLODED
SP48NETWORK ASS'Y---1311-870THX-00
EXPLODED
SP49SCREW3.5 x 20 BIND (For N / W)4411-B83520AB1
EXPLODED
SP50TERMINALGREEN / BLACK1332-H8180G-30
EXPLODED
SP51SPEC LABEL---1600-SKC820-00
EXPLODED
SP53GRILLE ASS'Y(WITH GRILLE CLOTH and BADGE)1D201-C82001S-90
2/8 PAGE
Page 16
EXPLODED
T
SP54BADGEONKYO1D213-M52001B-20
EXPLODED
SKM-820S (S) <L> / <R> : SURROUND SPEAKERS
EXPLODED
SP61COMPLETE UNIT"SKM-820S (S) <L>"1000-SKM820SLGY<L>
EXPLODED
SP62SPEC LABEL (L)---1 600-KM820L-00<L>
EXPLODED
SP63TERMINALBLUE / BLACK1332-H8108G-50<L>
EXPLODED
SP64COMPLETE UNIT"SKM-820S (S) <R>"1 000-SKM820SRGY<R>
EXPLODED
SP65SPEC LABEL (R)---1600-KM820R-00<R>
EXPLODED
SP66TERMINALGRAY / BLACK1332-H8108G-40<R>
EXPLODED
SKB-820 (S) : SURROUND BACK SPEAKER
EXPLODED
SP67COMPLETE UNIT"SKB-820 (S)"1000-SKB820GY
EXPLODED
SP68SPEC LABEL---1600-SKB820-00
EXPLODED
SP69TERMINALBROWN / BLACK1 332-H8108G-10
HTP-820
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.
3/8 PAGE
SKW-820
U01AMPLIFIER PC BOARD (NAAF-8275-1B)
U02INPUT TERMINAL PC BOARD (NAETC-8276-1B)
U03POWER TRANSFORMER PC BOARD (NAPS-8277-1B)
U04THERMAL SENSOR PC BOARD (NAETC-8312-1B)
U05HOLDER PC BOARD (NAETC-8317-1B)
CIRCUIT NO.PART NAMEDESCRIPTIONQ'TY PART NO. (SN)MARK
PWB
Q301 ICNJM4558L-D122240293
PWB
Q302 ICNJM4558L-D122240293
PWB
Q601 ICNJM4558L-D122240293
PWB
Q501 TRKTC3200-BL12215896
PWB
Q501 orTR2SC1775A-E(1) 2210755
PWB
Q501 orTR2SC1775A-F(1) 2210756
PWB
Q502 TRKTC3200-BL12215896
PWB
Q502 orTR2SC1775A-E(1) 2210755
PWB
Q502 orTR2SC1775A-F(1) 2210756
PWB
Q503 TR2SC2240-BL1 2211406
PWB
Q504 TR2SC2240-BL1 2211406
PWB
Q505 TRKTA1024-Y1 2215844
PWB
Q505 orTRKTA1024-O(1) 2215843
PWB
Q505 orTR2SA949-Y(1) 2211354
PWB
Q505 orTR2SA949-O(1) 2211353
PWB
Q506 TRKTC3206-Y12215854
PWB
Q506 orTRKTC3206-O(1) 2215853
PWB
Q506 orTR2SC2229-Y(1) 2211634
PWB
Q506 orTR2SC2229-O(1) 2211633
PWB
Q507 TRKTA1024-Y1 2215844
PWB
Q507 orTRKTA1024-O(1) 2215843
PWB
Q507 orTR2SA949-Y(1) 2211354
PWB
Q507 orTR2SA949-O(1) 2211353
Page 17
PWB
Q509 TRKTA1024-Y1 2215844
PWB
Q509 orTRKTA1024-O(1) 2215843
PWB
Q509 orTR2SA949-Y(1) 2211354
PWB
Q509 orTR2SA949-O(1) 2211353
PWB
Q510 TRKTC3206-Y12215854
PWB
Q510 orTRKTC3206-O(1) 2215853
PWB
Q510 orTR2SC2229-Y(1) 2211634
PWB
Q510 orTR2SC2229-O(1) 2211633
PWB
Q513 TRKTD2061-Y1 2203434
PWB
Q513 orTR2SD1763-E(1) 2201945
PWB
Q513 orTR2SD1763A-D(1) 2202034
PWB
Q513 orTR2SC5171(1) 2203010
PWB
Q514 TRKTB1369-Y12203424
PWB
Q514 orTR2SB1186-E(1) 2201935
PWB
Q514 orTR2SB1186A-D(1) 2202024
PWB
Q514 orTR2SA1930(1) 2203000
PWB
Q517 TR2SA933S-S12213355
PWB
Q517 orTR2SA933S-R(1) 2213354
PWB
Q517 orTRKTA1267-GR(1) 2215995
PWB
Q518 TR2SC2235-Y1 2211654
PWB
Q519 TR2SA965-Y1 2211644
PWB
Q602 TRKRC103M1 2215810
PWB
Q602 orTRDTC124ES(1) 2213160
PWB
Q603 TR2SC1740S-S1 2213285
PWB
Q603 orTR2SC1740S-R(1) 2213284
PWB
Q603 orTRKTC3199-GR(1) 2215864
PWB
Q604 TR2SA933S-S12213355
PWB
Q604 orTR2SA933S-R(1) 2213354
PWB
Q604 orTRKTA1267-GR(1) 2215995
PWB
Q605 TR2SA933S-S12213355
PWB
Q605 orTR2SA933S-R(1) 2213354
PWB
Q605 orTRKTA1267-GR(1) 2215995
PWB
Q606 TRKRA103M1 2215780
PWB
Q606 orTRDTA124ES(1) 2212600
PWB
Q606 orTRRN2203(1) 2213580
PWB
Q607 TR2SA933S-S12213355
PWB
Q607 orTR2SA933S-R(1) 2213354
PWB
Q607 orTRKTA1267-GR(1) 2215995
PWB
Q608 TR2SC1740S-S1 2213285
PWB
Q608 orTR2SC1740S-R(1) 2213284
PWB
Q608 orTRKTC3199-GR(1) 2215864
PWB
Q609 TR2SC1740S-S1 2213285
PWB
Q609 orTR2SC1740S-R(1) 2213284
PWB
Q609 orTRKTC3199-GR(1) 2215864
PWB
<Note>
PWB
When replacement the following the transistor, made from the same HFE rank as the original type.