Onkyo HTP-680 Service Manual
SERVICE MANUAL
SERVICE MANUAL
7.1-CH HOME THEATER SPEAKER PACKAGE
MODEL HTP-680(B)
Powered Subwoofer
HTP-680
Ref. No. 4231
062010
"SKW-770"
Front Speakers (L / R)
"SKF-680"
Center Speaker
"SKC-680"
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.
Surround Speakers (L / R)
"SKR-680"
Black model
B MDC
120V AC, 60Hz
Surround Back Speakers (L / R)
"SKB-680"
ADJUSTMENT PROCEDURE
SKW-770 : POWERED SUBWOOFER / ADJUSTMENT OF IDLING CURRENT
[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 power cord into the AC outlet.
5. Confirm the voltage of above point after 6 minutes to 8 minutes. (Heat running)
6. 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.
7. Disconnect the power cord from the AC outlet.
8. Disconnect the DC voltmeter.
HTP-680
Trimming resistor
R544
Test point
P531
Test point
P531
100 ohm
(1/4W)
<Fig-1>
DC voltmeter
MAIN PC board ass'y "NAAF-8829"
Test point
P631
Short
EXPLODED VIEWS-1
SKW-770 : POWERED SUBWOOFER
P901
A05
x 2 pcs.
A102
A103
HTP-680
SP11
x 10 pcs. (NSP)
A02
A104
x 2 pcs.
A02
A03
A06
U01
A05
x 5 pcs.
U06
A101
A07
Q516
A08
x 2 pcs.
A05
Q541
A01
A07
A11
Q515
E801
Refer to "EXPLODED VIEWS-2"
SP12
x 4 pcs.
(NSP)
SP13
x 2 pcs.
U03
HTP-680
T901
F901
HTP-680
EXPLODED VIEWS-2
SKW-770 : POWERED SUBWOOFER
SP01a (Subwoofer ass’y)
(All)
SP01b (Subwoofer ass’y)
(Without AMP unit, Speaker unit and Power transformer)
SP08
SP06
SP02
x 4 pcs.
HTP-680
EXPLODED VIEWS-3
SKF-680 / SKC-680 / SKR-680 / SKB-680
HTP-680
<Note>
Cannot remove the speaker grill.
TERMINAL :
White / Black
"SKF-680 <L>" "SKF-680 <R>"
SP20
TERMINAL :
Red / Black
NOT MAGNETICALLY SHIELDED
SP41 SP43
SP23
TERMINAL :
Green / Black
SP51
SP31
"SKC-680"
NOT MAGNETICALLY SHIELDED
SP53
TERMINAL :
Blue / Black
TERMINAL :
Gray / Black
TERMINAL :
Brown / Black
TERMINAL :
Tan / Black
HTP-680
"SKR-680 <R>""SKR-680 <L>"
NOT MAGNETICALLY SHIELDEDNOT MAGNETICALLY SHIELDED
"SKB-680 <R>""SKB-680 <L>"
HTP-680
A
SCHEMATIC DIAGRAMS-1
SKW-770 : POWERED SUBWOOFER
1
2
3
LINE INPUT
P301
C955
223J
E801
R301
1K
C301
C951
220/16
C952
220/16
224
R302
(MPP)
OUTPUT
LEVEL
C302
47/50
20KB
47K
R951
3.3K
POWER NEED TO CONFIRM
D951
MTZJ15C
D952
R952
MTZJ15C
(2W)
3.3K
R303
(2W)
3
2
27K
R304
Q301(1/2)
NJM4558LD
8
4
R305
33K
C303
NC
BCDEFGH
NOTE
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
NAAF-8829
MAIN PC BOARD
U01
47K
R307
2.2K
R306
J316
<Note>
1
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.
NC : No mount of parts.
CAUTION
FOR CONTINUED PROTECTION
AGAINST FIRE HAZARD, REPLACE
ONLY WITH FUSE OF SAME TYPE
VA
AND RATING INDICATED.
ATTENTION
AFIN D'ASSURER UNE PROTECTION
PERMANENTE CONTRE LES RISQUES
D'INCENDIE, REMPLACER UNIQUEMENT
VA
PAR UN FUSIBLE DE MEME TYPE
ET CALIBRATION COMME INDIQUE.
THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW 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
E LENT.POUR UNE PROTECTION PERMANENTE,N'UTILISER
QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.
P501B
NC
C502
NC
(1/2W)
R651
12K
D651
1SS133
C501
47/50
C527
1/50
R501
1K
R502
47K
R510
100K
R505
1K
(1/4W)
Q501
2SC2240-BL
0
C503
224J
R521
220
D501
MTZJ5.6B
R506
1K
(1/4W)
Q502
2SC2240-BL
-0.6
R522
220
R503
5.6K
Q503
2SC2240-BL
R504
2.2K
R509
1K
R527
270
C504
220/16
C505
020
R507
33K
0
R508
47
(1/4W)
R511
82
(1/4W)
Q505
2SA949-Y
Q507
2SA949-Y
2SA949-Y
070
2SC2229-Y
Q506
2SC2229-Y
R512
68
(1/4W)
Q509
C506
R515
12K
R516
12K
Q510
R513
82
(1/4W)
R514
82
R541
820
R542
150
R544
100B
ADJUST.
IDLING
(1/4W)
R517
3.3K
1
-1
Q541
2SC3423
Q517
2SA933S-S
R543
180
-1.6
C517
10/50
C514
101
Q518
2SC2235-Y
1.6V
C528
Q519
2SA965-Y
(1/2W)
10/50
R528
390
C526
10/50
Q513
2SC5171
Q514
2SA1930
Q515
R526
82
(1/2W)
R531
0.22
(5W)
2SA1987-O/R
Q516
2SC5359-O/R
R533
3.3
(1W)
C519
224
C520
224
P531
SPEAKER
JL535A/B
!
4
5
10/50
5.6K
C601
R601
100K
Q301(2/2)
NJM4558LD
5
6
D601
MTZJ2.7B
180
R602
R604
C602
10/50
8
4
R603
150K
7
D602
MTZJ2.7B
D603
1SS133
R605
22
C603
470/16
P633
39K
R609
NC
Q602
KRC103M
R610
560K
820K
120K
R614
39K
R611
R612
Q603
2SC1740S-S
470K
R613
D605
1SS133
C950
104/50
Q604
2SA933S
R617
1K
R615
22K
R619
22K
R620
100K
R616
100K
D607
1SS133
Q605
2SA933S
R621
1K
P632A
REDBLUE
Q606
KRA103M
P631
2SA933S
Q607
R622
10K
5.0
R624
100K
R623
100K
Q608
2SC1740S-S
R626
2.2M
0.05
0.6
R625
180K
R627
680K
C604
33/35
Q609
NC
D606
1SS133
R628
330K
R629
NC
R701
NC
+5.6V
R904
1K
(1/2W)
10K
D904
MTZJ5.6B
R903
820
820
C909
22/50
R901
(1W)
R902
(1W)
-56.5V
D902
RL1N4003
or GP104003E
D903
RL1N4003
or GP104003E
+56.5V
D901
D3SBA20
C905
5600/71(MPP)
5600/63(MDD)
C906
5600/71(MPP)
5600/63(MDD)
C903
C904
104J/100
(MPP TYPE)
104J/100
(MPP TYPE)
U03
P903A
POWER TRANSFORMER
PC BOARD
MDC
ONLY
T901
NPT-1578D
P901A
NAPS-8831
5A/125V
F901
J901
MD
P902A
P901
AC 120V / 60Hz
LED
HTP-680
A
PRINTED CIRCUIT BOARD VIEWS-1
SKW-770 : POWERED SUBWOOFER
1
U01
2
3
4
5
MAIN PC BOARD (NAAF-8829)
Component side
R545
NCAF-8829
25138829E
2
BCE
J308
Q515
22
B
J323
CE
17
J334
R531
R533
C906
25
Q516
E701
Q541
+Vcc
CEB
R701
J314
12
R952
D952
C955
J307
J324
J955
7
C952
C951
P301
C519
D951
D902
R544
R526
J332
7
C906
P301
P531
J325
-Vee
Q513
Q514
J956
R508
J322
7
C526
C520
J352
R901
BCD
C315
C316
76543218
C314
C312
R313
E801
R609
Q602
J337
7
P631
1
2345678
R614
J344
P911
C601
R601
R602
C602
R604
R603
D601
D602
D603
R605
C603
P633
Q605
R620
D605
R613
R612
J342
P912
R311
J335
P301A
J336
C303
J327
R610
R616
J341
Q603
C313
8123 4567
R316
R312
R314
C311
R315
7
R306
R307
R305
Q301
7
R621
P632A
R320
R319
R317
J309
R543
R542
J306
ECB
ECB
R514
Q510
Q506
Q507
J321
J320
J340
C903 C904
RED REDBLK
R301
15
JL535B
RED
+Vcc
7
R951
R902
C301
R528
R512
J333
17
P903A
D903
R541
C527
15
12
C528
J312
7
JL535A
BLACK
J330
J331
17
R517
Q517
Q518
J311
J313
J319
20
C909
D901
R302
J303
J304
C514
C502
R510
J305
Q519
R516
J351
R904
D501
C517
R515
C504
12
R903
D904
Q504
R513
R507
C503
R502
R527
P502A
C905
J346
R628
C505
R509
D606
R629
R504
Q502
J347
C604
R625
R627
R651
Q503
C506
R522
C950
Q609
R503
J310
R501
C501
R321
C905
Q505
Q501
7
R623
R624
R626
Q608
R302
Q509
J318
R615
Q606
R511
R505
R506
J338
R619
R521
J316
7
Q604
Q607
D651
20
J326
7
J329
J348
J349
J302
D607
7
J301
Q302
R304
R303
J350
Q303
7
R617
R611
R622
C302
Loading...