Onkyo HTP-550B, HTP-550C Service Manual
SERVICE MANUAL
Q
Q
3
7
SERVICE MANUAL
1
6
3
7.1-CH HOME THEATER SPEAKER PACKAGE
5
1
5
0
8
9
2
4
9
Ref. No. 4011
042007
2
8
9
HTP-550
9
MODEL HTP-550(B)/(S)
TEL 13942296513 QQ 376315150 892498299
Surround Back Speakers (L / R)
TEL
"SKB-550"
13942296513
B MDD
B MDC
B MPA
Front Speakers (L / R)
"SKF-550F"
Center Speaker
"SKC-550C"
Black and Silver models
120V AC, 60Hz
120V AC, 60Hz
230-240V AC, 50Hz
Q
Q
3
--S MDC
S MPA
7
Surround Speakers (L / R)
"SKM-550S"
5
1
5
1
3
6
--120V AC, 60Hz
230-240V AC, 50Hz
0
Powered Subwoofer
2
9
8
"SKW-550"
8
9
4
2
9
TEL 13942296513 QQ 376315150 892498299
9
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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.
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HTP-550
EXPLODED VIEWS-1
Q
TEL 13942296513 QQ 376315150 892498299
Q
SKW-550 : POWERED SUBWOOFER
TEL
3
P901
A102
A103
A104
x 2 pcs.
7
13942296513
6
A05
x 2 pcs.
A02
3
1
SP11
x 10 pcs.
A03
A06
A02
U06
5
A101
1
A07
5
S901
Q516
0
<Note>
S901 (POWER SWITCH) and U05 : MPA type only.
U05
A08
x 2 pcs.
A05
Q541
Q515
A07
A01
A11
Q
Q
E801
3
SP12
x 4 pcs.
7
8
6
3
1
9
5
1
2
5
0
4
9
2
8
4
9
Refer to "EXPLODED VIEWS-2"
8
9
8
2
2
9
9
9
TEL 13942296513 QQ 376315150 892498299
9
<Note>
F901C (LABEL) : MPA type only.
Part No. (SN) ---> Refer to
"PRINTED CIRCUIT BOARD PARTS LIST".
w
w
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.
x
A05
x 5 pcs.
i
a
U01
o
SP13
x 2 pcs.
F901C
y
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1
6
3
.
U03
T901
c
o
F901
HTP-550
m
HTP-550
EXPLODED VIEWS-2
Q
TEL 13942296513 QQ 376315150 892498299
Q
SKW-550 : POWERED SUBWOOFER
TEL
3
7
13942296513
6
3
1
5
1
5
0
Q
Q
3
7
5
2
1
8
6
9
SP01a - d : SPK SYSTEM ASS’Y (All)
SP01e / f : CABINET ASS’Y
(Without AMP unit, Speaker unit and Power transformer)
1
3
5
0
4
8
9
9
8
2
4
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2
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2
9
9
9
TEL 13942296513 QQ 376315150 892498299
9
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x
SP08
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1
6
3
SP06
SP07
x 6 pcs.
.
SP02
x 4 pcs.
SP04
x 4 pcs.
c
o
HTP-550
m
HTP-550
EXPLODED VIEWS-3
Q
TEL 13942296513 QQ 376315150 892498299
Q
SKF-550F <L> / SKF-550F <R>
SP33a / SP33b
SP32a / SP32b
Lch
TERMINAL :
White / Black
TEL
3
7
Rch
TERMINAL :
Red / Black
13942296513
6
3
1
5
1
5
SP21a / SP21b / SP21c / SP21d : SPK SYSTEM ASS’Y (ALL)
0
Q
SP23
Q
3
7
6
8
3
1
9
5
1
2
5
0
4
8
9
9
4
2
9
8
2
SP34a / SP34b
8
2
9
9
9
TEL 13942296513 QQ 376315150 892498299
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SP23
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SP22
x 4 pcs.
o
SP24
HTP-550
m
HTP-550
EXPLODED VIEWS-4
Q
TEL 13942296513 QQ 376315150 892498299
Q
SKC-550C
SP52
TERMINAL :
Green / Black
TEL
3
7
SP53
13942296513
6
3
1
5
1
5
5
1
2
5
0
SP41a / SP41b : SPK SYSTEM ASS’Y (ALL)
SP43
Q
Q
3
7
8
6
3
9
1
0
4
8
9
9
2
8
4
9
2
8
2
9
9
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TEL 13942296513 QQ 376315150 892498299
9
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SP43
o
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6
3
SP42
x 4 pcs.
.
SP44
c
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HTP-550
SP54a / SP54b
m
HTP-550
EXPLODED VIEWS-5
Q
TEL 13942296513 QQ 376315150 892498299
Q
SKM-550S <L> / SKM-550S <R> / SKB-550 <L> / SKB-550 <R>
TERMINAL :
Blue / Black
TEL
3
7
13942296513
6
SP61a / SP61b SP63a / SP63b
3
1
5
1
TERMINAL :
Gray / Black
5
5
2
1
0
SP64SP62
Q
Q
3
"SKM-550S <R>""SKM-550S <L>"
7
8
6
3
9
1
5
4
0
9
<Note>
Cannot remove the speaker grill.
8
9
8
2
4
9
2
8
2
9
9
9
TEL 13942296513 QQ 376315150 892498299
9
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TERMINAL :
Brown / Black
x
i
a
SP65a / SP65b SP67a / SP67b
SP68SP66
TERMINAL :
Tan / Black
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3
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"SKB-550 <R>""SKB-550 <L>"
m
HTP-550
HTP-550
A
BCDEFGH
SCHEMATIC DIAGRAM
SKW-550 : POWERED SUBWOOFER
3
2
R304
7
Q301(1/2)
NJM4558LD
8
4
R305
33K
C303
NC
27K
3
1
9
4
6
R307
47K
R306
2.2K
2
P501B
NC
2
3
J316
C502
(1/2W)
12K
1SS133
NC
9
R651
D651
R302
C302
47/50
20KB
3
47K
R303
Q
1
LINE INPUT
P301
C955
223J
E801
Q
R301
1K
224
C301
(MPA)
OUTPUT
LEVEL
TEL 13942296513 QQ 376315150 892498299
2
R951
(2W)
C951
3
T
E
220/16
L
C952
220/16
3.3K
POWER NEED TO CONFIRM
D951
MTZJ15C
1
D952
R952
MTZJ15C
(2W)
3.3K
C501
47/50
C527
1/50
6
1
R501
1K
R502
47K
R510
100K
5
5
U01
R505
1K
(1/4W)
Q501
2SC2240-BL
0
C503
224J
R521
220
1
D501
MTZJ5.6B
1
MAIN PC BOARD
R506
1K
(1/4W)
Q502
2SC2240-BL
-0.6
R522
220
3
R503
5.6K
Q503
2SC2240-BL
R504
2.2K
R509
1K
R527
270
C504
220/16
5
C505
020
R507
33K
0
R508
47
(1/4W)
R511
82
(1/4W)
Q505
2SA949-Y
Q507
2SA949-Y
0
NAAF-8829
Q509
2SA949-Y
070
2SC2229-Y
Q506
2SC2229-Y
R512
68
(1/4W)
C506
R515
12K
Q
R516
12K
Q510
R513
82
(1/4W)
R514
82
R541
820
R542
150
Q
R544
100B
ADJUST.
IDLING
(1/4W)
R517
3.3K
1
-1
Q541
2SC3423
8
<Note>
NC : No mount of parts.
Q518
2SC2235-Y
1.6V
Q517
2SA933S-S
C517
10/50
10/50
C528
3
6
7
3
R543
180
-1.6
Q519
2SA965-Y
C514
101
R528
390
(1/2W)
C526
10/50
Q513
2SC5171
1
Q514
2SA1930
9
R526
82
(1/2W)
R531
0.22
(5W)
2SA1987-O/R
1
5
Q516
Q515
2
2SC5359-O/R
0
5
R533
3.3
(1W)
C519
224
C520
224
P531
NOTE
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
4
SPEAKER
9
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.
JL535A/B
9
8
U03
8
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.
4
2
POWER TRANSFORMER
PC BOARD
MPA
ONLY
T901
NPT-1539P
P901A
NAPS-8831
9
1.6A/250V
F901
!
2
8
P907A
P906A
9
9
2
POWER SWITCH
U05
PC BOARD
P906B
9
NASW-8833
MPA ONLY
S901
9
TEL 13942296513 QQ 376315150 892498299
POWER
SWITCH
4
5
C601
10/50
5.6K
R601
w
100K
R602
Q301(2/2)
NJM4558LD
5
6
R603
D601
MTZJ2.7B
180
R604
C602
10/50
w
8
4
150K
7
D602
MTZJ2.7B
w
D603
1SS133
R605
22
C603
470/16
P633
39K
NC
.
R610
560K
R609
Q602
KRC103M
820K
120K
R614
39K
x
R611
R612
Q603
2SC1740S-S
470K
R613
D605
1SS133
C950
104/50
i
Q604
2SA933S
R617
1K
R615
22K
a
R619
R616
100K
22K
R620
100K
LED
Q605
2SA933S
R621
1K
P632A
o
REDGREEN
Q606
KRA103M
P631
2SA933S
y
Q607
R622
10K
5.0
R624
100K
R623
100K
Q608
2SC1740S-S
R626
2.2M
u
0.05
0.6
R625
180K
1
R627
680K
C604
33/35
6
Q609
NC
D606
1SS133
R628
330K
R629
NC
R701
NC
3
+5.6V
R904
1K
(1/2W)
10K
D904
MTZJ5.6B
.
R903
820
820
C909
22/50
R901
(1W)
R902
(1W)
D902
RL1N4003
or GP104003E
D903
RL1N4003
or GP104003E
c
-56.5V
o
+56.5V
D901
D3SBA20
C905
5600/71(MPA)
5600/63(MDD)
C906
m
5600/71(MPA)
5600/63(MDD)
C903
C904
104J/100
(MPA TYPE)
104J/100
(MPA TYPE)
U03
P903A
P902A
POWER TRANSFORMER
PC BOARD
MDD/MDC
ONLY
T901
NPT-1539D-1562D
P901A
NAPS-8831
5A/125V
F901
J901
MD
P902A
P901
AC 230-240V / 50Hz
P901
AC 120V / 60Hz
HTP-550
A
BCD
PRINTED CIRCUIT BOARD VIEWS-1
SKW-550 : POWERED SUBWOOFER
Q
1
Q
3
6
MAIN PC BOARD (NAAF-8829)U01
7
Component side
TEL 13942296513 QQ 376315150 892498299
2
BCE
B
CE
Q541
3
TEL
4
13942296513
R701
3
Q515
22
J323
17
+Vcc
J334
CEB
25
E701
J308
Q516
1
5
25138829A
NCAF-8829
1
J307
J314
J324
12
R531
R533
C906
C951
J955
R952
7
C952
D952
C955
C519
D951
P301
R545
R544
P531
J325
J332
7
C906
D902
1
Q513
R526
-Vee
J322
J956
P301
Q514
R508
C520
7
R543
R542
C526
J320
J352
R901
5
J306
ECB
ECB
15
R514
Q510
Q506
Q507
J321
+Vcc
J340
7
C903 C904
RED REDBLK
R902
R301
0
R512
JL535B
RED
Q
20
J330
J333
17
R951
P903A
D903
C301
C527
15
R528
C528
J331
17
R517
Q517
Q518
R541
12
J312
J313
7
J319
Q
JL535A
BLACK
C909
J311
D901
R302
J303
J304
C514
R516
C502
J351
R510
D501
J305
Q519
R515
3
R904
R903
D904
C517
C504
P502A
12
Q504
R507
7
R509
R527
C905
8
R513
C505
C503
R502
6
J346
R628
D606
R629
R504
Q502
3
R625
R627
J347
C604
R651
Q503
C506
R522
1
C950
Q609
9
R503
J310
Q501
R501
C501
R321
C905
5
7
Q604
R623
R624
R626
Q608
R302
20
Q509
Q505
1
J318
R619
Q606
2
D651
R511
R505
R506
R521
5
7
7
J338
R615
Q607
J316
J326
J329
J348
J301
J302
Q302
0
J349
J350
7
4
Q303
7654 3218
7
R304
R303
J327
7
R616
R617
J341
R611
Q603
R622
C302
81234567
R306
R307
C303
R305
8
Q301
R610
9
R319
C313
R316
R312
R314
C311
R315
J309
E801
7
9
R621
P632A
J337
7
P631
C316
R320
R317
C314
C312
R313
1
2345 678
R609
Q602
J344
C315
2
R601
D602
C603
P633
Q605
R620
D605
R614
R613
R612
8
P912
R311
P911
C601
R602
4
C602
R604
R603
D601
D603
R605
J335
J342
2
9
J336
8
P301A
2
9
9
9
TEL 13942296513 QQ 376315150 892498299
9
5
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