Onkyo A-9555 Schematic
A-9555
downloaded from http://receiverfaq.ru/
A
BLOCK DIAGRAM
PHONO
EQUALIZER AMP.
1
PHONO
CD
TUNER
2
IN
TAP E
INPUT SELECTOR
51
52
53
54
55
56
57
58
59
60
61
BCDEFGH
NJW1157
42
41
+
44
43
+
27
29
28
30
46
80
45
88
48
47
81
89
82
90
87
95
83
91
VOLU ME
LOUDNESS
LOUDNESS
A
A
OUT
3
IN
MD
62
63
64
65
66
67
21
23
25
22
24
26
84
92
85
93
86
94
OUT
68
69
4
LINE
HDD
70
71
73
73
74
MICROPROCESSOR
REM IN
BACK UP
+
KEY / INPUT SELECTOR
MD
TUNER
TA PE
PHONO
CD
5
REMOTE SENSOR
RI
INTERFACE
A-9555
L
SPEAKERS A
R
TONE
1
TONE
2
3
8
4
5
6
PURE
DIRECT
RELAY
MUTING
VL DIGITAL
MUTE
LPF
SPEAKER
DETECTION
SPEAKER
DETECTION
HEAD PHONE AMP.
L
SPEAKERS B
R
RELAY
MUTE
PHONES
7
PHONO
HDD
LINE
SUB TRANS.
MICROPROCESSOR
POWER AMP.
POWER AMP.
LOUDNESS
VOLUME
PURE DIRECT
STANDBY
RI
DRIVER AMP.
MODULATOR
PHONO AMP.
SELECTOR
ANALOG
RELAY
+5.6V
5V 12V
+/-15V+/-7V
+/-15V
+12V
RED
ORANGE
BLUE
BROWN
GREEN
POWER
FUSE
MAIN TRANS.
AC IN
A-9555
A
SCHEMATIC DIAGRAMS-1
POWER AMPLIFIER SECTION
1
Lch
C403
C401
47/50
221
TF-C
220K
R403
To NAAF-8708(2/2)
(SD-2 : D2)
2
Lch
GND
Rch
M_GND
R401
2.2K
27K
R437
HN3C51F-BL
R405
D401
UDZS5.6B
56K
C409
Q401A
R413
47/25
6
390K
R435
R407
R409
470
BCDEFGH
4.7K
C431
681
1
2
R427
R42947R431
47
100K
1K
R483
R411
R493
1.2K
100
123
2SC2712-GR
2.2K
R433
-13V
4.7K
3
4
R423
Q403
C407
47/50
R421
5
47K
470
DC OFFSET
ADJUST.
R419
RN2404
Q621
Q419
RN1441
2.2K
C411
TF-C
+13V
NC
R651
15K
R653
15K
R657
R575
R577
47K
560K
(180K)
R415
8.2K
(6.8K)
104
220K
R641
C435
100/25
220
R495
C437
100/25
R497
5.6K
R441
27K
R443
27K
R445
331
C585
Q411
2SC2713
220
Q405A
HN3A51F
6
HN3A51F
R417
0
R489
12K
2.2K
R491
2
1
2
1
6
R453
Q417
C417
102F
1 2
R481
120F
6
5
390
R451
1
2
560
2.2K
R455
2
6
1
10K
R695
D403
1SS352
13
Q413A
TC74AC14FT
22
R439
4
Q405B
HN3A51F
3
5
D405
11 1012
3 4
R449
3
4
R459
4
3
R697
1SS352
390
4
3
5
560
10K
C419
102F
5 6
HN3C51F-BL
2.2K
R457
5
Q409
Q407
HN3A51F
14
978
R583
C583
101
3.9K
C405
D411
1SS352
D407
1SS352
D413
1SS352
D409
1SS352
R580
56
C571
R564
220
3
C507
R581
3.9K
C581
101
221
2.2K
R585
R469
0
R465
1.8K
R471
0
R467
2.7K
C423
R667
22K
8.2K
R669
-52V
Q415A
TC74AC00FT
C427
14
12
11
13
7
9
101
C421
101
10
1
2
4
5
C679 104
8
3
6
-57V
3
4
5
To NAAF-8708(2/2)
(SD-2 : D4)
PRT
DCPRT
PWMCNT
NFMUTE
+12V
+5V
GND
SPBRL
SPARL
R402
2.2K
TLP283-4
Q615
Rch
C402
+13V
R412
470
RN1402
Q619
4.7K
6
R422
-13V
Q624
RN2404
DC OFFSET
ADJUST.
C408
47/50
RN1441
47K
R420
RN1402
SPBDETRL
Q622
Q420
2.2K
Q623
C412
104
TF-C
SPADETRL
R642
220K
R652
R658 15K
R576
47K
(180K)
R416
8.2K
(6.8K)
R496
C436
220
NC
R654
R578
560K
100/25
R643
100K
5.6K
R442
15K
27K
R444
27K
R446
331
C586
Q412
2SC2713
R492
C438
100/25
220
R498
R644
68K
223
C611
1K
R484
4.7K
R410
C432
R494
1.2K
Q402
HN3C51F-BL
5
56K
R414
Q404
2SC2712-GR
C410
47/25
2.2K
R671
Q671
TLP283
2 1
3
4
R408
390K
R43047R432
R436
RN1402
681
100K
Q618
470
R428
321
1
2
R424
100
47
2.2K
R434
RN1402
27K
R438
C404
47/50
221
R406
TF-C
220K
R404
D402
UDZS5.6B
R630
2.2K
12
Q620
11
RN1402
6 5
10K
R631
10
9
8 7
R632
2.2K
10K
R633
14
3
4
13
2.2K
R635
Q616
RN1402
1
2
15 16
2.2K
R634
Q617
RN1402
Q674
2SA950
R673
4
390
22K
R672
3
Q406A
HN3A51F
5
HN3A51F
R418
0
R490
12K
2.2K
2SC2712
R636
2
1
4
3
R454
Q418B
2 1
12 13
Q614
47K
R482
120F
6
5
390
R452
5
4 3
560
2.2K
R456
2
1
10K
R696
C418
1SS352
102F
TF-C
Q414A
TC74AC14FT
R628
R629
4
HN3A51F
3
5
6
D404
10 11
68K
12K
33
R440
Q406B
R450
1
2
R460
3
R698
D406
1SS352
3 4
390
2
6
1
6
H3C51F-BL
560
2.2K
R458
4
10K
C420
102F
TF-C
9 8
Q613
M51957BFP
1
NC1
NC3
2
IN
VCC
3
NC2
OUT
4
GND5C
Q410
8
7
6
Q408
HN3A51F
14
576
R627
1/50
C610
C584
101
10K
R584
3.9K
C615
104
C406
D412
1SS352
D408
1SS352
D414
1SS352
D410
1SS352
10K
R679
R582
3.9K
R668
22K
C582
8.2K
R670
101
221
2.2K
R586
Q416A
TC74AC00FT
R470
R472
2
3
R466
1.8K
R468
2.7K
0
0
Q673
RN1402
C422
101
TF-C
C424
-52V
Q672
1
RN2402
2
1
5
4
101
13
12
10
9
C680 104
10K
R680
P601
-52V
14
3
7
6
11
8
-57V
R623
THERMISTOR
R579
P602
56
R565
220
Q525 78M12
C572
3
C508
C428
R622
Loading...