Schematic Diagrams - Onkyo DX-7555 Service Manual

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SCHEMATIC DIAGRAMS-1

NOTE
THE COMPONENTS IDENTIFIED BY MARK
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER)
ELECTROLYTIC CAPACITORS
(
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030
3pF 330
33pF 331 330pF 333
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
1
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX)
PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
CAUTION
FOR CONTINUED PROTECTION
AGAINST FIRE HAZARD, REPLACE
ONLY WITH FUSE OF SAME TYPE
A
V
AND RATING INDICATED.
ACINLET
P9004
<UJJ> Only
2
3
3
M
pick short terminal
FO-
TR-
TR-
FO+
PD
4
VR
LD
LD-G
F
C
B
A
D
E
+5V
5V
VC
2.5V
U02 : CONNECTOR
PC BOARD NAETC-8736
5
M
M
B
ARE CRITICAL FOR SAFETY.
IS DC VOLTAGE. (NO INPUT SIGNAL)
)
ARE IN uF/WV.
0.033uF
ATTENTION
AFIN D'ASSURER UNE PROTECTION
PERMANENTE CONTRE LES RISQUES
D'INCENDIE, REMPLACER UNIQUEMENT
A
V
PAR UN FUSIBLE DE MEME TYPE
ET CALIBRATION COMME INDIQUE.
8
FLASHHS
R1025
0
CDSVRE
NC
7
FLASH_VPI
R1027 0
FLASHVPI
Vpp/test
6
VDD_CPU
EV5V
5
FLASHRST
R1029
0
CDSVRST
RST
4
FLASHCK
R1032
0
CDSVCK
CDSVCK
3
FLASHO
R1033
0
CDSVSO
CDSVSI
2
FLASHI
R1037
0
CDSVSI
CDSVSO
1
CPUGND
GND_CPU
C3001
R3001
BLM21B222SPT
T3001
224
NSRF-2046
150
C3002
L3003
+
DIGITAL OUT
R3002
22/50
150
L3001
BLM21B222SPT
U3001
L3002
TOTX141
BLM21B222SPT
3
IN
C3011
2
V
1
104
GND
C3007
+
330/16
DOUT_1
U3002
GND_D
R3006
3
IN
2
V
C3014
1
GND
UJJ ELSE
R3005 NC
0
R3006
0
NC
C3014 104 NC
U3002
NC
C2002 104Z
GNDM
C2003
470/16
+
1
8
VCC
FWD_IN
LD+
5
LD+
2
7
M+
REV_IN
Q2001
LD-
4
LD-
3
6
M-
BD7931F
CONT
INSW
3
CDCLOSESW
4
5
POWGND
PREGND
DGND
2
GND_CPU
OUTSW
1
CDOPENSW
4
FO-
3
FO+
2
TR-
1
TR+
12
PD
11
LD
10
F
9
B
8
D
7
6
5
E
4
A
3
C
2
1
SP+
6
SP+
SP-
5
SP-
SL+
4
SL+
SL-
3
SL-
SSTOP
2
SSTOP
3.3V
1
VDSPD3.3V
2
1
U01 : MAIN CIRCUIT PC BOARD NAAR-8645
VSW_CPU
CDSVRST_1
R1001
NM
R1003
61
R1009
CDSVGPI
100
62
CDSCORI
63
CDSVRQ
R1011
64
R1010
CDIREQ
100
100
65
CDACK
66
R1015
NC
10K
67
VSS0
68
VDD1
R1073
69
X2
70
X1
R1074
71
TEST/VPP
72
NC
73
R1019
GND
10K
74
VDD0
75
AVDD
76
GPANI0
77
GPANI1
78
GPANI2
79
GPANI3
80
GPANI4
GND_CPU
5
VDD_CPU
ACK_1
C1009
104Z
Q1002
TC7WT241FU
3
1
2
G
2
R1062
1
A1
0
3
Y2
4
GND
R1065
R1068
VDDM
R2072
1.5 to 1.6
0
TP2006
6
R2019
Q2002
BA5947FP
VC
E
F
A
B
C
D
SSTOP
PD
PDSENS
LD
LD_GND
VDDPIC
Q2007
UPC2906HF
3
O
C
Q9001
78M05
3
1
O
I
5
VDD_CPU
R1002
10K
GND_CPU
R1004
NC
10K
CDRW
CD2SPD
CD4SPD
CDCLOSESW
CDOPENSW
CDCLOSE
CDOPEN
VSS1
Q1001
CDANAMUT
CDDACMUT
MPD78F4225GC
CDDACSO
CDDACCLK
CDDACCS
CDDACRST
CDEMPHASIS
CDLAT2
CDPOWER
CDREQ
CDRESET
CDFOK
R1035
C1018
R1034
10K
10K
C1019
CDXLT_1
R1051
47
C1010
104Z
Q1003
TC7WT241FU
TC7WT241FU
8
1
8
1
VCC
G
VCC
G
7
2
7
2
G
A1
G
A1
R1063
6
3
6
3
Y1
Y2
Y1
Y2
5
0
4
5
4
A2
GND
A2
GND
R1066
R1069
CDDATA2
IREQ
VDSPD3.3V
2.5
CDSCORI
TP2001
COUT
TP2003
31
MIRR
MIRR
32
TP2004
DFCT
33
DFCT
FOK
34
DVSS4
35
R2020
R2021
DVDD5
36
DVSS5
0
22K
0
TP2005
37
LOCK
LOCK
38
MDP
39
SSTP
R2022
40
IOVSS4
SFDR
0
41
R2023
SFDR
SRDR
R2025
0
42
SRDR
TFDR
R2027
0
43
TFDR
TRDR
44
R2030
0
TRDR
FFDR
45
R2032
0
FFDR
FRDR
0
46
R2034
FRDR
47
IOVDD1
AVD1_+3.3V
48
AVD1
49
AVS1
50
R2040
0
E
51
R2041
0
F
C2032 681
R2043 0
R2044
52
TEI
C2033 NM
15K
53
TEO
C2034 102
R2046
54
FEI
C2035 NM
15K
55
FEO
R2045 0
56
VC
57
C2037
C2036
A
100/16
100/16
58
+
B
+
59
0
C
R2047
60
D
0
R2048
0
R2049
0
R2050
C2052
GNDD
+
100/16
C2058
3.3
104
RFAC
VC
1
I
MECHA_+B
GNDM
DX-7555
D
OP
3
2
1
40
TP1001 CDRW
39
TP1002 CD2SPD
38
TP1003 CD4SPD
R1012
37
R1013
36
0
R1014
35
0
R1016
34
0
33
0
R1017
32
31
R1031
1K
30
R1018
29
10K
28
27
R1020
R1021
26
0
25
R1022
24
R1023
23
R1024
0
REQ
22
0
CDRESET
R1026
21
R1028
0
CDSVAK
EXCLK
D1001
1SS355
R1053
1K
C1008
R1055
104Z
1K
Q1004
R1056
8
VCC
1k
7
G
6
Y1
5
A2
R1070 1K
R1064 1K
CDRESET
R1067 1K
P2001
Error_Rate
Q2003
CXD3014R
R2061
0
L2004
2.2u
C2062
C2061
NC
101
R2065
R2062
470K
L2005
D2001
2.2u
Q
2S

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