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TX-DS494
Service manual
Onkyo TX-DS494 Service Manual page 16
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Instruction manual
(36 pages)
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E
SDTO
C751
C752
101J
101J
EXTMEM
C759
104Z
C763
L720
101J
022M
CMPREQ,
29
LRCLKN2
DATA0
17
30
16
CLKIN
DATA1
31
DATA2
15
CLKSEL
32
14
FILTD
DATA3
33
FILS
VSS2
13
CS4926
34
VDDA
VDD2
12
Q704
35
11
VSSA
DATA4
36
10
RESET
DATA5
37
DD
9
DATA6
DATA7
38
DC
8
A0,SCCLK
AUDATA2
39
7
R752
330
C836
C830
683J
R828
R829
R830
3
2.2K
2.2K
2.2K
47/50
2
NJM4565M
6
R834
R835
R836
5
2.2K
2.2K
2.2K
C831
C837
47/50
681J
C850
C844
R840
R841
R842
681J
3
2.2K
2.2K
2.2K
47/50
2
NJM4565M
6
R846
R847
R848
5
2.2K
2.2K
2.2K
C845
C851
NJM4565M
47/50
681J
C864
C858
R852
R853
R854
681J
3
2.2K
2.2K
2.2K
47/50
2
NJM4565M
6
R858
R860
R859
5
2.2K
2.2K
2.2K
C859
C865
47/50
681J
+
+12V
-12V
1
OUTCTL
AD0
AD0
2
0D
AD1
AD1
3
1D
AD2
AD2
4
2D
AD3
AD3
5
3D
AD4
6
4D
AD5
7
5D
AD4
AD6
8
6D
AD5
AD7
9
7D
AD6
10
GND
AD7
C840
47/16
C841
8
104Z
1
Q805
C842
4
47/16
C843
104Z
DOC
Q805
7
C854
47/16
NJM4565M
C855
8
104Z
1
DORS
Q806
4
C856
104Z
C857
47/16
DOLS
Q806
7
C868
47/16
C869
8
104Z
1
DOR
Q807
4
C870
104Z
C871
47/16
DOL
Q807
7
NJM4565M
F
R710
C714
C753
C754
104Z
104Z
VCC 20
1
OUTCTL
VCC 20
A8
0Q 19
2
0D
0Q 19
A9
1Q 18
3
1D
1Q 18
A10
2Q 17
4
2D
2Q 17
A11
3Q 16
5
3D
3Q 16
A12
4Q 15
6
4D
4Q 15
A13
5Q 14
7
5D
5Q 14
A14
6Q 13
8
6D
6Q 13
7Q 12
9
7D
7Q 12
CK 11
10
GND
CK 11
Q711
TC7WT241FU
1
8
G
VCC
2
7
A1
G
3
6
Y2
Y1
4
5
GND
A2
0dB
LFE-L
-3dB
CENT-L
-3dB
LS-L
*
0dB
KARA-L
0dB
DOL
Q802
TC9162AF
0dB
LFE-R
-3dB
CENT-R
-3dB
RS-R
0dB
R876 3.3K
DOR
TX-DS494/HT-R490
G
TX-DS494
HT-R490
330
NO
NO
104Z
EXTMEM
L722
022M
+5VDSP
C755 104Z
A11
1
A11
OE 32
A9
A10
2
A9
A10 31
A8
3
A8
CE 30
A13
4
A13
DQ7 29
A14
R771
5
A14
DQ6 28
330
BTADRH
6
A17
DQ5 27
10K
WE
7
DQ4 26
R773
8
VCC
DQ3 25
R772
9
RESET
VSS 24
330
BTADRL
10
A16
DQ2 23
11
A15
DQ1 22
A12
12
A12
DQ0 21
A7
A0
13
A7
A0 20
A6
A1
14
A6
A1 19
A5
A2
15
A5
A2 18
A4
A3
16
A4
A3 17
A15
Q709
MPC29M33HF
3.3VDSP
O
G I
R866 3.3K
C877
101J
R867 4.7K
R868 4.7K
C882
R871
47/16
R869 3.3K
C881
3.3K
4
R870 3.3K
104Z
2
MIXL
Q808
1
NJM4565M
C879
3
8
104Z
R863
330
FSWSDO
R864
330
FSWSCK
C880
47/16
R865
330
FSWSLT
R872 3.3K
C878
101J
R873 4.7K
R874 4.7K
R877 3.3K
6
MIXR
Q808
7
5
NJM4565M
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
+5VDSP
DGGND
DGGND
DGGND
+12VA
-12VA
AGND
+5VA
MIXR
MIXL
DOSW
DOC
DORS
DOLS
DOR
DOL
RT
LT
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