Service manual
CD-K491W
– 34 –
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Figure 34 SCHEMATIC DIAGRAM (13/20)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.
DOLBY
AU
D
CA46
0 047
CA39
0.1
CA38
0.1
CA37
0.001
CA47
0.001
CA48
0.1
CA49
0.1
CA27
10/16
CA28
0.1
1
2
3
ICA15
74HCU04F
INVERTER
CA34 0.1
CA33 10/16
ICA16
74HC153F
INVERTER
CA24 0.1
CA23
10/16
CA25
10/16
ICA13
AK4520A
20BIT 2CH A/D
D/A CONVERTER
ZDH51
MTZJ9.1B
QH51
KTC3199 GR
CH60
1000/10
CH59
47P(CH)
CH61
0.001
DH51
1SS133
DH52
1SS133
LH52
1µH
LH51
1µH
QH52
KRC102 S
SWITCHING
CH53
22/25
CH55
22/25
CA36 0.1
CA35 10/16
1
ICA11
NJM4580M
OPE AMP.
2
3
CA15
10/16
CA13
0.1
5
6
7
4
8
CA17
10/16
CA19
0.1
CA21
0.0015
1
ICA12
NJM4580M
OPE AMP.
2
3
CA16
10/16
CA14
0.1
5
6
7
4
8
CA18
10/16
CA20
0.1
CA22
0.0015
JA11
JH51
CA50
100/10
CA96
47/25
CA95
47/25
LA14
10µH
LA12
18µH
DA11
1SS133
DA12
1SS133
RA41
10K
RA49
270
RA48
270
RA29
47K
RA30
2.2K
RA33
2.2K
RA32
47K
RH56
2.2K
RH57
47K
RA11
47K
RA19
10K
RA21
10K
RA12
47K
RA20
10K
RA22
10K
RA50
1K
RA51
270
RA52
1K
RA53
1K
RA40
1K
RH53
100
RA13
10K
RA17
10K
RA15
10K
RA09
330
RA25
10K
RA23
330
RA14
10K
RA18
10K
RA16
10K
RA10
330
RA26
10K
RA24
330
RA91
47K
RA92
47K
CH56
47/25
CH57
0.022
LA13
0.82µH
CA51
100/10
RA39 1K
RA36 1K
RA37 1K
RA34 1K
RA35 1K
DA13
1SS133
DA14
1SS133
RA07
10K
RA08
10K
RH62
150
RH61
150
CH52
220P
CH54
220P
RH64
150
RH63
150
CH58
0.047
RH67
390
RH68
470
RH66
150
RH65
120
RA02
22
RA01
22
RA27
150
RA28
150
LH53
100µH
RH58
47K
LA16
18µH
RA56
270
RA57 270
RA54
270
RA55
270
QH53
KRC102 S
SWITCHING
LA17
18µF
CA97
0.1
CA98
10/16
QB01
2SD2012
VOLTAGE REGULATO
R
UN-SWITCHED
RB12
390
R
3
CB12
100/10
CB13
0.022
ZDB
1
MTZ
J
ZDA02
MT ZJ8.2A
ZDA01
MT ZJ8.2A
RA93 680
RA94 680
RA95 680
RA96
680
DA16
1SS133
DA15
1SS133
CA32
0.1
CA30
0.1
CA11
22/16
CA12
22/16
RA60
10K
CB14
0.001
CB16
0.001
CB15 0.001
CB20
0.001
CA26
0.1
CB21
0.001
CB22
0.001
CH62
0.022
DB01
1SS133
DB02
1SS133
1
BIA11
2
2
1
CNSA11
TO MAIN PWB
P28 3-C
CNPR12
ICA14
GP1F38 R
TERMINAL
CFWA02
2 3 4
5
6
7
8
2 3 4
5
6
7
8
9
1 1
TO MAIN PWB
P25 12-E
CFWU01
CFWU02
TO MAIN PWB
P25 12-F
FWA02
FM SIGNAL
ICH51
NJM2246M
OPE AMP.+ SW
RESET
SDA
VDD
SDE
TCK
SCK
TDI
SI
GND
SCKA
WSA
VDD
WSB
SDF
D17
SCKB
D16
SPFTX/SDG
SS
TMS
INT
VDD
D14/RDY
GND
A1
A2
A3
+3.3V
COAXIAL
DIGITAL-IN
OPTICAL
Vcc
GND
1G
B
2Y
A
GND
Vcc
VREFH
VREFL
DIF1
DIF0
LRCK
SCLK
VCOM
PWAD
PWDA
L-CH
R-CH
MONITOR OUT
+
–
+
–
+
–
+
–
CD D-IN
V1/V2
VIDEO2 IN
VIDE01 IN
DVD1 IN
DVD2 IN
DGTL2
PWAD
RESET(ZR)
SI
SS
SO
DGND
SCK
DGTL1
DEM1
DEM0
GND(V)
A+12V
AGND
A-12V
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
–B
+B
+B
1
2
1
2
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
1
L-OUT
LS IN(LS-OUT)
R-OUT
RS IN(RS-OUT)
AGND
V1/V2
LTIN
RTIN
1 20
A-12V
AGND
A+12V
+5V(AC3_B)
VGND
+5V(AC3_A)
+5V(AC3_A)
GND(D3)
GND(D4)
DGTL2
SS
AD RES
AC3_RES
SCK
SI
SO
DGTL1
SP CONF
DEM0
1 2 3 4
5
6
7
8
9
10
11
12 13 14
AOUTR
AOUTL
15
16
17
18
19
202122
23
242526
27
28
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
1112
13
14
15161011121314
2G
2C3
2C2
1
2
3
4
5
6
7
8
1 2 3 4
5
6
7
8
9
D15
GND
D19
D18
A17
A18
A19
GND
VCCA
CLKOUT
VDD
SDC
SDB
1
2
A0
GND
2C0
2C1
1Y
1C0
1C1
1C2
1C3
SDTO
SDTI
AGND
VA
AINL–
AINL+
AINR–
AINR+
CMODE
MCLK
DEM0
DEM1
TST3
TST2
TST1
VD
DGND
3
3
10 11 12 13 14 15 16
17
18
19 20
DEM1
10 11
7071727374757677787980
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
79
80
1.7V
3.3V
2.3V
4.6V
2.3V
2.3V
2.3V
2.3V
2.3V
0V
3.3V
3.3V
1.6V
1.6V
0V
1.0V
0V
2.3V
2.3V
0V
3.9V
3.9V
0V
3.3V
0V
0V
0V
0V
0V
1.6V
1.7V
1.7V
0V
1.6V
3.4V
3.4V
0V
0V
0V
0V
0V
0V
1.7V
0V
1.7V
2.7V
2.8V
0V
0V
2.3V
4.7V
0V
2.3V
2.3V
2.3V
2.3V
2.3V
2.3V
2.3V
4.7V
0V
2.3V
2.3V
2.3V
2.3V
5.1V
4.3V
5.0V
5.0V
0V
4.5V
11.9V
4.2V
4.2V
4.2V
0V
0V
0V
0V
3.3V
4.0V
1.0V
3.3V
0V
0V
0V
0V
0V
0V
3.3V
1.6V
3.3V
0V
3.3V
1.6V
0V
0V
0V
0V
0V
33V
0V
3.3V
0V
3.8V
0V
5.4V
3.4V
4.0V