Kenwood VR 3080 - Dolby Digital Receiver Service Manual page 18

K L
SURROUND UNIT
(X08-297X-XX) (A/10)
1
4.4V
IC6
(6/6)
A1
R53 C56
14 8
1 0V 4.2V 1.8K 4700P
OUT
9
7
2 C55
GND
VIDEO2
0.1
3
VDD VDD C66
39P
OPTICAL +5V +5V
2
A2
R55 C57
1 5 6
OUT
1.8K 4700P
2
4.1V IC6 4.2V
GND
VIDEO3 (3/6)
R60 150K
3
VDD VDD
DIGITAL
C60 10P
DIGITAL IN
AMP
R59 8.2K IC6
J1
(5/6)
C59 R58 R61 C61
4700P 1K 1.8K 4700P
13 12 11 10
VIDEO4 1
2.3V
IC6 2.4V 0.8V
(4/6)
R66 150K
COAXIAL C64 10P
R65 8.2K IC6
2.3V
(2/6)
R67 C65
C63 1.8K 4700P
R64 1 2 3 4
CD1 2
4700P 1K IC6
R69
2.4V 0.8V
3 (1/6)
2.2
IC52
SRAM
4
+5V
+3.3V
5
3.3V 81
VDD2
0V 82
82 SDWCKO
0V 83
83 SDBCKO
0V 84
84 SDIA0
85
SDIA1
2.3V 86
86 RAMA1
1.9V 87
87 RAMA0
0.8V 88
88 RAMWEN
4.9V 89
89 RAMOEN
90
VSS
3.3V 91
VDD2 VDD2
92
IPORT7
93
IPORT6
6
94
IPORT5
95
IPORT4
96
IPORT3
97
IPORT2
98
IPORT1
99
IPORT0
100
VSS
4.9V
0V
7
+3.3V
+5V
M N
R72
47K
IC7
DIGITAL RESET Q11
DATA
0V DIGITAL(LS,RS)
IC7 DETECTOR
32
33
DIGITAL(C,SW)
DIGITAL(FL,FR)
0V
34
DIGITAL OUT
R35 220 0V
5.0V
C72
84
0.1
R34 220 0V
82
D61
R74
L1
R33 220
3.3K 0V
83
C71 R71
0.1 100K
4.8V
+5V +5V +5V VD+
0V
2.4V
0V
0V
DIGITAL C39
0.1
DIGITAL
4.9V
L54
C510
1uH
0.1
44
L53
VDD
10uH
+5V +5V
+3.3V +3.3V
0V
0V
4.8V 0V
3.3V
50
VSS1
49
SDWCK1
48
SDBCK1
47
SDOB0(FL,FR)
46
SDOB1(C,SW)
45
SDOB2(LS,RS)
44
RAMA7
43
RAMA8
42
IC51
RAMA9
41
DSP
VDD2
(DTS,DOLBY DIGITAL 40
VSS2
PRO LOGIC 3ST.)
39
OPORT7
38
BLOCK DIAGRAM
OPORT6
: KRF-V7020D
37
4.9V OPORT5
36
OPORT4
35
OPORT3
34
OPORT2
33
OPORT1
32
OPORT0
31
VDD1
0V
1.7V
3.3V
+3.3V
R523 100
O P
53
R46
47
3.3K
0V
22 2.4V
34 AOUT2(R)
SDIN1 21 2.4V
AOUT1(L)
35
20 0V
SDOUT2
AGND1
4.9V
5.0V 19
36
VA+
SDOUT1
2.4V 0V
18
37 AGND2
LRCK
38
SCLK IC3
0V
+
DIR
39 17
DGND2 DAC A/D FILT
40 CONVERTER 16 2.4V
VD+ CMOUT
41 15 D2 D1
DGND1 BLOCK DIAGRAM AINAUX
2.4V
42 : KRF-V7020D 14
RX1 AINIL
43 13 0V
RX2 AINIR
0V
44 12 4.9V
RX3 FREQ1
55
48
58
R43 47K
66
65
R44 47K
67
C36 1000P
46
R42 47K
R40 47K
R41 47K
C37 1000P
R70 3.3K
+5V +5V
+5V
INVERTER
IC55
1.8V 1 5.0V
8
VDD
3.1V 2 7
3.1V
0V 3 6
5
4
GND
0V R502 100
0V R503 100
0V R504 100
2.5V
44
2.5V
43
2.5V
42
3.3V
VDD2 +5V
4.4V
R529 3.3K
R610 3.3K
36
R609 3.3K
Q501
35 R510
4.7 1/4W
R608 3.3K
CLOCK
+5V +5V
34
CONT.
R607 3.3K 3.3V IC54 4.9V
33 R511
1
R606 3.3K
+3.3V OUT IN +5V
32
1/4W
GND
VDD1
+ +
3.3V
AVR
Q R
C107 3300P
FLch
R101 C103 R103 R107
3.9K 2.2u50 4.7K 1K 3
+
2
R109
12K
21KHz LPF
R110
12K
6
R102 C104 R104 R108
3.9K 2.2u50 4.7K 1K
5
+
FRch C108 3300P
+ +
R209 22K
C207 120P
C38
0.1 LSch
R201 C203 R205 R207
3.3K 47u25 3.9K 1.8K
2
+
3
C40
+
10u50
21KHz LPF
5
R202 C204 R206 R208
3.3K 47u25 3.9K 1.8K
6
+
RSch
C208 120P
R210 22K
C307 3300P
Cch
R301 C303 R303 R307
2.2K 2.2u50 4.7K 1.2K 3
+
2
R309
10K
R310
15K
6
R302 C304 R304 R308
4.7K 2.2u50 4.7K 10K
5
+
SWch C308 6800P
C521 R520
0.1 10 1/4W
+5V
CLOCK
ON/OFF
IC57
0V 1 4.9V
VDD 5
1.9V 2
C522 R518
L51
3 4.9V 47P 560
4
GND
CLOCK
AMP
IC56
1.9V 1 4.9V
8 7.3V
R49
VDD
2.2
2.1V
2 7
1/4W
2.2V
2.4V 3 6
C43
0.1
5
5V AVR
4 IC5
C525
GND
47P
R516 1M
X51
12.288MHz
R515 1M
C44
0.1
C528
C45
10u50
22P
+5V
S T
+17V +17V +17V
16.9V 17V
8 R113
1 150
IC11
(1/2)
IC11
(2/2)
R114
7 150
4
17V 17V
-16.6V
16.9V
+17V +17V
8 R211
100
1
IC21
(1/2)
IC21
(2/2)
R212
7
100
4
17V 17V
-16.6V
16.9V 16.9V
+17V +17V
IC32
8 R313
1 220 3 8 (1/2) R319
100
2
IC31
1
(1/2)
R315 100
21KHz LPF
BUFFER
C316 22P
R316 10K
IC31
6
7 R320
(2/2)
R314
5
100
IC32
7 220 4
4 (2/2)
17V 17V
-16.6V
-16.6V