Kenwood VR-208 Service Manual page 16

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SURROUND UNIT
(X08-2840-10)
DIGITAL
1
+5V
IC24
3.4V
+5V
2
4.9V 81
VDD
2.4V 82
3.2V 83
SDISEL
1.8V
84
3
85 SDI
INTERFACE
86
TESTI27
87
TESTI28
88
TESTI29
89
TESTI30
CONTROL
90
VSS
C9 4.9V 91
VDD
0.1
92
93
94
95
96
0V
97
( 97 )
0V 98
( 98 )
0V 99
( )
99
4
100
VSS
R21
220
X1
10MHz
C14
18P R1 1M
C13 18P
C1
0.1
+5V
5
A1
3.7V
3
2 +5V
VIDEO3
+
1
DOLBY DIGITAL
/PCM IN
J1
VIDEO2
6
7
M N
R15
220
+5V
R36 1K
R9 220
C6 C5 R8 220
1000P 1000P
+5V
C10
330P
u-COM
INTERFACE
CRC 50
VSS
49
SDOCKSEL
48
2.1V
47
2.1V
BIT STREAM 46
INPUT SDO
READING 24bit DSP
BUFFER INTERFACE
1.1V
PROCESSOR 45
44
TESTI20
43
TESTI19
42
CONTROL DIGITAL
TESTI18
CONTROL DELAY-RAM
RESISTOR
41 4.1V
C.LFEch
VDD
40
VSS
39
38
OPER TION CLOCK 37
(20MHz)
36
35
34
PLL
33 4.9V
32
31 4.9V
VDD
IC1
DOLBY
DIGITAL
(AC-3)
C3
0.1
C2
0.1
+5V
+5V
L1
4.9V
C34
22P
DIGITAL
VIDEO2
C31 R31 R27 C32
L2
0.1 47K 2.2K 0.1
C33
C29 R26 C39
2.6V
2.5V 22P
22P 2.2K 0.1
4.9V 0.8V
R30 R32
C30
4.7K 4.7K
DIGITAL
0.1
+5V VIDEO3
3.7V 4.7V
IC3
+5V
INTER-
FACE
O P
+5V +5V
+
1
DIGITAL
2
FILTERS
0V 3
0V 4
4.3V 5
4.4V 6
0V
7
R25
4.5V 8
2.2K
R19
220 0V 9
0V 10
INPUT
( 97 )
MUX
0V
11
( 98 )
DIGITAL
SL,SRch
( )
99
+5V
R70
100
R107
R108
+
5.0V
R68
D7 2.2 1/4W
+5V
+5V
+
5.0V
D8
R66
2.2 1/4W
+5V
+
5.0V
D9
R67
1 1/4W
+5V +5V
+
Published in Heiloo, Holland.
Q R
+5V
33
VD+
PLL 32
SERIAL AUDIO
DATA INTERFACE
31
DIGITAL FILTERS
30
29
28
MUX
27
DEM
26
25
ANALOG LOW PASS
24
AND OUTPUT STAGE
23
VA+
2.3V
2.3V
+15V
+5V
R72
Q2
4.7K
Q1
15.0V
IC11
8
C111 (1/2) 5
1K 10u50
6
+
7
D1
R105
100
1K BUFFER
D2
R106
100
C112 2
10u50 1
5V AVR 3
+
11.1V
IC8
-14.8V
R61 IC11
4
2.2
(2/2)
OUT IN
+B +B
-15V -15V
GND 1/4W
+
5V AVR
11.1V
IC9
R62
2.2
OUTIN
+B +B
GND 1/4W
+
5V AVR
11.1V
IC10
D5
R63
2.2
OUTIN
+B +B +B +B + ~
1/4W C72 C73
GND
+ + + - ~
0.22 0.22
L3
2 1
CN3
C
S T
SRch
C132 R134
4.7u50 5.1K
+
0V
SLch
C131 R133
C23 C25
4.7u50 5.1K
12P 15P
+
0V C22 C24
12P 15P +15V
C152 R154
4.7u50 5.1K
0V
+
2.9V
2.8V
IC2
DIR
DAC,A/D
CONVERTER
LFEch
C151 R153
2.3V 4.7u50 5.1K
2.3V +
2.3V
Cch
2.3V
-15V -15V
+15V +15V
+
+15V
R58
15V 15V
390 1W
+
R59
1
1/4W
S1
XS8 SL16
(
62 )
17 16 15 14 13 12 11 10 9 8 7 6 5
D
12/6/15