Kenwood KRF-V7773D Service Manual page 27

Z AA
R422 R421
4 3
GND
C422 1K 4.7K
3.3V
10u10 2
+ C400
R406 10K 0.1 5 1
VCC NC
R405 10K OPT.
DET.
IC26
C408 0.1
C407 0.1
C405 1000P
R402
1 3.3V
+3.3V
R404
18K
C404
12.288MHz 39P
C421 C403
1000P 39P
R403 100
C401 1000P
+3.3V
R401 1
+3.3V +3.3V
3.3V
+3.3V
IC31,32
IC32
D-TYPE
LATCH
D5
+3.3V
+3.3V
.3V
+3.3V
3.3V
IC24 ROM
20 R901 100
A1 194
R900 100 21
19 R902 100
195 A0
A2 193
22
R903 100
153 CE 18
23 A3 190
GND
17 R904 100
A4 189
16 R905 100
24
A5 188 3.3V
59 OE
25 R906 100
15
82 I/00
A6 185
26
83 I/01 14 R907 100
27 A7 184
84 I/02
13 R918 100
28
A18 166
86 I/03
12
29
RDY/BUSY
NC
11
30
VPP +3.3V
+3.3V VCC
R554 4.7K
31 10
RESET
VCC
9
32
WE
87 I/04
33 8 R908 100
88 I/05 A8 183
34
R909 100
7
90 I/06
A9 180
35
91 I/07
6 R911 100
A11 178
R910 100
36
179 A10 5 R912 100
A12 175
R919 100 37
R913 100
165 A-1 4
A13 174
38
NC
3 R914 100
39
A14 173
GND
R917 100 40 2 R915 100
169 A17 A15 171
R916 100
1
A16 170
R553 4.7K
58
+3.3V
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AB AC
+3.3V
58
57
56
3.3V
61
R653 47K 61
AD2 RST
62
R654 47K 62
DA MUTE
R655 47K 63
63
DA PD
64
VDD
65
+3.3V VDD
66
GND
67
NC
68
NC
C682 0.1
69
VDD
70
IC40
+3.3V VDD
R656 10K
71 u-COM.
R657 47K
72
Y DET
72
R658 47K
73
DIR ERF
R659 47K 73
74
DIR AUTO
74
R660 47K 75
DIR FS96
R661 10K 75
76
DIR CCLK
R662 15K 76
77
CK DET
R663 15K 78
C DET
R664 47K
79
DIR CDTO
R665 47K 79
80
DIR CDTI
80
3.3V
1
2
4
5
6
R681
1
+3.3V +3.3V
3.3V C603
1000P
+3.3V
+3.3V
3.3V
AD AE
C39
47P
IC4
A/D
43
42
41
40
40 R636 47K
DATA3
39 R635 47K
39
DATA4
38
38 R634 47K
DATA5
37
37 R633 47K
DATA6
36 R632 47K
36
DATA7
35
35 R631 47K
ACK
34
34 R630 47K
REQ
33 33 R629 47K
33
RD/WR
32
32 R628 47K
RESET
31
31 R627 47K
BUSY
30 R626 47K
30
HDCD
29 R625 47K
29
MUTE
28
28 R624 47K
DTS DET.
27 R623 47K
27
OVER LEVEL
26 R622 47K
26
HDCD+6DB
25
25 R621 47K
DRIVE
24 R620 47K
24
PCMO
R619 47K
23
NC
22 R618 47K
3.3V
D MUTE
R700 47
R617 47K
21
SUB MUTE
IC39
5V -> 3.3V
21
3.3V
+3.3V
C602
39P
3.3V
C601
AVR
39P
+3.3V
+3.3V
AF AG
+5V
+5V +5V
D3 D1
ANALOG(Lch)
R29
1K
R27
1K
ANALOG(Lch)
R21
1
+3.3V
C37
1000P
C38
100u6.3
+
3.3V
R139
100
5.0V R28
5.0V
1K
25
R30
1K
24
D4 D2
+5V
+5V
61
63
62
54
22
7
R723
47
1K
R239
100
23
21
R722 1K
49
R721 1K
50
19
C845 47P
IC54 15.4V
R842 R841
47 47
OUT IN +14.4V +15.2V
GND
14.3V
R339
100
+3.3V
+15.2V
AH AI
+3.3V
+5V
R101
+3.3V
1
D/A
IC5
1 28
DVSS CKS2
2 27
+3.3V +3.3V DVDD CKS1
3 26
MCLK CKS0
R102 1K 4 25
F/S
PD
24
5
VCOM
BICK
23
AOUTL+
+3.3V
6
SDATA
7
LRCK
22
R103 1K AOUTL-
8
21
SMUTE
AOUTL+
R116 1K
9 20
DFS AOUTL-
10 19
+3.3V DEM0 AVSS
IC35
11 18
DEM1 AVDD
12 17
+3.3V DIF0 VREFH
13 16
+3.3V DIF1 VREFL
14 15
DIF2 BVSS
R201
+3.3V
1
3.3V
D/A
IC6
1 28
DVSS CKS2
2 27
+3.3V DVDD CKS1
3 26
MCLK CKS0
25
R202 1K 4
F/S
PD
24
5
VCOM
BICK
23
AOUTL+
+3.3V
6
SDATA
7
LRCK
22
AOUTL-
R203 1K 8
21
SMUTE
AOUTL+
R216 1K
9 20
DFS AOUTL-
10 19
IC36 +3.3V DEM0 AVSS
11 18
DEM1 AVDD
12 17
+3.3V DIF0 VREFH
13 16
+3.3V DIF1 VREFL
14 15
DIF2 BVSS
R301
+3.3V
1
D/A
IC7
1 28
DVSS CKS2
2 27
+3.3V DVDD CKS1
3 26
MCLK CKS0
R302 1K 25
4
PD F/S
24
5
VCOM
BICK
23
AOUTL+
+3.3V
6
SDATA
7
LRCK
22
AOUTL-
R303 1K 8
21
SMUTE
AOUTL+
R316 1K 9 20
DFS AOUTL-
IC37 10 19
+3.3V DEM0 AVSS
11 18
DEM1 AVDD
12 17
+3.3V DIF0 VREFH
13 16
+3.3V DIF1 VREFL
14 15
DIF2 BVSS
DA DATA MUTE
+3.3V