Kenwood KRF-X7775D Service Manual page 27

Z AA
(X08-3XXX-XX)
C704
1000P
+3.3V
79
R833 47K 41
PCM ZERO
134
R834 47K 42
HDCD DET
136
R835 47K 43
HDCD6DB DET
R836 47K 137
44
OVERLEVEL
R837 47K 138
45
PCM MUTE
80
R838 47K 46
DRIVE
R839 47K 47
SUB MUTE
R840 47K 48
C ROOMB C
48
R841 10K 49
C ROOMB B
49
R842 10K 50
C ROOMB A
R843 10K 50
51
YC-SEL-B
R844 47K 51
52
YC-SEL-A
52
R845 47K 53
C ROOMA G
53
R846 47K 54
C ROOMA F
3.3V 54
R847 47K 55
C ROOMA E
R848 47K 55
56
C ROOMA D
R849 47K 56
57
C ROOMA C
57
R850 47K 58
C ROOMA B
58
R868 47K 59
C ROOMA A
C803 10u50 59
60
RESET
+
C804 0.01
3.3V
+B
IC32 ROM
R718 100
20
A1 194
21
19 R717 100
A0
A2 193
22
CE 18 R716 100
23 A3 190
GND
17 R715 100
A4 189
R714 100
24 16
A5 188
OE
25 R713 100
15
I/00 A6 185
26
I/01 14 R712 100
27 A7 184
I/02
13 R711 100
28
A18 166
I/03
12
29
RDY/BUSY
NC
11
30 3.3V
VPP +B
VCC +B
10 R709 4.7K
31
RESET
VCC
32 9
WE
I/04
R708 100
33 8
I/05 A8 183
34
7 R707 100
I/06
A9 180
35
I/07
6 R706 100
A11 178
36
A10 R705 100
5
A12 175
37
R704 100
A-1 4
47
38 A13 174
NC
R703100
3
39
GND A14 173
40 2 R702 100
A17 A15 171
1 R701 100
A16 170
+3.3V
AB AC
3.3V
24
23
22
20
SREQ
19
MREQ
18
MCK
17
SDT
16
MDT
15
ADC RST
14
DAC MUTE
13
DAC 96K
12
DAC PD
11
D MUTE
IC43
10
10
DIR CLK
SUB u-COM
9
DIR DOUT
(DSP/VIDEO CONT.)
8
DIR DIN
7 3.3V
AVREF
6
DIR CS
5
DIR PD
4
AVSS
3
AUTO
2
FS96 DET
1
ERF
C802
0.01
C806
0.01
+B +3.3V
X3
C805 6MHz
1000P
R866
1K
+3.3V
AD AE
C221 R221
10u50 27K 6
8
R225
3 7
+ 5
560
IC9
(2/2)
C222 R222
10u50 27K
2
5 R226
1
+
3
560
IC9
4
(1/2)
-16.6V
16.6V
IC8,9
A/D INPUT
BUFFER
+B
15
IC11
1
DVSS
3.3V 2
+B DVDD
20
3
R915 47K MCLK
R302 1K 4
19 R914 47K 12 PD
5
BICK
18 R913 47K
17
R912 47K 6
SDATA
16 7
R911 47K
LRCK
R303 1K
8
15 R813 47K
14 SMUTE
R304 1K
9
14 R812 47K
13 DFS
10
13 +B DEM0
R811 47K
11
DEM1
12
R810 47K
12
+B DIF0
11
R809 47K
R808 47K
9 R807 47K
13
+B DIF1
8 14
R806 47K
DIF2
R861 1
+B
C801 0.01
6 R805 47K
5 R804 47K
3
R803 47K
2
R802 47K
1 R801 47K
+3.3V +3.3V
R902 470
R904 470
3.3V
IC44
LEVEL
CHANGE
OVER
(5.0V 3.3V)
+3.3V
+3.3V
17
20 19 18 17 16 15 14 13 12 11 10 9 8 7
C AZ-7
AF AG
+16.9V
16.6V
16.9V C236 100P
+16.9V
C229 R227
R233
47u25 4.7K 8
6
D5 D6
7 470
+
5
IC8 (2/2)
C215
R201 1
3.3V
R235 470P
470
R208 10K
R209 10K
C230 R228
C208 47u25
R234
47u25 4.7K
2
+
1 470
+
3 25
4 IC8 (1/2)
C214
470P
R236
24
470 D4 D3
C216
470P
23
3.3V
+B
D/A
C301
28 0.1
CKS2
27
CKS1
+5V
26
C306 10u50 IC12,13
CKS0 +B
25
+ R323
DAC OUT
P/S
10
C307 100P
24 FILTER
R311 R315
VCOM
23 1.8K 1K R321
AOUTL+
4.7K
2
R312 R316
22 1.8K 1K 3
AOUTL-
4
21 IC12
AOUTR+ 21
20 (1/2)
AOUTR- 20
19
AVSS
R306
18 5.0V 1
AVDD +5V
17 5.1V R305
IC12
VREFH +5V
16 10 (2/2)
R318
VREFL 5 8
1K 6
15 R317 R322
BVSS 1K 4.7K
R324
10
+3.3V
IC52
3.3V +3.3V AVR
(DSP/DIR/DAC/ADC)
18
14.7V
16 3.3V
+3.3V
+3.3V AVR
R953 R951
(SUB u-COM)
180 180
IC51
R954 R952
180 180
OUT IN +B +5V AVR
(DAC/ADC)
GND IC53
13.8V
5.1V
+5V OUT
15.5V
+15.5V
+3.3V
6 5 4 3 2 1
CN2
AH AI
+16.9V
16.6V
C201 C207
10u50 1 28 10u50
VREF L VREF R
+ +
2 27
GND L GND R
C202 3
C206
VCOMR
1000P 4 26 1000P
AINL+ VCOMR
5 25
AINL- AINR+ 25
24
AINR- 24
R210 5.1V
6
23
ZCAL
100 R207
23
3.3V 7
VA +5V
+3.3V VD
1
22
A.GND
8
21
DGND
B.GND
20
TEST
9 R206
CAL
19 47K
R202 1K
10
HPFE
RST
R205
R203 47K 11
47K
18
SMODE2
DPS
R204 47K 12 17
SMODE1 MCLK
13 16
R211 C212
LRCK FSYNC
14 15 220 47P
BCLK SDATA
A/D
IC7
+5V
C317
100P Lch
C330
100P
IC13
16.9V
R325 R329
(1/2)
R331 R333
1 680 470 2
1 120 10
3 8
4
C329
100P
B B
R335
1
+B +B
5 8
R332 R334
7
7 R326 R330 6 9
120 10
680 470 IC13
(2/2)
C318
Rch
R336
100P 1
+3.3V
R958 1 R955 1
R959 1 R956 1
R960 1 R957 1
+B +5.7V
5.7V
R965 1 R962 1
+6.3V
R966 1 R963 1
6.0V R967 1 R964 1 6.3V
IN +B
6.1V
GND
20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
CN1
D BA-7