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KRF-X7775D
Service manual
Kenwood KRF-X7775D Service Manual page 27
Audio video surround receiver
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Also See for KRF-X7775D
:
User manual
(88 pages)
,
User manual
(146 pages)
,
Connection and setup manual
(60 pages)
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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
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This manual is also suitable for:
Vr-5090
Krf-x7775d-s
Vr-5080
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