Kenwood KRF-V7771D Service Manual page 28

AT AU AV
(X08-285X-XX)
(X08-2903-XX)
Q Q
3 7 6 3 1 5 1 5 0
B
+B
1
2
7.6V
IC63
E3
WH3 +
R574
1
+8V +B IN OUT
CH-SPACE 75
2.7 GND
2
32 1/4W
PLL-DO
R832 100
3 +
PLL-CE 29
X11-C/7 4 R831 100
PLL-CLK 27
-CN11
5 R830 100
PLL-DATA 28
7.4V
6 R829 100 IC64
1/6 T MUTE 26
R575
7
-16V +B +B IN OUT
8 2.7 GND
C +16V 1/4W
9
D53 +
T Lch
10
3 TGND
11
T Rch
12 7.7V
IC65
STEREO 31 5V AVR
13 L21 R576
SD 30 +B INOUT
14 2.7 GND
S LEVEL 25
1/4W 5.0V
15 +
DE OUT 4
L22
+B
CN11
L68
DGND 1
+
L67
+8V 2 +8V
AUX 3 T E
L 1 3 9 4 2 2 9 6 5 1 3
L61
16.3V
-17V 4 -17V
L62
IC74
+17V 5 +17V +17V
4 C405 (1/2)
4.7u50 5 8 C401
GND 6
+ 7 4.7u50
+
+ 6
T Rch 7 - +
TGND 8 R851
100
T Lch 9
BUFFER
GND 10
R IN 11
R852
GND 12
100
2 C402
L IN 13 C406 - 1 4.7u50
4.7u50 3
+ +
+ 4 IC74
(2/2)
-17V
E1 -16.5V
R780 47K IC71
C624 22P 17 OUT 2 DIN1 14 DIN2 1
IC72
2.6V 2.7V (2/6) 0.9V
J11 R781 4.7K
CD1 L L
L1
C622 1 2 3 4
CD
VIDEO2 H H
COAXIAL 0.1
IC72(1/6) VIDEO3 L H
5
VIDEO4 H L
R783 47K
C623
L2 0.1 C625 22P ELSE - -
VIDEO4
IC72
COAXIAL R784 4.7K 2.7V
(4/6)
R990
13 12 11 10 220
2.6V
0.9V IC72 0V
4.4V
DIGITAL IC72(3/6) (5/6)
IN R966 5 6
A1
220 14
1
OUT C926
+B
2 10u50 5.0V
VIDEO3
GND C630 0.01
OPTICAL +
3
VDD R786
+ 10 1/4W C854
IC71
+B +B +B
0.01
4.9V R967
220 9 8 DIGITAL
A2
REC OUT
5.0V
4.4V 0V SEL.
1 7
IC72
OUT
2 (6/6)
VIDEO2 1
GND
OPTICAL STB
6 3
VDD R787 0V 2
+ 10 1/4W DIN1
0V
+B +B 3
V2
4.9V
0V 4
V3
0.9V 5
V4
A3
C 0.9V
6
CD
3 R968 220 0V 7
w w w
IN OUT
DIGITAL
OUT
1 8
GND GND
OPTICAL
2
VDD
R788
+
10 1/4W
+B +B
4.9V
7 X25-B/7
-E18
2/6
F
AW AX AY
-B
+B
+B
+B
1
GNDA
2
MCSO
3
MA15
4
MA14
5.0V
IC58 5
MA13
C549
1M DRAM 6
+B VCCA
0.1 7
5V AVR
MA12
20 8
VSS GNDA 5.0V
0.4V 1 C548 9 IC59
5.0V ( ) +B
67 D1 VCCQ
0.1
+ 0.4V 2 19 0.4V 10 CONFIG
( 68 ) D2 D4 69 GNDQ
FILTER
5.0V 3 18 0.4V 11
( 78 ) WE D3 71 MA11 ORIGINAL
5.0V 4 17 5.0V 12
SURROUND (DSP)
( 79 ) RAS CAS 80 MA10
DELAY TIME
5 16 5.0V 13
5V AVR NC OE 77 MA9
15 5.0V 14
A8 MA8
15
5.0V GNDA
5.0V 6 14 0V 16
+ (
22 ) A0 A7 MA7 5.0V
5.0V 7 C547 17
( 23 ) A1 +B VCCA
0.1
5.0V 8 13 5.0V 18
( 24 ) A2
A6 MA6
5.0V 9
12 5.0V 19 5.0V
( 25 ) A3 A5 MA5
10
11 5.0V 20
+B VCC A4 MA4
R539
1K R540
47K
+B +B +B
+B
+B +B
L29
+B +B
52
R563 47K
R562 47K
R564 47K
R565 47K
R566 47K
DIN STB
L
AC-3 ON
CONDITION
C581 1000P
L
IC52 74 L
C580 0.01
L
IC62 10 H
L
0V C579 0.1
L31
H
0V 12
42 FREQ1
L32
ANALOG IN(R) 44 0V C578 0.1
43 R573
RX3
220 13
AINIR 43 0V C577 0.1
R572 1.4V RX2
14
AINIL 2.3V 42 C576 0.1
RX1
220 15
44 C575 0.1
D52 ANALOG IN(L) AINAUX 41
5.0V DGND1
1 2.3V 16
40
CMOUT
VD+ +B
0V 17 IC62
FILT 39
DGND2
DIR
80 +
DAC, A/D
82 D51
CONVERTER
2.4V
18 38
AGND2 SCLK
5.0V 19
2.5V
+B VA+ 37
C899 LRCK
5.0V 1.5V
22u35 20
36
+B AGND1 SDOUT1
16 +
2.5V 21
VCC +B 35
C582 (L)AOUT1 SDOUT2 DIGITAL(FL,FR)
15 0.1
0V 2.5V 22 34
G (R)AOUT2
SDIN1 47
14
DIN2 81
1.5V
13
GND
12
GND DIGITAL(C,SW)
11 0V
GND 46
R834
10
GND 45
9 1M
DIGITAL(SL,SR)
X1
L72
x a o
C901 47P
L69
. i
AZ BA BB
IC60,89
DTS/AC-3 DIGITAL SEL. R973
( 3 )
C909 220
+B
R962 0.1
220
DSP SELCGTER IC60,89
IC59 INPUT 2 14
IC60
IC56 INPUT L L
IC52 INPUT L H
60
DSCK
C949
59
DSI
47P
58
DSO 5.0V
57 1.1V
SDI0 R963
56 1.5V 220
SDI1
55 2.5V
WSR
54
GNDS C908 C949
53 5.0V C557 10u50 22P
( 3 )
VCCQ +B
52 0.1
GNDQ ( 7 ) C993
0.1
51 2.5V
SCKR
50 2.5V
WST
49
SCKT
C556 C886 2.4V IC92
48 5.0V
VCCS +B
DIR-OUT
1.5V R546 470 0.1 47P
47 IC89 DETECT
SDO0 47
46 0V R545 470
SDO1 46 +B
45 1.5V R544 470
C992
SDO2 45
0.01
44
GNDS
43 0V
HREQ 3
R543 330
42 5.0V
SS 2
41 0V R542 330
C859
MOS 9
0.01
R536 C872
C931
10K 0.1
0.1
+B
5 R965 C887
220 47P
8
5.0V
+B
5
R538 4
2 5.0V
10
100 IC85
3
+B
Q Q
+B +B 3 7
C936
0.1
C935
C751 0.1
0.1
+B
R561
1K
R560
1K
R559
1K
R558
1K
+B
+B
+B +B
7.3V 7.3V
IC61 5V AVR IC57
C752
IN OUT IN OUT
+B +B +B
+ GND + 0.1 + GND
5.0V 5.0V
R998
470
R971 470
R972 470
u 1 6 3
y
BC BD BE
8 9 2 4
-B
+B
+B
C910
47P
IC90
+B +B
DTS
FREQ.
DIVIDER
C502
5.0V
0.01
IC86 SRAM IC87
5.0V
+B +B
C504
0.1
5.0V
+B
21
GNDA
5.0V
2.5V 22 5.0V
MCAS
( 22 ) MA3
2.5V 23
( MRAS
23 ) MA2
2.5V 24
( 24 ) MA1 MWR
4.9V 25
( 25 ) MA0 MRD
0V
0V 26
SCK/SCL
R501 470 2.5V 27 GPI00
IC92 EXTAL
C506
5.0V 28 GPI01
+B VCCQ
0.1 DTS ON:5.0V
29 GPI02
GNDQ DTS OFF:0V
30
IC52
PINIT
5.0V GPI03
31
DTS
C510 GNDP
8200P GNDD
0.6V 32
PCAP
C507 5.0V 33 MD0
+B
+B VCCP
VCCD
Q68 0.1 34
GNDS
MD1
0V 35
MISO/SDA
INVERTER C508 MD2
5.0V 36
RES
MD3
1000P R502 5.0V 37
6 3 1 5 1 5 0 8
MODA
GNDD
10K 38
MODB
MD4
39
MODC
C509 MD5
40
+B VCCS
MD6
0.1
5.0V
C511 MD7
22P
DR
IC53
(3/3)
( 18 )
3
5
C852
2.4V
0.01
5.0V
2
IC53
(2/3) 4 8
+B +B +B
6
+B
C521
0.1
+B
L11
R516
IN OUT
+B +B +B
2.7 1/4W GND
7.1V
5V AVR
L9 L27 5.0V
+ +
+B
IC73
+
5V AVR
L10 L28 L12
+B +B
+B
m
c o
.
BF BG BH
9 8 2 9 9
+B
+B
+B
5.0V
+B
IC55 1M DRAM
ROM
+B
+B +B +B
5.0V
21
GNDA
5.0V 22
( 22 ) MA3
5.0V 23
( 23 ) MA2
80 5.0V
80 5.0V 24
C863 ( )
79 24 MA1
5.0V 25
22P ( 25 ) MA0
78 5.0V
C865 0V 26
78
SCK/SCL
77 5.0V
77 22P R518 2.5V 27
EXTAL
R953 10K
2.5V 2.5V 2.5V C864 C529 470 5.0V 28
+B VCCQ
76
76 22P 0.1
29
GNDQ
75
IC54 IC54 IC54 30
IC56
74 R954 10K (3/6) (4/6) (5/6) PINIT
31
DOLBY
R955 10K 10 8 6 C533 GNDP
8200P 0.6V 32 DIGITAL
73 C530 PCAP
73 (AC-3)
0.1
72 5.0V 33
+B VCCP
11 9 5
34
71 2.5V
GNDS
71 C520
0.1 0V 35
70 5.0V
+B C531 MISO/SDA
69 2.5V 2.4V 1000P 5.0V 36
RES
69
68 2.5V 37
MODA 5.0V
68 BUFFER
38
67 2.5V
67 MODB
9 2 4 9 8 2 39 9 9
66
C532 MODC
0.1
65 2.5V 40
+B VCCS
65
64 2.5V
64
63 2.5V
63
62 2.5V
62
61 5.0V
C534
BUFFER
22P
2.4V
+B
IC54
14
(2/6) 4
3 2.4V +B +B
1
2 7 IC54
(1/6)
2.5V
X2
IC53 7
4MHz IC54 (1/3)
R517 (6/6) C948
12
1M 13 1 22P
5.0V
C870
0.1
+B