Kenwood DV-K750 Service Manual page 22

K L
A
18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
+
+5V
+5V
-12V
+12V
+5V
0V
IC25 LATCH
NOR IC26 LATCH
4.9V 5.0V
IC32
OUT IN
+5V +5V
GND
RESET
R271 10K R272 39K R274 39K
+5V
C152 0.01
IC23
16
GND
4.4V
D15
0.2V 1 16 1.8V 17
SEL NRSTO
VCC
1.9V
15 C83 1
0.2V
2 ST
0.7V
1.8V
1A 14 0V C213 22P
2.1V 4A
0V
3
13 18
1B
2.2V LRCKO
4B
0.2V 12 0V 19
4
1Y 4Y DATA0
C214 22P
11
1.7V 5
3A
2A
10 0.2V 20
0.3V 6
3B BCKO
2B
C215 22P
9 21
2.1V 7
3Y TEST0
2Y
IC1
8 22
TEST1
GND
23
NC D.R.I.V.E.
24
16 20bit
SEL.(W02/DRIVE) NC 0V
C144 22P 25
8F SLRCKO
C145 22P
26
8F S DATA0
C146 22P
27
8F S DATA0
C147 22P
28
8F SBCKO
29 0.5V
NC
1.3V 0.9V
30
+5V VDD
4.9V C140
C72 10P
0.01
C211
10P
C139
100u10
IC28 IC30 +
1.3V
5 5
2 4 2 4
2.1V
2.4V
3 C212 R99
3 L6
10P 220
R233 1M
C74 10P W1
1 2 3 4 5 6 7 8 9 10 11 12
P2
CN2
TC74HC175AF LM2940CT-12 LC89170M
TC74VHC00FS
M N
B
E301
5 4 3 2 1
+5V
+12V
5.0V -12V
+5V
+5V
-12V
+12V
+5V
D8
+5V
0V
IC24 SER PAR
R143 1
4.9V C1
1000u10
+
C3 0.1 4.9V
1
C84 1 4.9V
2.4V
6
3.8V
2.1V
( 6 )
1.1V
2.2V
( 8 )
0V
+5V
0V
( 10 )
4.9V
(
11 )
0.5V
( 9 )
( 13 )
4.2V
4.9V
60
GND
59
NC
0V 58
0.9V
NC
57
1.8V
N MUTE 2.4V
56
LRLH
3.9V
55
1.8V
MMOD1
C141
54 100u10
1.1V
MMODO
+
53
1.8V
HCKO
1.3V
52
0V
MCKO
51
0.5V
0V
VDX C7
50 R183
0.6V
X0 5.0V
0.1 C5
1000u
49
X1 C8 10 0.5V
48
+
GND X 0.1
47
C12
NC C142
46 0.01
0.1
VDD
C11
0.1
+5V
4.9V
3.9V
1.8V
0.9V
1.8V
C206 150P
0V
( 6 )
C205 100P
0V
( 8 )
C204 100P
5.0V
( 1 )
0.5V
13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
E
TC74HC02AF
TC74HC14AF
TC74HC74AF
O P
4.9V
IC33
+5V
IC2 1bit DAC
R3 R91 R5
1.5K 1.5K 1.5K
24
1
SERIAL INPUT 8X DZFL
DVSS
INTERFACE INTERPOLATOR 23
2
DZFR R1 R93 R7
DVDD
22 4.9V 1.5K 1.5K 1.5K
3
AVDD
CLOCK
21
4
DIVIDER
MODULATOR
5
PD
20
AVSS
2.3V
6 19
8X
INTERPOLATOR SCF 2.3V
18
7
R4 R8
8 1.5K R94 1.5K
9 17 2.3V 1.5K
MODULATOR
S MUTE SCF
R2 R92 R6
10 16 2.3V
1.5K 1.5K 1.5K
DFS
11
DE-EMPHASIS 15
12 D2
CONTROL
14
13 0V
+5V
4.9V
IC3 1bit DAC
R67 R97 R71
1.5K 1.5K 1.5K
24
1
SERIAL INPUT 8X
DZFL
DVSS
INTERFACE INTERPOLATOR
23
2
DZFR
DVDD R65 R95 R69
22
3 1.5K 1.5K 1.5K
AVDD
CLOCK
21
4
DIVIDER
MODULATOR
20
5
AVSS
PD
1.8V
19
6
8X
INTERPOLATOR SCF 1.8V
18
7
8
17 2.3V
9
MODULATOR
SCF R66 R96 R70
S MUTE
16 2.3V 1.5K 1.5K 1.5K
10
DFS
15
11
R68 R98 R72
DE-EMPHASIS
1.5K 1.5K 1.5K
14
12
CONTROL
13
0V
IC4 1bit DAC
R37 R141 R41
1.5K 1.5K 1.5K
1
SERIAL INPUT 8X
DVSS 24
INTERFACE INTERPOLATOR DZFL
2
23
DVDD R35 R139 R39
DZFR
3 1.5K 1.5K 1.5K
22
CLOCK
AVDD
4
DIVIDER
21 4.9V
MODULATOR
5
20
PD
AVSS
6
2.3V
19
8X
7 INTERPOLATOR SCF 2.3V
18
R38 R142 R40
8
1.5K 1.5K 1.5K
17 2.3V
9
MODULATOR
SCF R36 R140 R42
S MUTE
16 2.3V 1.5K 1.5K 1.5K
10
DFS
15
11
DE-EMPHASIS
14
12
CONTROL
13 0V
+5V +5V
KAN03 TC7SHU04FU
Q R
+12V
-12V
C111 R263
120P 100
R133 9.1K
IC10
0V
Lt
(1/2)
2
1 0V
-
3
+
8
+12V
11.9V
-11.9V
-12V
Rt
4
5
+ 7 0V
6
-
0V
IC10
0V
(2/2)
R132 R134
9.1K 9.1K
40KHz LPF
C112 R264
120P 100
R253
0V IC8
100
1.2V
IC5
(1/2)
(1/2) Lch R17 20K 2 C29
2
1 220u16
-
1
-
3
3
+ +
+
8
0V 0V
8
11.9V
11.9V
1.2V C221
ADD
8200P
+12V +12V
0V
-11.9V
-12V -12V
1.2V -11.9V
Rch
5 4 C30
6 4
+ 7 220u16
+ 7
R18 6
5
- +
-
0V
IC5 20K IC8 R254
0V
(2/2) (2/2)
100
1.2V
C90
R81 C71 R255 0.082
10K 120P 100
R80 10K R82 10K
1.2V
IC6 0V IC16
0V
(1/2) Cch 0V (1/2)
2 R79 0V
2
- 1 10K 2 R105 R106 -
3 - 1 4.3K 4.3K 3
+ +
0V 3
0V + 8
8
IC14
1.2V
11.9V ADD 8 0V
(1/2)
11.9V
+12V
-12V
R85 10K
-11.9V IC14
-11.9V -11.9V
40KHz LPF
(2/2) 0V
R86 10K 5 4
1.2V + 7 0V
SW
6 5 4 C98
0V -
LFEch + 7 220u16
5 4
0V 6
+ 7
- +
6 R88 10K
0V IC16
-
0V
IC6 (2/2)
C73 R256
1.2V
(2/2) 0V
120P 100
90Hz
HPF
C96
0.047 R108
40KHz LPF
30K
0V
IC9
1.2V
IC7
(1/2)
C53
(1/2) 2
SLch
C49 C51 220u10
2 - 1
0.22 0.22
- 1 3
+
+
3
0V
+ 8
0V
11.9V 0V
8
11.9V
1.2V
+12V
90Hz HPF
-11.9V
-12V
1.2V
0V -11.9V
SRch
5 4 C50 C52
+ 7 0.22 0.22 5 4 C54
6 + 7 220u10
-
0V 6
0V
IC7 - +
0V
1.2V (2/2)
IC9
(2/2)
+5V
PQ20VZ11 S-80740AL-A4 TC74HC157AF
S T
+5V +5V
+12V
-12V
B A
IC20
SEL.
R15 12K
FL
+12V
-12V
FR
R16
12K
C123 R265
120P 100
R151 20K
0V 11.9V
2 8
1
-
3
+
IC12(1/2)
C95
1 10u16
ADD AMP
+
90Hz
LPF IC12
(2/2)
+12V
5
+ 7
6
-
4
-11.9V
-12V 0V
R152 20K
C124 R266
120P 100
C
IC18
-11.9V
SL
SELECTOR
IC18 (TRUE TABLE)
12 SUBW SW 10
+12V
H S31=S32 SW
L S31=S30 L,R
5 C12 SW
S20=S21,
-12V
H (5.1ch)
S10=S11
L OPEN (2ch)
L/R
SR
+5V