Video Amp - Kenwood KVT-512DVD Service Manual

Z
KVT-50DVDRY/512/522DVD
/522DVDY/532DVD/532DVDM
37
38
8.1V
P-FL
P-FR
C447
10
48 4.0V
PREF
47 0V
PGND
46
LDOUT1L
45
3.3V
LDOUT1R
44
LDOUT2L P-RL
43
LDOUT2R P-RR
42 0V
GND
41 8.1V
VCC
40
ACIN0L
39
ACIN0R
38
ACIN1L
37
ACIN1R
36
ACIN2L
35
C448 R486
3.3V
ACIN2R
1 1K
34
ACIN3L AVOUT-L
33 C449 R487
ACIN3R AVOUT-R
1 1K
6 7
8
4
13 14
34
VIDEO SELECT
IC361
0.8Vp-p 0.7Vp-p
1 16
IN1B IN1A
15 0V
2
2
0.8Vp-p GND1
CTL1
0 14
3
IN2B
OUT1
0V 4 13 5.1V
GND2 V+
5
12
OUT2
CTL2
0.7Vp-p
6
11
OUT3
IN2A
R513
7
10 0V
CTL3
0.7Vp-p 0.8Vp-p GND3
100
C499
8 9
IN3A IN3B
34
X15-110x-xx (6/11)
AA
36
38
14
3.3V
55
6
5
4
0.2V
38
3.3V
C457
DGND
330u6.3
+
14
0.9V
Q451
∗
AGND
R480
2.7K
ESDGND
35
4
14
1
11
13
34
C500
0.01
R518
C496 1K
DVD-R
1 R516
C497 1K
16
1
R515
100
C498 R519
DVD-G
1 R517 1K
1K
1
31
DVD-B
AB
37
14
1
RIN+7
2
PDN
2.5V
0V 3
CAD1
4
SCL
5
SDA
0V 6
CAD0
7
INT
8 IC358
Q0
9
AV SWITCH
Q1
10
Q2
11
Q3
12
Q4
13
DVDD
0V 14
DVSS
15
VOUT1
16
VFB1
0V
R482
1.2K
C460
Q452
∗ 0.1
C464
68P
R494
270
Q453
35
8
6 7
8
16
34
31
D396
D413
31
D401
R463
R464 75
R465 75
R466 75
20 19 18 17 16 15 14 13 12 11 10
CN355
NAVIGATION
AC
DVD-AR
DVD-AL
37
36
13
48
GND2
C477
4.7
47
RIN+1 DVD-AR
2.5V
46 C478
LIN+1 DVD-AL
4.7
C479
45
GND1
44 1
ROUT3
43
LOUT3
42
ROUT2 SUB-R
41
LOUT2 SUB-L
2.5V
40
ROUT1 MAIN-R
39
LOUT1 MAIN-L
38 0V
AVSS
37 2.5V
VCOM
C481
36 2.5V
MUTET
1 R495
35 1.3V
R
34 5.0V 12K
AVDD
0V
C475
0.1
33
VIN6 1.8V
C476
10
AGND
C467
0.1
C468
10
VGND
13
13
1
11
13
2.0Vp-p
16
DVD-B
1
D397
DVD-G
D398
D399
D400
DVD-R
D403
D414
75
D402
ESD
VGND
GND
9 8 7 6 5 4 3 2 1
AD
R669 R670
47K 47K
Q653
Q683
C229
0.01
IC652
3.0Vp-p
8
1
VCC
13
7
4.0V
2
4.0V 3 6
0V 4 5
36
GND
L.P.F
C663
2200P 2
C672
1
Q65
R673
2.7K
R674
2.7K
C673
Q654
10
R677 R676
390K 100K
0V IC651
9
AGND VOUTR
4.0Vp-p
VOUTL
10
VCOM VCC
11
2.5V
ZEROA NC
0V
12
TEST
DGND
13
DEMP 0V
14 LRCK
MUTE
15 DATA
FMT
R651 16 BCK
SCK
AGND
22
A-DAC
6

VIDEO AMP

IC601
6
5.0V 1 VCC
PS 5
GND
6dB
2 75
CLAMP
3 4
LPF
IC602
1.5Vp-p
8
CLAMP LPF
6dB
9 75
BIAS
GND
0V 10
GND2 BI/CL
6dB
11 75
LPF
12
PS
6dB
5.1V 13
V+2 LPF
1.5Vp-p
V+
CLAMP
14 75
1.5Vp