Kenwood VR-7070A, Service Manual

Page: 5 / 8

5
AT AV AX AU AW
VR-7070A/7080A
X25-6620-10 (2/2)
5.1V
0V
C720
33P
1
R756 180
VDD
1/4W
R814
CTLB 2
1/4W
+12V
1 4.7K
2 200
CTLA 4
+12V
6
5
V.MUTE 3
+
C662
100u10
1
+5V
100u10
+
C659
1/4W R813
1
+5V
+2.5V
+3.3V
VID. D GND 1
+5V
470
10
R81
1
1
13 12
11
14
+9.9V
+3.3V
5
C661
0.01
4
+
C654
10u50
C CTL
OUT VCC
GND
1
2
3
R670
4.7
C660
82P
+9.9V
R665
22K
+2.5V
C656 R812
1/4W
47u25
+
1
+2.5V
13
9
11
2
V OUT
3
V IN
EXT
1
VSS CE
R664
560
1/4W
4
5
+2.5V
+9.9V
R671
1 1/4W
OUT IN
GND
C666
0.1
C665
33P
4.7K
R676
1K
R673
R674
47K
R672
C667
220
R675
220
4700u16
+
+9.9V
10
+9.9V
18 2W
R666
R677
1.5K
+9.9V
+12V
R758 180
1/4W
12
13
R685
1
+
R757 180
1
19
10
44
20
180
CP604
14
8
9
11
CP603
180
1
12V 12V
R709
4.7K
29 R OUT2
2.7K
2200P
R718
100K
R714
C716
4 5 3 2
C623
0.01
1
3
11 12
6 5 4
VSS
7
10 9 8
26
10u50
C722
27
+
1
+
10K
C726 R724 100K R728
8200P
18K
R726
8200P
C724
15K
R722
R730
5.6K
6
5
100K R723 C725
47P R727
1800P
10K
C719
2
C721
10u50
C712
10u50
R667
220
12
10
8
29
+
R725
2.2K
2200P
C723
R721
2.2K
4.7K
R729
3
R716
C714
820P
2.2K
R712
3.3K
5.6K
R720
6
5
+5V
C621
2.2u50
C619
0.1
22u50
C673
+
R663
220
19
20
CDT
O
IN T
1
16
15
+
22
A
VSS
DZF2 CSM C CLK CDTI
19 18
17
21
20
A
VDD
VREF H
23
26
V COM
DZF1
L OUT3
24
25
R OUT3
L OUT2
27
28
2200P
R710
4.7K
10u50
C711
+
14
44
28
R713 100K C715
2200P
R717
2.7K
2
C713
820P
2.2K
R715
3.3K
R711
R719
5.6K
3
C702
10u50
10u50
31
+
26
28
27
30
+
R706
2.2K
C704
R702
2.2K
R704
100K C706
5
1800P
R708
10K
6
2.2K
C705 R703 100K
2.2K
1800P
R707
10K
C700
47P
2
3
C718 100P
C737
22P
R739
10K
1K
1
+12V
12V
100P
C728
12V
4
7
100
R746
+12V
C727
100P
8
C741
1000P
R747
100
8
1
2
+12V
3
R745
12V
R744
220
4
7
R749
2.7K
R737
10K
R740
12V
C742
100P
4
7
6 5
C738
22P
1
R748
100
10K
R750
R738
10K
2.7K
14
GND
ST
N.C.
VSS
+12V
C717
8
100P
1
220
R743
+12V
12V
11
100P
15
14
C744
13
12
10
9
8
7
6
C709
4700P
12V
R742
220
7
4
C708 100P C710 100P
+12V
C707 100P
8
1
R741
220
1
4.7K
5
4
R751
3
2
12V
R752
5.6K
20
SW
N.C.
CK
DATA
16
17
18
19
21
22
23
24
25
17
16
30
RS IN2
RS
FR
LS
LS IN2
FL
26
27
VDD
28
29
+12V
4.7K
R753
R754
5.6K
SLA
VE
38 39
RX3
P
VDD
P
VSS
31
L OUT1
R OUT1
29
30
L IN
R IN
32
33
0.1
34 35 36 37
RX4
R
R639
18K
C631
1/4W
R640
4.7
C701
+5V
30
31
C791
C703
2200P
R705 R701
470P R791
18K
C792
R792
470P C740
10K
10K
R735
R736
C739
10u50
+
10u50
+
32
33
18K
+12V
VR-705-SA
+B
B
+12V
VR-716A
MODEL NAME
+5V
+5V
+B
+5V
+5V
SW
Q606
D607
D606
WH120
900
3/5
D614
D613
+3.3V AVR
CN901
X09-A/9-
+2.5V AVR
SW
Q608
AVR
+5V
D610
Q609
D609
D608
D604
SPACE
CHANNEL
(M)TYPE ON
IC701
IC703 (1/2)
IC703
IC702
IC702 (1/2)
(2/2)
SHIFTER
LEVEL
(2/2)
ADC&DAC)
ODEC
(2/2)
(1/2)
IC707
CENTER
SR
IC707
MIX
SW
(2/2)
SL
FR
CONFIGURATION
IC901,902
FILTER
IC701-703,707
IC701 (1/2)
D602
IC705
D603
IC604
IC609
IC612
IC611
IC606
IC605
IC603
IC602
IC601
Q609
Q608
Q606
Q601,901,902
UDZ5.6B or : D606,607
D900-902
D610
D609
FL
MM1228XF
NJU7311AM
NJM4565MD
:
:
:
1SR154-400
HZU5.1(B2)
UDZ5.1B or
HZU5.6(B2)
D2SBA20F03
:
:
:
D604
D603
D602,605
D601,608,613,614
TC7WH123FU :
BA033LBSG
XC62EP2502MR
TC74HC07AF
TC74HCT7007AF
:
BA05T :
:
:
:
CS493263-CLR
TC7WU04FU
AK4586
CS493263-CLG or
:
:
:
MA142WK
HZU3.9(B2)
MA142WA
DAP202U or
UDZ3.9B or
1SS300 or
:
:
1SS301 or
DAN202U or
MA111
:
:
DIGITAL LINE
SIGNAL LINE
GND LINE
B LINE
B LINE
2SC4081(R,S) or :
2SB1218A(Q,R)
2SD1819A(Q,R)
2SA1576A(R,S) or
:
DTC124EUA or
2SB1375
UN5212
:
:
(X08-3230-10)
IC611
IC609
IC612
IC605
IC705
IC602
The DC voltage is an actual reading measured with a high
impedance type voltmeter with no signal input. The mea-
surement value may vary depending on the measuring
instruments used or on the product.
BD-1
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