1-9-3
E68C4BLVIS
Video Input Select Block Diagram
T
O DIGIT
AL
SIGNAL
PR
OCESS
BLOCK
DIA
GRAM
T
O VIDEO
OUTPUT SELECT
BLOCK DIA
GRAM
REC VIDEO SIGNAL
A
V CB
A
(VIDEO INPUT SELECT)
IC1209
JK1211
S-VIDEO
IN3
(REAR)
3
4
2
1
Y
Y1
VIDEO4
TU/LINE
MUTE
MUTE
MUTE
Y2
C1
C2
C
JK1212
S-VIDEO
IN4
(FR
ONT)
3
4
2
1
Y
C
VIDEO-IN4
(FR
ONT)
JK1201
13
19
20
15
10
12
2
21
4
22
23
24
VIDEO-SW2
T
O SYSTEM CONTR
OL
BLOCK DIA
GRAM
VIDEO-SW3
TU1201 (TUNER UNIT)
24
VIDEO OUT
CONTR
OL
LOGIC
BUFFER
LPF
BUFFER
LPF
D
VD MAIN CB
A
CN601
21
21
VIDEO-Y/CVBS
23
23
VIDEO-C
CN1204
Q1231
BUFFER
Q1232
BUFFER
VIDEO-SW1
VIDEO-Y/CVBS
VIDEO-C
IC1219
(VIDEO INPUT SELECT)
29
33
32
28
1
3
5
30
31
6dB
AMP
CONTR
OL
LOGIC
6dB
AMP
DRIVER
B
UFFER
DRIVER
JK1206
VIDEO2 IN
20
VIDEO IN
20
CN2001
CN1210
VIDEO-IN2
10
10
J
A
CK CB
A
JK2001
D
VD-VIDEO
VIDEO-OUT2
VIDEO-OUT1
T
O VIDEO
OUTPUT SELECT
BLOCK DIA
GRAM
IC1220
(VPS)
VPS-V
SD
A
D
A
VN-L
D
A
VN-L
SCL
6
14
7
16
SD
A
SCL
A,C
Comparison Char
t of
Models & Marks
Model
Mark
DR-A2677
DR-A2631
A
B
DR-B2737
C
www.freeservicemanuals.info
12/1/2013
www.nostatatech.nl
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