-3-
Chassis Block Diagrams
F
ront
key
A1901A
RC
PRE-AMP
.
D1910
LED
5V
-2
6
7
ANT
VIDEO IN
A
UDIO-IN
A
UDIO MONIT
OR OUT
FR
ONT
A
V
IN
REAR
A
V
IN
VIDEO IN
IC802
MEMOR
Y
6
5
4
3
SCL
SD
A
Ke
y
i
n
R/C in
31
29
Stand b
y
Mute
Protect
27
10
8
AFT
BLK
B
G
R
36V
9
11
IF OUT
CPU
1
VIF
RF A
G
C
A101
TUNER
X161
SA
W Filter
15V
40
SELECTED VIDEO OUT
1
51
42
A
UDIO-OUT
Ext.A
UDIO-IN
Ext.VIDEO-IN
RF A
G
C
AFC
ABL
28
13
4
IF in
IF in
6
AFT
SIF out
SIF in
IF V
CC
VIDEO VER
T
V
CC
RGB VCC
HOR. VCC
5V
-2
10
52
54
8
43
5
18 25
H-VCC
9V
9V
-1
8
5VRC
14
15
16
17
R
G
B
BLK
46
44
35
34
VIDEO-OUT
INT
. VIDEO
IN
R-Y IN
9V
-1
B-Y IN
R-OUT
G-OUT
B-OUT
H-OUT
V
-OUT
19
20
21
27
23
IC201
IF/VIDEO/
CHR
OMA
MUTE
A
UDIO-IN
A
UDIO
OUT
IC001
A
UDIO AMP
.
(MONO)
IC281
SECAM
6
7
Lo
w B
5V
-2
TELETEXT UNIT
TEXT: R
TEXT: G
TEXT: B
TEXT:
BLK
180V
VIDEO IN
14
SECAM KILLER
1
5
IC501
VER
T
./DEF
.
SWITCH
VR631
130V
Reg.
Reg.
24V
15V
9V
5VRC
Reg.
Reg.
24V
Protect
T431
H-DRIVE TRANS
.
Q432 H-OUT
25V
130V
B
G
R
9V
H
V
L902
DY
AFC
ABL
T471
FBT
Q901
CR
T
Heater
HV
180V
Heater
Lo
w B
36V
H-VCC
9V
-1
5V
-2
Protect
PO
WER SUPPL
Y CIRCUIT
Protect
4/5
IC801
12
28
19
20
21
22
SP901
7
5
3
9
REAR
MONIT
OR
OUT
VIDEO MONIT
OR OUT
A
UDIO-IN
11/12
2
Q431
H-DRIVE
13
15
IC2001
TELETEXT DECODER
8
9
10
12
16/17
1
CR
T UNIT
T611
CONVER
TER
TRANS
.
2
AUDIO MONIT
OR OUT
IIC Bus
IIC Bus
IIC Bus
IIC Bus
1 / 2
MAIN SIGNAL PROCESSING CIRCUIT
✻
Teletext decoder and SECAM
decoder are not equipped.
✻
✻