9-1
BLOCK DIAGRAMS < LCD TV Section >
System Control Block Diagram
A74G0BLS
KEY
-IN2
43
CN102
KEY SWITCH
KEY
-IN2
KEY
-IN1
KEY
-IN1
34
KEY SWITCH
IC3006
(SUB MICR
O CONTR
OLLER)
IC3015
(MAIN MICR
O CONTR
OLLER)
TU3001
(TUNER UNIT)
CN3002
19
RESET
XOUT
XIN
RESET
IC3001
+3.3V
X3002
Q3002
4MHz
OSC
RESET
IC3009
+3.3V
DIGIT
AL MAIN CB
A UNIT
PO
WER SUPPL
Y CB
A
J
A
CK CB
A
IR SENSOR CB
A
LED CB
A
FUNCTION CB
A
PO
WER SUPPL
Y
CB
A
PO
WER SUPPL
Y
CB
A
CN001
REMO
TE
SENSOR
RCV891
AL+3.3V
D102
PO
WER
ST
ANDBY
D101
LED2
66
CN101B
REMO
TE
22
LED1
77
LED3
55
CN302
Q102
LED2
19
19
CN3014
REMO
TE
88
CN3014
SD
A
66
CN302
SCL
44
CN3018
Q3025
Q3026
SD
A1
12
13
CN7501
SCL1
11
14
LED1
LED2
REMO
TE
LED1
18
18
CN202
17
31
32
LED3
20
20
LED3
29
3
60
23
22
A5
C6
PO
WER-KEY
PO
WER-KEY
28
E25
A
UDIO-SEL3
A
UDIO-SEL2
A
UDIO-SEL1
A
UDIO-SEL3
A
UDIO-SEL2
A
UDIO-SEL1
T
O A
UDIO-1
BLOCK
DIA
GRAM
A7
B7
C7
D
VD-A
UDIO-MUTE
D2
14
15
I2C-CLK-TUNER
I2C-D
A
T
A-TUNER
AE16
AF16
SCL
SD
A
SCL
SD
A
F26
F24
SCL2
SD
A2
AD21
EEPR
OM-WP
XOUT
XIN
X3005
B18
A18
25.14MHz
OSC
RESET
AD5
IC802
(T
ONE CONTR
OL)
SCL
SD
A
14
13
IC7001
(VIDEO/A
UDIO SELECT
OR)
SCL
SD
A
25
27
IC3026
(MTS/SAP A
UDIO SIGNAL PR
OCESS)
SCL
SD
A
27
24
IC3017
(MEMOR
Y)
SCL2
SD
A2
6
5
WP
7
IC3014
(DIGIT
AL SIGNAL PR
OCESS)
SCL2
SD
A2
37
38
IC3023
(HDMI INTERF
A
CE)
SCL2
SD
A2
28
27
IC3004
(GAMMA CORRECTION)
SCL2
SD
A2
44
43
DRIVE
B
UFFER
B
UFFER
A
UDIO-MUTE
A
UDIO-MUTE
AMP-MUTE
AMP-STBY
V
-COM
T
O A
UDIO-2
BLOCK
DIA
GRAM
T
O D
VD DIGIT
AL
SIGNAL PR
OCESS
BLOCK DIA
GRAM
< D
VD SECTION >
(CN601)
C24
AMP-MUTE
B24
BA
CKLIGHT
-PWM
AMP-STBY
AE21
BA
CKLIGHT
-ON
B26
D
VD-REMO
TE
AD15
T
O DIGIT
AL
SIGNAL PR
OCESS
BLOCK DIA
GRAM
T
O SYSTEM
CONTR
OL / SER
V
O
BLOCK DIA
GRAM
< D
VD SECTION >
(CN401)
27
BA
CKLIGHT
-ON
12
PR
O
TECT1
1
P-ON-H
26
V
-COM
5
D
VD-CS
16
D
VD-SD
A
T
A
11
D
VD-SCLK
9
LED-CONT
50
D
VD-DISC-OUT
36
D
VD-DISC-IN
35
D
VD-PWR-REQ
38
CN303
CN3017
4
4
D
VD-SCLK
3
3
D
VD-A
UDIO-MUTE
5
5
D
VD-CS
7
7
D
VD-SD
A
T
A
8
8
D
VD-REMO
TE
6
6
D
VD-PWR-REQ
2
2
LED-CONT
21
21
D
VD-DISC-OUT
20
20
D
VD-DISC-IN
D
VD-A
UDIO-MUTE
10
CN104
CN103
LED3
11
LED1
22
P-ON-H
22
DVD-MAIN-PO
WER
22
22
T
O PO
WER SUPPL
Y
BLOCK DIA
GRAM
P-ON-H
D
VD-MAIN-PO
WER
33
D
VD-MAIN-PO
WER
21
D
VD-SCLK
22
D
VD-CS
24
D
VD-SD
A
T
A
25
D
VD-REMO
TE
26
D
VD-PWR-REQ
2
LED-CONT
3
D
VD-DISC-OUT
23
D
VD-DISC-IN
CN201
4
5
7
6
PR
O
TECT1
P-ON-H
BA
CKLIGHT
-PWM
BA
CKLIGHT
-ON
CN3001
TO
INVER
TER
BLOCK
DIA
GRAM
(CN552)
TXD1
RXD1
TXD
RXD
14
15
AD16
AF17
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