Panasonic TH-42PX20U-P Service Manual page 263

14.39. D-Board (1 of 2) Block Diagram
D
D-Board(1of2)Block Diagram
LVDS:Low Voltage Differential Signaling
D6
TX0-
2
TX0+
3
TX1- 5
TX1+ 6
TX2- 8
TX2+
9
TX3-
14
TX3+
15
TXC- 11
TXC+ 12
TO DG-BOARD
DG3
D3 (1/2)
Y S
40
PB S
38
PR S
36
HD
34
VD 32
NCLP
31
SCL1
SDA1
SCL1 4
SDA1
5
SCL2
6
SDA2
7
SCL3 SCL3
8
SDA3 SDA3
9
SMM
SOUND MAIN MUTE
12
CABLE DET
CABLE DET
13
TH-42PX20U-P D-BOARD (1 of 2) BLOCK Diagram
LVDS/TTL(PARALLEL)
9
10
11
12
15
16
19
20
17
18
IC9023
SDA2
5V->3.3V
SCL2
HS
17 3
VS
15 5
CLP
13 7
IC9711
SWITCHING
SCL2(IIC 5V)
SDA1(IIC 5V)
7
1 2
6 5
IIC_CONT
Q9719
3
5V->3.3V
Q9704 SCL2(3.3V)
5V->3.3V
Q9703
SDA2(3.3V)
SDA2
SCL2
IC9002
IC9005
BUS SWITCH
OE
1
R/G/B
27
55
CLK OUT
26
HS OUT
3
VS OUT
5
IC9009
A/D CONVERTER(SUB)
PLL
G
Y/G IN G
48 CLP
110M
8BIT
B
Pb/B IN
CLP B
43
ADC
R Pr/R IN
54 CLP
R
57 SDA2
SYNC/SEPA
SCL2
56
38 30 31
IC9709
SUB MPU(CONVERTER)
IC9004
IC9003
SWITCHING
INVERTER
2 4
5
2
IC9008
67
BUS SWITCH
G(8Bit)
G7 2
OE
G0
9
B(8Bit)
B7
12
B0
19
R(8Bit)
R7 70
R0
77
VD
VS OUT
64
HD
HS OUT
66
RESET
LSI RESET
42
(1/2)
DATA IN
11
DATA OUT
10
MC CLK
9
Q9001
INV.
3
CLKC
6
1
7
101