Panasonic TH-42PX20U-P Service Manual page 247

14.31. DG-Board Block Diagram
DG
Micom,Digtal Signal Processor Board
TO DV7
DG51
SUB9V
SUB9V 19
SUB9V SUB9V
20
SUB5V
SUB5V 22
SUB5V
SUB5V 23
HDMI INT
INT 6
HDMI WP
AUDIO MUTE
5
SCL1
S_CLOCK1
3
SDA1
S_DATA1 4
SCL HDMI
S_CLOCK0
8
SDA HDMI
S_DATA0
9
DVI Y
DVI Y 13
DVI PB
DVI PB 15
DVI PR
DVI PR
17
DVI R
DVI R 26
DVI L
DVI L 28
TO H1 DG1
AUDIO L
SUB PB
AUDIO L
103
AUDIO R
AUDIO R
303
VAO MUTE SUB PR
VAO MUTE 104
DVI L
SUB Y
DVI L
217
DVI R
DVI R
417
DVI Y
DVI Y 415
DVI PB
DVI PB
116
DVI PR
DVI PR
316
JPEG Y
JPEG Y
111
JPEG C
JPEG C
211
SUB PB
SUB PB
206
SUB PR
SUB PR 306
SUB Y
SUB Y
405
MAIN PB
MAIN PB
307
MAIN PR
MAIN PR 407
MAIN Y
MAIN Y
107
AFC1
AFC1
204
AFC2
AFC2
304
S3
S3
408 MAIN Y
V3
V3
409
C3
MAIN PB
C3
309
R3
R3
310
L3
L3
210 MAIN PR
Y3
Y3
109
MAIN Y
IC4508
5V
AVR 3.3V
1
3
IC4521
5V
AVR 3.3V
1
3
IC4503
5V
AVR 3.3V
1
3
IC4507
5V
AVR 3.3V
1
3
TH-42PX20U-P
DG-BOARD BLOCK Diagram
SUB-PB
Q4522 Q4526 Q4531 Q4533
SUB-PR
Q4523 Q4527 Q4530
SUB-Y
Q4524 Q4529 Q4532
SUB Y
Q4560 Q7
MAIN Y
Q6
Q4559
MAIN-PB
Q4502 Q4505 Q4509 Q4512
MAIN-PR
Q4503 Q4506 Q4513
Q4510
MAIN-Y
Q4501 Q4508 Q4511
IC4504
MEMORY
3.3V
5
5.6Mbit FIFO
IC4505
5V
2.5V A/D
3.3V 2.5V
5 1 3
2 6
IC4522
5V
2.5V D/A
5 3.3V 1 5 2.5V
3
IC4511 IC4509
5V 5V
AVR 3.3V PLL 2.5V
3.3V 3.3V
5 1 5 1
3 3
IC4502
GC 2S+
SYNC
A/D 8bit
SEPA
VIN1
60MHz
89
Detection
VIN2
A/D 8bit Sync
101
60MHz
525i/p
VIN3
625i/p
103
A/D 8bit
720p
60MHz
1080i
Macrovision
SELF,ID,ED2
NOISE LEVEL
YUV
RGB
18 SCL
RGB->YUV
17 SDA
2D COM CHROMA DEM.
COLOUR DETECT
161 172 173 177 178 179
32 21 20 16 15 14 116 117
A/D 10bit
VIN1
72
10bit
VIN2 A/D 10bit MATRIX
83
RGB->YUV
10bit
VIN3
A/D 10bit
95
10bit
3D/2D com
VPK
CHROMA DEM.
COLOUR DETECT.
D/A 10bit
110MHz x3
D/A 10bit x3
200 201 202 237
IC4501
GC 2M+
2.5V
5
5V
5V
IC4518
MEMORY
64Mbit
SDRAM
CLK
NR/IP MEMORY
CONTROL
I/F
H SCALEER
GAIN ADJ
MULTI SUPER
PROGRESSIVE
I/F
Y 148 157 Y 135 144
UV
UV 162 171 180 189
Y
17 22
Y
36 45 Y 58 49
UV 22 31
UV 4 13
SYNC
VPO3 162
SEPA
HPO3
161
Detection
HFR 63
I/F TBC
Sync
525i/p
625i/p
NR FF
720p
I/F
1080i
Macrovision
FF IP NR
SELF,ID,ED2
JUST
NOISE LEVEL
PICTURE
SW
IMPROVEMENT
RGB PROCESSOR
D/A 8bit D/A OSD
x2
CONT
240 248 198 199 148
IC4517
AVR 3.3V
3.3V
1 5
3
IC4516
AVR 2.5V
2.5V
1 5
3
IC4515
10bit A/D
9 14
25 28
GC VP
GC HP
GC HFR
1 2
R R-IN
13 INPUT
BRIGHT DET.
G
G-IN
15 INPUT
BRIGHT DET.
B
B-IN
17 INPUT
BRIGHT DET.
DR
CONTRAST
CONT. CO
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