Panasonic TH-42PX20U-P Service Manual page 380

DG
Micom,Digtal Signal Processor Board
TO DV7 DG51
SUB9V 19 SUB9V
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
Q4522 Q4526 Q4531
AUDIO R
AUDIO R
303
VAO MUTE SUB PR
Q4523 Q4527 Q4530
VAO MUTE 104
DVI L
SUB Y
DVI L
217
Q4524 Q4529 Q4532
DVI R
DVI R 417
DVI Y SUB Y
Q4560 Q7
DVI Y 415
DVI PB
DVI PB MAIN Y
116
Q6
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 Q4559
V3
409
C3
MAIN PB
C3
309
Q4502 Q4505 Q4509 Q4512
R3
R3
310
L3
L3
210
MAIN PR
Y3
Q4503 Q4506 Q4513
Y3
109
Q4510
MAIN Y
Q4501 Q4508 Q4511
IC4508
IC4504
5V
AVR 3.3V
1 5 3.3V
5.6Mbit FIFO
3
IC4521 IC4505
5V 5V
AVR 3.3V 2.5V A/D
1 5 3.3V 1 3 2.5V
3 2 6
IC4503 IC4522
5V 5V
AVR 3.3V 2.5V D/A
1 5 3.3V 1 5 2.5V
3 3
IC4507 IC4511
5V 5V
AVR 3.3V AVR 3.3V
1 5 3.3V 1 5 3.3V
3 3
TH-42PX20U-P
DG-BOARD BLOCK Diagram
IC4502
GC 2S+
SYNC
CLK
A/D 8bit
SEPA
SUB-PB
VIN1
60MHz
Q4533
89
Detection
SUB-PR
VIN2
A/D 8bit Sync
101
60MHz
525i/p
SUB-Y
VIN3
625i/p I/F
103
A/D 8bit
720p H SCALEER
60MHz
1080i
GAIN ADJ
Macrovision
SELF,ID,ED2
NOISE LEVEL
YUV
RGB
18 SCL
RGB->YUV
17 SDA
2D COM CHROMA DEM.
COLOUR DETECT
Y 148
UV 162
161 172 173 177 178 179
16 15 14
32 21 20 116 117
Y 36
UV 22
SYNC
A/D 10bit SEPA
MAIN-PB
VIN1
72
10bit
Detection
Sync
MAIN-PR VIN2 A/D 10bit MATRIX
83
525i/p
RGB->YUV
10bit
625i/p
MAIN-Y VIN3
720p
A/D 10bit
95
1080i
10bit
Macrovision
SELF,ID,ED2
MEMORY NOISE LEVEL
3D/2D com
SW
VPK
CHROMA DEM.
COLOUR DETECT.
RGB PROCESSOR
D/A 10bit
D/A 8bit
x2
D/A 10bit x3 110MHz x3
200 201 202 237 240 248 198
IC4501
IC4509
5V GC 2M+
PLL 2.5V
1 5 2.5V
3
DG22 1 3
IC001
MICOM
IC4517
2 12 6 84 35 38
5V
AVR 3.3V
1 5 3.3V
3
80 78
IC4516
5V
IC4518 AVR 2.5V
IC005
MEMORY 1 5 2.5V
SWITCHING
3
64Mbit
Y Y0
SDRAM
3
Y1
X X0
13
X1
IC3003
I/O PORT
NR/IP MEMORY
SCL 15
CONTROL
SDA 14
IC3004
SLOT DETECTION DAC
IC4515
SCL 15
10bit A/D
MULTI SUPER SDA 14
PROGRESSIVE
OSD YM
1 B
OSD YM
I/F
4 OUT
157 Y 135 144
IC4519
9 14 OR GATE
UV
171 180 189
OSD YS
Y 17 22 25 28
B
1
OSD YS
4 OUT
IC4520
OR GATE
45 Y 58 49
31
UV 4 13
GC VP
VPO3 162
GC HP
HPO3
161
GC HFR
HFR
63
I/F TBC
1 2 3 4 5
NR FF
I/F
FF IP NR
R R-IN
JUST
13 INPUT
R-OUT
BRIGHT DET.
PICTURE
G G-IN
IMPROVEMENT
G-OUT
15 INPUT
BRIGHT DET.
B-OUT
B
B-IN
17 INPUT
BRIGHT DET.
D/A OSD
CONT CONTRAST DRIVE CUT OFF
CONT. CONT. CONT.
199 148 23 22 21
IC4512
RGB AMP
DG7 20 17 15 13 11 10
TO G7
6 7 DG21 3 4 5 6 DG6 1 3 16 19 20 13 14 18
PSTATUS
AC TVON
51 50 49 1 82 81 44 25 60 17 18 19 66 65 61 62 72 8 23 27 26
5
IC002
Y
EEPROM
IC3801 TXD 14 3
RXD 15
WP 7
1 SCL2 X
CONVERT MICON
SCL 6 SCL2 53 13
5 SCL1
SDA 5
SDA2
54
12 SDA2
RST 19
14 SDA1
IC003
IC3802
IC3803
RESET OUT
6
IC3517
RESET SWITCHING
OUT 4
SWITCHING
Q2254 Q2253
IC004
2 1 SCL3
Q2252
6 5 SDA3
5V
REG 3.3V
Q2255 Q2251
IC3699
3 5 3.3V
Q2258
EEPROM
4
SRQ 7
SCL3 SCL 6 SCL3
SDA3 SDA 5 SDA3
IC8071 IC8009
IC8076
SYNC INPUT SELECT SWITCHING
GC HD GC HP
X0
X 5 6 3
12
13 GC VP
PC HD X1
5
14 3
GC VD Y0 13
1
Y
PC VD 1
Y1
3
5
9
IC8054
SYNC
IC8008
SEPARATION
G-IN SELECT
6 HIN HD- 15
I0 SEL VIN 13
7 5 8 VD+
6 I1 COM 1 Q8015 4 GIN CLP 17
IC8200
IC8201
RGB SELECT
RGB LPF
IN1A
OUT1
Q4554 Q4557
11 16
3 25 RINA
PC R IN1B
1
1 GINA
Q4555 Q4558 IN2A
9
OUT2
11
5 5 BINA
PC G
IN2B
14
Q4553 Q4556
7
IN3A
IC8030
OUT3
8
6
PC B IN3B
TEST SW
9
IC4513
R
2 RIN
5V
AD 2.5V
G
3 GIN
2.5V
1 3
B
9 BIN
2 6
TESTSW
IC4514 TESTSW
5V
AVR 3.3V
3.3V
1 5
3
27 24 3 1 DG18 1 3 5 DG30 10 4 6 8 1 2
TO G18
DG2 32 33 36
IC8031
14 15
EX. I/O
Q27
10 SWGC PC
24 79 69 45 64 73
SWGC
PC
DG8 TO PA8
9 SDA2
10 SCL2
11 SDA1
SCL1
12
FA1
14 FA1
Y0 TXD TU1
LOADER
1 17 LOADER IN SEL
TXD TU1
Y1 TXD TU0
3 TXD TU1
5
RXD TU1
X0
RXD TU1
4 RXD TU1
12
X1 RXD TU0
18 AB SDA3
14
LOADER
19 AB SCL3
A 10
TO K12
AMUTE25 DG12
MAIN DEF R LED
2 R LED
G LED
3 G LED
VAO MUTE
AUDIO MUTE
POFF DEF
DG41
4 SCL1
5 SDA1
6 SCL2
BUFFER
7 SDA2
FA1
GC HD
2 FA1
I2 O2 4
REMOTE
GC VD
I3 O3 6
BC
VD S
8 REMOTE BC
I6 O1 2
HD S
I1 O5 10
I4 O4 8
12 11
DG3 TO D3
VD S
22 VD S
HD S
24 HD S
REMOTEBC
Q20
R
ROUT 17
G
GOUT 14
15 REMOTE OUT
B
R
BOUT 11 26 R
B
28 B
G
G
30
LED SOS
17 LEDCTRL SOS
PSTATUS
5 POWER STATUS
R
TXD TU0
ROUT 1
7 TXD TU0
RXD TU0
G
9 RXD TU0
GOUT 4
B
SW CLP
8
BOUT
NCLP
21
5
6
TH-42PX20U-P
DG-BOARD BLOCK Diagram