Panasonic TH-42PX20U-P Service Manual page 147

DG-BOARD TNPA2816AB (1/7)
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A D2255
MA3X152K0L
C2251
R2254
25V R2257
22K
220/10V 18K
VAO MUTE
Q2251
2SB1218A-TX_M
Q2255
2SB1218A-TX_M
R2251
22K
Q2254
2SB1218A-TX_M
Q2252
2SB1218A-TX_M
MAIN_DEF
R2252
Q2253
22K
2SD1819A-TX
B
C2252
50V
0.01
POFF_DEF
MAIN_DEF
VAO_MUTE
C
REG3.3V
C003
TP013 TP014
6.3V
100/10V JS001
C001
6.3V
100/10V C002
50V
0.01
Vo Vin
IC004
Nr GND
ON/OFF C009
PQ1L333M2SP 50V
0.01
C005
16V
0.1
C006 C007
C008
NC
35V 16V 35V
0.1
47/16V 47/16V
STB_3.3V
SBOJPG
GC_VP
D
RESET
GC_HFR
OSD_YS
GC_HP
FM_TRAP
Q001
R001 2SD1819A-TX
22
R004 VIDEO_MUTE
10K
2RF_SW
C004
50V
HDMIWP
1/50V R003
SCLHDMI
22K
SDAHDMI
DG40 AUDIO_MUTE25
E
1
2
OSD_YM
OSD_B
OSD_G
OSD_R
TEST_SW
DG41
1
FA1
2
3
4 SCL1
5 SDA1
6 SCL2
SDA2
7
REMOTE_BC
8
9
F
TH-42PX20U-P
DG-BOARD (1 of 7) Schematic Diagram
1 2
R2261
2200
STB3.3V
R2260
1K
AC OFF MUTE
MAIN9V
R2259
270
3.3V
R121
R069
100K 100
Q020
VAO SOUND DEFEAT 2SD1819A-TX
R120 R122
100 10K
C2253
R2265 C022
R123
50V
R2258 Q2258 47K 50V 100K
0.01
47K 100P
2SD1819A-TX
R060
R059
1200
2700
R048
2700
R054
2700
STB3.3V
X001
LN-M8-335
RESET
R007
C028
3900
50V
100P
C018 C016
VCC VO 50V 50V
100P 100P
SUB GND
R070
R031 0
47K
R071
1K
R026 100
R027 220
1 63
NC
[SBOJPG]
R028
100 2 PANEL_SOS 62
/VSYNC
3 (CEC_OUT) AFC2 61
R015
4 NC HDMIINT 60
220
5 /RST [JPGINT] 59
R017 100 6 HFR(ATSCINT) NC 58
7 57
/TEST T_SENSOR
R018 100 8 56
YS ATSCONOFF
9 IC001 55
(XRSTPKS) (HP_DET)
10 SYSCLK NC 54
TVRN062
11 (HFR) (TVON_OPT) 53
R022
100 12 /HSYNC POWDET_5V 52
1K MAIN MICON
R010 13 FM_TRAP(DA_SWPKS) [INT1JPG] 51
0.1
C049 50V 14 [INT0JPG] 50
OSDXI
0.1
R024 1K C050 50V 15 [XRSTJPG] 49
OSDXO
16 2RF_SW HP_DET(RELAY) 48
R025 1K
17 HDMIWP SBT1 47
R012 0 18 46
SCLHDMI NC(SBIPKS)
R013 0 19 45
SDAHDMI AC_SW(SBOPKS)
R008 2700 20 44
C012 C013 VCOI AUDIO_MUTE
50V PDO POW_ST
R009 2700 50V
21 43
100P 100P
R023 10K R030
R016
3300
150
C014
C034
50V
6.3V
3900P
6.8
R032
100
C035
16V
0.1
1%
R055
C024
680
50V
0.01
Q029 C032
R149 C029
4700 16V
16V
2SD1819A-TX
47/6.3V 47/6.3V
1%
R152
22K
R053
R047
2700
4700
3
SWITCH
IC005
C0JBAR000241
1 Y0 VDD 16
C047
2 Y2 X2 15 R163
50V 2SD1819A-TX
0.01
3 Y X1 14 4700
4 Y3 X 13
SWITCH
5 Y1 X0 12
5V
6 11
INH X3
7 10
VEE A
8 VSS 9
B
REMOTE
5V
KEY_SCAN1
STB3.3V
C037 C038
6.3V 50V
100/6.3V 1
IC002
C030 C031
50V 50V BR24C64F-E2
22P[JC] 22P[JC]
8 1 Q3804
A0
VCC
2SB1218A-TX_M
7 2
A1
WP
SCL1
R093 100 6 3
A2
SCL R3809
AFC1
SDA1
R094 100 5 4 R3806
SDA VSS
1K
EEPROM
R158
1200
R132 2200 LEDCTRL_SOS
R128 47K Q3801
R073 0 AFC2
2SB1218A-TX_M
R074 HDMIINT
1K
JPGINT
R081 1K R3801
5600
STB3.3V
R164 R3802 R3803
Q030
15K 3300 27K
R129 47K
2SD1819A-TX
R165
6800
R130 47K
Q3802
R166
6800 2SD1819A-TX
R085 1K INT1JPG
R086 INT0JPG
1K
R087 XRSTJPG
1K
R131 47K
R077 10K
Q008
R078 10K
2SD1819A-TX
R080 1K AUDIO_MUTE
R100
R099 12K
10K
R103
R097
240 220
Q004
Q006
C039
MAIN_Y_1
2SB1218A-TX_M C041 C043
R092 10V
2SD1819A-TX
50V 50V
10K 1[ZF]
R095 560P[JC] 470P[JC]
1K
Q005
2SB1218A-TX_M
R072
47K
Q009
2SD1819A-TX
C025 C027
R102
16V
6.3V
12K
1000P[KB] R101
47/16V
10K
R098 R104
R138 240 220
4700
SUB_Y_1 C040
C042 C044
Q007
10V
50V 50V
1[ZF]
R096 2SD1819A-TX 560P[JC] 470P[JC]
1K
R137
4700
Q024 R140
0
2SD1819A-TX
D002
MAZ30910ML
Q023
2SD1819A-TX
4 5
TO
S-BOARD
(S4)
TO
K-BOARD
(K12)
R148
Q027 220
KEY_SCAN1
JS3801
PT
L3801
10U
R3811
10K
C3802 C3803 49 32
P37/_SRDY3 P20
16V
6.3V
0.1 50 31
C3806 P36/SCLK3 P21
100
50V 0.01
51 30
P35/TXD3 P22
C3807
52 29
P34/RXD3 P23
50V 22
SCL2
53 28
P33/SCL P24
R3812 0.01
SDA2
54 27
P32/SDA P25
R3813 22
LOADER_MODE IC3801
55 26
P31/DA2 P26
R3814 100 56 25
P30/DA1 P27
M38047M6-C15FP
57 24
VCC VSS
58 21.P40/INT40/XCOUT 23
VREF XOUT
20.P41/INT00/XCIN
330
R3810 59 19._RESET 22
C3804 C3805 AVSS XIN
18.CNVSS/VPP
10K
16V 16V
60 17.P42/INT1 21
0.1 P67/AN7
47/16V
61 20
P66/AN6
62 19
P65/AN5
VPP12V
63 18
P64/AN4
64 17
P63/AN3
R3805
22K
Q3803
2SD1819A-TX
C3801
R3804
16V
220K
0.1
IC3802 C3808 C3809
16V 50V
47/16V 0.01
C0JBAR000241
1 16
Y0 VDD
2 15
Y2 X2
R3829
3 14 10K
Y X1
4 Y3 13
X
5 12
Y1 X0
6 11
INH X3
7 10
VEE A
8 VSS 9
B
SWITCH
D3802
MA3X152K0L
6 7
TP8100
1
2
3
4
5
6
7
CONVERT MICON
C3813
50V
X3801
33P[JC]
NX1255GA9.216MHZ
R3837
C3814
1M
50V
33P[JC]
C3811
2.2
16V
R3836
1K
C3812
16V
0.1
C3815
50V
0.056
IC3803
RESET
M51957BFP-600C
R3834 R3835
10K
10K
C3810
D3801
50V
MA3X152K0L
1000P
C3816
50V
1000P
8
TH-42PX20U-P
DG-BOARD (1 of 7) Schematic Diagram
8 9