Read Panasonic TX-20LA5F / TX-20LA5P (serv.man3) Service Manual online
POWER SUPPLY BLOCK DIAGRAM
1
4
SW800
P1
MAINS IN
+
~
D801
~
F800
Line
Filter
LF802
Line
Filter
LF803
P - BOARD
-
IC801
POWER
SUPPLY
23
20
19
16
15
11
10
7
T801
13
14
7
8
6
1
3
4
IC803
IC802
IC850
REG
K
Q851
P4
17
÷19
Q805
D806
Q803
D805
A
A13
1
÷3
A3
3
RM1050
REMOTE
VCC
SBY3,3V
V - BOARD
SN1063
V1
3
TUNER
15
3
33V
A12
10
33V
4
5V
B1
10
B - BOARD
4
5V
IC2000
MSP3410
11,12,13,65,66
5,0V
8,0V
39
IC1100
SDA5550M
6,73
SBY2,5V_D
SBY3,3V_D
8,40,75,92
SBY2,5V_A
22,56
IC1102
SDRAM
32
IC1103
EPROM
32,1
SBY3,3V_D
SBY3,3V_D
IC1101
EAROM
8
SBY3,3V_D
IC250
TDA1517
7
12V
IC1104
RESET IC
2
SBY3,3V_D
IC1105
RESET IC
2
24V
IC1500
VSP9405
5,28,34,66
1,8V_D
3,3V_D
7,12,25,72
35,42,50,64
1,8V_A
3,3V_A
1,44,59,75,78
A6
1
SERV
ICE
5,0V
A50
2
Q1700
5,0V
A4
1
÷5
24V_INV
LCD PANEL
A - BOARD
IC1700
DPS9450A
5,20,32,40,48,57,68,78,86,96,104,112,123
24,62,91,118
129,139
DPS_3,3DIG
DPS_1,8DIG
DPS_3,3ANA
75,134,143
DPS_1,8ANA
33V
5V
SBY3,3V
24V
68
1,8V_VSP
D851
D852
D853
15
÷16
4
÷5
IC866
REG
1
4
IC860
REG
3
5
4
Q868
D862
D863
Q867
33V
12V
Q866
24V_INV
F861
3,3V_SBY
IC862
REG
1
2
24V
IC883
REG
1
6
5V
D854
IC871
REG
4
5
8V
5V
24V
LC filter
3,3V_D_SBY
2,5V_SBY
2,5V_A_SBY
2,5V_D_SBY
LC filter
LC filter
3,3V
Q890
1,8V
Q880
3,3V_A
3,3V_D
LC filter
LC filter
1,8V_A
1,8V_D
LC filter
LC filter
IC1701
LVDS DRIVER
1,9,26,34,44
3,3V_LVDS
3,3V
LC filter
3,3V_LVDS
4
9
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