Panasonic TX-20LA5F, Руководство по обслуживанию

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POWER SUPPLY BLOCK DIAGRAM
1
4
SW800
P1
MAINS IN
+
~
D
801
~
F800
Line
Filt
e
r
LF802
Line
Filt
e
r
LF803
P - BO
A
R
D
-
IC801
PO
W
ER
SUP
P
L
Y 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 D
806
Q803 D8
0
5
A
A1
3
1
÷
3
A3
3
RM1050
REM
O
T
E
V
CC
SB
Y
3
,3V
V - BO
A
R
D
SN
106
3
V1
3
TUNER
15
3
33V
A1
2
10
33V
4
5V
B1
10
B - B
O
A
R
D
4
5V
IC2000
M
SP3410
11,1
2,1
3
,6
5,6
6
5,0V
8,0V
39
IC1100
SD
A
5
550M
6,73
SB
Y
2
,5V_D
SB
Y
3
,3V_D
8,40
,75
,92
SB
Y
2
,5V_
A
22,5
6
IC1102
SDR
A
M
32
IC1103
EPRO
M
32,1
SB
Y
3
,3V_D
SB
Y
3
,3V_D
IC1101
EA
R
O
M
8
SB
Y
3
,3V_D
IC250
T
D
A
151
7
7
12V
IC1104
RES
E
T
IC
2
SB
Y
3
,3V_D
IC1105
RES
E
T
IC
2
24V
IC1500
VS
P94
0
5
5,28
,34
,66
1,8V
_D
3,3V
_D
7,12
,25
,72
35,4
2
,5
0,6
4
1,8V
_
A
3,3V
_
A
1,44
,59
,75
,78
A6
1
SERVICE
5,0V
A5
0
2
Q170
0
5,0V
A4
1
÷
5
24V_
IN
V
LCD PANEL
A -
B
O
A
R
D
IC1700
DPS
945
0
A
5,20
,32
,40
,48
,57
,68
,78
,86
,96
,10
4,1
12,
123
24,6
2
,9
1,1
1
8
129,
13
9 D
PS_3,
3D
IG
D
PS_1,
8D
IG
D
PS_3,
3
A
N
A
75,1
34,
14
3
D
PS_1,
8
A
N
A
33V
5V
SB
Y
3
,3V
24V
68
1,8V
_VS
P
D
851
D
852
D8
5
3
15
÷
16
4
÷
5
IC866
REG
1
4
IC860
REG
3
5
4
Q868 D8
6
2
D8
6
3
Q867
33V
12V
Q866
24V_
IN
V
F861
3,3V
_SB
Y
IC862
REG
1
2
24V
IC883
REG
1
6
5V
D
854
IC871
REG
4
5
8V
5V
24V
LC fil
ter
3,3V
_D
_SB
Y
2,5V
_SB
Y
2,5V
_
A
_SBY
2,5V
_D
_SB
Y
LC fil
ter
LC fil
ter
3,3V
Q890
1,8V
Q880
3,3V
_
A
3,3V
_D
LC fil
ter
LC fil
ter
1,8V
_
A
1,8V
_D
LC fil
ter
LC fil
ter
IC1701
LVDS DRIV
E
R
1,9,
26,
34,
44
3,3V
_LVD
S
3,3V
LC fil
ter
3,3V
_LVD
S
4
9