Panasonic TC-20LB30 Service Manual page 50

A-BOARD TNPH0580 (4/5)
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
TC-20LB30 A-Board (4 of 5) Schematic Diagram
28 29
TO
LCD PANEL
K1KA20A00272 A8
R925
0
C929
16V
330u
R905
820
*
R903
100k
D909
MAZ80510ML
R907
0
D910
MA2J11100L
MAIN5V
R900
33
L902
82u
D900
MAZ80330HL
D902
C903
B0JANG000003
50V
330u
JS902
0
TV5V
R948
C901 2.2k JS903
16V
0
0.1u
JS901
0
D912
MAZ81300ML
MAIN9V
IC906
C0DBEZE00005
MAIN 2.5V
MAIN2.5V
C931 C932 C933
R928 16V 16V
10V R929
1.5k 0.1u 100u
1u 1.5k
L4023
0
Q4035
C4284 C4285
B1DHDC000021 50V 50V
4.8 4.8 0.01u
0.01u
4.8 4.8
4.8 0.2
C4282
50V R4295
R4293
100p 22k 1k
C4283
0
10V
Q4036 3.1
1u
Delay
UNR521100L
0
30 31
R934
0
1 4
2 3
L903
C927 R930
G1BYYYJ00004
1k 0
AB_INV_ON
IC901
C0DAAZG00006
R912
SUB 11V
0
<
MAIN3.3V
IC902
R908 R936
1k
4.87k C0DBEZE00005
R913 C910
C908 16V
C905 MAIN 3.3V 1.65k R914
R909 10V
16V 100u
820 1k
1u
470u
JS905
0
SUB9V
IC903
C0CBAYF00004
9.0
R926
2 IC907
SUB 9V 160
OUT
C0DBEZE00005
11.0 7.8
ADJUST
3 IN 1 MAIN 5.0V
JS904
0
C936 R927
C907 50V 1k C911
C909 C913
50V 16V 10u 16V 16V
10u 0.1u 0.1u 100u
C904
16V D913
0.1u
B0ECKM000003
JS906
0
R055
0
AB_DCC_B0
C4286
16V
AB_DCC_B1
47u R4296
100
AB_DCC_B2
R4297
0
32 33
TO
POWER UNIT
(CN2)
A9
K1KB19A00005
R933
0
C924
C923
16V 50V
330u
SUB5V 330u
IC904
C0DBEZE00005
MAIN 1.8V
R916
C914 C915
453 R917
10V
1k 16V
1u 100u
JS907
0
TV-ON
JS910
0
C938 C939
10V R943 10V
1u 3k R944 1u
1k
R065 R063
0 0
AB_LCD_B7
AB_LCD_B6
AB_LCD_B5
AB_LCD_B4
AB_LCD_B3
AB_LCD_B2
AB_LCD_B1
AB_LCD_B0
AB_LCD_G7
AB_LCD_G6
AB_LCD_G5
AB_LCD_G4
AB_LCD_G3
AB_LCD_G2
AB_LCD_G1
AB_LCD_G0
AB_LCD_R7
AB_LCD_R6
AB_LCD_R5
AB_LCD_R4
AB_LCD_R3
AB_LCD_R2
AB_LCD_R1
AB_LCD_R0
AB_LCD_VS
AB_LCD_CLK
TC-20LB30 A-Board (4 of 5) Schematic Diagram
34
51
MAIN3.3V
52
53
54
AB_MAIN_SW
55
56
R9076 R9077
0
50
0 0 R9041
GND
EXB38V101JV
3.2
49
U/D
3.2
48
L/R
4.8
47
VDD
4.8
46
VDD
4.8
45
VDD
4.8
44
VDD
3.1
43
3.1
42
3.1
41
3.2
40
3.2
39
0
38
GND
0
37
GND
0
36
B7
IN4 OUT4
0.8
35
B6
FL9001 IN3 OUT3
J0HAAB000027 1.4
34
B5
IN2 OUT2
1.1
33
B4
IN1 OUT1
0
32
GND
0.3
31
B3
IN4 OUT4
0.3
30
B2
FL9002 OUT3
IN3
0.3
J0HAAB000027 29
B1
IN2 OUT2
0.1
28
B0
IN1 OUT1
0
27
GND
0.4
26
G7
IN4 OUT4
0.4
25
G6
FL9003 IN3 OUT3
0.4
J0HAAB000027 24
G5
IN2 OUT2
0.6
23
G4
IN1 OUT1
0
22
GND
1.1
21
G3
IN4 OUT4
1.1
20
G2
FL9004 IN3 OUT3
J0HAAB000027 1.2
19
G1
IN2 OUT2
0
18
G0
IN1 OUT1
0
17
GND
1.4
16
R7
IN4 OUT4
2.3
15
R6
FL9005 OUT3
IN3
0.7
J0HAAB000027 14
R5
OUT2
IN2
0.9
13
R4
IN1 OUT1
0
12
GND
1.0
11
R3
IN4 OUT4
1.1
10
R2
FL9006 IN3 OUT3
J0HAAB000027 1.3
9
R1
IN2 OUT2
1.5
8
IN1 OUT1 R0
0
7
GND
0
6
ENB
R9073
0 3.2
5
VS
3.2
4
HS
R9074
0
0 3
GND
R9075 1.5
2
CK
TO
0
R9071 1
0 GND LCD PANEL
A15
57
58
35 36