Panasonic TC-20LA2, Service Manual

Page: 42 / 47

9.7. A-Board (4 of 5) Schematic Diagram
+
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+
+
+
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+
+
AB_LCD_ENB
AC_LCD_B4
AC_LCD_R5
AC_LCD_G2
AC_LCD_B3
AC_LCD_B1
AC_LCD_G0
AC_LCD_B7
AB_LCD_HS
AC_LCD_B5
AC_LCD_G3
AB_LCD_VS
AC_LCD_B2
AC_LCD_B6
AC_LCD_G5
AC_LCD_G7
AC_LCD_R7
AC_LCD_G1
AC_LCD_B0
AC_LCD_G6
AC_LCD_G4
AB_SUB_ON
AC_LCD_R4
AC_LCD_R3
AC_LCD_R2
AC_LCD_R1
AC_LCD_R0
AC_LCD_R6
AB_LCD_CLK
AI
AB_KEY AB_MAIN_SW
Rx3+
Rx3-
RxCLK+
RxCLK-
Rx2+
Rx2-
Rx1+
Rx1-
Rx0+
Rx0-
DCC
GND
GND
GND
GND
GND
GND
PANEL_5V
PANEL_5V
AB_DCC_B2
PDIM
AB_INV_ON
AB_SOS
AB_PANEL_ON
GND
AB_TV_ON
MAIN3.3V
IC904
C0DBEZE00005
1
IN
2
ON/OFF
3
OUT
4
V_adj
5
GND
6
OUT
R917
1k
R916
453
C901
16V
0.1u
IC902
C0DBEZE00005
1
IN
2
ON/OFF
3
OUT
4
V_adj
5
GND
6
OUT
R914
1k
R929
1.5k
C932
16V
0.1u
C4283
10V
1u
Q4035
B1DHDC000021
C4284
50V
0.01u
R930
0
R928
1.5k
MAIN3.3V
C4277
50V
0.01u
C4286
16V
47u
C909
0.1u
16V
R903
100k
R4285 0
R912
0
R944
1k
R4291
56k
JS904
0
R907
0
SUB9V
C4285
50V
0.01u
R4289 0
JS906
0
C924
330u
50V
SUB5V
D902
B0JANG000003
C4272
50V
0.01u
C4273
16V
47u
D909
MAZ80510ML
IC901
C0DAAZG00006
1
V IN
2
SW out
3
GND
4
VO S
5
ON/OFF
R4297
0
C4275
50V
0.01u
MAIN9V
IC4018
C0JBCZ000512
1
RS
2
TD1
3
TA5
4
TA6
5
GND
6
TB0
7
TB1
8
TD2
9
VCC
10
TD3
11
TB2
12
TB3
13
GND
14
TB4
15
TB5
16
TD4
17
R/F
18
TD5
19
TB6
20
TC0
21
GND
22
TC1
23
TC2
24
TC3
25
TD6
26
VCC
27
TC4
28
TC5
29
GND
30
TC6
31
CLK_IN
32
/PDWN
33
PLL_GND
34
PLL_VCC
35
PLL_GND
36
LVDS_GND
37
TD+
38
TD-
39
TCLK+
40
TCLK-
41
TC+
42
TC-
43
LVDS_GND
44
LVDS_VCC
45
TB+
46
TB-
47
TA+
48
TA-
49
LVDS_GND
50
TD0
51
TA0
52
TA1
53
GND
54
TA2
55
TA3
56
TA4
C938
10V
1u
C903
330u
50V
R4281 0
A11
K1KA20A00272
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
MAIN2.5V
C929
330u
16V
R4295
1k
C931
10V
1u
JS910
0
R4282 0
C4274
50V
0.01u
R4296
100
R943
3k
L4022
J0JGC0000021
MAIN3.3V
C0CBAYF00004
IC903
IN
3
2
OUT
ADJUST
1
C906
50V
6800p
R4286 0
D913
B0ECKM000003
JS907
0
C905
16V
470u
MAIN5V
R055
0
IC906
C0DBEZE00005
1
IN
2
ON/OFF
3
OUT
4
V_adj
5
GND
6
OUT
C936
10u
50V
R4287 0
C914
10V
1u
L903
G1BYYYJ00004
1
2 3
4
C933
16V
100u
C4276
50V
0.01u
R4276 0
C904
16V
0.1u
R4283 0
C4279
50V
0.01u
R4284 0
R926
160
D912
MAZ81300ML
R913
1.65k
L902
82u
D900
MAZ80330HL
R909
820
C4280
50V
0.1u
R936
1k
C908
10V
1u
R4288 0
Q4036
UNR521100L
JS901
0
IC907
C0DBEZE00005
1
IN
2
ON/OFF
3
OUT
4
V_adj
5
GND
6
OUT
A8
K1KA20A00272
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20
R4275
0
A9
K1KB19A00005
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19
C910
16V
100u
C939
10V
1u
C913
16V
100u
C4282
50V
100p
JS903
0
R4277 0
C923
330u
16V
C911
16V
0.1u
JS914
R934
0
R900
33
R4280 0
R908
4.87k
C907
10u
50V
C915
16V
100u
R4290
33k
L4023
J0JGC0000021
JS905
0
R905
820
R933
0
R4292
0
R4293
22k
R927
1k
D910
MA2J11100L
R948
2.2k
R925
UNHH20600L
INVERTER_14V
GND
INVERTER_14V INVERTER_14V
REG_5V REG_5V POW_ON_PULSE
INV_GND
KEY POWER_ON
GND
UNREG_32V
+14V +14V +14V
+14V
ON/OFF
PDIM DIM AI DIM
INVERTER_14V
STB_5V GND GND GND
SUB 11V
MAIN 3.3V
SUB 9V
INV_GND INV_GND INV_GND
INV_GND
INV_GND INV_GND INV_GND INV_GND
+14V +14V
PWM
32 34 35 29 30 31 36 33 28
1.2
3.2
0.9
0.9
0
0.6
0.4
0.4
0.5
3.3
1.0
1.2
1.2
0
0.9
0
1.0
0
1.4
0.8
1.3
3.3
1.3
2.2
0
3.2
1.2
0.6
0
0
1.5
1.2
0
3.3
0
1.1
1.2
0.9
1.1
1.1
0.4
3.3
1.0
1.3
1.2
0
1.3
0.9
0
0
1.2
3.0
0
1.1
1.3
1.1
14.0 14.0 14.0 14.0 14.0 14.0 0 0 0 0 0 0 0 0
0
1.2
1.2
1.1
5.0
0
1.3
1.2
0
1.2
1.1
1.2
0
0
5.0
0
1.2
1.1
0
0.7
5.0 0 14.0 14.0 14.0 0 0 0 14.0 0 2.5 3.2 5.0 5.0 0 0 0 0 36.6
36.8 11.0 0 1.5 2.3
0 5.0 3.3 4.7 1.2
3.3
4.7
1.8
5.0 0 1.8 1.2
5.0
9.0 9.0 0 5.0 1.2
9.0
7.8 11.0
2.5
5.0 0 2.5 1.2 4.7
4.7
4.7
4.7
4.7
4.7 0
3.1
0
0
LCD PANEL
TO
LCD PANEL
TO
(CN1)
MAIN 1.8V
MAIN 5.0V
3.2 4.5 1.8 0 0 0
MAIN 2.5V
58
55
53
51
56
54
57
52
31
36
32
33
34
39
40
38
37
35
42
43
41
POWER UNIT
TO
A-BOARD TXN/A10KYJ (4/5)
LVDS
TC-20LA2/2D
A-Board (4 of 5) Schematic Diagram
TC-20LA2/2D
A-Board (4 of 5) Schematic Diagram
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