Alba L42M1 - Schematic Diagrams; Main Board Circuit Schematics

42″LCD TV ALBA L42M1
44
10. Schematic Diagram
10.1 Main Board
1) POWER-1
0.6 x (1+1.1K/1.2K) = 1.15V
MEM_V REF6
USE 330uF 16V GF
DV33
AC_D etect
SMD/0402
C108
10U 16V
R782 100R 1/16W 5%
R106
3.9KOHM +-5% 1/10W
TP1001
+5V_STB
R791
10KOHM +-5% 1/10W
From +5V_SW to +1V8/+1V1
1%
STB_PWR5V
BRIGHT_ADJ14
C121
100N 16V
C806
NC/100N 16V
R147
68KOHM +-5% 1/ 10W
R102
NC/ 22K 1/10W
+5V1_TUN
AC_Detec t
SMD/0402
USE 330uF 16V GF
DV11
R119
33K 1/10W 5%
Q108
MMBT3904
3
1
2
DV33
R155
10K 1/10W 5%
DC POWER INPUT
Q103
NC/ SI3441BDV
1
2
34
5
6
D
D
GS
D
D
GPIO_16
R117
1.2KOHM +-1% 1/10W
C127
NC/10U 10V Y5V
+5V_SW
R104
3.9KOHM +-5% 1/10W
+5V1_ TUN
+5V_SW2,5,8,9, 10,11,12,13, 14
OPCTR L3
R154
NC/ 1K 1/10W 5%
STANDBY:
Normal: High
Stand_by: Low
DV114
+5V1_TUN2
C114
NC/4.7UF 10V
R123
1.1KOHM +-1% 1/10W
R124
240 OHM +-1% 1/10W
+
C110
100uF 10V
+5V_STB TO +5V1_TUN
FOR IF 5V HAS DIP
U103
L5947
1
2
3
45
6
7
8
9
Vout
SYN C
INH
COMPFB
FSW
GND
Vcc
TH1
MEM_V REF
DV33SB2,4,5,7, 10,12,13,14
OPCTRL34,5
INVER TER_ON_OFF
1%
R132
1K 1/10W 1%
STB_PWR5V
+5V_SW
R107
10K 1/ 10W 5%
R126
1K 1/16 W 5%
+5V_SW
BRIGH T_ADJ
R144
1K 1/16W 5%
STAND_BY13
R146
100 OHM +-5% 1/ 10W
STANDB Y
C128
330P 50V
+5V_STB2,5, 10,13
L10115uH
OPWRSB5
Q104 SI5441DC
1
2
3
45
6
7
8
D
D
D
GS
D
D
D
+12V2,9,13
INVE RTER_ON_OFF:
Normal: Hi gh
Stand_By: Low
DV18_DDR2,6
R113 10 0R 1/ 16W 5%
R100
NC/ 22K 1/10W
DV18_DDR
C106
100N 16V
+5V_STB(+5V1) TO +5V_SW BY OPWRSB
STANDBY
DV332,4,5,7, 8,11,12,13,14
R103 NC /33K 1/ 10W 5%
FB101 220R/ 2000mA
1 2
SMD/04 02
GND2,3, 4,5,6, 7,8,9, 10,11,12, 13,14
GPIO_16
R150
NC/ 10K 1/10W 5%
DV18_DDR
+5V_STB
+24V13
+
C111
330UF 16V
DV33SB
Q107
MMBT3906 PNP
+
C112
330UF 16V
SMD/0402
OPWRSB(+5V_SW ON/OFF):
Normal: High
Stand_By: Low
TP1031
OPCTRL3
TP1051
C124
100N 16V
TP1011
U104
L5945
1
2
3
4 5
6
7
8
9
Vout
SYN C
INH
COMP FB
FSW
GND
Vcc
TH1
+5V1_ TUN
L102 15uH
C102
33N 16V
SMD/ 0402
STAND_BY
+
C107
470uF 10V
R130
22K 1/10 W
IN VERTER_ON _OFF14
GPIO_165,7
+12V
R149
NC/ 10K 1/10W 5%
GND
C119
1UF 6V3
1%
+24V
C105
100N 16V
STAND_BY:
Normal: Low
Stand_by : High
+5V_STB
OPWRSB
MEM_V REF
Q100
NC/ BC847C
3
2
1
D101
SS2P4
1 2
+5V_STB
Q752
2SK1828
+
C101
330UF 16V
+5V_STB
Q101
BC847C
3
2
1
TP1061
DV18_DDR
TP1041
C126
NC/ 100N 16V
1%
R115
2.2KOHM +-1% 1/10W
R790
10KOHM +-5% 1/10W
TP1021
BRIGH T_ADJ
OPWRSB
BRIGHT_A DJ:
Normal:Max:+3V3, Min:0V
Stand_By: 0V
C120
100N 16V
+12V
C104
33N 16V
C132
10U 16V
+5V_STB
INVER TER_ON_OFF
DV18_DDR stabilizer
STANDBY
R131 1K 1/ 10W 1%
R789
NC/ 0R05 1/10W 5%
D100
SS3P4
1 2
R148 1K 1/10W 5%
Q106
BC847C
0.6 x (1+2.44K/1. 2K) = 1.82V
CN100
CONN
1
2
3
4
5
6
7
8
9
10
11
12
13
SMD/04 02
+5V_SW
R125
0R05 1/ 16W
R120 0 R05 1/ 8W
DV11
R122
1.2KOHM +-1% 1/10W
C130 1uF 16V
FB100 220R/ 2000mA
1 2
DV33
+24V
STAND_BY
R145
10KOHM +-5% 1/10W
CN101
CONN
1
2
3
C129
330P 50V
C131
NC/1uF 16V
R101
NC /22K 1/ 10W
STANDBY:
Normal: High
Stand_by: Low
DV33