Schematic Diagram; Main Board - Haier A626 Service Manual

26"&32"&37" LCD TV

10. Schematic Diagram

10.1 Main Board

715G3462 D
1) Power-1
BRIGHT_ADJ:
Normal:Max:+3V3, Min:0V
Stand_By:0V
DC POWER INPUT
INVERTER_ON_OFF:
Normal: High
Stand_By: Low
CONN
12 INVERTER_ON_OFF
11 BRIGHT_ADJ
10
+12V
9
8
7
6
5
+24V
4
3 R113
2 STB_PWR5V
1
R105
CN100
10KOHM +-5% 1/4W
0.6 x (1+2.44K/1.2K) = 1.82V
15uH L101
DV18_DDR
1
2
D101 3
C112 + 4
SS2P4
330UF 16V
R124
300OHM1/10W
R104 C129
USE 330uF 16V GF
C102
R115 33N 16V
1%
R117
1K2 1/10W 1%
1%
STB_PWR5V
FB100 220R/2000mA
1
FB101 220R/2000mA
1
STANDBY:
Normal: High
Stand_by: Low
DV33
R144
1K 1/16W 5%
SMD/0402
SMD/0402
100R 1/16W 5% STANDBY STANDBY
R126
Q106 1K 1/16W 5%
BC847C SMD/0402
C124
100N 16V
SMD/0402
C108 C132
10U 16V 10U 16V
U104 U103
L5945 L5947
8 8 1
Vout Vcc Vcc Vout
7 7 2
SYNC GND GND SY NC
6 6 3
INH FSW FSW INH
5 5 4
COMP FB FB COMP
C128
From +5V_SW to +1V8/+1V1
+5V_STB
2
2 C107 C106
+
100N 16V
470uF 10V
OPWRSB(+5V_SW ON/OFF):
Norm al: High
Stand_By: Low
OPWRSB
R154
STAND_BY
STAND_BY:
Normal: Low
Stand_by:
High
+5V_SW
C110
+
100uF 10V
0.6 x (1+1.1K/1.2K) = 1.15V
L102 15uH
DV11
D100
+ C111
SS3P4
330UF 16V
R125
R106
USE 330uF 16V GF
C104 R123
33N 16V
1%
R122
1K2 1/10W 1%
1%
58
Haier A626&A632&A637F
+5V_STB +5V_SW
Q104 SI5441DC
8 1
D D
7 2
D D
R119 6 3
D D
5 4
S G
C105 + C101
330uF 10V
47KOHM +-5% 1/10W 100N 16V
C130 1uF/16V
R130
33KOHM +-5% 1/10W
R107 22KOHM +-5% 1/10W 2 Q101
BC847C
C121 C114
100N 16V NC/4.7UF 10V
+5V_STB(+5V1) TO +5V_SW BY OPWRSB
DV18_DDR
R131 1K 1/10W 1%
MEM_VREF
R132
1K 1/10W 1% C119 C120
1UF 6V3 100N 16V
SMD/0402
DV18_DDR stabilizer
+5V_SW +5V1_TUN
R120 0 OHM +-5% 1/8W
+24V
13 +24V
+12V
2,9,13 +12V
+5V_STB
2,5,13 +5V_STB
+5V_SW
2,5,8,9,10,11,12,13,14 +5V_SW
+5V1_TUN
2 +5V1_TUN
DV18_DDR
2,6 DV18_DDR
DV11
4 DV11
OPWRSB
5 OPWRSB
STAND_BY
13 STAND_BY
BRIGHT_ADJ
14 BRIGHT_ADJ
INVERTER_ON_OFF
14 INVERTER_ON_OFF
DV33
2,4,5,7,8,11,12,13,14 DV33
DV33SB
2,4,5,7,10,12,13,14 DV33SB
MEM_VREF
6 MEM_VREF
GND
2,3,4,5,6,7,8,9,10,11,12,13,14 GND