Schematic Diagram; Main Board - Haier LT19Z6 Service Manual

10. Schematic Diagram

10.1 Main Board

715G4035
1. Power-1
BRIGHT_ADJ: STANDBY:
Normal:Max:+3V3, Min:0V Normal: High
Stand_By:0V Stand_by: Low
INVERTER_ON_OFF:
Normal: High
Stand_By: Low
CONN
For +5V_DVD USE
1
INVERTER_ON_OFF
2 BRIGHT_ADJ
PWR_12V
3
4
5
6
7
8
PWR_24V_16V
9
10
11
STB_PWR_5V
12
13
R703
CN701
NC/10K 1/4W C701
NC/22U 10V
DC POWER INPUT
+5V_STB
FB705
220R/2000mA
2 1
C704
10N 50V
SMD/0402
U701
MP9403EN-LF-Z
9
Thermal Pad
1 8
2 BS SS 7
IN EN
3 6
SW COMP
4 5
C719
GND FB
10uF 16V
R714
OPWRSB
4.7K1/16W C720
2N2 50V C717
SMD/0402 100N 16V
SMD/0402
C716
R716 NC/180P 50V
47K1/16W SMD/0402
C709 R718
51K 1/16W 5%
1UF16V
OPWRSB(DV11 ON/OFF):
Norm al: High
Stand_By: Low
DV33
FB706
220R/2000mA U702
IC AP1117DL-13 TO252-3L
2 1 3
VIN VOUT
+
C721
220uF 16V C724
1UF16V
STB_PWR_5V
FB701 120R/3000mA
1 2
FB702 120R/3000mA
1 2
+
C702
470uF 16V
+5V_SW DV33
STAND_BY:
R713 R712
Normal: Low
1K1/16W NC/1K1/16W
Stand_by: Hight
STANDBY
R725
100OHM1/16W R710
Q705 4.7K1/16W STAND_BY
BC847C
DV11
L701
15uH
D701 C715
SS3P4 C718 C713 100N 16V
R720 NC/1500P50V + 330UF 16V SMD/0402
2K2 1/10W 1%
R731
180R
R721
10.2KOHM +-1% 1/10W
Vout=0.92x (1+2K2/10K2) = 1.12V for G5657
Vout=0.8x (10K2+4K12)/10K2 = 1.12V for MP9403
DV18_DDR
R717
2
120R 1% 1/10W
+ C714
330UF 16V
10uF 16V
R719
56R 1/10W 1% Vout=1.25x (1+56/120)= 1.833V
+5V_STB
C708
100N 16V
SMD/0402
DV11(+5V_SW ON/OFF):
Norm al: High
Stand_By: Low
DV11
+5V_STB TO +5V_SW BY DV11
PWR_24V_16V
R728
43K
STANDBY:
Normal: Hight
Stand_by: Low
R733
22KOHM 1/10W
R724
STANDBY 10K 1/10W
C735
NC/100N 16V
PWR_24_16V TO +24_16V BY STANDBY (Sound)
R740
NC/0R05 4A 1/4W
+5V_STB
+5V1_DVD
R739 R738
0R05 4A 1/4W 0R05 4A 1/4W 220R/2000mA
PWR_12V
1
For +5V_DVD USE
Q703
8 1
+
7 D D 2
C725
D D
6 3
STANDBY: C733 10uF 16V
D D
5 4
100uF 10V
Normal: High S G
Stand_by: Low NC/AON4421
C706 NC/1UF16V
R701
NC/22KOHM 1/10W
R702
NC/33K 1/10W
R707
STANDBY
NC/10K1/16W Q701
NC/BC847C
C710
NC/100N 16V
SMD/0402
56
+5V_STB +5V_SW
Q704
8 1
D D
7 2
D D
R708 6 3
5 D D 4
33K 1/10W
S G
C712
+
AON4421
C705 100uF 10V
4.7UF 10V
C723 NC/4.7UF 10V
R711
22KOHM 1/10W
R705
2K7 1/16W 5% Q702
BC847C
C707
NC/4.7uF 6.3V
+24V_16V
R729
NC/0R05 4A 1/4W
8 1
D D
7 2
D D
6 3
5 D D 4
S G
Q707 AON4421
C731
10uF 25V
+ C732
100uF 25V
R730
33K 1/10W
Q706
BC847C
FB707
F701 CN4071
1.5A 125V 045101.5MRL
2 1 2
DVD_+12V
3 4
5 6
C726
100N 50V
CONN
+24V_16V DVD_+12V
U703
L78L12ABUTR
3 1
IN OUT
C728
10uF 25V
+ C734
100uF 16V
FOR DVD model POWER
10,13 +24V_16V
3,6,8 +5V_STB
3,4,6,8,9,11,12,13,14 +5V_SW
3,4,5,6,8,9,12,13,14 DV33
7 DV18_DDR
5 DV11
3,8,12,14 DV33SB
3 PWR_12V
13 PWR_24V_16V
13 STB_PWR_5V
3,4,5,6,7,8,9,10,11,12,13,14 GND
8 OPWRSB
14 INVERTER_ON_OFF
9 STAND_BY
14 BRIGHT_ADJ
8 Light_Sensor