Schematic Diagram; Main Board - Haier LET32/40T900 Service Manual

10. Schematic Diagram

10.1 Main Board

715G4589M01000004K
4) Power-1
EU MT5365 - 2 LAYERS for small size 193X225
DC POWER INPUT
CN701
1 INVERTER_ON_OFF
2 BRIGHT_ADJ
3
4
5
6
7
8
9
10
STB_PWR5V
11
12
CONN
R701
NC/10KOHM +-5% 1/8W
R/A 2.5 MM
311GW250B13ABX(XINYA)
FB706
220R/2000mA
1 2
C723 C707 C719
NC/22uF 10V 100N 50V 10uF 10V
PWR_ON
R714
4K7 1/16W 5%
SMD/0402 R742
C709
1UF16V
FB707
220R/2000mA
1 2
C732 C711 C724
100N 50V 10uF 10V
NC/22uF 10V
INVERTER_ON_OFF
Normal:High
Standby:Low
BRIGHT_ADJ STB_PWR5V
Normal:PWM or DC 3V3 Max
Standby: 0 V
+12V/5V
+5V_STB DV33SB
PWR_24V_16V
R716
R702 100R 1/16W 5% PWR_ON
2K2 1/16W 5%
R708
NC/15K 1/16W 5%
C701
NC/22U 10V PWR_ON
Q703
STANDBY BC847C
Normal:High
Standby:Low
+5V_STB
L701
U701
TPS54319RTE 1.5UH
16 10
VIN PH
1 11 C717
VIN PH
2 12 100N 50V
VIN PH
15 13
EN BOOT
6 14
VSNS PWRGD
7 3
COMP GND
8 4
RT/CLK GND
R715 9 5
SS AGND
R736
C735
10nF 50V
C720
3300pF 50V
Vout=0.827x (1+12.3K/33K) = 1.13V for DV11
+5V_SW
L702
U702
TPS54319RTE 1.5UH
16 10
VIN PH
1 11 C718
VIN PH
2 12
100N 50V
VIN PH
15 13
EN BOOT
6 14
VSNS PWRGD
7 3
COMP GND
8 4
RT/CLK GND
R731 9 5
SS AGND
R737
C733
10nF 50V
C722
3300pF 50V
Vout=0.827x (1+100.3K/33K) = 3.34V for DV33 & AV33
FB701 120R/3000mA +5V_STB
1 2
FB702 120R/3000mA
1 2 + C702 C705
470UF 10V 100N 16V
SMD/0402
DV33SB
DV11
DV11
R735
Normal:High
R705 NC/10K 1/16W 5%
1K 1/16W 5%
Stand_By:Low
SMD/0402
OPWRSB
R717
22K 1/16W 5% OPWRSB
Normal:Low
Standby:High
DV11 VCCK
C721 C713 C715
DV33
R718 22uF 10V 22uF 10V 100N 50V
300R 1/10W 1%
PWR_ON
R720
12K 1/10W 1%
R734
R721
33K 1/10W 1%
PWR_24_16V TO +24_16V BY STANDBY (Sound)
DV33 AV33
R732
DV33
0R05 1/4W
C734 C714 C716
R722 22uF 10V 22uF 10V 100N 50V
300R 1/10W 1%
C725
10uF 16V
R730
100K 1/10W 1%
R729
33K 1/10W 1%
76
+5V_STB +5V_SW
Q702
8 1
D D
7 2
D D
R704 6 3
D D
33K 1/10W 5% 5 4
S G
AON4421
C703 C708
1UF16V 10U 10V
R706 ON OFF
22KOHM 1/10W
R703 2K7 1/16W 5% 2 Q701
BC847C
SMD/0402
R707 C726
NC/10K 1/16W 5% 100N 16V
SMD/0402
+5V_STB TO +5V_SW BY DV11
PWR_24V_16V +24V_16V
R724
0R05 1/4W
Q705
1 8
S D
2 7
S D
3 6
S D
R723 4 5
G D
NC/10K 1/10W 5%
NC/AO4435
C727
C728
NC/1uF 50V NC/4.7uF 50V
R727 R725
NC/5K1 1/10W 1% NC/7K5 1/10W 5%
R728
NC/1K 1/16W 5%
R719 ON OFF
NC/22K 1/16W 5%
2 Q704
NC/BC847C
NC/1K 1/16W 5%
R709
NC/10K 1/16W 5%
C731
NC/22uF 10V
LDO linear regulator
DDRV
FB705
220R/2000mA U703
G1117T43Uf
1 2 3 2
VIN VOUT
+ C730
C729 R712 220UF 16V
22uF 10V 120R 1% 1/10W SMT
R726
27R 1/10W 1%
Vout=1.25x (1+27/120)= 1.53V
DV33SB
DV33SB 6,7,9,11,13,14
+24V_16V
+24V_16V 8,9
+12V/5V
+12V/5V 5,9
+5V_STB
+5V_STB 5,7,14
STB_PWR5V
STB_PWR5V 9
VCCK
VCCK 6
+5V_SW
+5V_SW 5,7,10,11,13,14,15
DV33
DV33 5,6,7,8,9,13,14,15,16
AV33
AV33 6,13
DDRV
DDRV 6,12
GND
GND 5,6,7,8,9,10,11,12,13,14,15,16,17
GPIO Contrl
OPWRSB
OPWRSB 6
BRIGHT_ADJ
BRIGHT_ADJ 14
INVERTER_ON_OFF
INVERTER_ON_OFF 14