Haier LE24D33800 Service Manual page 59

11) System Power
C701
1N 50V
C702
1N 50V
1 INVERTER_ON_OFF
R701 100OHM
2 BRIGHT_ADJ
R702 100OHM
3
4
R750 NC/0R05OHM1/8W
5
6
7
8
9
10 PS_ON
11
12
13
CN701
CONN
DC
POWER
INPUT
STANDBY POWER 3V3SB AP1117E33L-13-77 SOT223 1A/3.3V
U701
AP1117E33L-13-77
+5VSB
3 2
VIN VOUT
C715
10uF 10V
VER.B 9/29
+5VSB TO +3V3SB
Buck Converter 5A
+5VSB
C724 C736
R731
10uF 10V 100N16V
10 OHM 1/10W
C742
100N16V
POW ER 2V5 G1117-25T63Uf SOT223 1A/2.5V
5V_SW
U703
AZ1117H-ADJ-E1
3 2
VI VO
C723
10uF 10V
R738
150R 1%
5V_SW TO 2V5
MAIN POWER
+12V
C704 C705
NC/100P 50V NC/0.1uF 50V
+24V
22"/24" Input 16V for Amp.
C710 C711
100P 50V 0.1uF 50V
+5VSB
C713 C714
100P 50V 0.1uF 50V
POW ER DVDD3V3
+3V3SB
+3V3SB
C717
C719 10uF 10V
0.1uF 50V
Close to DC-DC
U705
G5676F11U
9
E-Pad
8 1
PGND NC
7 2
L701 2.2uH
PVIN LX
6 3
SVIN NC
5 4
PS_ON
FB EN
R730
4K7 1/10W 5% C739 C734
C741 C727 22uF 10V NC/0.1uF 50V
390pF 50V NC/1UF 10% 16V
R729
11.5K 1% 1/10W
R732
10K2 +-1% 1/10W
Vout = 0.6x(11.5+10)/10 = 1.29V
2V5
2V5
C722 C726
R739
100N16V 10uF 10V
150R 1%
+5VSB Q702
1 8
S D
2 7
S D
3 6
S D
4 5
G D
C706
10uF 10V AO4449 -7A/-30V
R703 R704 R705
NC 47K 7.5K 1/16W
VCCK
R708
VCCK 1K
Q703
Normal H PMBT3904
C712
Standby L
1UF 10% 16V
+5VSB TO +5V_SW BY VCCK
AP1117E33L-13-77 SOT223 1A/3.3V
U702
DVDD3V3
5V_SW
AP1117E33L-13-77
3 2 DVDD3V3
VIN VOUT
C718
C720
10uF 10V
C716 10uF 10V
VER.B 9/29 0.1uF 50V
+5V_SW TO DVDD3V3
Core Power 1.27V
VCCK
+ C725 C738
C735
NC/330UF 6.3V 10uF 10V NC/0.1uF 50V
System Power
Vout = 0.6x(R1+R2)/R2
59
5V_SW
C708
0.1uF 50V
Back Light Dimming PWM
HI = > DARK
LO = > LIGHT
+3V3SB
BL_DIMMING
Back Light On / Off
HI = > POWER_OFF
LO = > POWER_ON
BL_ON/OFF
+5VSB +3V3SB
R706 R707
1K 1/16W 5% NC/1K 1/16W 5%
PS_ON
R709
4.7K 1/16W
Q701
PMBT3904
OPWRSB
OPWRSB 5
BL_DIMMING
BL_DIMMING 5,8
BL_ON/OFF
BL_ON/OFF 5
GND 3,4,5,6,7,8,9,10,12
5V_SW
R712
1K
R717
R716 0R05 1/10W
NC BRIGHT_ADJ
C721
R718 Q704
NC/10uF 10V
4.7K 1/16W PMBT3904
5V_SW
+3V3SB
R722
R737 4.7K 1/16W
1K
INVERTER_ON_OFF
R726
Q705
PMBT3904 R743
4.7K 1/16W NC
+5VSB
R748
10K
R749
OPWRSB
4.7K 1/16W
Q706 Main po wer On /Off con tro l
PMBT3904 LO = > POWER_OFF
HI = > POWER_ON