Haier LE32B7600 Service Manual page 60

MAIN POWER
PS_ON
BL_DIM
CN701
CONN
11 12 BL_ON
9 10
7 8
5 6
3 4
+5VSB
1 2
+12V_AUD +12V R773
NC/0R05 1/10W
R774
0R05 1/10W
+12V_AUD +12V
39" R773 NC
50" R774 NC
C713 C711
C704
100PF 50V 0.1uF 50V 22UF 16V
CORE POWER 1.2V
+5VSB
U705
VCCK 11
E-PAD
1 10
R739
EN1 LX
2 9
0R05 1/16W
AGND PGND
3 8
FB1 IN1
4 7
L702
AGND OUT2
5 6
+5VSB
EN2 IN2
2.2uH
C725 M5723B-33F61U C715
R750 C719 1UF 10V
4.7UF 10% 10V
NC/100N 16V 10UF 6.3V 20%
14.3K 1%
R732
Vo=0.6x(1+R1/R2)
15K 1%
SOT223 1A/3.3V
DEMOD POWER
5V_SW
U702 FB701 NC/120R
3 2 1
VI VO
C721 FB702 120R
C726 C720
10UF 10V 1
1UF 10V 100NF 16V
AP2114H-3.3TRG1
FB703 120R
1
DM1V2
DM3V3 U703
1 5
IN OUT
2
C735
GND
C723
3 4
NC/1UF 10V NC/10UF 6.3V 20%
SHDN SET
R740
NC/G9141T11U NC/1.5K +-1% 1/10W
R1
R741
NC/10K +-1% 1/16W
R2
VOUT =
1.0(1+1.5K/10K)=1.15V
5V_SW
R722 +3V3SB
R735
4K7 1/16W 5%
BL_ON R701 BL_ON_OFF
100R 1/16W 5% Q705
C702 MMBT3904 1K 1/16W 5%
R726 BL_ON/OFF
1nF 50V R743 4K7 1/16W 5%
10K
BL_DIM BRIGHT_ADJ
BRIGHT_ADJ 6
C701
100PF 50V
+3V3SB +5VSB
C717 C724
2.2UF 16V
5V Power for Standby
DM3V3
2
DVDD3V3
2
R714
3V3T
2
C746 C747
10UF 6.3V 20% 100NF 16V
REV:C
+5VSB
+3V3SB
R706
R707
1K 1/16W 5%
PS_ON
B ack L ig h t On / Off Q701
H I => POW ER _OF F MMBT3904 4K7 1/16W 5%
L O => POW ER _ON R709
4K7 1/16W 5%
BL_ON/OFF 6
Q706
MMBT3904
+5VSB
R704
47K 1/16W 5%
R705
7K5 1/16W 5%
PS_ON R708 Q703
4K7 1/16W 5% MMBT3904
C712
1UF 10V
DRAM Power 1.5V
5V_SW
U706
1 5
VIN LX
2
GND
3 4
EN VFB
R720
G5695T11U
C745 0R05 1/16W R745
2.2UF 16V
R2
R721
100K1/16W Vout = 0.6x(1+R1/R2)=1.5V
REV:C
C703 470pF 50V R703 1K 1/16W 5%
R737 100K 1%
R1 Vout= 0.6(1+R1/R2)
R2
C740
U701
1 6
R725 13.3K 1%
FB BS
L701
100N 50V
4.7uH
2 5
390K 1% 3.3A
EN LX
+12V
0R051/8W C739
R713 22UF 10V
3 4
GND IN
R738 C709
100K 1% 10N 50V SY8104ADC
C705
22UF 16V
C738
10uF 16V
REV:B
60
+3V3SB
R742
PWR_ON_1
R166
PWR_ON_1
0R05 OHM
4K7 1/16W 5%
PWR_ON
R753 R175
PWR_ON 6
4K7 1/16W 5% NC/0R05 OHM
H => POW ER _ON
L => POW ER _OF F
5V_SW
Q702 GND2
AO3401A
1
C706 C708
10UF 6.3V 20%
0.1uF 50V GND
DDRV
L706
2.2uH
R1 R744
20.5K 1% C743 C744
1UF 10V
22UF 6.3V
10K +-1% 1/16W
= 0.6x(1+100/13.3)=5.11V
FB704
+5VSB
1 2
300R
C734
22UF 10V
6
GND3
1
GND