Philips 22PFT5403/56 Service Manual page 37

9-2-7 System Power
MAIN POWER
BL_DIM
11 BL_DIM
BL_ON
11 BL_ON
PS_ON
PS_ON
+12V 1 2
11 +12V +12V_MB 7,8
FB704 120R 6A
1 2
FB706 120R 6A
1 2
FB707 120R 6A
12V_MB / 1.28A
12V_AUD / 2A
+12V_MB
U702
SY8234FCC
C723
C778
10UF 25V
8 1
1uF 16V
IN LX C743
7 2
SS BS
6 3
C783
SGND EN
0.1uF
5 4
R751
ZD701
FB NC
PDZ9.1B
NC/40.2K 1/16W 1%
R749
4K7 1/16W 5%
R2 R1
R763
R756
0R05 1/16W
10K 1/10W 1%
C753 100N 50V
U705
6 1
5 VBST GND 2
EN SW
4 3
VFB VIN
+5VSB
TPS563201DDCR
C780
R755
10UF 25V
100K 1/16W 5%
R757
C767
1uF 10V
NC 20K 1/16W
Vout= 0.768x(1+4.3/10)= 1.098V
+5VSB
R709
0.47 OHM
R710
+3.3V_Standby
0.75R 1%
U701
LD1117AG33AA3AR
3 2
VI VO
C787
C732
22uF 6.3V
C731 100NF 16V
C730
10UF 6.3V 20%
1uF 10V
2014-03-06 Modified. +3.3V_Standby
R743 Change from 8.2K to 10K.
For DQE Test Spec.
+3.3V_Standby
R722
4K7 1/16W 5%
R701
R737
BL_ON 1K 1/16W 5%
Q705
MMBT3904
100R 1/16W 5%
R743 BL_ON/OFF
C702 R726
10K 1% 1/16W
4K7 1/16W 5%
1NF
BL_ON R703 BL_ON/OFF
NC 100R 1/16W 5%
BL_DIM R702 BRI_ADJ
100R 1/16W 5%
C701
100PF 50V
+5VSB
L703
3.3A
3.3UH
C746 C747
0.1uF
R747 22uF 6.3V 22uF 6.3V
100K 1%
C742
100pF 50V
R748
R2 13.3K 1% 1/16W
C772
NC 22PF 50V
R761
4.3K 0.5% 1/16W
+1.1V_VDDC
L702
2.2uH
+5VSB C781 C726
22UF 20% 6.3V 22UF 20% 6.3V
C776
10UF 25V
3V3_Aud
FB708
1 2
120R 6A
C786 C785
22uF 6.3V 22uF 6.3V
Back L ig ht On / Off
HI => POWER _OF F
L O => POWER _ON
PS_ON
R712
4K7 1/16W 5%
+5VSB
2014-03-17 Modified.
R706 Change from 4.7K to 3K.
R708 Change from 1K to 4.7K.
For XM DQE(SVT 40Inchs)
R704
47K 1/16W 5%
R705
7K5 1/16W 5%
PS_ON R708 4K7 1/16W 5%
Q703
C712 MMBT3904
1UF 10V
DRAM Power 1.5V
5V_SW
U706
1
2 VIN
GND
3
EN
R720
G5695T11U
C745 0R05 1/16W
2.2UF 16V
R721
Vout = 0.6x(1+R1/R2)=1.5V
100K
TUNER POWER +3V3 3V3T / 200mA
U101
5V_SW
LD1117AG33AA3AR
3 2
VI VO
C120
10UF 10V
Audio Power 3.3V
U707
5V_SW
LD1117AG33AA3AR
3 2
VI VO
C713
10UF 10V
+5VSB
R714
10K 1/16W 5%
PWR-ON/OFF
5V_SW / 790mA
5V_SW
Q702
AO3401A
C706 C708
100NF 16V
0.1uF
+1.5V_DDR
L706
5
LX
2.2uH
4
VFB
R1 R744
33K 1/16W 1% C777 C744
R745 22UF 6.3V 1UF 10V
R2 22K 1%
3V3T
C122 C121
C784
22uF 6.3V
100NF 16V 10UF 6.3V 20%
3V3_Aud
C714 C715
100NF 16V 10UF 6.3V 20%
BL_ON/OFF
VBL_CTRL 3
BRI_ADJ
BRI_ADJ 3
PWR-ON/OFF
PWR-ON/OFF 3