Philips 48OLED806/12 Service Manual page 66

9-4-9 DCDC-SYSTEM-POWER2
+ 1 2 V t o + 5 V - S W
+12V
R1730
0R05 1/4W
+12V R1731
C1715 0.05R
10UF 16V
R1725
100K 5%
R1756 R1732
100 OHM C1712 NC/1M 1/16W
R1726
33K 5%
V o u t = 0 . 6 x ( 1 + 1 0 K / 1 K 3 3 ) = 5 . 1 V
A M B I L I G H T P R O T E C T I O N
F4400
1 2
NC/T 2A 63V
Main_12V FB4332 +12V-AMBI
U4405
1 2 1 12
IN GND
2 11
NC/120R 3A
IN OUT
3 10
NC OUT
4 9
5 GND OUT 8
C4457
SS NC
6 7
1uF 50V
EN SET
AOZ1360DIL
+3V3
R4430
10K 5%
2 S i d e d a m b i l i g h t 3 | 4 S i d e d a m b i l i g h t
U4404
F 4 4 0 0 X N A
C4457 X X
C4459 X X
C4458 X X
R4430 NA X
C4456 NA X
U4405 NA X
C4454 NA X
R4428 NA X
U1701
SY 8286ARAC
C1711
100NF 16V
2 20
IN LX
3 19
L1701
IN LX
4 6
2.2uH 8.2A
IN LX
5
IN
14
FB
12 13
MODE ILMT
10K 1%
11 15
EN BYP
17
VCC
R1733
0.05R
L N B P O W E R S U P P L Y
U p d a t e d o n 2 0 2 0 / 2 / 3
AL GND set separate
AMBI-POWER
3.3NF 50V
C758
+3V3
C4458 ZD4400 R777 NC/10K 1/16W 5%
1uF 50V R763 NC/10K 1/16W 5%
SMF12A
R4428 R769 10K 5%
47K
L I N E D R O P
LO : 13V/18V
HI : 14V/19V
+5V-SW
C1722 C1720
22UF 6.3V
1nF 50V
R1727
R4051
1K 5%
R1728
1.33K 1/16W
L750
10uH SM340DT-C
+12V
C772 C776
100NF 16V 10uF 16V
U751
C759
8 4
R766 0.22UF 50V
AGND PGND
11 3
60.4K 1%
BY PASS SW
12 5
+12V
VDD BST
10 6
0.1uF 25V
2 COMP VBOOST 7
LNB_EN
EN VOUT
1
LNB_LINEDROP
LINEDROP
9
TCAP
13V/18V_SW 14 13
22NF 25V
13V/18V EXTM
MP8124GD  Z
R760
R768 33R 5%
100K 5%
C756
1UF 16V
TUNER_LNB
WIFI-PWR-EN
WIFI-PWR-EN 14
LNB_EN
LNB_EN 14
LNB_LINEDROP
LNB_LINEDROP 14
13V/18V_SW
13V/18V_SW 14
TUNER_LNB
TUNER_LNB 6
DISEQC_OUT
DISEQC_OUT 17
DISEQ_IN_DIG
DISEQ_IN_DIG 17
+5V-STANDBY
U4250
5 1
C4297
VIN VOUT
10uF 10V 2
GND
WIFI-PWR-EN 4 3
EN OCB
APL3511ABI-TRG
R4266
R4267
4K7 5% 4K7 5%
+3V3-STANDBY
D750
1 2 VBOOST
D751
SM340DT-C
C754
C761
D752 C777
SM340DT-C 0.1uF 50V
R773
DISEQC_OUT 3K
+3V3
R761 R770 R767
C763
470K 5% 2K2 5% 4K7 5%
100NF 25V
R762
2K2 5% Q752
MMBT3904
R764
C764 Q751
MMBT3904
22NF 25V 2K2 5%
R765
470K 5%
+5V-WIFI
FB4250
1 2
120R 3A
R4250
10K 5%
E S D & S u r g e
Protect
TUNER_LNB
R772 R771
3K 3K
A d d f o r U n i c a b l e
DISEQ_IN_DIG