Philips 221TE4LB/57 Service Manual page 19

6. Schematic
6.1 Scaler Board (715G4786M01000005K, 715G5440M01000005K)
Remark: Parts position can be searched by using FIND function in PDF.
Power 1
BL_ON/OFF_PRE FB705 1 2
120R/6000mA
L0805
100N 50V
CN701
1 BL_ON/OFF_PRE
2 BRT_CTRL_PRE BRT_CTRL_PRE
3 12V_PRE
4 12V_PRE
5 12V_PRE
6
7
8 24V_PRE FB740
9 24V_PRE 0R05 OHM
10 PS_ON_PRE
11 5VSB_PRE
12 5VSB_PRE 24V_PRE
13 5VSB_PRE
PS_ON_PRE
NC/CONN
5VSB_PRE
CN704
1 5VSB_PRE
2 5VSB_PRE
3 5VSB_PRE
4 PS_ON_PRE
5 24V_PRE
6 24V_PRE
7
8
9
10 12V_PRE
11 12V_PRE
12 BRT_CTRL_PRE
13 BL_ON/OFF_PRE
CONN
R723 0R05 1/10W
AUX_POWER_ON#
R724
5V
FB718 120R/3000mA
1 2
L0603
+ C734 C735
470UF 16V
100N 16V
C0402
3.3V
3.3V
5V
R736 NC/0R05 1/10W
R702 R737
4.7K 1/10W R703 NC/4.7K 1/10W
1K 1/10W NC/4.7K 1/10W 4.7K 1/10W
R701 R704
Q706 10U 16V
C701 Q701 PMBS3904 C767 C768 C0805
PMBS3904 R738 22UF 6.3V
1K 1/10W
FB708 1 2
120R/6000mA
L0805
FB709 1 2
12V
120R/6000mA
C713 L0805 C714 C716
FB741 100N 50V 100N 50V 330UF 35V
+
0 OHM
C0603 C0603
10x9mm
FB710 1 2
24V
120R/6000mA
C719 L0805 C720 C721
100N 50V 100N 50V 330UF 35V
+
C0603 C0603
10x9mm
FB712 1 2 R715
NC/120R/6000mA R0402
L0805
FB714
5VSB
1 2
120R/6000mA
C726 FB715 L0805 C728
100N 50V C727 C729 100N 16V
+
1 2 470UF 16V 1N 50V
C0603 120R/6000mA C0402
L0805 C0402
10K 1/10W
C733
L701
NC
2.2uH 20mOHM 8A
C0603 U706 G5684F11U
L75X70-SMD
4 5
IN LX
3 6
EN LX
2 7
GND FREQ
1 8 D701
COMP FB
9
Thermal Pad
SK54B R725
C736 56A379-92 SMB C737 C738 3.6K 1%
10U 16V R726 R727 100N 50V 22UF 6.3V
C0805 27K 1/10W 1% 120K 1/10W 1% C0603 C0805
R0603 R0603
Fs = 600K Hz
C744 C745
NC 1nF R728
C0603 C0603 9.1KOHM +-1% 1/10W
Vout = 0.8( 1+ Rtop/Rbot)
Vout=0.8x (1+3.6K/9.1K) = 1.164V for G5684
BL_ON/OFF
R802 R739
1K 1/10W
4.7K 1/10W
5V 3.3V
R706
R707
4.7K 1/10W
NC/4.7K 1/10W R708
4.7K 1/10W
10K 1/10W NC/4.7K 1/10W
R710 R711
C707
470UF 16V
BRT_CTRL
C710 Q702
NC/10uF 6.3V PMBS3904 R712
1K 1/10W
5VSB
R791
NC/4.7K 1/10W
R714
NC/4.7K 1/10W NC/4.7K 1/10W
R716
NC/33R 1/16W 5%
Q703
PS_ON
NC/PMBS3904
R717
NC/4.7K 1/10W
FB724
1 2
BEAD
FB728 NC/120R/3000mA HP_VCC1V
L0603
2.0A--->DTV
1 2
FB719 NC/120R/3000mA 1.08V-->Typ
L0603
1 2
C739 C740
NC 22UF 6.3V
C0603 C0805
3.3V
0.5A -->DTV
FB729
120R/3000mA
U703
L0603
5V TO263 TO252
U702
G1084T43Uf
G1084-33TU3Uf TO252GOI C0603 C0805
3 TO263GOI 2 3 2
VIN VOUT VIN VOUT
C702
+
470UF 16V
R709
100R
R0603
+
R713
22 OHM +-1% 1/10W
R0603
U704
5V 3 2 C0603 C0805 1
VIN VOUT
120R/3000mA
L0603
5VSB
U705
G1084-33TU3Uf
3 TO263GOI 2
VIN VOUT
3.3V,
C724
+
3.3VSB,
470UF 16V
2.5V,
1.5V
5VSB
NC/200K 1/10W
SYS_PW
R719
Norm al: High
Stand_By:
R718 0.47uF 16V
Low 22K 1/10W C751
1K 1/10W
R721
R720 100K 1/10W 5%
SXL_PWRON
Q705
10K 1/10W
PMBS3904
R722
GND
System power
Meridian 4 19
HP_VDDM HP_VCC_15
FB706
1 2
120R/3000mA
L0603
C0603
0.21A
FB711 HP_VCC_25
2
3VSB
FB713
1 2
120R/3000mA
L0603
C765
+
470UF 16V
AO4449 -7A/-30V
5V
Q704
1 8
S D
2 7
S D
3 6
S D
4 5
G D
+ C731
100UF 16V
C732
NC/4.7uF K 25V