Read LG 55LEX8-ZA (CHASSIS:LD03S) Service Manual online
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
22uF
10V
10V
C902
1/8W
75K
1%
R902
24K 1%
R906
MP2212DN
IC901
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
0 . 1 u F
50V
50V
C913
22K
1%
R905
10K
R910
+3.3V
0
R904
1/10W
10
1%
R903
100pF
50V
C906
+1.2V
1uF
10V
C910
0.1uF
16V
C918
10uF
25V
C907
0 . 1 u F
50V
C915
22K
R911
OPT
MP8670DN-LF-Z
IC900
3
VCC
2
BST
4
BG
1
SW
5
GND
6
FB
7
EN/SYNC
8
IN
VLCD_POWER
(+12V)
10uF
25V
C912
0 . 1 u F
50V
50V
C908
3 . 3 u F
50V
50V
C911
1uF
50V
50V
C903
22
R900
120K
1%
R909
3 . 3 u F
50V
50V
C914
1.6K
1%
R907
+24V
6.8K
1%
R908
1uF
25V
25V
C901
120-ohm
L901
3 . 3 u F
50V
50V
C920
100K
R912
OPT
22uF
10V
C916
22uF
10V
C917
LQH88PN3R6N38K
3.6uH
L904
0
R913
POWER_CTRL_24V
1uF
10V
10V
C11618
OPT
LQH88PN3R6N38K
3.6uH
L902
LQH88PN3R6N38K
3.6uH
L903
0
R901
SI4124DY-T1-GE3(VISHAY)
Q900
3
S_3
2
S_2
4
G
1
S_1
5
D_1
6
D_2
7
D_3
8
D_4
Placed on SMD-TOP
R1
V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
C l o s e t o I C
R e p l a c e d P a r t
R2
+ 3 . 3 V t o + 1 . 2 V
C IN
max 1500 mA
R1
Placed on SMD-TOP
24V->12V
R2
13
2 0 0 9 . 1 2 . 2 8
DP POWER BLOCK
9
ALEF M240Hz(TM480Hz) Sub Board
P l a c e t h e m a s c l o s e a s p o s s i b l e
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