Read LG 72LZ9900-CA (CHASSIS:LC12N) 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.
11/04/06
Repeater power / Local dimming
MDS61887710
M7
GASKET_9.5T
MDS62110204
M2
GASKET_5.5T
MDS61887710
M8
GASKET_9.5T
MDS62110204
M1
GASKET_5.5T
MDS62110204
M3
GASKET_5.5T
MDS62110204
M4
GASKET_5.5T
MDS61887710
M5
GASKET_9.5T
MDS61887710
M6
GASKET_9.5T
L/DIM0_VS
L/DIM1_MOSI
P1101
12507WR-08L
1
2
3
4
5
6
7
8
9
L/DIM1_SCLK
L/DIM0_MOSI
L/DIM0_SCLK
R1107
47K
C1101
10uF
25V
10uF
25V
C1105
2200pF
C1103
0.1uF
16V
0.1uF
16V
IC1101
AOZ1073AIL-3
EAN60660502
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
+3.3V_Repeater
C1107
22uF
10V
22uF
10V
C1104
0.1uF
16V
OPT
C1102
10uF
25V
10uF
25V
R1110
10K
1%
R1105
24.9K
C1106
100pF
50V
OPT
L1102
3.6uH
R1106
18K
R1109
4.3K
1%
C1108
22uF
10V
22uF
10V
R1108
27K
1%
L1101
CIS21J121
VLCD_POWER
(+12V)
R1102
0
R1101
0
L/DIM0_SCLK_S
L/DIM0_MOSI_S
R1104
0
R1103
0
R1111
0
R1112
0
SMD GASKET 9.5T
SMD GASKET 5.5T
SMD GASKET
To LED Driver
R1
Distribution, 75MHz condition
MAX 1.96A
R2
Vout=0.8*(1+R1/R2)
+3.3V_LVDS Repeater
LEFT L/D
Right L/D
11
11
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