LG 22LN45 Series Service Manual page 28

LED DRIVER
WLED_ENABLE
12.08.11
270K+270K
->510K 2012size
VOUT
R1121
100
WLED_DIM_ADJ
R1122
100K
11.11.15
1000pF->100pF
R1123
100K
BLU_CURRENT_CTL
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.
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
+19V
11.12.02
22uF 2EA->47uF 1EA L1101
11.11.15
EAE60365101->EAE61423901 33uH
1K->100ohm
1000pF->100pF
R1127
100
C1118 C1121
47uF 4.7uF
R1129 25V
C1116 50V
100K
100pF
1%
50V
IC1100
DT1641AS
[EP]GND
EN VIN C1122
1 24
1uF
25V
R1100
510K OVP VREF
2 23
1/8W
1%
R1128 C1114 NC_1 CS
3 22
22K 1000pF
50V
1%
PGND_1 NDRV
4 21
C1111
100pF 12.08.11
50V 24K->22K
PGND_2 RSS R1134
R1132
5 20
220K 1% 30K 1%
PDIM COMP
6 19
RISET RT R1131 R1133
7 18
39K 1% 1.5K 1%
1%
R1124
LS8 LS1
1.5K
8 17
1%
R1125
LS7 LS2
24K
9 16
1%
LS6 LS3
10 15
LS5 LS4
JP1100
11 14 JP1107
JP1108
NC_2 LGND
JP1101 12 13
JP1105
12.10.16
EAN62407801->EAN62656301
JP1106
JP1102
13
12
11
10
9
8
7
6
5
4
3
2
1
05002HR-H12J05
P1100
11.11.29
Diode change canceled(111202)
EAH61112701->EAH61533501
D1103
BR210
100V
11.11.29
0DSKE00048A Diode DEL
12.01.10
D
Main AOD478
Q1103 Sub AP18T10GH
R1136 0 AOD478
G
S
R1137
0.1
R1101
1% 11.10.27 MULTI_ON
4.7K
1W
Parallel 0ohm DEL
C1123
4700pF
50V
C1125
R1135
1.5K 1% 0.047uF
25V
JP1104
JP1103
VOUT
OPT OPT
C1124 C1129 C1130
C1127 C1128
1uF 1uF
33uF 1uF 1uF
100V 100V 100V 100V 100V
12.03.08
EAE61103401 2.2uF MLCC 1ea(3225)
->EAE61381601 1uF MLCC 2ea(3216)
+19V
C1113 C1115 C1119
C1112
R1107 R1109
47uF 10uF 0.1uF 100pF
220K 30K
25V 25V 50V
OPT 50V 1/16W 1/16W
IC1101
[EP]
TPS40210DGQR
+3.3V_ST
RC VDD
1 10
R1105 C1126
10K 0.22uF SS BP
2 9
1/16W
16V
DIS/EN GDRV
3 8
C
B Q1102
COMP ISNS
MMBT3904(NXP)
4 7
E
R1102
FB GND
10K
5 6
C1117 C1120
47pF C1131
2200pF
50V 50V 1uF
10V
R1108
R1104 51K
470K 1/16W
1/16W
12.05.17 To improve audible noise
C1103 2200pF->47pF
C1105 47pF->OPT
12.07.03 To improve backlight blinking
C1103 47pF->2200pF
C1105 47pF->Apply
R1103 18K->470K
+24V_BLU
JP1109
ERROR_OUT
JP1110
WLED_ENABLE
JP1111
WLED_DIM_ADJ
12.05.17
C1110 EAE62721801 33uF,
C1111 0CH8106J691 10uF
+24V_BLU
-> EAE60171701 68uF 2EA
L1100 D1101
10uH
BR210
100V
OPT
C1137
C1135 C1136
C1139
C1138
68uF 68uF 1uF
1uF 1uF
35V 35V 50V
50V 50V
D
R1113 Q1101
3.3
G AOD478
1/16W
S
R1111
1K
1/16W
C1132 C1134
0.1uF 100pF
16V 50V
P1101
SM14B-SRSS-TB
JP1088
24V
1
24V
2
24V
3
24V
4
24V
5
GND
6
GND
7
GND
8
GND
9
GND
10
OPT
R1110
100
ERROR_OUT
11
1/16W
INV_ON
12
NC
13
PWN_DIM
14
C1133
OPT
1uF 15
10V
GND
EAX65077401
NC4_S7LRM
2012.08.25
11 12
LED DRIVER
LGE Internal Use Only