27LS5400, 27LS540T (CHASSIS:LD02M) - LG TV Service Manual (repair manual). Page 32

THERMAL

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.

LED Driver

R1131

39K 1%

C1123

4700pF

50V

R1129

100K

1%

VOUT

WLED_ENABLE

L1101

33uH

R1133

1.5K 1%

C1114
1000pF
50V

+19V

WLED_DIM_ADJ

R1134

30K 1%

R1132

220K 1%

R1125

24K

1%

R1124

1.5K

1%

R1128

22K

1%

R1126
510K

1/16W

1%

OPT

R1122

100K

R1123
100K

1%

C1125

0.047uF

25V

C1121
4.7uF
50V

IC1100

DT1641S

3

NC_1

2

OVP

4

PGND_1

1

EN

6

PDIM

5

PGND_2

7

RISET

8

LS8

9

LS7

10

LS6

11

LS5

12

NC_2

13

LGND

14

LS4

15

LS3

16

LS2

17

LS1

18

RT

19

COMP

20

RSS

21

NDRV

22

CS

23

VREF

24

VIN

25

[EP]GND

BLU_CURRENT_CTL

R1137

0.1

1W

1%

C1122
1uF
25V

JP1103

JP1104

JP1102

JP1101

JP1100

VOUT

R1136

0

R1135

1.5K 1%

P1101

12507WR-06L

1

2

3

4

5

6

7

P1103

12507WR-06L

1

2

3

4

5

6

7

R1127
100

R1121
100

C1111

100pF

50V

C1116
100pF
50V

D1103

100V

BR210

C1118
47uF
25V

Q1103
AOD478

S

D

G

C1124
33uF
100V

C1127

1uF
100V

C1128

1uF
100V

C1129

1uF

100V

OPT

C1130

1uF

100V

OPT

R1138
510K

1/8W

1%

9     11

LED DRIVER

11.10.27
Parallel 0ohm DEL

11.11.15
1K->100ohm
1000pF->100pF

11.11.15
1K->100ohm
1000pF->100pF

11.11.29
Diode change canceled(111202)
EAH61112701->EAH61533501

11.11.29
0DSKE00048A Diode DEL

11.12.02
22uF 2EA->47uF 1EA
EAE60365101->EAE61423901

21.5" LGD AH-IPS  LM215WF3-SLE1 
27" LGD 3D IPS LM270WF6-SLZ1 

12.01.10
Main AOD478
Sub AP18T10GH

12.02.04
EAG62611101(FFC wafer) DELETION

Harness Wafer(L)

Harness Wafer(TOP)

12.03.08
EAE61103401 2.2uF MLCC 1ea(3225)
->EAE61381601 1uF MLCC 2ea(3216)

DMxx52/Mxx52

Mxx32

12.05.15 Derating improve
510K 1005size->OPT
510K 2012size->ADD

EAX64559005

2012.05.23