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LG 28LB474A Service Manual page 31

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TBD
44A/45A/450A
28_Heesung
24_INNOLUX
R611-*8
R611-*7
27K
22K
1%
1%
24_INNOLUX
28_Heesung
R612-*7
R612-*8
1.6K
1K
1%
5%
THE
SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE
SYMBOL MARK OF THE SCHEMETIC.
LED DRIVER
Copyright © 2014 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LED_Driver_EN_3.3V
LED_Driver_EN_5V
R628
R629
0
0
R602
READY
3K
R601
10K
C
R603
10K
B
Q601
INV_ON
MMBT3904(NXP)
E
VOUT
DRIVER
R606
560K
1%
DRIVER_Only 28inch
R607-*1
24K
1%
DRIVER
R608
100
PWM_DIM
READY
READY
C603
50V
R609
100K
100pF
READY
R610
100K
BLU_CURRENT_CTL
FHD_22_HEESUNG
18.5_BOE
18.5_CMI
FHD_24
28_BOE
18.5_AUO
R611-*3
R611-*2
R611-*5
R611-*1
R611-*6
R611-*4
1.8K
2.7K
0
18K
2.7K
2.4K
1%
1%
1%
18.5_CMI
FHD_24
FHD_22_HEESUNG
18.5_BOE
18.5_AUO
R612-*1
28_BOE
R612-*3
R612-*2
R612-*5
R612-*4
39K
39K
R612-*6
39K
36K
33K
1K
1%
1%
5%
R632
INNOLUX
NOT_Innolux
0
LED Driver NC Pin.5
R630 0
R625 0
R631
INNOLUX
0
LED Driver NC Pin.2
R634
R626 0
R633
INNOLUX
INNOLUX
0
0
R635 0
NOT_Innolux
+19V
BLU_ON
BOOST
R627
0
R604
DRIVER
DRIVER
1K
C606
C607
10uF
10uF
DRIVER
DRIVER
1%
R605
25V
25V
C601
100K
1000pF
1%
50V
DRIVER
IC601
DT1641AS
[EP]GND
EN
VIN
1
24
OVP
VREF
2
23
DRIVER
DRIVER_Except 28inch
R607
C602
NC_1
CS
1000pF
27K
3
22
50V
1%
PGND_1
NDRV
4
21
PGND_2
RSS
5
20
PDIM
COMP
6
19
RISET
RT
7
18
LS8
LS1
HD_24/FHD_22
8
17
R611
680
LS7
LS2
HD_24/FHD_22
9
16
R612
20K
LS6
LS3
10
15
LS5
LS4
11
14
NC_2
LGND
12
13
JP601
JP603
JP605
JP602
JP604
JP606
2CH/4CH
R621 0
2CH/4CH
R622 0
R623 0 2CH/4CH
R624
0
2CH/4CH
DRIVER
DRIVER
D602
L601
33UH
BR210
100V
EMI Improve
0-> 3.3ohm(12.12.25)
3.3-> 5.6ohm(12.12.25)
D
DRIVER
DRIVER
Q602
R620
AOD478
5.6
G
S
DRIVER
C614
1uF
25V
R618
0.1
1%
DRIVER
DRIVER
DRIVER
R617
R616
240K 1%
10K 1%
DRIVER
C605
4700pF
DRIVER
DRIVER
50V
DRIVER
R613
R614
R615
39K 1%
1.5K 1%
1.5K 1%
DRIVER
C604
0.047uF
25V
VOUT
NON_MLCC
NON_MLCC
NON_MLCC
C609
C610
E637
68uF
68uF
1M
JP609
35V
35V
1/8W
NON_MLCC
NON_MLCC
NON_MLCC
JP607
C600
C608
R638
68uF
68uF
1M
1/8W
35V
35V
JP608
MLCC_IN
MLCC_IN
MLCC_IN
R638-*1
C609-*1
C610-*1
0
10uF
10uF
1/8W
100V
100V
44A/45A/450A
LED_Driver
MLCC_IN
MLCC_IN
MLCC_IN
READY
C611
C612
C613
C615
10uF
1uF
1uF
1uF
100V
100V
100V
100V
2013/08/21
6
8
LGE Internal Use Only

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