LG 19LV2500 Service Manual page 32

+24V_LED_driver
OPT C10001
C10022
2.2uF
10uF
100V
50V
WLED_ENABLE R10001
100
1/10W
R10004
100K
1/10W
R10005
100
ERROR_OUT
1/10W
R10002 10K OPT
OPT 1/10W
R10003
100
PWM_DIM
1/10W
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.
ALL_TN_LED_DRIVER
Copyright © 2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
TN_module_LED_DRIVER_CIRCUIT
L10001
33uH
C10002
C10005 C10021
2.2uF
0.1uF 0.1uF
50V C10010
50V 50V
1000pF
50V
OPT
close to IC100
must be modifed
R10007
4.7
1/10W
C10008
0.1uF
50V
close to IC100
C10009
1uF
2010.06.30. hwson
10V
C104 : 10uF --> 2.2nF for thermal Issue
C106 : 0.68uF --> 0.33uF
R113/R114
IN
R111 : 470 --> 390 1
Operating Freq.
2010.02.07 for PQ/19V_LED
EN
F=7.35x10^9/RT 2
COMP
3
C10003 R10008
RT
R10006 4
100pF
390 16K 1%
FLT
50V 5
1/10W
R10009
C10006
2200pF
C10007
50V
0.33uF 51K 1%
50V
OPT
AUO
R10011 R10013
47K 51K
1/10W 1/10W
1% 5%
R10010
10K
1/8W
R10014
1/8W
C10004
100pF
R10024
50V
3.9K
PWM_PULL_DOWN
D10001
PDS5100H-13
5.1
R10012
OPT
R10018
R10015 560K
12 1/10W
D
1/10W Q10001
5%
AP18T10GH
G
S
R10016
1/8W
OPT 18.5"
3K
R10017 C10011 R10019
0.1 1000pF
50V 1/10W
1%
R120 : 6.8K --> 3K
R121 : 0.03 --> 0.1 must be modifed
2010.06.30 HWSON
OUT4
15
THERMAL
OUT3
14
21
IC100 LEDGND
13
MAX16814
OUT2
12
OUT1
11
LGD CMI
R10011-*1 R10011-*2
27K 59K
1/10W 1/16W
1% 1%
AUO
LGD CMI
R10013-*1 R10013-*2
27K 59K
1/10W 1/16W
7.5K 1% 1%
ILED=1500/RSETI
Module
ILED spec R10011
AUO_18.5_HD 60mA_Typ
47Kohm
63mA_Max
AUO_21.5_FHD 60mA_Typ
47Kohm
63mA_Max
110mA_Typ
LGD_21.5_FHD 27Kohm
120mA_Max
50mA_Typ
CMI_21.5_FHD 59Kohm
56mA_Max
C10012 C10014 C10016 C10018 C10020
2.2uF 10uF 10uF 2.2uF 2.2uF
100V 100V 100V 100V 100V
OPT
21.5" CMI_21.5" CMI_18.5"
R10019-*1 R10019-*2 R10019-*3
16K 11K 13K 18K
1/10W 1/10W 1/10W
OVP=1.23x(1+R1/R2)
OVP=1.23x(1+R1/R2)=44V(18.5")
OVP=1.23x(1+R1/R2)=63.8V(21.5")
OVP=1.23x(1+R1/R2)=54.2V(CMI_21.5")
C10013 C10015 C10017 C10019
1000pF 1000pF 1000pF 1000pF
50V 50V 50V 50V
ESD protection solution
OVP setting
Module
R10013 Vs spec R10018
34V_Typ
AUO_18.5
560Kohm
51Kohm
36V_Max
AUO_21.5 52.8V_Typ
51Kohm 560Kohm
57.6V_Max
51.2V_Typ
LGD_21.5
27Kohm 560Kohm
56V_Max
43.4V_Typ
59Kohm CMI_21.5
560Kohm
47.6V_Max
33V_Typ
CMI_18.5 560Kohm
34V_Max
GP2R
TN_DRIVER
OPT
wafer modify & resister add
7
AUO_CMI 6
JP10001
R10020
0
5
1/10W
JP10004
5%
4
JP10002
3
AUO_CMI
R10021
0
2
1/10W
JP10005
5%
1
JP10003
10031HR-H06
P7700
LGD
AUO_CMI
P7701
12507WR-06L
1
2
3
R10019
4
16Kohm
5
11Kohm
6
11Kohm
7
11Kohm
18Kohm
20101023
29
LGE Internal Use Only