LG 28LN45 Series Service Manual page 27

R801
100K 11.10.27
R803
0.1uF
36K
+19V
JK800 JP801
KJA-DC-1-0032
4
11.10.27
1000Hr->2000Hr
2
C820 111129
111129 47uF DEL
47uF
Discharging R DEL 25V
1
JP800 (0RJ2201J674)
12.03.08
EAE42868301(3225)->
EAE61081701(3216)
11.11.07
6604->6601
POWER_ON/OFF1
12.03.08
EAE42868301(3225)->
EAE61081701(3216)
12.03.08
EAE42868301(3225)->
EAE61081701(3216)
+3.3V_Normal
R806
10K
OPT R807
1K
OLP
OPT
Not used :
only for small(ready)
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
C818
50V
C807
0.1uF
16V IC809
[EP]GND MP1584EN
L802 10uH
BST SW
8 1
VIN EN C840
C812
7 2
10uF
47uF
25V 10V
11.11.14
C803 FREQ COMP
6 3 0CE476WH6DC(1000hr)->
10uF
EAE61423901(2000hr)
25V 11.10.27
R851
47K 1%
GND FB
5 4
2K 1%
R855
R819
0
C869
11.11.28
220pF
OPT 1.2K->2K
50V R838
C808
15K
150pF
1%
50V
R816
68K
19V TO 5V DCDC CONVERTER
R800
MULTI_ON
100K 1%
R802
4.7K 11.11.29
0.047uF->0.033uF
OPT 150K->180K
C811
0.47uF IC800
16V
MP1472GJ-C452-Z
11.11.07
OPT
C835
0->47
C868 R884
0.033uF
0.01uF R888 180K L803
50V
50V 47 BST SS
8 1
IN EN
7 2
11.11.14
C804
C810
0CE476WH6DC(1000hr)->
SW COMP
10uF 0.1uF
EAE61423901(2000hr)
6 3
25V 50V
R891
GND FB
47K
5 4
11.11.07
0->47K
C832
4700pF
11.11.14
50V
C845
2200pF->4700pF
330pF
10K->8.2K
50V
150pF->330pF
R818
8.2K
19V TO 12V DCDC CONVERTER
OPT
MULTI_ON R804
100K 1%
R805 11.11.29
POWER_ON/OFF1 0.047uF->0.033uF
4.7K
150K->180K
IC802
C813
MP1472GJ-C452-Z
11.11.07
0.47uF
0->47 C838
C825 R885
16V
0.033uF
0.01uF R869 180K
OPT
50V
50V 47 BST SS
8 1
IN EN
7 2
11.11.14
C800
C806 0CE476WH6DC(1000hr)->
SW COMP
10uF 0.1uF EAE61423901(2000hr)
6 3
25V 50V
R892
GND FB
47K
5 4
11.11.07
0->47K
C833
4700pF
11.11.14 50V
C847
2200pF->4700pF
330pF
10K->8.2K 50V
150pF->330pF R820
8.2K
OPT
19V TO 12V DCDC CONVERTER
R808
MULTI_ON
100K 1%
R813
POWER_ON/OFF1 4.7K
IC804
C822 MP1472GJ-C452-Z
0.47uF
C844
C829 R829
16V
0.033uF
0.01uF
OPT R823 180K
50V 47 BST SS 50V
8 1
IN EN
7 2
C815
C821
10uF SW COMP
0.1uF
6 3
25V 50V
R837
GND FB
47K
5 4
C831
4700pF
50V
C848
330pF
50V
R828
8.2K
AO3407A Vgs : 10.8V(24V input)
AMP_VCC Control
AO3407A Vgs : 10.36V(19V input)
OPT
OPT
C801
C809 C839
R880
10uF 0.1uF
2.2uF
10K
25V 50V
Q807
50V
AO3407A
12.03.08 S
EAE42868301(3225)->
G
EAE61081701(3216)
R821
12K
D
L807
CPI2520NHL3R3ME 2520
C
R810
MULTI_ON
C834
10K B Q806
0.01uF
MMBT3904(NXP)
50V
E
R836
10K
111116
EBK61011501(Diode)
->EBK38029201(Rohm)
+3.3V_ST
->EBK61913601(NXP) 3.3V drive
+3.3V_ST
OPT
R875 C890
22K 4.7uF
10V
111116
10K->22K
C814 POWER_ON/OFF1
1K->100
0.1uF
VOLTAGE HIGHER
50V 11.11.05 R874
100
C
R870
100K B Q804
POWER_ON/OFF1
MMBT3904(NXP)
OPT
E
R873
10K
11.12.01
LDO change
EAN56716601 (5A)
->EAN54428101 (1A)
11.12.20
LDO change
EAN54428101 (1A) adj
->EAN54428601
+5V_USB +5V_Normal
IC803
12.03.08 R902
AP1117E33G-13
EAE61081701(25V)-> 0
10uH
EAE52158501(10V)
IN
3
2
OPT
C852
C858 OUT
C861
47uF
10uF
0.1uF
25V C836 C837
10V
50V
10uF 0.1uF
10V
50V
R834
33K 1%
12K 1%
R845
R824
0
R825
10K
1%
+12V_PANEL_SOURCE
12.03.08
+12V_Normal
L805 EAE61081701(25V)->
EAE52158501(10V)
10uH
R905
OPT
C859 C863 0
C853
47uF 10uF 0.1uF
25V 10V 50V
R835
120K 1%
0 5%
R846
R826
0
R827
10K
1%
+12V_Normal
12.08.07
10uH->22uH
12.08.07
L800 EAE52158501(10V)
22uH ->EAE61081701(25V)
OPT
C849 C851 C854
47uF 10uF 0.1uF
25V
25V 50V
R852
120K 1%
33 1%
R853
R847
0
120915
R850 MP1584->MP1472
10K
1%
AMP_VCC 121118
+19V_SCART DEL
+19V_AMP_VCC
3.3uH
C860 C865
10uF 0.01uF
25V 50V
+3.3V_AMP
+3.3V_Normal
+2.5V_Normal
S
C895
G
0.1uF
50V
IC810
PMV48XP
D
AP2114H-2.5TRG1
Q805
C891
VIN VOUT
GND
1uF OPT
C896 C898
R877
25V
4.7uF
10uF 1
10V
10V
OPT
C897
10uF
10V
+1.8V_TUNER
IC805
AP1117E18G-13
IN ADJ/GND
3 1
OPT
2
R872 C892 C894
(1A) 3.3v 1uF
OUT 1 0.1uF
10V
50V
C856
10uF
+3.3V_TUNER
10V
ADJ/GND
1
C823
C843
R865
1uF 0.1uF
1
10V 50V
OPT
OPT
C842 C906 D805
SMAB34
10uF 0.1uF
10V 50V
40V
C828
R854 10uF
0
10V
OPT
12V TO 1.15V DCDC CONVERTER
M1 Core
OPT
R811
MULTI_ON
100K 1%
R812
POWER_ON/OFF1 4.7K
11.11.07
0.1uF->0.22uF
IC806
C819
0.47uF MP1472GJ-C452-Z
11.11.07
16V C846
C830 0->47
OPT 0.22uF
0.01uF
R871
50V 47 BST SS 16V
8 1
IN EN
7 2
11.11.14
C802
C816 0CE476WH6DC(1000hr)->
10uF SW COMP
0.1uF EAE61423901(2000hr)
6 3
10V 50V
GND FB
5 4
C841
8200pF
11.11.07
25V
R822 68K->1.8K
C841 4700pF->8200pF
R822
1.8K
3.3V TO 1.5V LDO IC807
TJ4220GDP-ADJ [EP]GND
NC_1 GND
1 8
R817
POWER_ON/OFF1
4.7K EN2 ADJ/SENSE
2 7
C817
VIN3 VOUT
+3.3V_AMP 0.1uF
3 6
50V
OPT
NC4 NC_2
11.11.29 4 5
Diode DEL
0DSKE00048A
C805
+3.3V_ST
R879
10uF
0
10V
R814
0
OPT
R887
MHL_CD_SENSE 19V TO 5V DCDC FOR MHL
4.7K 5%
OPTION: (OPT)5V_PWR_FOR_MHL_ONLY
R903
MULTI_ON
100K 1%
OPT
R904
POWER_ON/OFF1 11.11.29
4.7K
0.047uF->0.033uF
OPT 150K->180K
C878
0.47uF IC808
16V
MP1472GJ-C452-Z
OPT 11.11.07
C889
C872 0->47
0.033uF
0.01uF
R890
50V 47 BST SS 50V
+19V
8 1
IN EN
7 2
11.11.14
C870
C893 0CE476WH6DC(1000hr)->
10uF SW COMP
0.1uF EAE61423901(2000hr)
6 3
25V 50V
12.03.08
EAE42868301(3225)-> GND FB
5 4
EAE61081701(3216)
C873
4700pF
11.11.14 50V
2200pF->4700pF
10K->8.2K
150pF->330pF
R895
8.2K
PANEL POWER CONTROL
+12V_PANEL_SOURCE
+12V_PANEL_POWER
Q803
AO3407A
OPT S
C879
G
4.7uF
12.07.17
10V
ZXMP3F30FHTA
D
10K->22K ->AO3407A
OPT
C899 11.11.15
1uF
0.1uF C882
25V
50V
R843
1K
C
R839
PANEL_CTL
4.7K
B Q802
MMBT3904(NXP)
E
R840
10K
111116
Panel switch deletion
111201
Panel switch recover
3.3V TO 1.23V LDO
H/W Option:FULL_NIM
IC801
TJ4220GDP-ADJ [EP]GND
+1.23V_TUNER
R2
NC_1 GND
1 8
1% 1%
EN2 ADJ/SENSE
2 7
C824
13K 4.7K
0.01uF
R862 R867
VIN3 VOUT
50V
3 6
R858
NC4 NC_2 R1 C826 C827
2.7K
4 5
10uF 0.1uF
1%
10V 50V
R859
30K
1%
Vo=0.8*(1+R2/R1)
+1.15V_VDDC
OPT
R898 L806
10uH
180K
OPT
C855 C862
C866
47uF 10uF
0.1uF
25V
10V
50V
R841
R893
1%
2K
47K
220 1%
11.11.07 OPT
R848
0->47K C881
560->220
47pF
12.08.10 50V
OPT
C850
150pF
50V
10K->8.2K
+1.5V_DDR
1% 5%
C857
10K 0
0.01uF R844 R849
50V
OPT
C864 C867
10uF
0.1uF
10V
50V
+5V_ST
R901
12.03.08
R894 0
EAE61081701(25V)->
180K
L801 10uH EAE52158501(10V)
OPT
C875 C876
C877
47uF 10uF
0.1uF
25V
10V
50V
R889
R899
33K 1%
47K
11.11.07 12K 1%
0->47K R900
R896
0
R897
C874
10K
330pF
1%
50V
EAX65303801
NC4_S7LRM 2013.1.14
POWER
8 13
LGE Internal Use Only