LG Electronics 28LN45 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS , AMP_VCC Control, 8 13, POWER, PANEL POWER CONTROL

THERMAL
THERMAL
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.
POWER
R900
12K 1%
R873
10K
OPT
C860
10uF
25V
R893
47K
L806
10uH
R894
180K
R830
0
R897
10K
1%
+1.15V_VDDC
C881
47pF
50V
OPT
R822
1.8K
C834
0.01uF
50V
C870
10uF
25V
C808
150pF
50V
OPT
+3.3V_Normal
C875
47uF
25V
C801
10uF
25V
OPT
R808
100K1%
OPT
R898
180K
OPT
C873
4700pF
50V
R816
68K
C892
1uF
10V
C836
10uF
10V
MULTI_ON
C839
2.2uF
50V
R899
47K
MULTI_ON
L800
22uH
R853
33 1%
C812
47uF
25V
R901
0
C830
0.01uF
50V
C890
4.7uF
10V
OPT
IC803
AP1117E33G-13
2
OUT
3
IN 1ADJ/GND
R825
10K
1%
C891
1uF
25V
R848
220 1%
+5V_ST
R903
100K1%
OPT
C850
150pF
50V
OPT
C865
0.01uF
50V
Q805
PMV48XP
G
D
S
C878
0.47uF
16V
OPT
L801 10uH
IC810
AP2114H-2.5TRG1
GND
VOUTVIN
C841
8200pF
25V
R821
12K
R879
0
R854
0
OPT
R804
100K1%
OPT
R843
1K
Q807
AO3407A
G
D
S
C862
10uF
10V
OPT
R895
8.2K
R841
2K
1%
R887
4.7K5%
C831
4700pF
50V
R847
0
R806
10K
OPT +12V_Normal
C824
0.01uF
50V
C866
0.1uF
50V
IC804
MP1472GJ-C452-Z
3COMP
2EN
4FB
1SS
5
GND
6
SW
7
IN
8
BST
C851
10uF
25V
OPT
MULTI_ON
C829
0.01uF
50V
R829
180K
C854
0.1uF
50V
R837
47K
C848
330pF
50V
R852
120K 1%
POWER_ON/OFF1
C821
0.1uF
50V
C896
10uF
10V
+2.5V_Normal
R801
100K
C897
10uF
10V
OPT
C845
330pF
50V
IC808
MP1472GJ-C452-Z
3COMP
2EN
4FB
1SS
5
GND
6
SW
7
IN
8
BST
C835
0.033uF
50V
C817
0.1uF
50V
OPT
R831
8.2K
1%
MULTI_ON
C906
0.1uF
50V
OPT
C807
0.1uF
16V
R884
180K
POWER_ON/OFF1
C816
0.1uF
50V
R807
1K
OPT
C803
10uF
25V
JP800
C810
0.1uF
50V
R851
47K 1%
L802 10uH
+1.5V_DDR
R867
4.7K
1%
R891
47K
C861
0.1uF
50V
C828
10uF
10V
R877
1
OPT
C802
10uF
10V
L803 10uH
R832 1K
1%
+1.8V_TUNER
MULTI_ON
R820
8.2K
+12V_PANEL_POWER
C820
47uF
25V
C895
0.1uF
50V
C8821uF
25V
C847
330pF
50V
R802
4.7K
OPT
C855
47uF
25V
R814
0
OPT
JP801
R824
0
POWER_ON/OFF1
IC802
MP1472GJ-C452-Z
3COMP
2EN
4FB
1SS
5
GND
6
SW
7
IN
8
BST
C859
10uF
10V
OPT
C868
0.01uF
50V
IC800
MP1472GJ-C452-Z
3COMP
2EN
4FB
1SS
5
GND
6
SW
7
IN
8
BST
R845
12K 1%
C853
47uF
25V
MHL_CD_SENSE
C806
0.1uF
50V
C898
4.7uF
10V
IC806
MP1472GJ-C452-Z
3COMP
2EN
4FB
1SS
5
GND
6
SW
7
IN
8
BST
R834
33K 1%
+3.3V_Normal
C818
0.1uF
50V
R870
100K
C827
0.1uF
50V
C843
1uF
10V
C814
0.1uF
50V
POWER_ON/OFF1
+1.23V_TUNER
C864
10uF
10V
R862
13K
1%
R888
47
R842
22K
R872
1
+3.3V_AMP
+19V_AMP_VCC
+3.3V_TUNER
R892
47K
R812
4.7K
Q806
MMBT3904(NXP)
E
B
C
R819
0
R838
15K
1%
R844
10K
1%
C874
330pF
50V
C804
10uF
25V
C809
0.1uF
50V
OPT
+12V_PANEL_SOURCE
C833
4700pF
50V
IC807
TJ4220GDP-ADJ
3
VIN3
2
EN2
4
NC4
1
NC_1
5NC_2
6VOUT
7ADJ/SENSE
8GND
9
[EP]GND
POWER_ON/OFF1
+5V_USB
Q802
MMBT3904(NXP)
E
B
C
R800
100K1%
R871
47
C872
0.01uF
50V
R803
36K
R875
22K
C811
0.47uF
16V
OPT
R885
180K
+3.3V_ST
OLP
C867
0.1uF
50V
OPT
C894
0.1uF
50V
OPT
L807
CPI2520NHL3R3ME 2520
3.3uH
C863
0.1uF
50V
R876 0
C823
0.1uF
50V
OPT
C899
0.1uF
50V
OPT
C800
10uF
25V
D802 40V SMAB34
C893
0.1uF
50V
Q804
MMBT3904(NXP)
E
B
C
R809
10
MULTI_ON
+3.3V_AMP
C838
0.033uF
50V
R849
0
5%
R818
8.2K
C813
0.47uF
16V
OPT
R815
300K
Q803
AO3407A
G
D
S
R855
2K 1%
R869
47
C869
220pF
50V
R865
1
R805
4.7K
R817
4.7K
R836
10K
JK800
KJA-DC-1-0032
1
2
4
C879
4.7uF
10V
OPT
R810
10K
IC809
MP1584EN
3COMP
2EN
4FB
1SW
5
GND
6
FREQ
7
VIN
8
BST
9
[EP]GND
C877
0.1uF
50V
C825
0.01uF
50V
R833 10K
1%
C858
10uF
10V
OPT
R839
4.7K
C805
10uF
10V
L805
10uH
R889
33K 1%
PANEL_CTL
+19V
C852
47uF
25V
C832
4700pF
50V
C826
10uF
10V
C846
0.22uF
16V
C819
0.47uF
16V
OPT
R874
100
+3.3V_ST
C889
0.033uF
50V
C840
10uF
10V
C837
0.1uF
50V
IC805
AP1117E18G-13
2
OUT
3
IN 1ADJ/GND
R896
0
+3.3V_ST
C876
10uF
10V
OPT
R880
10K
C842
10uF
10V
C857
0.01uF
50V
POWER_ON/OFF1
POWER_ON/OFF1
D805
40V
SMAB34
R859
30K
1%
IC801
TJ4220GDP-ADJ
3
VIN3
2
EN2
4
NC4
1
NC_1
5NC_2
6VOUT
7ADJ/SENSE
8GND
9
[EP]GND
R858
2.7K
1%
+19V
R840
10K
C856
10uF
10V
R813
4.7K
C822
0.47uF
16V
OPT
R811
100K1%
OPT
R823
47
R850
10K
1%
R890
47
R828
8.2K
C849
47uF
25V
R904
4.7K
OPT
C844
0.033uF
50V
C815
10uF
25V
R835
120K
1%
R846
05%
R826
0
R827
10K
1%
+12V_Normal
R905
0
+12V_PANEL_SOURCE
R902
0
+5V_Normal
2013.1.14
8 13
6604->6601
111116
10K->22K
1K->100
12.03.08
EAE61081701(25V)->
EAE52158501(10V)
11.11.28
1.2K->2K
12.03.08
EAE42868301(3225)->
EAE61081701(3216)
12.03.08
EAE42868301(3225)->
EAE61081701(3216)
111129
47uF DEL
1000Hr->2000Hr
12.03.08
EAE42868301(3225)->
EAE61081701(3216)
11.11.29
0.047uF->0.033uF
150K->180K
11.10.27
12.03.08
EAE42868301(3225)->
EAE61081701(3216)
11.11.29
Diode DEL
0DSKE00048A
10K->22K
11.11.07
0->47K
PANEL POWER CONTROL
11.12.01
LDO change
EAN56716601 (5A)
->EAN54428101 (1A)
Not used :
only for small(ready)
11.11.07
0->47
11.12.20
LDO change
EAN54428101 (1A) adj
->EAN54428601 (1A) 3.3v
11.11.15
11.11.07
0->47
11.11.07
0->47K
111116
Panel switch deletion
111201
Panel switch recover
AMP_VCC Control
11.10.27
AMP_VCC
11.11.14
0CE476WH6DC(1000hr)->
EAE61423901(2000hr)
11.10.27
AO3407A Vgs : 10.8V(24V input)
11.11.14
0CE476WH6DC(1000hr)->
EAE61423901(2000hr)
3.3V TO 1.5V LDO
11.11.05
11.11.14
0CE476WH6DC(1000hr)->
EAE61423901(2000hr)
AO3407A Vgs : 10.36V(19V input)
POWER_ON/OFF1
VOLTAGE HIGHER
11.11.14
2200pF->4700pF
10K->8.2K
150pF->330pF
11.11.14
2200pF->4700pF
10K->8.2K
150pF->330pF
11.11.29
0.047uF->0.033uF
150K->180K
111129
Discharging R DEL
(0RJ2201J674)
19V TO 5V DCDC CONVERTER
111116
EBK61011501(Diode)
->EBK38029201(Rohm)
->EBK61913601(NXP) 3.3V drive
11.11.07
12.03.08
EAE61081701(25V)->
EAE52158501(10V)
12.08.07
10uH->22uH
19V TO 12V DCDC CONVERTER
H/W Option:FULL_NIM
3.3V TO 1.23V LDO
11.11.07
0->47
M1 Core
12V TO 1.15V DCDC CONVERTER
11.11.07
0.1uF->0.22uF
11.11.07
0->47K
11.11.07
R822 68K->1.8K
C841 4700pF->8200pF
11.11.14
0CE476WH6DC(1000hr)->
EAE61423901(2000hr)
12.08.10
560->220
12.07.17
ZXMP3F30FHTA
->AO3407A
NC4_S7LRM
12.08.07
EAE52158501(10V)
->EAE61081701(25V)
10K->8.2K
12.03.08
EAE61081701(25V)->
EAE52158501(10V)
11.11.14
0CE476WH6DC(1000hr)->
EAE61423901(2000hr)
11.11.14
2200pF->4700pF
10K->8.2K
150pF->330pF
11.11.07
0->47
12.03.08
EAE42868301(3225)->
EAE61081701(3216)
11.11.29
0.047uF->0.033uF
150K->180K
120915
MP1584->MP1472
11.11.07
0->47K
R1
R2
Vo=0.8*(1+R2/R1)
19V TO 12V DCDC CONVERTER
121118
+19V_SCART DEL
19V TO 5V DCDC FOR MHL
OPTION: (OPT)5V_PWR_FOR_MHL_ONLY
EAX65303801
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Only for training and service purposes
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