Read LG 22LN4500 (CHASSIS:LD31A) Service Manual online
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.
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
R865
1
C858
10uF
10uF
10V
OPT
R831
8.2K
1%
R843
1K
C827
0.1uF
50V
0.1uF
50V
BR(FULL_NIM)
C813
0.47uF
16V
OPT
R858
2.7K
1%
BR(FULL_NIM)
R892
47K
47K
POWER_ON/OFF1
JK800
KJA-DC-1-0032
1
2
4
R824
0
L806
10uH
10uH
C843
1uF
10V
1uF
10V
IC810
AP2114H-2.5TRG1
GND
VOUT
VIN
R800
100K 1%
100K 1%
R817
4.7K
C816
0.1uF
50V
C802
10uF
10V
10V
R888
47
+5V_USB
R874
100
C882
1uF
25V
IC802
MP1472GJ-C452-Z
3
COMP
2
EN
4
FB
1
SS
5
GND
6
SW
7
IN
8
BST
C812
47uF
25V
25V
Q807
AO3407A
G
D
S
C850
150pF
50V
150pF
50V
OPT
R838
15K
1%
R835
120K
1%
Q805
PMV48XP
G
D
S
C837
0.1uF
50V
0.1uF
50V
POWER_ON/OFF1
R821
12K
12K
C832
4700pF
50V
4700pF
50V
Q806
MMBT3904(NXP)
MMBT3904(NXP)
E
B
C
C808
150pF
50V
150pF
50V
OPT
C853
47uF
25V
25V
+12V_PANEL_POWER
R842
22K
R803
36K
IC803
AP1117E33G-13
2
OUT
3
IN
1
ADJ/GND
R880
10K
10K
C819
0.47uF
16V
OPT
C881
47pF
50V
47pF
50V
OPT
+3.3V_ST
C859
10uF
10uF
25V
OPT
R825
10K
1%
C864
10uF
10V
10uF
10V
+19V_AMP_VCC
R854
0
0
OPT
IC801
TJ4220GDP-ADJ
BR(FULL_NIM)
3
VIN3
2
EN2
4
NC4
1
NC_1
5
NC_2
6
VOUT
7
ADJ/SENSE
8
GND
9
[EP]GND
+12V_Normal
R826
0
C863
0.1uF
50V
0.1uF
50V
R822
1.8K
+1.23V_TUNER
R804
100K 1%
100K 1%
OPT
R862
13K
1%
BR(FULL_NIM)
+5V_Normal
R893
47K
47K
R836
10K
C801
10uF
25V
25V
OPT
+3.3V_AMP
R870
100K
100K
IC806
MP1472GJ-C452-Z
3
COMP
2
EN
4
FB
1
SS
5
GND
6
SW
7
IN
8
BST
R810
10K
10K
IC809
MP1584EN
3
COMP
2
EN
4
FB
1
SW
5
GND
6
FREQ
7
VIN
8
BST
9
[EP]GND
C855
47uF
25V
25V
+12V_Normal
POWER_ON/OFF1
R869
47
C836
10uF
10V
10uF
10V
R819
0
+3.3V_ST
POWER_ON/OFF1
PANEL_CTL
R841
2K
1%
C814
0.1uF
50V
0.1uF
50V
R859
30K
1%
1%
BR(FULL_NIM)
+12V_Normal
C868
0.01uF
50V
R840
10K
R855
2K
1%
IC805
AP1117E18G-13
2
OUT
3
IN
1
ADJ/GND
R811
100K 1%
100K 1%
OPT
R898
180K
OPT
R885
180K
C856
10uF
10V
10uF
10V
+3.3V_Normal
R827
10K
1%
C892
1uF
10V
1uF
10V
C838
0.033uF
50V
0.033uF
50V
C866
0.1uF
50V
0.1uF
50V
C890
4.7uF
10V
4.7uF
10V
OPT
C852
47uF
25V
25V
R833
10K
1%
C805
10uF
10V
10uF
10V
C826
10uF
10V
10uF
10V
BR(FULL_NIM)
C860
10uF
25V
10uF
25V
C835
0.033uF
50V
0.033uF
50V
R805
4.7K
R830
0
+19V
C825
0.01uF
50V
R839
4.7K
4.7K
Q803
AO3407A
G
D
S
C891
1uF
25V
R844
10K
1%
C804
10uF
25V
25V
C869
220pF
50V
220pF
50V
R873
10K
OPT
C830
0.01uF
50V
C834
0.01uF
50V
R872
1
C862
10uF
10uF
10V
OPT
L805
10uH
10uH
C824
0.01uF
50V
0.01uF
50V
BR(FULL_NIM)
IC807
TJ4220GDP-ADJ
3
VIN3
2
EN2
4
NC4
1
NC_1
5
NC_2
6
VOUT
7
ADJ/SENSE
8
GND
9
[EP]GND
C846
0.22uF
16V
0.22uF
16V
Q802
MMBT3904(NXP)
MMBT3904(NXP)
E
B
C
R879
0
0
R813
0
MULTI_ON
R801
100K
C842
10uF
10V
10uF
10V
R816
68K
+2.5V_Normal
D805
40V
SMAB34
BR(FULL_NIM)
C845
330pF
50V
330pF
50V
C897
10uF
10V
10uF
10V
OPT
R871
47
C879
4.7uF
10V
4.7uF
10V
OPT
R846
0
5%
C817
0.1uF
50V
OPT
R848
220 1%
R806
10K
OPT
C896
10uF
10V
10uF
10V
R808
0
C906
0.1uF
50V
0.1uF
50V
OPT
MULTI_ON
C807
0.1uF
16V
0.1uF
16V
R815
300K
R818
8.2K
MULTI_ON
C806
0.1uF
50V
C833
4700pF
50V
4700pF
50V
C800
10uF
25V
25V
R884
180K
+3.3V_AMP
R849
0
5%
R807
1K
1K
OPT
IC800
MP1472GJ-C452-Z
3
COMP
2
EN
4
FB
1
SS
5
GND
6
SW
7
IN
8
BST
C803
10uF
25V
10uF
25V
C839
2.2uF
2.2uF
50V
Q804
MMBT3904(NXP)
MMBT3904(NXP)
E
B
C
C899
0.1uF
50V
0.1uF
50V
OPT
D802
40V
SMAB34
R809
10
C823
0.1uF
50V
OPT
POWER_ON/OFF1
JP800
C810
0.1uF
50V
R851
47K 1%
R876
0
L807
CPI2520NHL3R3ME
2520
3.3uH
C894
0.1uF
50V
0.1uF
50V
OPT
C867
0.1uF
50V
0.1uF
50V
OPT
MULTI_ON
C857
0.01uF
50V
0.01uF
50V
OLP
C811
0.47uF
16V
OPT
R875
22K
L802
10uH
C841
8200pF
25V
8200pF
25V
+1.5V_DDR
R812
4.7K
C865
0.01uF
50V
0.01uF
50V
C809
0.1uF
50V
OPT
+3.3V_TUNER
R867
4.7K
1%
BR(FULL_NIM)
C818
0.1uF
50V
C847
330pF
50V
330pF
50V
+3.3V_Normal
R891
47K
47K
R834
33K 1%
C898
4.7uF
10V
4.7uF
10V
R845
12K 1%
C861
0.1uF
50V
0.1uF
50V
JP801
C828
10uF
10V
10uF
10V
BR(FULL_NIM)
R877
1
OPT
C840
10uF
10uF
10V
R820
8.2K
L803
10uH
R832
1K
1%
+1.8V_TUNER
+3.3V_ST
C820
47uF
25V
25V
C895
0.1uF
50V
0.1uF
50V
R802
4.7K
OPT
+1.15V_VDDC
R814
0
0
OPT
C877
0.1uF
50V
0.1uF
50V
IC808
MP1472GJ-C452-Z
3
COMP
2
EN
4
FB
1
SS
5
GND
6
SW
7
IN
8
BST
R903
100K 1%
100K 1%
OPT
R896
0
MULTI_ON
R897
10K
1%
R899
47K
47K
L801
10uH
R895
8.2K
C876
10uF
10uF
10V
OPT
C875
47uF
25V
25V
R904
4.7K
OPT
R890
47
C873
4700pF
50V
4700pF
50V
C878
0.47uF
16V
OPT
R901
0
R900
12K 1%
C889
0.033uF
50V
0.033uF
50V
R894
180K
C872
0.01uF
50V
C870
10uF
25V
25V
+5V_ST
C874
330pF
50V
330pF
50V
C893
0.1uF
50V
POWER_ON/OFF1
R902
33K 1%
+19V
MHL_CD_SENSE
R887
4.7K 5%
4.7K 5%
8 12
6604->6601
111116
10K->22K
1K->100
10K->22K
1K->100
12.03.08
EAE61081701(25V)->
EAE52158501(10V)
EAE61081701(25V)->
EAE52158501(10V)
11.11.28
1.2K->2K
1.2K->2K
12.03.08
EAE42868301(3225)->
EAE61081701(3216)
EAE42868301(3225)->
EAE61081701(3216)
12.03.08
EAE42868301(3225)->
EAE61081701(3216)
EAE42868301(3225)->
EAE61081701(3216)
111129
47uF DEL
47uF DEL
1000Hr->2000Hr
11.11.29
0.047uF->0.033uF
150K->180K
0.047uF->0.033uF
150K->180K
11.10.27
12.03.08
EAE42868301(3225)->
EAE61081701(3216)
EAE42868301(3225)->
EAE61081701(3216)
11.11.29
Diode DEL
0DSKE00048A
Diode DEL
0DSKE00048A
11.11.07
0->47K
0->47K
11.12.01
LDO change
EAN56716601 (5A)
->EAN54428101 (1A)
LDO change
EAN56716601 (5A)
->EAN54428101 (1A)
Not used :
only for small(ready)
only for small(ready)
11.11.07
0->47
0->47
11.12.20
LDO change
EAN54428101 (1A) adj
->EAN54428601 (1A) 3.3v
LDO change
EAN54428101 (1A) adj
->EAN54428601 (1A) 3.3v
AMP_VCC Control
11.10.27
AMP_VCC
11.11.14
0CE476WH6DC(1000hr)->
EAE61423901(2000hr)
0CE476WH6DC(1000hr)->
EAE61423901(2000hr)
11.10.27
AO3407A Vgs : 10.8V(24V input)
11.11.14
0CE476WH6DC(1000hr)->
EAE61423901(2000hr)
0CE476WH6DC(1000hr)->
EAE61423901(2000hr)
3.3V TO 1.5V LDO
11.11.05
AO3407A Vgs : 10.36V(19V input)
POWER_ON/OFF1
VOLTAGE HIGHER
VOLTAGE HIGHER
11.11.14
2200pF->4700pF
10K->8.2K
150pF->330pF
2200pF->4700pF
10K->8.2K
150pF->330pF
111129
Discharging R DEL
(0RJ2201J674)
Discharging R DEL
(0RJ2201J674)
19V TO 5V DCDC CONVERTER
111116
EBK61011501(Diode)
->EBK38029201(Rohm)
->EBK61913601(NXP) 3.3V drive
EBK61011501(Diode)
->EBK38029201(Rohm)
->EBK61913601(NXP) 3.3V drive
11.11.07
H/W Option:FULL_NIM
3.3V TO 1.23V LDO
11.11.07
0.1uF->0.22uF
0.1uF->0.22uF
M1 Core
11.11.07
0->47K
0->47K
12V TO 1.15V DCDC CONVERTER
11.11.07
R822 68K->1.8K
C841 4700pF->8200pF
R822 68K->1.8K
C841 4700pF->8200pF
11.11.14
0CE476WH6DC(1000hr)->
EAE61423901(2000hr)
0CE476WH6DC(1000hr)->
EAE61423901(2000hr)
11.11.07
0->47
0->47
NC4_S7LRM
12.08.10
560->220
10K->8.2K
11.11.14
0CE476WH6DC(1000hr)->
EAE61423901(2000hr)
0CE476WH6DC(1000hr)->
EAE61423901(2000hr)
2012.08.12
R835 : 33k -> 120k
R846 : 12K -> 0
R835 : 33k -> 120k
R846 : 12K -> 0
11.11.14
2200pF->4700pF
10K->8.2K
150pF->330pF
2200pF->4700pF
10K->8.2K
150pF->330pF
11.11.07
0->47K
0->47K
19V TO 12V DCDC CONVERTER
11.11.07
0->47
0->47
12.03.08
EAE42868301(3225)->
EAE61081701(3216)
EAE42868301(3225)->
EAE61081701(3216)
11.11.29
0.047uF->0.033uF
150K->180K
0.047uF->0.033uF
150K->180K
10K->22K
PANEL POWER CONTROL
111116
Panel switch deletion
111201
Panel switch recover
Panel switch deletion
111201
Panel switch recover
11.11.15
12.07.17
ZXMP3F30FHTA
->AO3407A
ZXMP3F30FHTA
->AO3407A
11.11.29
0.047uF->0.033uF
150K->180K
0.047uF->0.033uF
150K->180K
11.11.07
0->47K
0->47K
12.03.08
EAE42868301(3225)->
EAE61081701(3216)
EAE42868301(3225)->
EAE61081701(3216)
11.11.07
0->47
0->47
12.03.08
EAE61081701(25V)->
EAE52158501(10V)
EAE61081701(25V)->
EAE52158501(10V)
11.11.14
2200pF->4700pF
10K->8.2K
150pF->330pF
2200pF->4700pF
10K->8.2K
150pF->330pF
11.11.14
0CE476WH6DC(1000hr)->
EAE61423901(2000hr)
0CE476WH6DC(1000hr)->
EAE61423901(2000hr)
120915
MP1584->MP1472
MP1584->MP1472
19V TO 5V DCDC FOR MHL
OPTION: (OPT)5V_PWR_FOR_MHL_ONLY
EAX65077303
2013.1.14
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