Read LG 42LD550 (CHASSIS:LA02B) Service Manual online
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.
T-Con (NO L.D.)
09/09/10
91
COMMON
C9150
1uF
50V
1uF
50V
R9153
0
NON_GIP
VDD_LCM
(+16V)
D9105
40V
MBRA340T3G
RXD4+
VST
R9120
7.5K
C9133
15pF
50V
15pF
50V
OPT
C9105
0.1uF
50V
0.1uF
50V
C9152
1uF
10V
1uF
10V
C9147
1uF
50V
1uF
50V
VGH
(+25V)
GSP/GVST_I
VGH
(+25V)
R9163
0
0
GIP
PANEL_VCC
(+12V)
DISCHG
R9182
9.1K
1/8W
R9148
510 NON_GIP
C9151
0.1uF
50V
0.1uF
50V
C9118
10uF
16V
GCLK4
R9119
20K
R9125
18K
C9136
27pF 50V
NON_GIP
CLK3
R9167
0
NON_GIP
R9137
0
VGH
(+25V)
D9103
100V
MMSD4148T1G
DPM
C9145
1000pF
50V
GIP
FLK
HVDD
R9159
0
0
C9103
0.1uF
50V
0.1uF
50V
C9137
0.1uF
50V
0.1uF
50V
GIP
GVDD_ODD
D9104
MBRA340T3G
VCOM_FB0
VCC_LCM
(+3.3V)
P9100
12505WS-03A00
OPT
1
2
3
4
GOE/GCLK1_I
GVDD_EVEN_I
GCLK2_I
PANEL_VCC
(+12V)
SDA3_3.3V
C9130
15pF
50V
15pF
50V
NON_GIP
VGI_P
CLK6
R9176
0
0
GIP
VGH
(+25V)
C9122
0.47uF
25V
CLK2
VCC_LCM
(+3.3V)
EN2
R9122
10
GMA6
DISCHG
R9143
3.3K
GIP
R9118
10K
OPT
VGL
(-5V)
VCC_LCM
(+3.3V)
R9147-*1
0
GIP
R9162
0
0
FLK
C9116
1uF
50V
1uF
50V
GSC/GCLK3_I
C9145-*1
560pF
50V
NON_GIP
R9161
0
0
VCOMRFB
C9142
1uF
50V
1uF
50V
R9124
18K
GCLK5_I
RXDCK+
C9107
1uF
50V
1uF
50V
GIP
D9100
100V
MMSD4148T1G
OPT
R9112
10
1/8W
C9128
1000pF
50V
GIP
VGL_FB
L9102
22UH
2.8A
VGH_M
(+25V)
SCL3_3.3V
C9132
15pF
50V
15pF
50V
OPT
GOE/GCLK1_I
C9100
0.1uF
50V
0.1uF
50V
GVDD_EVEN_I
C9102
OPT
OPT
VGL
(-5V)
SCL3_3.3V
GCLK2_I
VDD_LCM
(+16V)
EN2
VDD_LCM
(+16V)
C9104
1uF
50V
1uF
50V
GIP
R9108
100
GIP
C9154
OPT
GSP/GVST_I
VCC_LCM
(+3.3V)
VDD_ODD
R9107
0
VGH_FB
R9138
0
RXD3+
VCC_LCM
(+3.3V)
C9158
15pF
50V
15pF
50V
OPT
C9131
15pF
50V
15pF
50V
NON_GIP
VGL_I
D9102
KDS226
A
AC
C
R9103
33
PANEL_VCC
VCOM
R9179
0
GMA12
C9159
15pF
50V
15pF
50V
OPT
C9137-*1
2200pF
50V
2200pF
50V
NON_GIP
R9135
3.6K
R9142
0
OPT
GCLK6_I
L9101
22UH
2.8A
GMA4
R9113
10K
GIP
C9134
OPT
GMA13
R9134-*1
200
NON_GIP
R9154
0 GIP
GCLK6_I
R9133-*1
200
NON_GIP
C9126 0.047uF
NON_GIP
GMA7
C9149
22uF
10V
22uF
10V
C9157
15pF
50V
15pF
50V
OPT
POL
R9150
0 GIP
R9171
0
R9152
0
NON_GIP
R9158
0
GIP
C9140
0.1uF
50V
R9134
10
GIP
VGL
(-5V)
VCOM
CLK1
R9155
510
NON_GIP
GSC/GCLK3_I
R9175
0
0
GIP
FLK
GVDD_EVEN
C9124
1uF
50V
C9138
0.1uF
50V
R9172
1K
R9123
1M
NON_GIP
C9143
0.1uF
50V
0.1uF
50V
R9173
1K
R9181
5.1K
R9147
2.7K
NON_GIP
NON_GIP
RXDCK-
C9127
1uF
50V
C9144
0.1uF
50V
0.1uF
50V
SDA3_3.3V
R9174
OPT
GCLK5_I
C9146
150pF
50V
150pF
50V
C9119
15pF
50V
50V
NON_GIP
DPM_A
R9109
3K
GIP
C9115
10uF
16V
10uF
16V
VDD_LCM
(+16V)
VGL_FB
CLK5
R9141
0
C9160
15pF
50V
15pF
50V
RXD4-
VGI_N
VGH
(+25V)
R9139
0
GIP
R9168
10K
GIP
R9169
2.2
GCLK2
R9178
0
0
GIP
R9106
0
RXD3-
C9121
15pF
50V
15pF
50V
VCOM_FB0
VDD_EVEN
REF
C9113
22pF
50V
22pF
50V
C9129
15pF
50V
15pF
50V
NON_GIP
R9133
10
GIP
VDD_LCM
(+16V)
D9101
KDS226
A
AC
C
CLK4
R9168-*1
33K
NON_GIP
GMA15
REF
R9146
33K
NON_GIP
NON_GIP
GMA3
R9151
0
OPT
VCOMLFB
R9177
0
0
GIP
C9139
1uF 50V
R9117
47K
OPT
R9100
33
C9117
1uF
50V
VGL
(-5V)
EN2
C9128-*1
470pF
50V
NON_GIP
RXA4-
RXA4+
RXA3-
VCOMR
R9180
360
R9132
0
VGH_FB
C9120
15pF
50V
15pF
50V
R9136
10
NON_GIP
PANEL_VCC
(+12V)
GCLK4_I
C9156
15pF
50V
15pF
50V
OPT
GCLK4_I
C9101
0.22uF
50V
0.22uF
50V
GIP
DPM
VCOML
GVDD_ODD_I
GMA16
GVDD_ODD_I
R9160
0
0
NON_GIP
R9140
0
GIP
C9148
22uF
25V
22uF
25V
OPT
C9111
1uF
50V
C9135
OPT
R9121
0
GIP
R9164
0
0
GIP
SOE
R9148-*1
0
GIP
R9155-*1
0
GIP
GIP
L9100
6.8uH
DEV
MINI_LVDS
IC9103
MAX17113ETL+
DEV
MINI_LVDS
EAN60924401
3
GND2
2
DRVP
4
SRC
1
THR
6
DRN
5
GON
7
MODE
8
DLP
9
FBP
10
GPGND
11
CTL
12
DRVN
13
AGND
14
FBN
15
REF
16
DEL1
17
FB2
18
BST
19
LX2
20
LX2
21
OUT
22
IN2
23
IN2
24
VIN
25
FSEL
26
EN1
27
DEL2
28
VL
29
EN2
30
PGND
31
PGND
32
LX1
33
LX1
34
SW1
35
SW0
36
FB1
37
COMP
38
PGOOD
39
CRST
40
AGND
IC9102
TPS62110RSAR
MINI_LVDS
EAN60985901
DEV
1
PGND_1
3
VIN_2
7
LBI
9
AGND
10
FB
11
GND_1
12
GND_2
13
PG
14
SW_1
15
SW_2
16
PGND_2
5
SYNC
8
VINA
6
LBO
4
EN
2
VIN_1
IC9101
MAX17119DS
GIP
EAN60987201
DEV
1
A9
3
A7
7
A3
9
A1
10
GON1
11
GOFF
12
GON2
13
Y1
14
Y2
15
Y3
16
Y4
17
Y5
18
Y6
19
Y7
20
Y8
21
Y9
22
YDCHG
23
GND
24
RE
25
FLK3
26
FLK2
27
FLK1
28
VSENSE
5
A5
8
A2
6
A4
4
A6
2
A8
29
EP[VGOFF]
R9111
10
GIP
R9115
10
GIP
R9116
10
GIP
IC9100
MAX9668ETP+
MINI_LVDS
DEV
1
SDA
3
DVDD
7
AVDD_AMP
9
NC_1
10
GMA1
11
GMA2
12
GMA3
13
GMA4
14
GMA5
15
GMA6
16
AVDD_2
17
NC_2
18
GMA7
19
GMA8
20
SCL
5
VCOM
8
AVDD_1
6
VCOM_FB
4
AGND_AMP
2
A0
21
EP[GND]
R9193
6.2K
OPT
R9114
OPT
OPT
C9108
10uF
25V
25V
OPT
C9109
10uF
25V
25V
OPT
C9112
4.7uF
50V
C9114
22uF
16V
22uF
16V
C9123
1uF
10V
R9149
0
EN2
R9170
10
TH9100
47k-ohm
NCP18WB473F10RB
GIP
C9106
1uF
50V
MINI_LVDS
C9153
100uF
25V
100uF
25V
C9141
47uF
25V
R9195
6.2K
OPT
R9194
360
OPT
EN2
D9106
MBRA340T3G
R9110
22
GIP
R9105
22
GIP
C9125
68pF
NON_GIP
VCC_LCM
(+3.3V)
R9197
3.3K
NON_GIP
R9131-*3 27K
R9166-*3 15K
R9156-*3 150K
R9144-*3 27K
75K
R9157-*3
DEV
R9130-*3 68K
DEV
R9166-*1 15K
75K
R9157-*2
DEV
R9144-*2 51K
DEV
R9156-*1 150K
R9156-*2 180K
DEV
R9129-*1 56K
75K
R9157-*1
DEV
R9129-*2 51K
DEV
R9130-*2 220K
DEV
R9166-*2 20K
R9130-*1 220K
DEV
R9145-*2 270K
DEV
R9131-*2 11K
DEV
R9145-*3 150K
R9129-*3
510K
R9131-*1 11K
DEV
R9131
11K
32_FHD_GIP
DEV
R9156
150K
32_FHD_GIP
R9165
18K
OPT
R9126-*1 510K
R9128-*2 220K
DEV
R9126-*2 510K
R9126-*3 180K
DEV
R9127-*2 150K
R9127-*3 68K
DEV
R9128-*3 56K
R9127-*1 150K
R9126
510K
R1
32_FHD_GIP
R9127
150K
32_FHD_GIP
R9128-*1 200K
DEV
R9128
200K
32_FHD_GIP
DEV
R9129
22K
32_FHD_GIP
R9130
220K
32_FHD_GIP
DEV
R9144
51K
32_FHD_GIP
DEV
R9145
270K
32_FHD_GIP
DEV
R9157
27K
32_FHD_GIP
R9166
24K
32_FHD_GIP
R9144-*1 27K
DEV
R9145-*1 150K
DEV
R9102-*4 0
R9102-*2 1K
R9102
1K
32_FHD_GIP
R9101
1K
32_FHD_GIP
R9104
1K
32_FHD_GIP
R9104-*3 1K
R9101-*1 1K
R9102-*3 1K
R9104-*2 1K
R9104-*1 1K
R9101-*3 1K
R9102-*1 1.5K
D9107
100V
MMSD4148T1G
L9104
BLM18PG121SN1D
VDD_LCM
(+16V)
L9103
BLM18PG121SN1D
OPT
R9196
24K
C9110
1uF
25V
1uF
25V
C9155
100uF
25V
100uF
25V
[P-GAMMA Block]
Vo = 1.153*(1+R1/R2)
CHECK Value!!
10uF/25V(3216)
4.7uF/50V(3216)
R2
For P-Gamma Data Download
6.8uH/1.8A
(6x6x2mm)
(6x6x2mm)
[LEVEL Shift Block]
GSP_R
Slave Address : 0xE8h
(AO Pin - GND)
(AO Pin - GND)
[POWER Block]
Signal Name Change
[HVDD Block]
To reduce
Audible noise
Audible noise
To reduce
Audible noise
Audible noise
To reduce
Audible noise
Audible noise
Value should
be checked
be checked
R9157
R9156
55_FHD_Non_GIP
R9131
OPEN
OPEN
R9165
R9129
42_FHD_GIP
R9130
OPEN
R9144
R9145
47_FHD_GIP
R9166
47_FHD_GIP
R9126
R9128
42_FHD_GIP
55_FHD_Non_GIP
R9127
HVDD
VGH
VDD
VGL
8.0V
7.7V
7.9V
28.00V(27.00)
29.00V(28.00)
29.15V(27.69)
8.0V
28.00V
16.00V
16.2V
16.25V
15.5V
-5.0V
-5.0V
-5.3V
-5.3V
47_FHD_GIP
R9104
55_FHD_Non_GIP
R9102
R9101
42_FHD_GIP
VCOM
37_FHD_GIP
OPEN
OPEN
OPEN
VCOMRFB
VCOMLFB
VCOM_FB0
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