LG 42LD490 (CHASSIS:LD03B) Service Manual ▷ View 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
L9100
6.8uH
DEV
MINI_LVDS
R9114
OPT
OPT
D9105
40V
MBRA340T3G
R9109
3K
GIP
R9132
0
R9151
0
OPT
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
RXA3-
R9133
10
GIP
R9146
33K
NON_GIP
NON_GIP
HVDD
R9161
0
0
R9113
10K
GIP
R9139
0
GIP
C9150
1uF
50V
1uF
50V
D9101
KDS226
A
AC
C
DISCHG
R9194
360
OPT
R9144
27K
1%
TCON_42_FHD
R9134-*1
200
NON_GIP
R9127
150K
TCON_42_FHD
PANEL_VCC
R9116
10
GIP
GCLK6_I
R9160
0
0
NON_GIP
GCLK4_I
EN2
GCLK4
R9134
10
GIP
C9116
1uF
50V
1uF
50V
R9163
0
0
GIP
VDD_LCM
(+16V)
C9108
10uF
25V
25V
MINI_LVDS
GVDD_EVEN
R9166
15K
1%
TCON_42_FHD
C9124
1uF
50V
R9130
220K
1%
TCON_42_FHD
R9147-*1
0
GIP
D9103
100V
MMSD4148T1G
R9110
22
GIP
CLK6
C9128
1000pF
50V
GIP
GMA16
VCC_LCM
(+3.3V)
R9177
0
0
GIP
R9115
10
GIP
C9139
1uF 50V
CLK5
CLK1
R9122
10
R9197
3.3K
NON_GIP
RXDCK+
C9104
1uF
50V
1uF
50V
GIP
R9155
510
NON_GIP
R9140
0
GIP
GCLK2
C9146
150pF
50V
150pF
50V
C9142
1uF
50V
1uF
50V
CLK2
REF
VDD_LCM
(+16V)
R9105
22
GIP
C9103
0.1uF
50V
0.1uF
50V
R9155-*1
0
GIP
GIP
C9138
0.1uF
50V
VCC_LCM
(+3.3V)
C9135
OPT
C9106
1uF
50V
MINI_LVDS
R9133-*1
200
NON_GIP
R9167
0
NON_GIP
C9129
15pF
50V
15pF
50V
NON_GIP
C9140
0.1uF
50V
C9101
0.22uF
50V
0.22uF
50V
GIP
RXD3-
C9134
OPT
GMA7
R9169
2.2
SDA3_3.3V
CLK4
VDD_LCM
(+16V)
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]
C9148
22uF
25V
22uF
25V
C9112
4.7uF
50V
MINI_LVDS
R9117
47K
OPT
VCC_LCM
(+3.3V)
FLK
R9120
7.5K
R9106
0
VCC_LCM
(+3.3V)
L9104
BLM18PG121SN1D
OPT
C9144
0.1uF
50V
0.1uF
50V
VGH
(+25V)
R9148-*1
0
GIP
C9136
27pF 50V
NON_GIP
C9123
1uF
10V
R9103
33
R9142
0
OPT
VGH
(+25V)
SCL3_3.3V
GSC/GCLK3_I
SCL3_3.3V
C9141
47uF
25V
C9143
0.1uF
50V
0.1uF
50V
FLK
C9156
15pF
50V
15pF
50V
OPT
C9119
15pF
50V
50V
NON_GIP
C9126 0.047uF
NON_GIP
C9153
100uF
25V
100uF
25V
R9138
0
C9154
OPT
VCC_LCM
(+3.3V)
VGH
(+25V)
EN2
C9159
15pF
50V
15pF
50V
OPT
L9103
BLM18PG121SN1D
R9112
10
1/8W
C9149
22uF
10V
22uF
10V
GVDD_EVEN_I
R9136
10
NON_GIP
R9148
510 NON_GIP
R9152
0
NON_GIP
TH9000
47k-ohm
NCP18WB473F10RB
GIP
GVDD_ODD
R9158
0
GIP
POL
C9157
15pF
50V
15pF
50V
OPT
R9131
11K
1%
TCON_42_FHD
C9131
15pF
50V
15pF
50V
NON_GIP
R9168
10K
GIP
RXD4+
R9196
24K
GCLK2_I
GMA12
R9107
0
GCLK5_I
R9159
0
0
GCLK6_I
VGH
(+25V)
R9150
0 GIP
R9118
10K
OPT
EN2
GOE/GCLK1_I
R9180
360
R9168-*1
33K
NON_GIP
C9105
0.1uF
50V
0.1uF
50V
R9121
0
GIP
VCOM
R9164
0
0
GIP
C9111
1uF
50V
R9153
0
NON_GIP
C9155
22uF
25V
22uF
25V
DISCHG
C9113
22pF
50V
22pF
50V
R9171
0
GOE/GCLK1_I
R9170
10
DPM_A
R9128
200K
TCON_42_FHD
VDD_LCM
(+16V)
C9145
1000pF
50V
GIP
R9173
1K
R9149
0
R9111
10
GIP
GMA15
VGH_M
(+25V)
GMA4
VCOM_FB0
R9176
0
0
GIP
R9125
18K
R9193
6.2K
OPT
C9145-*1
560pF
50V
NON_GIP
R9102
1K
1%
TCON_42_FHD
D9102
KDS226
A
AC
C
L9101
22UH
2.8A
GMA6
RXA4-
C9127
1uF
50V
RXDCK-
R9108
100
GIP
VGL
(-5V)
C9118
10uF
16V
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]
C9160
15pF
50V
15pF
50V
R9135
3.6K
VGH_FB
R9157
75K
1%
TCON_42_FHD
R9145
150K
1%
TCON_42_FHD
R9101
1K
OPT
R9172
1K
VGI_P
D9100
100V
MMSD4148T1G
OPT
R9137
0
VGI_N
C9137
0.1uF
50V
0.1uF
50V
GIP
RXD4-
DPM
VGL
(-5V)
C9158
15pF
50V
15pF
50V
OPT
R9178
0
0
GIP
VDD_LCM
(+16V)
RXA4+
C9162
22uF
25V
22uF
25V
R9104
1K
1%
TCON_42_FHD
R9174
OPT
GVDD_ODD_I
C9147
1uF
50V
1uF
50V
GCLK5_I
REF
C9133
15pF
50V
15pF
50V
OPT
C9120
15pF
50V
15pF
50V
VCOM_FB0
VCOMRFB
EN2
FLK
R9156
150K
1%
TCON_42_FHD
R9100
33
GMA3
VDD_ODD
VGH
(+25V)
C9122
0.47uF
25V
R9143
3.3K
GIP
C9109
10uF
25V
25V
MINI_LVDS
R9165
18K
1%
OPT
D9107
100V
MMSD4148T1G
PANEL_VCC
(+12V)
GCLK2_I
CLK3
R9123
1M
NON_GIP
R9195
6.2K
OPT
SOE
C9132
15pF
50V
15pF
50V
OPT
P9100
12505WS-03A00
1
2
3
4
RXD3+
C9125
68pF
NON_GIP
PANEL_VCC
(+12V)
GSP/GVST_I
C9110
1uF
25V
1uF
25V
C9117
1uF
50V
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
PANEL_VCC
(+12V)
GSC/GCLK3_I
R9175
0
0
GIP
VGL_FB
C9102
OPT
OPT
D9106
MBRA340T3G
D9104
MBRA340T3G
C9151
0.1uF
50V
0.1uF
50V
L9102
22UH
2.8A
DPM
GVDD_ODD_I
R9154
0 GIP
R9119
20K
VCOMLFB
C9137-*1
2200pF
50V
2200pF
50V
NON_GIP
VGL_I
VCOMR
VST
R9162
0
0
C9115
10uF
16V
10uF
16V
R9126
510K
TCON_42_FHD
SDA3_3.3V
R9147
2.7K
NON_GIP
NON_GIP
VGH_FB
R9181
5.1K
C9114
22uF
16V
22uF
16V
R9129
56K
1%
TCON_42_FHD
GCLK4_I
VGL_FB
C9107
1uF
50V
1uF
50V
GIP
VCC_LCM
(+3.3V)
C9100
0.1uF
50V
0.1uF
50V
VCOM
VGL
(-5V)
C9130
15pF
50V
15pF
50V
NON_GIP
VDD_EVEN
R9124
18K
GSP/GVST_I
R9141
0
EN2
VCOML
C9121
15pF
50V
15pF
50V
R9182
9.1K
1/8W
GVDD_EVEN_I
C9128-*1
470pF
50V
NON_GIP
VDD_LCM
(+16V)
C9152
1uF
10V
1uF
10V
VGL
(-5V)
GMA13
R9179
0
Signal Name Change
[HVDD Block]
6.8uH/1.8A
(6x6x2mm)
(6x6x2mm)
10uF/25V(3216)
[P-GAMMA Block]
R2
4.7uF/50V(3216)
[LEVEL Shift Block]
1uF/50V(2012)
Vo = 1.153*(1+R1/R2)
Value should
be checked
be checked
To reduce
Audible noise
Audible noise
To reduce
Audible noise
Audible noise
GSP_R
For P-Gamma Data Download
* Voltage Target
VDD_LCM = 16.25V
VGH = 28.50V
VGL = -5.35V
VDD_LCM = 16.25V
VGH = 28.50V
VGL = -5.35V
R1
[POWER Block]
CHECK Value!!
To reduce
Audible noise
Audible noise
Slave Address : 0xE8h
(AO Pin - GND)
(AO Pin - GND)
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 Power Option
09/12/15
98
Common
R9127-*4
68K
1%
1%
TCON_55_FHD
R9127-*3
150K
1%
1%
TCON_47_FHD
R9102-*1
1K
1%
1K
1%
TCON_32_FHD
R9102-*2
1.5K
5%
1.5K
5%
TCON_37_FHD
R9144-*3
51K
1%
51K
1%
TCON_47_FHD
R9128-*3
220K
1%
1%
TCON_47_FHD
R9131-*2
12K
1%
12K
1%
TCON_37_FHD
R9129-*3
51K
1%
51K
1%
TCON_47_FHD
R9131-*1
11K
1%
11K
1%
TCON_32_FHD
R9127-*1
150K
1%
1%
TCON_32_FHD
R9126-*4
180K
1%
1%
TCON_55_FHD
R9101-*3
1K
1%
1K
1%
TCON_47_FHD
R9128-*1
200K
1%
1%
TCON_32_FHD
R9145-*3
270K
1%
1%
TCON_47_FHD
R9102-*3
1K
1%
1K
1%
TCON_47_FHD
R9130-*1
220K
1%
220K
1%
TCON_32_FHD
R9145-*4
150K
1%
TCON_55_FHD
R9104-*2
1K
1%
1K
1%
TCON_37_FHD
R9104-*1
1K
1%
1K
1%
TCON_32_FHD
R9157-*3
75K
1%
1%
TCON_47_FHD
R9101-*1
1K
1%
1K
1%
TCON_32_FHD
R9156-*1
150K
1%
1%
TCON_32_FHD
R9165-*2
470K
1%
1%
TCON_37_FHD
R9101-*2
1K
1%
1K
1%
TCON_37_FHD
R9166-*3
20K
1%
1%
TCON_47_FHD
R9156-*2
910K
1%
1%
TCON_37_FHD
R9144-*4
27K
1%
27K
1%
TCON_55_FHD
R9157-*1
27K
1%
1%
TCON_32_FHD
R9130-*4
68K
1%
68K
1%
TCON_55_FHD
R9126-*1
510K
1%
1%
TCON_32_FHD
R9166-*1
24K
1%
1%
TCON_32_FHD
R9126-*3
510K
1%
1%
TCON_47_FHD
R9130-*2
220K
1%
220K
1%
TCON_37_FHD
R9166-*4
15K
1%
1%
TCON_55_FHD
R9130-*3
220K
1%
220K
1%
TCON_47_FHD
R9156-*4
150K
1%
1%
TCON_55_FHD
R9131-*4
27K
1%
27K
1%
TCON_55_FHD
R9129-*1
22K
1%
22K
1%
TCON_32_FHD
R9129-*2
47K
1%
47K
1%
TCON_37_FHD
R9145-*1
270K
1%
1%
TCON_32_FHD
R9157-*4
75K
1%
1%
TCON_55_FHD
R9166-*2
56K
1%
1%
TCON_37_FHD
R9128-*4
56K
1%
1%
TCON_55_FHD
R9156-*3
180K
1%
1%
TCON_47_FHD
R9104-*3
1K
1%
1K
1%
TCON_47_FHD
R9129-*4
510K
1%
510K
1%
TCON_55_FHD
R9131-*3
11K
1%
11K
1%
TCON_47_FHD
R9157-*2
56K
1%
1%
TCON_37_FHD
R9126-*2
470K
1%
1%
TCON_37_FHD
R9102-*4
0
5%
0
5%
TCON_55_FHD
R9144-*1
51K
1%
51K
1%
TCON_32_FHD
R9127-*2
91K
1%
1%
TCON_37_FHD
R9144-*2
20K
1%
20K
1%
TCON_37_FHD
R9145-*2
150K
1%
TCON_37_FHD
VGL
VGL
VGH
VGL
47_FHD
VGH
VCOM FEED BACK
VGL
VDD
42_FHD
91 or 95
Sheet
Sheet
HVDD
VCOM FEED BACK
VDD
R9104 OPEN
37_FHD
32_FHD
VCOM FEED BACK
HVDD
VDD
VDD
VGL
R9101 OPEN
HVDD
VGH
55_FHD
R9165 OPEN
VCOM FEED BACK
VDD
VGH
VCOM FEED BACK
HVDD
R9128 OPEN
VGH
R9165 OPEN
HVDD
R9165 OPEN
91 or 95
Sheet
Sheet
91 or 95
Sheet
Sheet
91 or 95
Sheet
Sheet
91 or 95
Sheet
Sheet