LG 42LD455B / 42LD455H (CHASSIS:LC01W) Service Manual ▷ View online
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.
2SC3052
Commercial_EU
Q2401
E
B
C
KEY2
100
R2412
EYEQ/TOUCH_KEY
22
Commercial
R2403
+3.5V_ST
47K
Commercial
R2408
1000pF
50V
50V
OPT
C2408
47K
Commercial
R2409
+3.5V_ST
0 . 1 u F
16V
C2405
0 . 1 u F
C2402
AMOTECH
5.6V
D2401
47K
Commercial_EU
R2406
100
R2402
100pF
50V
C2407
1000pF
50V
C2404
BLM18PG121SN1D
L2402
0 . 1 u F
C2401
LED_R/BUZZ
+3.3V_Normal
+3.5V_ST
1000pF
50V
C2406
100
R2410
0 . 1 u F
16V
C2410
OPT
100
R2401
LED_B/LG_LOGO
1000pF
50V
50V
OPT
C2409
10K
Commercial_EU
R2407
+3.5V_ST
KEY1
BLM18PG121SN1D
L2403
BLM18PG121SN1D
L2401
100
R2411
EYEQ/TOUCH_KEY
0 . 1 u F
16V
C2403
10K
R2416
OPT
2SC3052
Commercial
Q2402
E
B
C
BLM18PG121SN1D
L2404
IR_OUT
AMOTECH
5.6V
D2402
0
R2422
Commercial_US
10K
1%
R2404
10K
1%
R2405
22
R2417
WIRELESS
10K
R2418
WIRELESS
47K
R2419
WIRELESS
IR_PASS
47K
R2420
WIRELESS
2SC3052
Q2403
WIRELESS
E
B
C
47K
R2421
WIRELESS
2SC3052
Q2404
WIRELESS
E
B
C
+3.5V_ST
+3.5V_ST
12507WR-12L
P2401
1
2
3
4
5
6
7
8
9
10
11
12
13
47K
R2425
2SC3052
Q2406
E
B
C
47K
R2429
10K
R2430
47K
R2431
22
R2428
+3.5V_ST
2SC3052
Q2405
E
B
C
+3.5V_ST
IR
+3.5V_ST
3.3K
OPT
R2426
0
OPT
R2427
NEC_EEPROM_SCL
NEC_EEPROM_SDA
1.5K
R2414
1.5K
R2413
JP2407
JP2408
JP2409
JP2410
JP2411
5 . 6 B
D2403
5 . 6 B
D2404
5 . 6 B
D2405
CONTROL
IR & LED
IR & LED
c l o s e t o w a f e r
Z e n e r D i o d e i s
GP2_Saturn7M
COMMERCIAL
V e r . 1 . 2
WIRELESS
6
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.
DDC_SCL_3
0
R845
0
R831
AT24C02BN-10SU-1.8
IC801
HDMI_1
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
0
R842
DDC_SCL_3
0
R822
4.7K
R885
5V_HDMI_1
J P 8 0 1
CK+_HDMI2
2SC3052
Q802
E
B
C
0
R817
CK+_HDMI3
D1-_HDMI4
D801
DDC_SCL_4
D1+_HDMI2
D2+_HDMI1
HPD3
5V_HDMI_1
2SC3052
Q803
E
B
C
HDMI_CEC
100
R841
0
R834
DDC_SCL_1
1K
R895
1K
R897
D1-_HDMI3
10K
R873
0 . 1 u F
16V
16V
C801
J P 8 0 5
5V_HDMI_3
0
R810
100
R824
0
R807
22
R805
DDC_SCL_1
4.7K
R886
2SC3052
Q804
E
B
C
D0-_HDMI3
1.8K
R838
HPD4
D2+_HDMI2
DDC_SDA_3
J P 8 0 8
D0+_HDMI2
AT24C02BN-10SU-1.8
IC803
HDMI_3
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
0
R848
DDC_SDA_4
0
R827
3.3K
R801
0
R844
J P 8 0 7
D2-_HDMI2
5V_HDMI_2
5V_DET_HDMI_1
D0-_HDMI4
22
R877
J P 8 1 2
22
R879
DDC_SCL_2
1K
R896
HPD1
4.7K
R888
0 . 1 u F
C807
0
R847
D811
0
R823
CK-_HDMI2
D1+_HDMI3
D2-_HDMI1
AT24C02BN-10SU-1.8
IC802
HDMI_2
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
D2-_HDMI3
D0+_HDMI1
10K
R872
+5V_Normal
D1-_HDMI2
2SC3052
Q801
E
B
C
ENKMC2838-T112
D822
D822
A1
C
A2
0
R832
EDID_WP
D0-_HDMI2
DDC_SDA_4
22
R875
0 . 1 u F
C809
DDC_SDA_2
22
R880
0
R843
1.8K
R837
0
R816
D2-_HDMI4
5V_HDMI_4
DDC_SDA_2
0 . 1 u F
C808
HPD2
EAG59023302
JK802
HDMI_1
14
13
5
D1_GND
20
SHIELD
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
J P 8 0 3
0
R811
4.7K
R889
HDMI_CEC
5V_HDMI_2
D1+_HDMI4
D802
0
R808
J P 8 0 6
D1+_HDMI1
4.7K
R890
5V_HDMI_4
10K
R862
CK-_HDMI4
D0+_HDMI4
ENKMC2838-T112
D823
D823
A1
C
A2
EDID_WP
22
R876
J P 8 0 9
3.3K
R802
0
R849
ENKMC2838-T112
D821
D821
A1
C
A2
CK+_HDMI4
D0+_HDMI3
0
R829
J P 8 1 1
+5V_Normal
22
R806
10K
R871
100
R860
0
R820
22
R878
AT24C02BN-10SU-1.8
IC804
HDMI_SIDE
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
0
R846
CK-_HDMI1
0 . 1 u F
16V
16V
C803
DDC_SCL_4
EAG59023302
JK804
HDMI_3
14
13
5
D1_GND
20
SHIELD
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
1.8K
R803
0
R819
0 . 1 u F
16V
16V
C802
0
R852
J P 8 0 4
EDID_WP
D0-_HDMI1
1K
R894
DDC_SDA_1
3.3K
R835
J P 8 1 0
3.3K
R836
0
R809
10K
R830
5V_DET_HDMI_3
D2+_HDMI3
J P 8 0 2
0
R818
D2+_HDMI4
HDMI_CEC
ENKMC2838-T112
D824
D824
A1
C
A2
+5V_Normal
22
R826
5V_DET_HDMI_2
EDID_WP
10K
R828
0
R814
5V_HDMI_3
CK-_HDMI3
D1-_HDMI1
0 . 1 u F
16V
16V
C804
0 . 1 u F
C806
0
R813
0
R833
1.8K
R804
HDMI_CEC
DDC_SDA_1
4.7K
R884
100
R815
0
R812
0
R821
EAG59023302
JK801
HDMI_2
14
13
5
D1_GND
20
SHIELD
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
D812
DDC_SCL_2
CK+_HDMI1
+5V_Normal
0
R850
5V_DET_HDMI_4
DDC_SDA_3
10K
R874
10K
R864
AVRL161A1R1NT
D826
OPT
GND
HDMI_CEC
CEC_REMOTE_NEC
0 . 1 u F
16V
16V
C810
GND
10K
R893
D825
0
OPT
R883
22
R825
22
R859
22
R851
22
R839
22
R840
22
R881
22
R882
4.7K
R887
4.7K
R891
EAG42463001
JK803
HDMI_SIDE
14
13
5
D1_GND
20
JACK_GND
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
BSS83
Q805
S
B
D
G
68K
R892
+3.5V_ST
68K
R853
CEC_ON/OFF
GND
68K
R854
68K
OPT
OPT
R857
0
OPT
R855
0 . 1 u F
16V
16V
C805
AVRL161A1R1NT
OPT
D803
D804
10K
R856
GND
BSS83
Q806
S
B
D
G
+3.3V_Normal
0
R858
CEC_REMOTE_S7
HDMI
GP2_Saturn7M
V e r . 1 . 2
SIDE_HDMI
$0.055
$0.253
HDMI_1
HDMI_3
HDMI_2
$0.055
HDMI EEPROM
$0.253
$0.253
$0.055
$0.253
$0.055
For CEC
8
150K
1%
1%
TCON_32_FHD
R635-*1
27K
1%
1%
TCON_32_FHD
R636-*1
24K
1%
1%
TCON_32_FHD
R641-*1
510K
TCON_32_FHD
1%
R609-*1
150K
1%
1%
TCON_32_FHD
R610-*1
150K
1%
1%
TCON_37_FHD
R643-*2
20K
TCON_37_FHD
R637-*2
1%
910K
1%
1%
TCON_37_FHD
R635-*2
470K
1%
1%
TCON_37_FHD
R640-*2
56K
1%
1%
TCON_37_FHD
R636-*2
56K
1%
1%
TCON_37_FHD
R641-*2
470K
TCON_37_FHD
1%
R609-*2
510K
TCON_42_FHD
1%
R609-*3
150K
1%
1%
TCON_42_FHD
R635-*3
150K
1%
1%
TCON_42_FHD
R610-*3
150K
1%
1%
TCON_47_FHD_60_LAMP
R610-*4
510K
TCON_47_FHD_60_LAMP
1%
R609-*4
15K
1%
1%
TCON_42_FHD
R641-*3
56K
1%
1%
TCON_42_FHD
R620-*3
20K
1%
1%
TCON_47_FHD_60_LAMP
R641-*4
510K
TCON_47_FHD
1%
R609-*5
150K
1%
1%
TCON_47_FHD
R610-*5
12K
1%
1%
TCON_37_FHD
R622-*2
22K
1%
1%
TCON_32_FHD
R620-*1
20K
1%
1%
TCON_47_FHD
R641-*5
220K
1%
1%
TCON_32_FHD
R621-*1
11K
1%
1%
TCON_32_FHD
R622-*1
51K
1%
1%
TCON_32_FHD
R637-*1
270K
TCON_32_FHD
R643-*1
1%
200K
TCON_32_FHD
R611-*1
1%
47K
1%
1%
TCON_37_FHD
R620-*2
220K
1%
1%
TCON_37_FHD
R621-*2
91K
TCON_37_FHD
R610-*2
1%
220K
1%
1%
TCON_42_FHD
R621-*3
75K
TCON_42_FHD
R636-*3
1%
200K
TCON_42_FHD
R611-*3
1%
11K
1%
1%
TCON_42_FHD
R622-*3
220K
1%
1%
TCON_47_FHD_60_LAMP
R621-*4
11K
1%
1%
TCON_47_FHD_60_LAMP
R622-*4
30K
1%
1%
TCON_47_FHD_60_LAMP
R620-*4
51K
1%
1%
TCON_47_FHD_60_LAMP
R637-*4
270K
TCON_47_FHD_60_LAMP
R643-*4
1%
180K
1%
1%
TCON_47_FHD_60_LAMP
R635-*4
68K
1%
1%
TCON_47_FHD_60_LAMP
R636-*4
220K
TCON_47_FHD_60_LAMP
1%
R611-*4
51K
1%
1%
TCON_47_FHD
R620-*5
220K
1%
1%
TCON_47_FHD
R621-*5
11K
1%
1%
TCON_47_FHD
R622-*5
51K
1%
1%
TCON_47_FHD
R637-*5
270K
TCON_47_FHD
R643-*5
1%
75K
TCON_47_FHD
R636-*5
1%
180K
1%
1%
TCON_47_FHD
R635-*5
220K
TCON_47_FHD
1%
R611-*5
27K
1%
1%
TCON_55_FHD
R637-*6
150K
TCON_55_FHD
1%
R643-*6
180K
TCON_55_FHD
1%
R609-*6
68K
1%
1%
TCON_55_FHD
R610-*6
56K
TCON_55_FHD
1%
R611-*6
510K
1%
1%
TCON_55_FHD
R620-*6
27K
1%
1%
TCON_55_FHD
R622-*6
68K
1%
1%
TCON_55_FHD
R621-*6
150K
1%
1%
TCON_55_FHD
R635-*6
75K
TCON_55_FHD
1%
R636-*6
15K
1%
1%
TCON_55_FHD
R641-*6
27K
1%
1%
TCON_42_FHD
R637-*3
150K
TCON_42_FHD
R643-*3
1%
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.
1K
1%
1%
R601-*1
TCON_32_FHD
1K
1%
1%
R652-*1
TCON_32_FHD
1K
1%
1%
R602-*1
TCON_32_FHD
1K
1%
1%
TCON_37_FHD
R602-*2
1K
1%
1%
TCON_37_FHD
R601-*2
1K
1%
1%
TCON_42_FHD
R652-*3
1K
1%
1%
TCON_42_FHD
R602-*3
1.5K
5%
5%
TCON_37_FHD
R652-*2
1K
1%
1%
TCON_47_FHD
R602-*5
1K
1%
1%
TCON_47_FHD
R652-*5
1K
1%
1%
TCON_47_FHD
R601-*5
0
5%
5%
TCON_55_FHD
R652-*6
1K
1%
1%
TCON_42_FHD_60_LAMP
R602-*4
1K
1%
1%
TCON_42_FHD_60_LAMP
R652-*4
GP2_Saturn7M
15
T-CON Power Table
V e r . 1 . 2
VGH
VGL
VDD
HVDD
32_FHD
R640 OPEN
R611 OPEN
VGH
VGL
VDD
HVDD
37_FHD
VGH
VDD
42_FHD
VGL
R640 OPEN
HVDD
HVDD
VDD
R640 OPEN
47_FHD_60_LAMP
VGL
47_FHD
VGH
HVDD
VDD
VGL
R640 OPEN
VGH
VGH
HVDD
VDD
VGL
55_FHD
( W i t h o u t 6 0 H z L a m p )
( W i t h o u t 6 0 H z L a m p )
R640 OPEN
VCOM FEED BACK
VCOM FEED BACK
VCOM FEED BACK
R601 OPEN
VCOM FEED BACK
VCOM FEED BACK
R601 OPEN
R602 OPEN
VCOM FEED BACK
VGH
VGL
R601 OPEN
VDD
VCOM FEED BACK
42_FHD_60_LAMP
HVDD
SHEET7
SHEET7
SHEET7
SHEET7
SHEET7
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.
SPI_SCK
/FLASH_WP
0
R1402
0
OPT
R1401
/SPI_CS
4.7K
R1404
0 . 1 u F
C1401
+3.3V_Normal
+3.3V_Normal
KRC103S
Q1401
E
B
C
+3.3V_Normal
10K
R1403
33
R1405
SPI_SDO
SPI_SDI
MX25L8005M2I-15G
IC1401
S_FLASH
3
WP#
2
SO
4
GND
1
CS#
5
S I
6
SCLK
7
HOLD#
8
VCC
S - F l a s h ( 1 M B )
GP2_Saturn7M
V e r . 1 . 2
23
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