LG 42LK550 (CHASSIS:LA12B) Service Manual ▷ View online
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.
AUD_MASTER_CLK
C4937
0.01uF
0.01uF
C4906
33pF
33pF
OPT
C4912
0.1uF
16V
0.1uF
16V
C4904
33pF
33pF
OPT
R4926
3.3
3.3
C4903
33pF
33pF
OPT
AMP_RESET
+24V
SPK_L+
Amp_Mute_PDN
R4901
10K
R4923
3.3
3.3
C4926
10uF
35V
C4929
100pF
50V
100pF
50V
+3.3V_AU_AVDD
SCL3_3.3V
R4930
0
0
C4922
0.01uF
0.01uF
SPK_L-
C4923
0.033uF
50V
L4906
120-ohm
+3.3V_Normal
C4907
33pF
33pF
OPT
0.1uF
C4941
50V
C4939
0.01uF
0.01uF
C4935
0.33uF
50V
0.33uF
50V
C4931
0.33uF
50V
0.33uF
50V
R4914
33
R4913
33
R4904
2K
OPT
R4915
15K
C4940
0.01uF
0.01uF
50V
AMP_RESET
R4903
10K
+24V_AMP
+3.3V_DVDD
C4908
0.1uF
0.1uF
+24V_AMP
L4907
MLB-201209-0120P-N2
R4928
0
0
C4910
33pF
33pF
OPT
C4933
0.33uF
50V
0.33uF
50V
R4916
18K
1%
AUD_SCK
R4925
3.3
3.3
R4929
0
0
L4905
120-ohm
SDA3_3.3V
AMP_MUTE
SPK_R-
R4917
470
C4936
0.33uF
50V
0.33uF
50V
C4913 4700pF
SPK_L-
C
4
9
1
8
1
u
F
2
5
V
R4918
470
SPK_R+
R4927
0
0
SPK_OUTPUT_RESISTER
R4929-*1
CIS21J121
SPK_L+
SPK_R+
+3.3V_DVDD
C4905
0.1uF
0.1uF
R4910
0
C4902
1000pF
50V
1000pF
50V
OPT
+3.5V_ST
R4907
100
Q4901
2SC3052
E
B
C
C4915
0.047uF
C4911
0.047uF
C4927
100pF
50V
100pF
50V
C4930
100pF
50V
100pF
50V
C4921
0.01uF
0.01uF
R4902
33
R4911
0
C4901
1000pF
OPT
R4908
0
C4925
10uF
35V
R4921
18
1/16W
C4938
0.01uF
0.01uF
50V
C4924
0.033uF
50V
R4930-*1
CIS21J121
C4919
0.033uF
50V
50V
+24V_AMP
R4909
0
AUD_LRCK
R4924
3.3
3.3
C4909
33pF
33pF
OPT
C4932
0.33uF
50V
0.33uF
50V
R4920
18
1/16W
SPK_R-
AMP_RESET_N
C4916
2200pF
50V
R4912
10K
10K
OPT
R4919
18
1/16W
+3.3V_DVDD
R4922
18
1/16W
0.1uF
C4942
50V
Amp_Mute_PDN
C4914
4700pF
+3.3V_AU_AVDD
R4927-*1
CIS21J121
SPK_OUTPUT_BEAD
C4920
0.033uF
50V
C4934
0.33uF
50V
0.33uF
50V
AUD_LRCH
C4928
100pF
50V
100pF
50V
P4901
WAFER-ANGLE
1
2
3
4
R4928-*1
CIS21J121
C4917
0.1uF
0.1uF
R4906
0
0
R4905
0
OPT
L4902
NRS6045T100MMGK
10.0uH
L4903
NRS6045T100MMGK
10.0uH
L4904
NRS6045T100MMGK
10.0uH
L4901
NRS6045T100MMGK
10.0uH
IC4901
TAS5727
1
OUT_A
2
PVDD_A_1
3
PVDD_A_2
4
BST_A
5
NC_1
6
SSTIMER
7
NC_2
8
PBTL
9
AVSS
10
PLL_FLTM
11
PLL_FLTP
12
VR_ANA
13
AVDD
14
A_SEL_FAULT
15
MCLK
16
OSC_RES
17
DVSSO
18
VR_DIG
19
PDN
20
LRCLK
21
SCLK
22
SDIN
23
SDA
24
SCL
25
RESET
26
STEST
27
DVDD
28
DVSS
29
GND
30
AGND
31
VREG
32
GVDD_OUT_2
33
BST_D
34
PVDD_D_1
35
PVDD_D_2
36
OUT_D
37
PGND_CD_1
38
PGND_CD_2
39
OUT_C
40
PVDD_C_1
41
PVDD_C_2
42
BST_C
43
BST_B
44
PVDD_B_1
45
PVDD_B_2
46
OUT_B
47
PGND_AB_1
48
PGND_AB_2
49
[EP]
MAIN
Q4901
VERY CLOSE AMP IC
1ST : 0TRIY80001A 2ND : 0TR387500AA
SPEAKER_R
VERY CLOSE AMP IC
DUAL COMPONENT
This parts are Located
on AVSS area.
on AVSS area.
Place at Bottom
Separate DGND AND AVSS
SPEAKER_L
TAS5727
BCM35230
LV7 ATSC AMP
49
50
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.
AV2_CVBS_DET
CHBO_TS_SERIAL
5V_HDMI_4
SPK_R-_HOTEL
3D_SYNC
CHB_RESET
TW9910_RESET
SPK_R+_HOTEL
CHBO_TS_SYNC
CHBO_TS_VAL_ERR
CHBO_TS_CLK
TU_RESET_SUB
3D_GPIO_2
3D_SYNC_RF
SDA3_3.3V
3D_GPIO_1
3D_GPIO_0
SCL3_3.3V
M_REMOTE_RX
DC_MREMOTE
M_REMOTE_TX
M_RFModule_RESET
DD_MREMOTE
SCART1_Rout_N
SCART1_Lout_P
SC_ID
SC_RE2
SC_FB
DTV/MNT_V_OUT
SC_RE1
SC_CVBS_IN
SCART1_Lout_N
DTV_ATV_SELECT
INCM_VID_SC
SCART_MUTE
SCART1_Rout_P
SPK_R+_HOTEL
SPK_R-_HOTEL
BCM35230
LV7 ATSC
50
50
NON CHINA HOTEL
NON SCART
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.
FE_TS_DATA[2]
FE_TS_DATA[5]
FE_TS_DATA[0]
FE_TS_DATA[7]
FE_TS_DATA[4]
FE_TS_DATA[3]
FE_TS_DATA[6]
FE_TS_DATA[1]
C5123
0.1uF
16V
TS_VAL_ERR
R5108
4.7K
R5107
100K
OPT
R5104
100K
OPT
C5106
0.1uF
16V
16V
+3.3V_TU
C5117
0.1uF
16V
C5112
18pF
50V
18pF
50V
R5105
100
100
C5131
0.1uF
50V
0.1uF
50V
IF_N
R5112
82
82
R5101
75
OPT
C5128
10uF
10uF
10V
+3.3V_DE
C5118
2.2uF
16V
C5120
22uF
16V
+1.26V_TU
C5104
100uF
16V
16V
+3.3V_TU
C5102
0.1uF
16V
0.1uF
16V
OPT
IF_AGC
C5101
100pF
50V
100pF
50V
R5115
220
TU_CVBS
L5106
BLM18PG121SN1D
C5103
0.1uF
16V
0.1uF
16V
+5V_Normal
IF_P
TU_SIF
C5126
0.1uF
0.1uF
RF_SWITCH_CTL
IC5103
AP1117EG-13
ADJ/GND
OUT
IN
C5116
0.1uF
0.1uF
16V
R5109
470
+5V_TU
C5111
18pF
50V
18pF
50V
+3.3V_TU
C5129
0.1uF
0.1uF
+5V_TU
TU_TS_SYNC
R5110
0
OPT
R5103
0
OPT
L5103
BLM18PG121SN1D
L5105
MLB-201209-0120P-N2
C5114
0.1uF
16V
C5113
0.1uF
0.1uF
SDA0_3.3V
+3.3V_S_TU
R5102
0
OPT
SCL0_3.3V
S2_RESET
L5102
120-ohm
R5116
220
L5104
MLB-201209-0120P-N2
R5111
0
22uF
C5127
R5113
1K
OPT
RF_BOOSTER_CTL
R5106
1K
C5130
22uF
22uF
10V
C5105
100pF
50V
100pF
50V
TU_RESET
C5124
0.1uF
16V
C5109
0.1uF
16V
16V
+3.3V_DE
+1.26V_TU
+5V_TU
R5114
1K
OPT
+3.3V_TU
C5107
100pF
50V
100pF
50V
C5115
100pF
50V
+3.3V_Normal
C5119
2.2uF
16V
FE_TS_DATA[0-7]
C5122
22uF
16V
Q5102
MMBT3906(NXP)
E
B
C
RF_SWITCH_CTL_2
C5110
100uF
16V
16V
TU_TS_CLK
+5V_TU
C5121
22uF
16V
C5125
0.1uF
16V
Q5101
MMBT3906(NXP)
E
B
C
TU5101
UDA55AL
UDA55AL
NON_CHB_TUNER_V
14
+3.3V
13
+1.2V
5
AS
12
GND
11
VIDEO
2
NC_2
10
NC_3
4
NC[RF_AGC]
1
NC_1
17
DIF_1
9
SIF
8
NC(IF_TP)
3
+B[+5V]
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
19
SHIELD
TU5101-*1
UFA55AL
UFA55AL
NON_CHB_TUNER_H
14
+3.3V
13
+1.2V
5
AS
12
GND
11
VIDEO
2
NC_2
10
NC_3
4
NC[RF_AGC]
1
NC_1
17
DIF_1
9
SIF
8
NC(IF_TP)
3
+B[+5V]
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
19
SHIELD
R5117
220
R5118
4.7
4.7
L5101
BLM18PG121SN1D
C5132
0.1uF
16V
TU5101-*2
TDVJ-H101F
TDVJ-H101F
NON_CHB_TUNER_H_LGIT
14
3.3V
13
1.2V
5
AS
12
GND
11
VIDEO
2
BST_CNTL
10
NC
4
NC[RF_AGC]
1
ANT_PWR[OPT]
17
DIF_1
9
SIF
8
NC(IF_TP)
3
+B
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
19
SHIELD
DUAL COMPONENT
IC5103
close to TUNER
1ST : EAN54428101, 2ND : 0IPMG00048A
51
BCM35230
R1
R2
H/NIM (KOR/USA)
TUNER_NON CHB
VOUT = VREF *(1+R2/R1)
51
close to TUNER
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.
MDS62110209
M7-*5
GASKET_8.5T
MDS62110209
M3-*5
GASKET_8.5T
MDS62110209
M5-*5
GASKET_8.5T
MDS62110204
M11-*2
GASKET_5.5T
MDS62110204
M6-*2
GASKET_5.5T
MDS62110204
M3-*2
GASKET_5.5T
MDS62110209
M12-*5
GASKET_8.5T
MDS62110209
M10-*5
GASKET_8.5T
MDS62110204
M12-*2
GASKET_5.5T
MDS62110204
M8-*2
GASKET_5.5T
MDS62110204
M1-*2
GASKET_5.5T
MDS62110204
M4-*2
GASKET_5.5T
MDS62110204
M9-*2
GASKET_5.5T
MDS62110209
M6-*5
GASKET_8.5T
MDS62110209
M9-*5
GASKET_8.5T
MDS62110204
M7-*2
GASKET_5.5T
MDS62110209
M2-*5
GASKET_8.5T
MDS62110204
M2-*2
GASKET_5.5T
MDS62110209
M11-*5
GASKET_8.5T
MDS62110204
M10-*2
GASKET_5.5T
MDS62110204
M5-*2
GASKET_5.5T
MDS62110209
M8-*5
GASKET_8.5T
MDS62110209
M4-*5
GASKET_8.5T
MDS62110209
M1-*5
GASKET_8.5T
MDS62110205
M1-*4
GASKET_7.5T
MDS62110206
M1-*3
GASKET_6.5T
MDS62110208
M1
GASKET_4.5T
MDS62110210
M1-*1
GASKET_5.0T
MDS62110208
M2
GASKET_4.5T
MDS62110208
M3
GASKET_4.5T
MDS62110208
M5
GASKET_4.5T
MDS62110208
M6
GASKET_4.5T
MDS62110208
M4
GASKET_4.5T
MDS62110208
M11
GASKET_4.5T
MDS62110208
M10
GASKET_4.5T
MDS62110208
M12
GASKET_4.5T
MDS62110208
M8
GASKET_4.5T
MDS62110208
M9
GASKET_4.5T
MDS62110208
M7
GASKET_4.5T
MDS62110210
M2-*1
GASKET_5.0T
MDS62110210
M4-*1
GASKET_5.0T
MDS62110210
M3-*1
GASKET_5.0T
MDS62110210
M7-*1
GASKET_5.0T
MDS62110210
M6-*1
GASKET_5.0T
MDS62110210
M5-*1
GASKET_5.0T
MDS62110210
M8-*1
GASKET_5.0T
MDS62110210
M11-*1
GASKET_5.0T
MDS62110210
M10-*1
GASKET_5.0T
MDS62110210
M9-*1
GASKET_5.0T
MDS62110210
M12-*1
GASKET_5.0T
MDS62110206
M2-*3
GASKET_6.5T
MDS62110206
M4-*3
GASKET_6.5T
MDS62110206
M3-*3
GASKET_6.5T
MDS62110206
M8-*3
GASKET_6.5T
MDS62110206
M7-*3
GASKET_6.5T
MDS62110206
M6-*3
GASKET_6.5T
MDS62110206
M5-*3
GASKET_6.5T
MDS62110206
M12-*3
GASKET_6.5T
MDS62110206
M11-*3
GASKET_6.5T
MDS62110206
M10-*3
GASKET_6.5T
MDS62110206
M9-*3
GASKET_6.5T
MDS62110205
M2-*4
GASKET_7.5T
MDS62110205
M3-*4
GASKET_7.5T
MDS62110205
M4-*4
GASKET_7.5T
MDS62110205
M7-*4
GASKET_7.5T
MDS62110205
M5-*4
GASKET_7.5T
MDS62110205
M8-*4
GASKET_7.5T
MDS62110205
M6-*4
GASKET_7.5T
MDS62110205
M11-*4
GASKET_7.5T
MDS62110205
M9-*4
GASKET_7.5T
MDS62110205
M12-*4
GASKET_7.5T
MDS62110205
M10-*4
GASKET_7.5T
MDS61887710
M1-*6
GASKET_9.5T
MDS61887710
M2-*6
GASKET_9.5T
MDS61887710
M3-*6
GASKET_9.5T
MDS61887710
M4-*6
GASKET_9.5T
MDS61887710
M5-*6
GASKET_9.5T
MDS61887710
M6-*6
GASKET_9.5T
MDS61887710
M7-*6
GASKET_9.5T
MDS61887710
M8-*6
GASKET_9.5T
MDS61887710
M9-*6
GASKET_9.5T
MDS61887710
M10-*6
GASKET_9.5T
MDS61887710
M11-*6
GASKET_9.5T
MDS61887710
M12-*6
GASKET_9.5T
MDS62110213
M20
GASKET3.5T_HEATSINK
MDS62110213
M21
GASKET3.5T_HEATSINK
MDS62110213
M22
GASKET3.5T_HEATSINK
MDS62110213
M23
GASKET3.5T_HEATSINK
SMD GASKET
56
BCM35230
56
2010. 09. 18
SMD GASKET 5.5T
SMD GASKET 8.5T
SMD GASKET 6.5T
SMD GASKET 7.5T
SMD GASKET 4.5T
SMD GASKET 5.0T
SMD GASKET
SMD GASKET 9.5T
Click on the first or last page to see other 42LK550 (CHASSIS:LA12B) service manuals if exist.