DOWNLOAD LG 42LH40ED / 42LH45ED (CHASSIS:LJ92J) Service Manual ↓ Size: 5.93 MB | Pages: 76 in PDF or view online for FREE

Model
42LH40ED 42LH45ED (CHASSIS:LJ92J)
Pages
76
Size
5.93 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42lh40ed-42lh45ed-chassis-lj92j.pdf
Date
PREV: LG 42LH40 (CHASSIS:LA92G) Service Manual

LG 42LH40ED / 42LH45ED (CHASSIS:LJ92J) Service Manual ▷ View online

Y
N
Y
Check CVBS Signal
C1007
N
Replace one of 
R1151/Q1106/R1149/C1007
& Recheck
Y
Check SIF Signal
C1015
N
Replace CXA2069(IC1102)
& Recheck
Y
Check TP Clock, Data, Sync
R1313/R1305/R1307
N
Re-Download PLD(IC1302) or
Replace it
Y
N
Y
Check Digital TV recording
Follow Digital TV recording fail 
trouble shooting
Check 3.3V voltage level
at L1002/L1004
16. Analog TV Recording Fail Trouble Shooting
N
Follow procedure analog TV 
video/audio trouble shooting
Check video/audio output
Check CVBS Signal
CXA2069(IC1102) #41 Pin
Replace one of 
L507/L518/C510/C549/Q501/Q503
IC503/C1015 & Recheck
N
Replace it
Y
Check 2.6V voltage level
at L820
N
Replace one of
L821/Q804/L820
Y
Check 1.2V voltage level
at 
L1000/L1001/L1003/L1005/L1006
N
Replace It
Y
N
Y
Maybe BCM3556(IC100) has some 
problems. Replace It.
Maybe IC1000 has some problems.
Replace It.
Reburn or replace IC1303
N
Replace It
Check 54MHz Clock
at X1000
Check Signal Level 5V
at R1022
MPEG_TS
DDR2
256MB
DDR2
256MB
BCM3556
(400M MIPS)
BCM3556
(400M MIPS)
1080P
LVDS
(Front-end)
(External Input)
EXT_IN
HDMI0_BCM
CVBS_LIVE
TP1
CVBS1/
SIF1
Ca
ble
ISDB-T/
PAL/NTSC
(System + DVR + Scalar)
(Analog DVR)
CVBS2/
SIF2
ISDB-T/
PAL/NTSC
Serial
TP1
Serial
TP2
I2S_BCM
NTP3100L
NTP3100L
CVBS1
CVBS2
CVBS_LIVE
CVBS/Y_DVR
COMP1_LR
COMP2_LR
RGB_LR
2069_L/R_OUT1
CXA2069
CXA2069
2069_L/R_OUT2
EXT_IN
HDMI0_BCM
AV1
AV2
NANDFlash
128MB
NANDFlash
128MB
(Etc)
SW
SW
SIF2
SIF1
SPI BUS
USB2.0
SPDIF
SIF_DVR
SIF_LIVE
SIF_LIVE
2069_L/R_OUT1
TP2
I2S_BCM
SPIF225A
SPIF225A
HDD
HDD
CVBS/Y_DVR
SIF_DVR
2069_L/R_OUT2
SAA7164
SAA7164
MPEG_TS
DDR1
256Mb
DDR1
256Mb
Flash
256KB
Flash
256KB
CPLD
CPLD
Parallel TS
Serial
I2C
MSPI
TDA9996
TDA9996
(Comp1/2, RGB)
TU_CVBS_DVR
TU_CVBS_DVR
HDMI4
HDMI2
HDMI1
SIDE HDMI_PORT4
UI_HW_PORT1
UI_HW_PORT2
RMX
BCM_SPI_CSb/
BCM_SPI_MISO
TP REMUX PORT
BCM_SPI_MOSI/
BCM_SPI_SCK
MNT_VOUT_DVR
MNT_VOUT_DVR
MONITOR_LR+/-_OUT
AMP
AMP
MNT_LOUT
MNT_ROUT
MNT_L/ROUT
Not Stuffed
17. AV Video Recording Fail Trouble Shooting
Y
N
Y
Check CVBS Signal
C1070
N
Replace one of 
R1150/Q1105/R1145/C1070
& Recheck
Y
Check SIF Signal
C1015
N
Replace CXA2069(IC1102)
& Recheck
Y
N
Y
N
Y
Check Digital TV recording
Follow Digital TV recording fail 
trouble shooting
Check 3.3V voltage level
at L1002/L1004
N
Follow procedure AV video/audio 
trouble shooting
Check video/audio output
Check CVBS Signal
CXA2069(IC1102) #44 Pin
Replace one of 
L507/L518/C510/C549/Q501/Q503
IC503/C1015 & Recheck
N
Replace it
Y
Check 2.6V voltage level
at L820
N
Replace one of
L821/Q804/L820
Check 1.2V voltage level
at 
L1000/L1001/L1003/L1005/L1006
N
Replace It
Y
N
Y
Maybe BCM3556(IC100) has some 
problems. Replace It.
Maybe IC1000 has some problems.
Replace It.
Reburn or replace IC1303
N
Replace It
Check 54MHz Clock
at X1000
Check Signal Level 5V
at R1022
17. AV Video Recording Fail Trouble Shooting
Check Signal
CXA2069(IC1102) #43, #45 Pin
Check Signal
R1008/R1009
N
Replace one of
Q1107/Q1108/C1035/
C1037/R1008/R1009 & Recheck
Replace IC1102 & Recheck
Y
Y
18. Digital TV Video Trouble Shooting while recording (Watch & Record)
MPEG_TS
DDR2
256MB
DDR2
256MB
BCM3556
(400M MIPS)
BCM3556
(400M MIPS)
1080P
LVDS
(Front-end)
(External Input)
EXT_IN
HDMI0_BCM
CVBS_LIVE
TP1
CVBS1/
SIF1
Ca
ble
ISDB-T/
PAL/NTSC
(System + DVR + Scalar)
(Analog DVR)
CVBS2/
SIF2
ISDB-T/
PAL/NTSC
Serial
TP1
Serial
TP2
I2S_BCM
NTP3100L
NTP3100L
CVBS1
CVBS2
CVBS_LIVE
CVBS/Y_DVR
COMP1_LR
COMP2_LR
RGB_LR
2069_L/R_OUT1
CXA2069
CXA2069
2069_L/R_OUT2
EXT_IN
HDMI0_BCM
AV1
AV2
NANDFlash
128MB
NANDFlash
128MB
(Etc)
SW
SW
SIF2
SIF1
SPI BUS
USB2.0
SPDIF
SIF_DVR
SIF_LIVE
SIF_LIVE
2069_L/R_OUT1
TP2
I2S_BCM
SPIF225A
SPIF225A
HDD
HDD
CVBS/Y_DVR
SIF_DVR
2069_L/R_OUT2
SAA7164
SAA7164
MPEG_TS
DDR1
256Mb
DDR1
256Mb
Flash
256KB
Flash
256KB
CPLD
CPLD
Parallel TS
Serial
I2C
MSPI
TDA9996
TDA9996
(Comp1/2, RGB)
TU_CVBS_DVR
TU_CVBS_DVR
HDMI4
HDMI2
HDMI1
SIDE HDMI_PORT4
UI_HW_PORT1
UI_HW_PORT2
RMX
BCM_SPI_CSb/
BCM_SPI_MISO
TP REMUX PORT
BCM_SPI_MOSI/
BCM_SPI_SCK
MNT_VOUT_DVR
MNT_VOUT_DVR
MONITOR_LR+/-_OUT
AMP
AMP
MNT_LOUT
MNT_ROUT
MNT_L/ROUT
Not Stuffed
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