LG 40LH5300 Service Manual Download Page 2

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LGE Internal Use Only

Only for training and service purposes

CONTENTS

CONTENTS .............................................................................................. 2

SAFETY PRECAUTIONS ........................................................................ 3

SERVICING PRECAUTIONS ................................................................... 4

SPECIFICATION ...................................................................................... 6

ADJUSTMENT INSTRUCTION ............................................................... 8

TROUBLE SHOOTING GUIDE ............................................................... 14

BLOCK DIAGRAM ................................................................................. 19

EXPLODED VIEW .................................................................................. 20

Summary of Contents for 40LH5300

Page 1: ...P NO MFL69584202 1604 REV00 CHASSIS LA68H MODEL 40LH5300 40LH5300 UA CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL LED TV SERVICE MANUAL Internal Use Only ...

Page 2: ...Electronics Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 8 TROUBLE SHOOTING GUIDE 14 BLOCK DIAGRAM 19 EXPLODED VIEW 20 ...

Page 3: ...inals etc to be sure the set is safe to operate without damage of electrical shock Leakage Current Cold Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed m...

Page 4: ...ctrostatic charge on your body by touching a known earth ground Alter natively obtain and wear a commercially available discharg ing wrist strap device which should be removed to prevent potential shock reasons prior to applying power to the unit under test 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent e...

Page 5: ...he solder joints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp the leads of replacement component around notch at stake top 3 Solder the connections CAUTION Maintain original spacing between the replace...

Page 6: ...ccordance with BOM 5 The receiver must be operated for about 5 minutes prior to the adjustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC 4 Model General Specification No Item Specification Remarks 1 Receiving System ATSC NTSC M 64 QAM 256 QAM 2 Available Channel 1 VHF 02 13 2 UHF 14 69 3 DTV 02 69 4 CATV 01 135 5 C...

Page 7: ...480P 2 640 480 31 5 60 00 25 125 SDTV 480P 3 720 480 15 73 59 94 13 500 SDTV 480I Spec Out Just Display 4 720 480 15 75 60 00 13 514 SDTV 480I Spec Out Just Display 5 720 480 31 47 59 94 27 00 SDTV 480P 6 720 480 31 5 60 00 27 027 SDTV 480P 7 1280 720 44 96 59 94 74 176 HDTV 720P 8 1280 720 45 60 00 74 25 HDTV 720P 9 1920 1080 33 72 59 94 74 176 HDTV 1080I 10 1920 1080 33 75 60 00 74 25 HDTV 1080I...

Page 8: ...a period of 20 minutes or longer especially where W B scale is strong Digital pattern 13ch and or Cross hatch pattern 09ch there can some afterimage in the black level area 3 Adjustment items 3 1 Main PCBA Adjustments 1 ADC adjustment ADC adjustment is OTP Auto ADC 2 EDID download HDMI Above adjustment items can be also performed in Final Assembly if needed Both Board level and Final assembly adju...

Page 9: ... is displayed 5 If Download is failure Re try downloads Caution When EDID Download must remove HDMI Cable 6 EDID Write confirmation 4 2 5 Models for EDID Data 4 2 6 EDID DATA 8BIT FHD AC3 Checksum 4 3 Tool Option Input Input Model Tool Option according to BOM Region FHD 8bit HDMI 2ea North America AC3 43 49LF5400 UE 40LH5300 UA EDID D L PCM HDMI1 OK HDMI2 OK 0 1 2 3 4 5 6 7 8 9 A B C D E F 00 00 F...

Page 10: ...te pattern 5 1 2 Equipment 1 Color Analyzer CA 210 NCG CH 9 WCG CH12 LED CH14 2 Adj Computer During auto adj RS 232C protocol is needed 3 Adjust Remocon 4 Video Signal Generator MSPG 925F 720p 204 Gray Model 217 Pattern 49 Only when internal pattern is not available Color Analyzer Matrix should be calibrated using CS 1000 5 1 3 Equipment connection When you connect the RS232 to set Phone jack plea...

Page 11: ...he G How to adjust 1 Fix G gain at least 172 Adjust R B Gain In Case of Mostly Blue Gain Saturation 2 When R or B Gain 255 Release Fixed G Gain and Readjust CASE Medium Warm First adjust the coordinate far away from the target value x y 1 x y target 1 Decrease the R G 2 x y target 1 First decrease the B gain 2 Decrease the one of the others 3 x target y target 1 First decrease B so make y a little...

Page 12: ...nsertion condition 6 2 GND HI POT auto check 1 Pallet moves in the station POWER CORD AV CORD is tightly inserted 2 Connect the AV JACK Tester 3 Controller GWS103 4 on 4 GND Test Auto If Test is failed Buzzer operates If Test is passed execute next process Hi pot test Remove A V CORD from A V JACK BOX 5 HI POT test Auto If Test is failed Buzzer operates If Test is passed GOOD Lamp on and move to n...

Page 13: ...tically Download 3 Show the message Copying files from memory 4 Updating is starting 5 Updating Completed the TV will restart automatically 6 If your TV is turned on check your updated version and Tool option explain the Tool option next stage If downloading version is more high than your TV have TV can lost all channel data In this case you have to channel recover if all channel data is cleared y...

Page 14: ...LVDS Output Check DRV ON Control P200 11pin High Change Module Check TCON Module Panel_VCC Q205 13 2V Check DC Output Voltage IC202 1 15V 5V IC200 1 8V Q204 3 3V NO NO NO NO NO NO NO NO OK OK NO OK Check 12pin Power connector Main B D 3 3V Line Short Check Re download software Replace X100 Replace Mstar IC102 or Main Board Check PSU Replace Q205 Replace IC402 IC403 IC404 Q403 Main B D 13 2V Line S...

Page 15: ...upported Check AV Cable for damage for damage or open conductor Check Tuner 3 3V Power L500 Check JK401 CVBS Signal Line R120 Check IF_P N Signal TU501 7 8 Pin Check CVBS_DET Signal Check Mstar LVDS Output Check Mstar LVDS Output NO NO NO NO NO NO Replace L500 Replace Jack Bad Tuner Replace Tuner Replace AR401 or R110 Replace Mstar IC102 or Main Board Replace Mstar IC102 or Main Board OK OK OK OK ...

Page 16: ...place AR401or R109 Replace Mstar IC101 or Main Board OK OK OK OK 5 HDMI Video Check input signal format Is it supported Check HDMI Cable conductors for damage or open conductor Check EDID AR102 AR101 AR410 AR411 I2C Signal Check JK403 JK404 Check HDMI_DET HPD Check HDMI Signal Check Mstar LVDS Output NO NO NO NO NO NO Replace the defective IC or re download EDID data Replace Jack Replace R418 R410...

Page 17: ...Mstar AUDIO_MASTER_CLK R148 Check Connector P5600 Check speaker resistance and connector damage Check Output Signal P5600 6 7 38 pin Check Mstar I2S Output IC5600 20 21 22 Pin OFF NO NO NO NO NO NO NO Toggle the Menu Replace Amp IC IC5600 Check signal line Or replace Mstar IC101 Replace Mstar IC101 or Main Board Replace connector if found to be damaged Replace speaker Replace Audio AMP IC IC5600 C...

Page 18: ... Pin Follow procedure 7 All source audio trouble shooting guide NO NO NO Replace L500 Replace AR500 R502 R503 Bad Tuner Replace Tuner OK OK OK OK Check AV Cable for damage for damage or open conductor Check Component Cable for damage or open conductor Check JK401 Signal Line R409 R406 Check JK401 Signal Line R409 R406 Follow procedure 7 All source audio trouble shooting guide Follow procedure 7 Al...

Page 20: ...ical and mechanical parts in this chassis have special safety related characteristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock Fire or other Hazards Do not modify the original design without permission of manufacturer IMPORTANT S...

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LG 40LH5300, Service Manual, Page: 2 / 21

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