LG LP62D Service Manual Download Page 1

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LCD TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : LP62D
FACTORY MODEL : 42LC2RH-ZH

MODEL : 42LC2R

website:http://biz.LGservice.com

e-mail:http://www.LGEservice.com/techsup.html

Summary of Contents for LP62D

Page 1: ...E MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LP62D FACTORY MODEL 42LC2RH ZH MODEL 42LC2RH website http biz LGservice com e mail http www LGEservice com techsup html ...

Page 2: ... 2 CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 11 TROUBLE SHOOTING 16 BLOCK DIAGRAM 23 EXPLODED VIEW 24 REPLACEMENT PARTS LIST 26 SVC SHEET ...

Page 3: ...et such as antennas terminals 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 i...

Page 4: ...vely obtain and wear a commercially available discharging 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 electrostatic charge buildup or exposure of the assembly 3 Use only a ground...

Page 5: ...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 replaced component and adjacent components and the circuit boa...

Page 6: ...on Safety CE IEC Specification EMC CE IEC SPECIFICATION NOTE Specifications and others are subject to change without notice for improvement 4 General TV Specification No Item Specification Remark 1 Video input applicable system PAL D K B G I NTSC M SECAM NTSC 4 43 2 Receivable Broadcasting System 1 PAL SECAM BG 2 PAL SECAM DK 3 PAL I I 4 SECAM L L only ZH 5 PAL N M 6 NTSC M only TH 3 RF Input Chan...

Page 7: ... the front polarizer Back Light 42 20CCFL No Parameter Symbol Value Unit Remark Min Typ Max 1 Contrast Ratio CR 300 400 Normal Mode 100IRE Full white window pattern APC Clear Dynamic CRD 700 1000 Normal Mode With AI 100IRE Full white window pattern APC Standard 2 Surface Luminance LWH 360 450 Cd m2 Normal Mode white 100IRE Full white window pattern APC Clear Dynamic 3 White Coordinate Normal X axi...

Page 8: ... R Input 12 Wired Control 1EA 13 Audio variable out 1EA 8 Chroma Brightness Module No Parameter Symbol Min Typ Max Unit Remark 1 Contrast Ratio CR 300 400 Normal Mode 100IRE Full white window pattern CRD With AI 700 1000 APC Clear Dynamic 2 Surface Luminance LWH 400 500 Cd m2 Normal Mode white 100IRE Full white window pattern APC Clear Dynamic 3 Luminance Variation 5WHITE 5P 1 3 4 Response Timer R...

Page 9: ...0P 3 720 x 576 31 25 50 00 27 000 SDTV 576P 4 1280 x 720 44 96 59 94 74 176 HDTV 720P 5 1280 x 720 45 00 60 00 74 250 HDTV 720P 6 1280 x 720 37 50 50 00 74 25 HDTV 720P 50Hz 7 1920 x 1080 33 72 59 94 74 176 HDTV 1080I 8 1920 x 1080 33 75 60 00 74 250 HDTV 1080I 9 1920 x 1080 28 125 50 00 74 250 HDTV 1080I 50Hz 8 Component Video Input Y PB PR No Resolution H freq kHz V freq kHz Pixel clock MHz Rema...

Page 10: ...0 12 1366 x 768 47 700 60 00 84 62 WXGA 42XGA 50 60 12 HDMI input DTV 13 Mechanical Specification No Resolution H freq kHz V freq kHz Pixel clock MHz Remarks 1 720 x 480 31 47 59 94 27 000 SDTV 480P 2 720 x 480 31 50 60 00 27 027 SDTV 480P 3 720 x 576 31 25 50 00 27 000 SDTV 576P 4 1280 x 720 44 96 59 94 74 176 HDTV 720P 5 1280 x 720 45 00 60 00 74 250 HDTV 720P 6 1280 x 720 37 50 50 00 74 25 HDTV...

Page 11: ...e same time Use the proper cables below for EDID Writing 4 1 EDID Data 4 1 1 ANALOG 256 Bytes BLOCK1 128BYTE 4 1 2 HDMI 256 Bytes BLOCK1 128BYTE BLOCK2 128BYTE Detail EDID Options are below a b c d e a Product ID b Serial No Controlled on production line c Month Year Controlled on production line ex Montly 03 03 Year 2005 0F d Model Name Monitor Name e Checksum Changeable by total EDID data 00 01 ...

Page 12: ...t 100 Color Bar Pattern Fig 2 5 2 1 Method of Auto Component Color Balance 1 Input the Component 720p 100 Color Bar MSPG 925FA model 217 pattern 33 signal into Component ZH component TH MH component 1 or 2 2 Set the PSM to Standard mode in the Picture menu 3 Press the INSTART key on R C for adjustment 4 Press the Vol key to operate the set then it becomes automatically 5 Auto RGB OK means the adju...

Page 13: ...stment mode by pressing the INSTART key twice White Balance on R C 7 Stick sensor to center of the screen and select each items Red Green Blue Gain and Offset using CH key on R C 8 Adjust Only High Light with R Gain B Gain using VOL key on R C 9 Adjust it until color coordination becomes as below Initially R G B gain and R G B offset values are fixed as below Red Gain 82 Green Gain 80 Blue Gain 86...

Page 14: ...me None 8 Picture PSM Dynamic Dynamic Contrast 100 Brightness 50 Colour 50 Sharpness 50 CSM Normal XD Auto Advanced Reset 9 Sound SSM Flat Off AVL Off Balance 0 50 50 Speaker On 10 Time Clock User control Off time Off On time Off Auto sleep Off 11 Special Language English Area management Child Lock Off Set ID 1 XD Demo To start 12 Screen Auto config Manual config XGA VGA mode Variable by each mode...

Page 15: ...put To check the front AV To move channel up down or to select a function displayed on the screen To adjust the volume or accurately control a specific function To set a specific function or complete setting To move the channel down in the PIP screen To use as a red key in the teletext mode To move the channel in the PIP screen To use as a green key in the teletext mode To switch between the main ...

Page 16: ...e output circuit Yes No Yes No No No Doesn t the screen whole come out It is identical with power off condition Is the Interface signal operated Doesn t the 5V monitor signal come out Doesn t the VSC signal RL_ON come out Doesn t the VSC Low pressure output come out Doesn t the Vs Va voltage output come out Doesn t the St by 5V signal come out Doesn t the VSC signal Vs ON come out When remove the ...

Page 17: ...ord No No No No Yes Is the Line Filter and PSU connected Connect Cable SC101 Yes Is the Fuse F101 of PSU is normal Replace Fuse Yes Is it connect that PSU and 13Pin cable in VSC board After remove the cable connect to Power Board except the CN101 connection cable authorizes the AC voltage marking on manual When ST BY 5V does not operate replace Power Board Connect Cable Yes ...

Page 18: ...o No No Is output the normality Low High voltage except stand by 5V No Inverter_On Signal is High of 5 th pin in P1000 on Main board Yes On Yes Is the link cable normal 1 Check the Inverter connector 2 Check the LCD Module Yes 1 Check the Main Board 1 Reconnect the link cable in P804 No 1 Check the Main board 1 Change the Power Board 1 Change the Main Board Yes Is the Power Board normal Yes Is the...

Page 19: ...Replace VSC B D No No Yes Replace Ctrl Board in Plasma panel No Replace LCD Module No Yes Yes Is the LCD Module normal Yes Plasma LCD TV No Cable inserts well No Replace FIL8668 IC IC800 2 3 In case of occur strange screen into specific mode 2 3 1 In case of doesn t display the OSD 1 Symptom 1 LED is White 2 The minute discharge work continuously 2 Check follow ...

Page 20: ...uble Window if it display normally Re Check it Swap 3 In case of unusual situation from RF mode Is the Tuner normal No Yes Yes Cable inserts well Replace Tuner Replace IC300 Is the Tuner Cable connected well No Is the Input voltage IIC Communication and HV sync normal No No Is normal the Input voltage IIC Communication and CVBS output No No Is the IC300 normal Replace IC800 No Is the Input voltage...

Page 21: ...HV sync normal No Is the IC1200 normal Replace IC800 No Is the Input voltage IIC Communication and HV sync normal No Is the IC800 normal Replace IC800 No Is the Input voltage IIC Communication and HV sync normal No Is the IC800 normal Yes Replace IC300 No Is the Input voltage IIC Communication and HV sync normal No Is the IC300 normal Replace IC800 No Is the Input voltage IIC Communication and HV ...

Page 22: ... IC300 Replace VSC B D Set on speaker in menu Download the EDID data Check the speaker cable No Only RF is no sound Check the Tuner In Out No No No Replace IC402 No Is the Speaker on in Menu Yes No No Check the signal after IC300 refer to circuit diagram Is the output 52nd 53rd of IC300 normal Yes Yes Yes Yes Is the speaker cable normal Yes Yes Yes Yes IC400 operate normally IC401 operate normally...

Page 23: ...BLOCK DIAGRAM 23 ...

Page 24: ... 24 EXPLODED VIEW 010 020 100 120 130 140 150 030 040 090 080 070 110 061 061 060 050 ...

Page 25: ...r Tweeter D013d02k1400 ND 15W 8OHM 84DB 0HZ 50 X 39 6 X 12 4 LUG EBR30937701 PCB Assembly Sub SUB T T LP61C 42LC2RH ZH ALEULFX CLOCK BOARD EBR30798701 PCB Assembly Sub 1234567 SUB T T LP62A 37 42LC2RH ZH ALEULFX PREAMP LED LC 35519K0030B Cover Assembly 42LC2 STAND 35509K0220B SUPPORT 49519S0036C Plate Assembly FRAME MAIN 42LC2R ZH 31419SNJ81A Chassis Assembly SUB LA51D AC INLET ASSY 6709900017B SM...

Page 26: ...DC MVK6 3TP16VC47M 47uF 20 16 C1158 0CE476WF6DC MVK6 3TP16VC47M 47uF 20 16 C1207 0CE476SF6DC VMV476M016S0ANC010 47uF 20 C1222 0CE106SH6DC VMV106M025S0ANB010 10uF 20 C1226 0CE106SH6DC VMV106M025S0ANB010 10uF 20 C1244 0CE106SH6DC VMV106M025S0ANB010 10uF 20 C1403 0CH8106J691 MVK5 0TP35VC10M 10uF 20 35 C1460 0CE106SH6DC VMV106M025S0ANB010 10uF 20 C1468 0CE106SH6DC VMV106M025S0ANB010 10uF 20 C148 0CE22...

Page 27: ...50V C1066 0CK104CK56A 0603B104K500CT 100nF 10 50 C1068 0CK104CK56A 0603B104K500CT 100nF 10 50 DATE 2006 05 30 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C1073 0CK104CK56A 0603B104K500CT 100nF 10 50 C1074 0CK104CK56A 0603B104K500CT 100nF 10 50 C1075 0CK104CK56A 0603B104K500CT 100nF 10 50 C1076 0CK104CK56A 0603B104K500CT 100nF 10 50 C1077 0CK104CK56A 0603B104K500CT 100nF 10 50 C1078 0CK103CK56A 0...

Page 28: ...K41A C1608C0G1H101JT 100pF 5 50 C225 0CK273CK56A 0603B273K500CT 27nF 10 50V C226 0CK103CK56A 0603B103K500CT 10nF 10 50V DATE 2006 05 30 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C229 0CK104CK56A 0603B104K500CT 100nF 10 50 C231 0CK273CK56A 0603B273K500CT 27nF 10 50V C233 0CC271CK41A C1608C0G1H271JT 270pF 5 50 C315 0CK103CK56A 0603B103K500CT 10nF 10 50V C320 0CK103CK56A 0603B103K500CT 10nF 10 50...

Page 29: ...CK103CK56A 0603B103K500CT 10nF 10 50V C951 0CK104CK56A 0603B104K500CT 100nF 10 50 DATE 2006 05 30 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C109 0CC221CK41A C1608C0G1H221JT 220pF 5 50 C110 0CC221CK41A C1608C0G1H221JT 220pF 5 50 C111 0CK103CK56A 0603B103K500CT 10nF 10 50V C112 0CK102CK56A 0603B102K500CT 1nF 10 50V C113 0CK103CK56A 0603B103K500CT 10nF 10 50V C114 0CK102CK56A 0603B102K500CT 1nF 1...

Page 30: ...Z250CT 470nF 20TO C441 0CK474CH94A 0603F474Z250CT 470nF 20TO C442 0CK474CH94A 0603F474Z250CT 470nF 20TO C457 0CK332CK56A C1608X7R1H332KT 3 3nF 10 5 DATE 2006 05 30 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C458 0CK332CK56A C1608X7R1H332KT 3 3nF 10 5 C459 0CK332CK56A C1608X7R1H332KT 3 3nF 10 5 C462 0CK332CK56A C1608X7R1H332KT 3 3nF 10 5 C494 0CK104CK56A 0603B104K500CT 100nF 10 50 C511 0CK104CK5...

Page 31: ...002 0IMCRFA010A KA7809R 11 5TO24V 9V 150W D IC900 0IMMRAL016D AT49BV160C 70TU 16MBIT 1MX1 DATE 2006 05 30 S AL LOC NO PART NO DESCRIPTION SPECIFICATION L1000 6140VB0004B LN 15A1 26uH 12X9MM LEA L1101 6140VB0004B LN 15A1 26uH 12X9MM LEA L1105 6140VB0004B LN 15A1 26uH 12X9MM LEA L1106 6140VB0004B LN 15A1 26uH 12X9MM LEA L1107 6140VB0004B LN 15A1 26uH 12X9MM LEA L1110 6140VB0004B LN 15A1 26uH 12X9MM ...

Page 32: ...SFET 10V IC1203 0TR830009BA BSS83 N CHANNEL MOSFET 10V IC1204 0TR830009BA BSS83 N CHANNEL MOSFET 10V DATE 2006 05 30 S AL LOC NO PART NO DESCRIPTION SPECIFICATION IC1006 0TF492509AA SI4925DY P CHANNEL 30V 2 Q1202 0TF492509AA SI4925DY P CHANNEL 30V 2 Q105 0TR387500AA 2SC3875S ALY NPN 5V 60V 50 Q106 0TR387500AA 2SC3875S ALY NPN 5V 60V 50 Q107 0TR102009AM KRA102S PNP 30V 50V 0 Q201 0TR387500AA 2SC387...

Page 33: ...OHM 5 1 10W R1847 0RJ0332D677 MCR03EZPJ330 33OHM 5 1 10W R1848 0RJ0332D677 MCR03EZPJ330 33OHM 5 1 10W DATE 2006 05 30 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R1849 0RJ0332D677 MCR03EZPJ330 33OHM 5 1 10W R1850 0RJ0332D677 MCR03EZPJ330 33OHM 5 1 10W R1851 0RJ0332D677 MCR03EZPJ330 33OHM 5 1 10W R1852 0RJ0332D677 MCR03EZPJ330 33OHM 5 1 10W R1853 0RJ0332D677 MCR03EZPJ330 33OHM 5 1 10W R1854 0RJ03...

Page 34: ... 100OHM 5 1 10 R523 0RJ1000D677 MCR03EZPJ101 100OHM 5 1 10 R533 0RJ0000D677 MCR03EZPJ000 0OHM 5 1 10W DATE 2006 05 30 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R534 0RJ4701D677 MCR03EZPJ472 4 7KOHM 5 1 1 R540 0RJ0000D677 MCR03EZPJ000 0OHM 5 1 10W R604 0RJ4701D677 MCR03EZPJ472 4 7KOHM 5 1 1 R605 0RJ4700D677 MCR03EZPJ471 470OHM 5 1 10 R606 0RJ0000D677 MCR03EZPJ000 0OHM 5 1 10W R809 0RJ1000D677 M...

Page 35: ...RJ1002D677 MCR03EZPJ103 10KOHM 5 1 10 R1016 0RJ1002D677 MCR03EZPJ103 10KOHM 5 1 10 DATE 2006 05 30 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R1017 0RJ1002D677 MCR03EZPJ103 10KOHM 5 1 10 R1019 0RJ1002D677 MCR03EZPJ103 10KOHM 5 1 10 R1020 0RJ1002D677 MCR03EZPJ103 10KOHM 5 1 10 R1021 0RJ2002D677 MCR03EZPJ203 20KOHM 5 1 1 R1100 0RJ1002D677 MCR03EZPJ103 10KOHM 5 1 10 R1101 0RJ1201D677 MCR03EZPJ122 ...

Page 36: ...R03EZPJ101 100OHM 5 1 10 R362 0RJ1000D677 MCR03EZPJ101 100OHM 5 1 10 R371 0RJ5600D677 MCR03EZPJ561 560OHM 5 1 10 DATE 2006 05 30 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R372 0RJ0472D677 MCR03EZPJ470 47OHM 5 1 10W R376 0RJ3901D677 MCR03EZPJ392 3 9KOHM 5 1 1 R400 0RJ0000D677 MCR03EZPJ000 0OHM 5 1 10W R410 0RJ0622D677 MCR03EZPJ620 62OHM 5 1 10W R411 0RJ2402D677 MCR03EZPJ243 24KOHM 5 1 10 R412 0...

Page 37: ...R10EZHJ200 20OHM 5 1 8W R2803 0RJ1002D677 MCR03EZPJ103 10KOHM 5 1 10 R1022 0RJ1001D677 MCR03EZPJ102 1KOHM 5 1 10W R1023 0RJ1002D677 MCR03EZPJ103 10KOHM 5 1 10 R1201 0RJ1002D677 MCR03EZPJ103 10KOHM 5 1 10 DATE 2006 05 30 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R1207 0RJ1001D677 MCR03EZPJ102 1KOHM 5 1 10W R1208 0RJ1001D677 MCR03EZPJ102 1KOHM 5 1 10W R1209 0RJ2001D677 MCR03EZPJ202 2KOHM 5 1 10W...

Page 38: ... R102 0RH0000D622 MCR10EZHJ000 0OHM 5 1 8W 2 R103 0RH0000D622 MCR10EZHJ000 0OHM 5 1 8W 2 R104 0RH0000D622 MCR10EZHJ000 0OHM 5 1 8W 2 R105 0RH4700D622 MCR10EZHJ471 470OHM 5 1 8W R106 0RH4700D622 MCR10EZHJ471 470OHM 5 1 8W C2001 0CH3104K566 0805B104K500CT 100nF 10 50 C2003 0CH3104K566 0805B104K500CT 100nF 10 50 C2007 0CH3104K566 0805B104K500CT 100nF 10 50 C2010 0CH6221K416 C2012C0G1H221JT 220pF 5 50...

Page 39: ...Jun 2006 Printed in Korea P NO MFL30105533 ...

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