LG 50PX4DR, Service Manual

Page 1: ... CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS AF 05FA MODEL 50PX4DR 50PX4DR UA CANADA http biz lgservice com USA http www lgservice com http lgservice com techsup html POWER TV GUIDE ...

Page 2: ...to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed metallic parts such as antenna terminals phone jacks etc If the exposed metallic part has a return path to the chassis the measured resistance should be between 1MΩ and 5 2MΩ When the exposed metal has no return path to the chassis the reading must be infinite An other abnormality exists that must be correct...

Page 3: ...TION OF CONTROLS 4 SPECIFICATIONS 8 ADJUSTMENT INSTRUCTIONS 9 PRINTED CIRCUIT BOARDS 18 BLOCK DIAGRAM 23 EXPLODED VIEW 26 EXPLODED VIEW PARTS LIST 27 REPLACEMENT PARTS LIST 28 SCHEMATIC DIAGRAM TABLE OF CONTENTS ...

Page 4: ...te Control Sensor Power Standby Indicator Blinks orange in standby mode blinks green when the TV is turned on POWER Button Front Panel Controls Front Panel Controls W W This is a front panel of 50PX4DR series TVs This is a simplified representation of front panel Here shown may be somewhat different from your TV Controls Controls DESCRIPTION OF CONTROLS ...

Page 5: ...t Digital Audio DVI Digital Visual Interface Component2 Input Digital Audio Output Connect digital audio from various types of equipment Note In standby mode these ports will not work DVD DTV Input Component 1 2 Connect a component video audio device to these jacks Monitor Output Connect a second TV or Monitor Remote Control Port Connect your wired remote control here S Video Input Connect S Video...

Page 6: ...Changes the aspect ratio POWER Turns your TV or any other programmed equipment on or off depending on mode CC Select a closed caption Off CC1 4 Text1 4 THUMBSTICK Up Down Left Right ENTER Allows you to navigate the on screen menus and adjust the system settings to your pref erence CHANNEL UP DOWN Selects available channels found with EZ scan PAGE UP PAGE DOWN Moves from one full set of screen info...

Page 7: ...sequence Switches the video window locking or unlocking in the Listings Grid PIPCH PIPCH Changes to the next higher lower PIP channel PIP INPUT Selects the input source for the sub pic ture in PIP Twin picture mode SWAP Exchanges the main sub images in PIP Twin picture mode EZ PIC Adjusts the factory preset picture depending on the viewing environment ADJUST Adjusts screen position size and phase ...

Page 8: ... 0 40 C Less than 80 6561 feet 2000m 55 9 1420 35 889 14 356 8 137 8 62 5 65 6 1666 40 2 1022 17 434 206 8 93 8 Width inches mm Height inches mm Depth inches mm Weight pounds kg Resolution Power requirement Television System Program Coverage External Antenna Impedance Color Operating Temperature Range Operating Humidity Range Maximum Elevation 50PY2DR UA 60PY2DR UA 1366 x 768 Dot 57 5 1461 32 9 83...

Page 9: ...Y Key Display the 100 Full White Pattern Set is activated HEAT RUN without signal generator in this mode If you turn on a still screen more than 20 minutes Especially Digital pattern 13 CH Cross Hatch Pattern an afterimage may occur in the black level part of the screen 3 EPLD Download 1 Test Equipment PC Jig for download 2 Connect the power of VSC B D 3 Execute download program iMPACK of PC 4 Aft...

Page 10: ...ownload 5 1 Preparation for Adjustment 1 As shown below connect the MPLAB ICD2 equipment PC and Digital Connector 2 Turn on the MPLAB ICD2 POWER Supply 3 After turn on the PC and MONITOR select the MPLAB IDE from the screen 5 2 Adjustment Sequence 1 When the program is executed select the MPLAB ICD2 from Programmer Select Programmer 2 Select Configure Select Device 13V 5V GND Data Clock Digital Bo...

Page 11: ...8 The execution of process 6 is convenient when using the short cut icon 6 POD Certificate Download IEEE1394 DTCP Download 6 1 Preparation for Adjustment 1 Connect the MEMORY JIG and PC 2 Turn on the JIG MAIN POWER SWITCH 3 After turn on the PC and MONITOR execute the Certificate Downloader v1 4 from the screen 6 2 Adjustment Sequence 1 After open the Certificate Downloader v1 4 enter Connection s...

Page 12: ...ndow appears and select the Private key applied to the SET The Private Key file name is on the Label of the Digital Board 6 When the Dialog window appears click OK and the write work will begin 7 When completed click CP Data Download OK When CP Data Download OK does not appear certificate has not Download correctly SET is rebooted and certificate Download work must be repeated 8 Now you may begin ...

Page 13: ...ogram 2 G LINK To PC Card Serial GLINK CN1202 3 VBI Inserter Norpak TES3 Guide Data Discharge Equipment In case of without the VBI Inserter TES3 a VCR may be used 7 2 Preparation for Adjustments 1 In case of with VBI Inserter TES3 Signal uses Cable input and set as below 2 In case of without VBI Inserter TES3 VCR uses Cable input and set as below Factory Test S W must be set to GlinkTo PC Card ON ...

Page 14: ...r the EZ adjust menu by pressing the Adjust key on the Service Remote Control S R C 3 Go to number 2 Cable Check and press the Right key G 4 Confirm items below Name Descrambler Check CableCARD OOB Path FDC_SNR Video Signal Normal OK CableCARDTM is inserted OK Lock OK 20dB above Normal Screen Defective Not OK CableCARDTM is removed Not OK Unlock Not OK 20dB under Black Screen No Picture ...

Page 15: ... 1 Connect terminal of D M M to Vs pin of P805 and connect terminal to GND pin of P805 2 Adjust RV401 voltage to match that of the label on the Top Right of the panel Deviation 2 0V 10 EDID The Extended Display Identification Data DDC Display Data Channel download This is the function that enables Plug and Play 10 1 HDMI EDID Data Input 1 Required Test Equipment 1 Jig for adjusting PC DDC PC seria...

Page 16: ...00 4C 47 20 50 54 56 0A 20 20 20 20 20 20 20 00 00 00 FD 00 30 60 4C 1E 64 0F 00 0A 20 20 20 20 20 20 00 00 00 FC 70 00 44 55 2D 35 30 50 59 31 30 0A 20 20 20 00 94 11 AD9883A Set Adjustment 11 1 Synopsis AD9883A Set adjustment to set the black level and the Gain to optimum 11 2 Test Equipment Service R C 801GF 802B 802F 802R or MSPG925FA Pattern Generator 720P The Horizontal 100 Color Bar Pattern...

Page 17: ...te Balance of Ez Adjust by pressing the ADJ KEY on the Service R C Then enter adjustment mode by pressing the Right KEY G 5 Adjust the Hight Light using R Gain B Gain B Gain and adjust the Low Light using R Cut G Cut B Cut 6 Adjust using Volume KEY TU 50PY22 G Gain 127 R Cut 63 Fix High Level 150gray Low Level 60gray High X 0 285 0 003 Y 0 285 0 002 Low X 0 285 0 004 Y 0 285 0 004 Color temperatur...

Page 18: ... 18 PRINTED CIRCUIT BOARD MAIN DIGITAL TOP ...

Page 19: ... 19 PRINTED CIRCUIT BOARD MAIN DIGITAL BOTTOM ...

Page 20: ... 20 PRINTED CIRCUIT BOARD MAIN ANALOG TOP ...

Page 21: ... 21 PRINTED CIRCUIT BOARD MAIN ANALOG BOTTOM ...

Page 22: ... 22 PRINTED CIRCUIT BOARD SPDIF TOP SPDIF BOTTOM SIDE A V POWER LED TOP POWER LED BOTTOM INDEX TOP INDEX BOTTOM CONTROL ...

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

Page 24: ... 24 BLOCK DIAGRAM ...

Page 25: ... 25 BLOCK DIAGRAM ...

Page 26: ...6 EXPLODED VIEW 303 200 580 306 304 307 121 120 601 600 305 540 560 570 310 212 205 207 206 211 209 203 201 208 210 202 590 501 502 302 301 300 400 101 102 250 240 103 101 520 530 551 550 105 104 430 610 ...

Page 27: ...TICAL R X3 300 3091V00740B CABINET ASSEMBLY DU 50PX41S NON NON NON 301 3090V00635A CABINET 50PX40 PDP NON 302 3211V00186B FRAME ASSEMBLY FRONT DU 50PX41S NON 303 4980V01138B SUPPORTER ASSY AL FILTER TOP 50PX40 304 4980V01140B SUPPORTER ASSY AL FILTER BOT 50PX40 305 5230V00017A FILTER MECH LGM50 01 MITSUI 50 CLASS B GLASS FILTER 306 4980V01144B SUPPORTER ASSY AL FILTER SIDE L 50PX40 307 4980V01142B...

Page 28: ...3 TP 3 3V AT24C02N 10SI 2 7 8P FMS6407MTC20X NL PB FREE 20P AT24C02N 10SI 2 7 ATMEL 8P LOCA NO PART NO DESCRIPTION IC100 IC1000 IC1001 IC1002 IC1003 IC101 IC101 IC101 IC102 IC1100 IC1101 IC111 IC112 IC1200 IC1201 IC1202 IC1203 IC1204 IC1301 IC1302 IC1305 IC1400 IC1500 IC1501 IC1502 IC1600 IC1601 IC1602 IC1603 IC1700 IC1701 IC1702 IC1703 IC1704 IC1705 IC1706 IC1707 IC200 IC200 IC201 IC201 IC202 IC2...

Page 29: ... BK KEC CHIP 2SC3875S ALY BK KEC CHIP 2SC3875S ALY BK KEC CHIP 2SC3875S ALY BK KEC CHIP 2SC3875S ALY BK KEC CHIP 2SC3875S ALY BK KEC LOCA NO PART NO DESCRIPTION Q176 Q177 Q201 Q202 Q203 Q204 Q205 Q206 Q207 Q208 Q209 Q301 Q302 Q303 Q305 Q306 Q307 Q601 Q602 Q603 Q604 Q6603 Q6604 Q6607 Q6608 Q6609 Q800 Q801 Q803 Q804 Q805 Q806 Q807 Q808 D111 D1200 D1201 D1202 D1203 D1204 D200 D204 D301 D505 D506 D800...

Page 30: ...70PF 1608 50V 5 270PF 1608 50V 5 LOCA NO PART NO DESCRIPTION C1213 C1214 C1216 C1216 C1218 C1219 C1219 C1220 C1221 C1221 C1224 C1225 C1226 C1227 C1228 C1229 C123 C1230 C1231 C1232 C1242 C1255 C1258 C126 C1264 C1266 C1269 C1273 C1277 C1279 C1321 C1322 C1324 C1325 C1327 C1331 C1334 C1335 C1339 C1344 C1345 C1363 C1405 C1419 C144 C148 C149 C150 C1513 C1515 C1516 0CE476SF6DC 0CK105DF64A 0CK102CK56A 0CE...

Page 31: ... 50V 20 470UF MVG 16V 20 470UF MVG 16V 20 47UF MVK 25V 20 47UF MVG 16V 20 470UF MVG 16V 20 470UF MVG 16V 20 220UF MVK 16V 20 220UF MVK 16V 20 LOCA NO PART NO DESCRIPTION C1740 C1742 C175 C186 C190 C202 C203 C205 C207 C212 C213 C214 C215 C216 C216 C217 C219 C223 C224 C226 C227 C232 C233 C234 C235 C236 C244 C245 C247 C251 C253 C254 C255 C260 C266 C269 C270 C272 C274 C280 C295 C297 C298 C299 C309 C31...

Page 32: ... 20 470UF MVG 16V 20 10UF MVK 16V 20 20 100UF MVK 16V 20 22UF MVG 16V 20 1UF MVK 50V 20 LOCA NO PART NO DESCRIPTION C584 C591 C600 C600 C601 C6015 C6017 C602 C602 C603 C603 C6034 C6036 C6038 C604 C6040 C6049 C605 C6054 C609 C610 C611 C612 C613 C614 C616 C618 C619 C620 C621 C624 C625 C627 C6605 C6608 C6609 C6611 C6613 C6615 C6617 C6634 C6660 C6700 C6703 C6706 C6710 C8001 C8002 C8003 C8004 C8005 0CE...

Page 33: ...0 0 047UF 1608 25V 10 0 047UF 1608 25V 10 0 047UF 1608 25V 10 220PF 1608 50V 5 LOCA NO PART NO DESCRIPTION C824 C825 C843 C849 C863 C874 C883 C885 C889 C892 C893 C898 C899 C920 C921 C923 C925 C926 C927 C928 C929 F1100 F1101 L130 L131 L132 L133 L1700 L1701 L201 L202 L203 L204 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 C7 0CE226SF6DC 0CE226SF6DC 0CK823CF56A 0CK822CK46A 0CC470CK41A 0CE226SF6...

Page 34: ...04 AR805 R1716 R1754 R675 CN201 SW101 SW102 SW103 SW104 SW105 SW106 SW107 SW108 B1000 B1007 B1100 B1101 B1102 B1103 B1104 B116 B1200 B1201 B1302 B1305 B1306 B1308 B1309 B1310 B1311 B1312 B1313 B1400 B1500 B1501 B1600 B1601 B1602 B1700 B1701 B200 B400 B401 B403 B500 B503 0RRZVTA001D 0RRZVTA001D 0RD0272H609 0RD0332H609 0RN1002F409 140 313A 140 315A 140 315A 140 315A 140 315A 140 315A 140 315A 140 31...

Page 35: ...200MA FILTER EMC BMS400 25V 200MA FILTER EMC BMS400 25V 200MA FILTER EMC BMS400 25V 200MA FILTER EMC BMS400 25V 200MA LOCA NO PART NO DESCRIPTION F717 F718 F719 IC502 L101 L102 L112 L115 L116 L117 L118 L119 L200 L205 L206 L207 L208 L209 L210 L211 L212 L213 L214 L215 L216 L220 L227 L228 L229 L230 L231 L232 L234 L235 L312 L320 L321 L412 L420 L421 L510 L511 L6602 L6603 L6604 L6605 L6607 L6608 L6609 L...

Page 36: ... RESONATOR CRYSTAL SX 1 18 432000MHZ RESONATOR CRYSTAL SX 1SMD 8 0MHZ RESONATOR CRYSTAL SX 1 24 576MHZ RESONATOR CRYSTAL SX 1 24 576MHZ RESONATOR CRYSTAL ABLS 27 000MHZ CABLE USB SERIAL ATA UL2725 AWG26 200MM CABLE ASSEMBLY 1537740 1 AMP H CABLE DVI LVDS UL20276 AWG30 500MM CABLE COAXIAL 100MM UL1365 26 VW 1 CABLE COAXIAL 150MM UL1365 26 VW 1 CABLE USB SERIAL ATA UL2725 AWG26 800MM SOFT WARE 3 01 ...

Page 37: ...inted in Korea P NO 3828VD0212F CANADA LG Electronics Canada Inc 550 Matheson Boulevard East Mississauga Ontario L4Z 4G3 USA LG Electronics Alabama Inc P O Box 240007 201 James Record Road Bldg 3 Huntsville AL 35824 ...

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