LG 50PC52 Service Manual Download

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PLASMA TV

SERVICE MANUAL

CAUTION

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

CHASSIS : PP78A

MODEL : 50PC52

50PC52-ZD

website:http://biz.LGservice.com

Summary of Contents for 50PC52

Page 1: ...PLASMA TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS PP78A MODEL 50PC52 50PC52 ZD website http biz LGservice com ...

Page 2: ...CONTENTS 2 SAFETY PRECAUTIONS 3 SPECIFICATION 4 ADJUSTMENT INSTRUCTION 6 TROUBLE SHOOTING 15 BLOCK DIAGRAM 23 EXPLODED VIEW 24 EXPLODED VIEW PARTS LIST 25 REPLACEMENT PARTS LIST 26 SVC SHEET PRINTED CIRCUIT DIAGRAM ...

Page 3: ...k 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 metallic parts such as antenna terminals phone jacks etc If the exposed metallic part has a return path to the chassis the measu...

Page 4: ...ordance with SBOM 5 The receiver must be operated for about 20 minutes prior to the adjustment V Test Method 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC V General Specification 50 XGA Chassis PP78A 50PC52 ZD EU LG Model Name Market Brand Remark 50PC52 ZD Safety IEC EN60065 EMI EN55013 EMS EN55020 EU Model Appliance Market TEST Rem...

Page 5: ...1EA FULL SCART HALF SCART SIDE AV SIDE S VIDEO L R Input V Module Specification PDP50X4 Display area Outline dimension Number of Pixels Cell pitch Color arrangement Weight net Temperature Operating Environment Humidity Pressure Temperature Storage Environment Humidity Pressure Image stick Start time minimization Low Brightness Arrival Time mode 1106 5 H 662 1 V 0 5 1190 W x 700 H x 52 D 1 1366 H x...

Page 6: ...wnload the VCTP main software IC500 VCT_Pro 2 Channel memory IC501 EEPROM 3 Color carrier Adjustment 3 2 SET assembly adjustment items 1 DDC Data input 2 Adjustment of White Balance 3 Factoring Option Data input 4 PCB assembly adjustment method Using VCTP Download program 4 1 Download program installation 1 Extract a Zip file 2 Visual I2C LPT Driver Installation LPT Port Driver LptDrv Setups Progr...

Page 7: ...B Ass y 1 Connect the download jig to D sub jack 2 Execute Download vi2c program in PC then a main window will be opened 3 Double click the blue box and confirm Bootloader Version as 42 4 Click the Erase Flash button 5 Double click the download file low then edit window will be opened 6 Click the choice button in the edit window then file choice window will be opened 7 Choose the Hex file in folde...

Page 8: ...te Download vi2c program in PC then a main widow will be opened 5 Double click the blue box and confirm Bootloader Version as 42 6 Click the Erase Flash button 7 Double click the download file low then edit window will be opened 8 Chick the choice button I n the edit window then file choice window will be opened 9 Click the load flash button 10 Choose the Hex file in folder and execute downloading...

Page 9: ... 4 Click GO button If you don t push the go the Hex file would not be downloaded although the download proceeds normally at first glance 5 Double click the blue box and confirm Bootloader Version as 42 6 Click the Erase Flash button 7 Double click the download file low then edit window will be opened 8 Chick the choice button I n the edit window then file choice window will be opened 9 Click the l...

Page 10: ...wnload jig 7 3 Connection structure 1 Connect the download jig to D sub jack 2 Execute Channel vi2c program in PC then a main window will be opened 7 4 Connection condition 1 IC name and circuit number VCTP and IC500 2 Use voltage 3 3V 3 SCL 15pin 4 SDA 12pin 5 Tact time about 3seconds 7 5 Download method 1 Connect the download jig to D sub jack 2 Execute Channel vi2c program in PC then a main win...

Page 11: ...al RF signal EU 5CH 9 4 Adjustment method 1 tuning the RF signal ZA ZB TA TB PAL Philips Pattern with Color Bar 2 push the adj key in the adjustment remocon 10 POWER PCB Assy Voltage Adjustments Va Vs Voltage adjustments 10 1 Profile To supply the Va Vs voltage that the module want 10 2 Required Test Equipment 1 Stick for adjustment 2 DMM 10 3 Connection structure 10 4 Connection Diagram for Measu...

Page 12: ...ing 11 4 Preparation for Adjustment 1 As above Fig 2 Connect the Set EDID Download Jig PC Cable 2 Turn on the PC EDID Download Jig And Execute the S W EDID TESTER Ver 2 5 3 Set up S W option Repeat Number 5 Device Address A0 PageByte 8 4 Power on the Set 11 5 Sequence of Adjustment 1 DDC data of Analog RGB 1 Init the data 2 Load the EDID data Open File Analog RGB PP78A_RGB ANA Digital HDMI1 PP78A_...

Page 13: ...gram of equipment for measuring For Automatic Adjustment 1 Enter the DDC adjust mode Enter the white balance adjustment mode at the same time heat run mode when pushing the power on by power only key Maintain the white balance adjustment mode with same condition of Heat run Maintain after AC off on in status of Heat run pattern display 2 Release the DDC adjust mode Release the adjust mode after AC...

Page 14: ...thers In case of decreasing the x decreasing the R fix G In case of decreasing the y decreasing the G fix R 3 x target y target 1 First decrease B so make y a little more than the target 2 Adjust x value by decreasing the R 4 x target y target 1 First decrease B so make x a little more than the target 2 Adjust x value by decreasing the G 7 When adjustment is completed Exit adjustment mode using EX...

Page 15: ...cord plugged in Connect the cable Plasma CN1 No Yes Are the line filter and PSU connected Replace the fuse No Yes Is the correct fuse for the PSU in place Plasma F101 Connect the 13 14pin cable Next remove all cables connected to the PSU and switch the AV voltage to manual If the ST by 5V does not operate replace the PSU No Yes Is the PSU and 13 14pin cable connected to the VSC board ...

Page 16: ...operate correctly Yes No No Is the Y Board normal Is the appropriate fuse FS2 FS3 on the Y B D Is the output voltage normal after removing the P1 connector of the Y B D Yes No No Replace the Z Board Is the Z Board normal Is appropriate fuse FS1 FS2 on the Z B D Is the output voltage normal after removing the P1 connector of the Z B D Yes No No Is the X Board normal Is the output voltage normal aft...

Page 17: ...Low High voltage except for the Stand by 5V Yes No No Is there a fault with the link cable Yes Is the output for the IC500 normal Reconnect the link cable in P803 Plasma No Replace the VSC No Yes Check the power L1103 Is the video output of the Tuner normal Check TU400_Pin13 Is the input voltage normal Check Pin3 Is the I2C communication normal Check Pin9 Pin10 Yes No Yes Is the LVDS Cable connect...

Page 18: ...nput source No 6 In the case of an unusual display in Side AV mode Is the video input of the A V jack normal Check CN703 Pin9 Yes Sam as Block A Check the input source No 7 In the case of an unusual display in Side S Video mode Is the video input of the A V jack normal Check CN703 Pin1 Pin3 Yes Sam as Block A Check the input source No ...

Page 19: ...e input source No 9 In the case of an unusual display in SCART 1_RGB mode Is the video input of the A V jack normal Check R110 R170 R171 R173 Yes Sam as Block A Check the input source No 10 In the case of an unusual display in SCART 2 mode Is the video input of the A V jack normal Check R174 Yes Sam as Block A Check the input source No ...

Page 20: ...t source No 12 In the case of an unusual display in component 2 mode Yes Change the IC IC500 Check the input source No Is the video input of the A V Jk202 normal Check R241 R242 R243 13 In the case of an unusual display in RGB mode Yes Change the IC IC500 Check the input source No Is the R G B input and H V sync of the JK201 normal Check R220 R221 R253 R254 R255 ...

Page 21: ...ere no sound only AV COM2 PC Is the output of IC600 R607 R608 normal Yes Is there no sound only for RF No No No No Download the EDID data Set speaker on in the menu No Replace the IC600 No Check the Speaker cable No Is the IC500 operating normal Replace the IC500 No Yes Is the IC601 operating normal Replace the IC601 Replace the VSC BD Yes Check the signal after IC600 refer to circuit diagram Chec...

Page 22: ...thentication attempted Reset TMDS power down on register 0x60 offset 0x3f 0xff Check HDMI source Change to another source or cable Yes Is the wave continuous Normal video Normal audio No Yes Replace the IC303 No 1 Check TV input mode HDMI 1 port support HDMI and DVI So if you input DVI signal and PC audio from phone jack You can hear PC audio 2 Unplug and plug in the HDMI cable sometimes ESD surge...

Page 23: ...COMP2_R L HS VS PIP OPTION ANX9021 ANX9021 TMDS RECIEVER TMDS RECIEVER TEA6420 TEA6420 Sound switch Sound switch 2 RX 0 1 2 CLK SIDE_R L SCART1 2_V RCA1 2_V EEPROM EEPROM SUB TUNER VIDEO_DECODER VIDEO_DECODER TW9909 TW9909 EEPROM EEPROM VCT Pro VCT Pro Lip sync Lip sync SCART_FB AV_AUDIO R L AM_AUDIO COMP1_R L I 2 C RX 0 1 2 CLK TV_OUT TV_OUT MNT_OUT MNT_OUT PIP_V PIP_V ITU 656_IN SCART1 2_I D HDM...

Page 24: ... 24 EXPLODED VIEW 300 306 600 400 900 501 590 520 502 303 207 302 101 301 570 204 250 208 203 580 205 200 560 120 202 304 201 240 901 206 603 601 602 A2 A21 ...

Page 25: ...NTOM LGEMA ASSY 304 AJJ31592805 Supporter Assembly 50PC5 SUPPORTER LEFT ASSY FOR PHANTOM LGEMA ASSY 306 ABA31592904 Bracket Assembly DECO 50PC52 ZB 50PC56 ZD NON DECO BRACKET ASSY Direct Grill LGEMA 1ton Black 400 ACQ31591305 Cover Assembly 50PC5R ZB NON 50 PCM SECD 0 5t FOR LGEMA local 501 AGU31681115 Plate Assembly ASSY PLATE TUNER BOT SMALL 42PC5R ZB MA LCOAL 502 AGU31680921 Plate Assembly ASSY...

Page 26: ...T 18pF 5 50V C0G 5 C311 0CE106SH6DC VMV106M025S0ANB010 10uF 20 25V 20 C312 0CK103CK51A 0603B103K500CT 10nF 10 50V Y5P 3 C316 0CE106WFKDC MVK4 0TP16VC10M 10uF 20 16V 16MA C317 0CK103CK56A 0603B103K500CT 10nF 10 50V X7R 5 C318 0CE106SH6DC VMV106M025S0ANB010 10uF 20 25V 20 C319 0CK103CK56A 0603B103K500CT 10nF 10 50V X7R 5 C320 0CC220CK41A C1608C0G1H220JT 22pF 5 50V C0G 5 C321 0CC220CK41A C1608C0G1H22...

Page 27: ...M C612 0CC471CK41A C1608C0G1H471JT 470pF 5 50V C0G C613 0CC471CK41A C1608C0G1H471JT 470pF 5 50V C0G C614 0CK475EF67A C3216X5R1C475MT 4 7uF 20 16V X5R C615 0CK475EF67A C3216X5R1C475MT 4 7uF 20 16V X5R C617 0CK475EF67A C3216X5R1C475MT 4 7uF 20 16V X5R C618 0CK475EF67A C3216X5R1C475MT 4 7uF 20 16V X5R C619 0CK102CK56A 0603B102K500CT 1nF 10 50V X7R 55 C620 0CK102CK56A 0603B102K500CT 1nF 10 50V X7R 55 ...

Page 28: ... 1 9A 1W SO D106 EAH33946001 CDS3C05GTA 5 6V 6 4V 19V 1 9A 1W S D107 EAH33945901 CDS3C30GTH 30V 50V 120V 1 9A 1W SO D108 EAH33945901 CDS3C30GTH 30V 50V 120V 1 9A 1W SO D109 EAH33945901 CDS3C30GTH 30V 50V 120V 1 9A 1W SO D110 EAH33945901 CDS3C30GTH 30V 50V 120V 1 9A 1W SO D111 EAH33945901 CDS3C30GTH 30V 50V 120V 1 9A 1W SO D112 EAH33946001 CDS3C05GTA 5 6V 6 4V 19V 1 9A 1W S D200 EAH33946001 CDS3C05...

Page 29: ...25X1MM SM L708 6210TCE001A HB 1S2012 080JT 8OHM 2X1 25X1MM SM L709 6210TCE001A HB 1S2012 080JT 8OHM 2X1 25X1MM SM L800 6210TCE001G HH 1M3216 501JT 500OHM 3 2X1 6X1 3 L801 6210TCE001G HH 1M3216 501JT 500OHM 3 2X1 6X1 3 L802 6210TCE001B HH 1H3216 500JT 50OHM 3 2X1 6X1 3M L803 6210TCE001G HH 1M3216 501JT 500OHM 3 2X1 6X1 3 L806 6210TCE001G HH 1M3216 501JT 500OHM 3 2X1 6X1 3 L806 6210TCE001G HH 1M3216...

Page 30: ...0EZHJ750 75OHM 5 1 8W 2012 R R109 0RJ2203D677 MCR03EZPJ224 220KOHM 5 1 10W 1608 R110 0RH0000D622 MCR10EZHJ000 0OHM 5 1 8W 2012 R T R110 0RJ2000D677 MCR03EZPJ201 200OHM 5 1 10W 1608 R111 0RJ1001D677 MCR03EZPJ102 1KOHM 5 1 10W 1608 R R112 0RJ1001D677 MCR03EZPJ102 1KOHM 5 1 10W 1608 R R114 0RH0000D622 MCR10EZHJ000 0OHM 5 1 8W 2012 R T R115 0RH0000D622 MCR10EZHJ000 0OHM 5 1 8W 2012 R T R116 0RH0000D62...

Page 31: ...0W 1608 R R319 0RJ0122D677 MCR03EZPJ120 12OHM 5 1 10W 1608 R R320 0RJ0122D677 MCR03EZPJ120 12OHM 5 1 10W 1608 R R321 0RJ0122D677 MCR03EZPJ120 12OHM 5 1 10W 1608 R R322 0RJ0122D677 MCR03EZPJ120 12OHM 5 1 10W 1608 R R323 0RJ0122D677 MCR03EZPJ120 12OHM 5 1 10W 1608 R R324 0RJ0122D677 MCR03EZPJ120 12OHM 5 1 10W 1608 R R325 0RJ0122D677 MCR03EZPJ120 12OHM 5 1 10W 1608 R R326 0RJ0122D677 MCR03EZPJ120 12O...

Page 32: ... 10W 1608 R R546 0RJ4701D677 MCR03EZPJ472 4 7KOHM 5 1 10W 1608 R547 0RJ4701D677 MCR03EZPJ472 4 7KOHM 5 1 10W 1608 R548 0RJ1000D677 MCR03EZPJ101 100OHM 5 1 10W 1608 R549 0RJ1000D677 MCR03EZPJ101 100OHM 5 1 10W 1608 R550 0RJ1000D677 MCR03EZPJ101 100OHM 5 1 10W 1608 R551 0RJ1000D677 MCR03EZPJ101 100OHM 5 1 10W 1608 R552 0RJ0000D677 MCR03EZPJ000 0OHM 5 1 10W 1608 R R553 0RJ1000D677 MCR03EZPJ101 100OHM...

Page 33: ... MCR03EZPJ123 12KOHM 5 1 10W 1608 R910 0RJ4701D677 MCR03EZPJ472 4 7KOHM 5 1 10W 1608 R911 0RJ1002D677 MCR03EZPJ103 10KOHM 5 1 10W 1608 R912 0RJ1002D677 MCR03EZPJ103 10KOHM 5 1 10W 1608 C1 6631900010Q Harness SMH200 SMH200 1200mM 2 00MM 12P UL C2 6631900012E Harness SMH250 SMH250 300mM 2 50MM 10P UL1 C3 6631900099A Harness SMH250 SMP250 300mM 2 50MM 3P UL10 C4 6631T20029E Harness 6p 2 0mm SMH200 06...

Page 34: ...MFL37396705 Manual Owners NEW MDL EU all 26lan H4 simple book A2 MKJ32022825 Remote Controller REMOTE CONTROLLER A21 3550V00590A Cover MOLD BATTERY TN 50PY20 ABS 6710V00142 A3 EAD36223101 Power Cord LP34A LS60L LP 34A LS 60L 1 87M BLACK A4 4972V00178A Supporter COMPLEX METAL ASSY PDP SET A5 3880TKZ004D Bag COMPLEX VINYL 200 200 0 58 H C MODEL A6 4950TKA320A Plate PRESS SBHG T1 2 SUPPORT UPSET A7 F...

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Page 38: ...MAIN TOP MAIN BOTTOM SIDE A V TOP SIDE A V BOTTOM IR LED CONTROL TOP CONTROL BOTTOM PRINTED CIRCUIT BOARD ...

Page 39: ...Jun 2007 Printed in Korea P NO MFL38559904 ...

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