LG 26LC2RA 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 : LP61A
FACTORY MODEL : 26LC2RA-ZJ / 32LC2RA-ZJ

MODEL : 26LC2RA / 32LC2RA

website:http://biz.LGservice.com

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

Summary of Contents for 26LC2RA

Page 1: ...CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LP61A FACTORY MODEL 26LC2RA ZJ 32LC2RA ZJ MODEL 26LC2RA 32LC2RA 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 9 TROUBLE SHOOTING 19 BLOCK DIAGRAM 22 EXPLODED VIEW 24 REPLACEMENT PARTS LIST 28 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: ...ion LCD Module 5 Feature and Function No Item Specification Remark 1 Display Screen Device 26 32 inch wide Color Display Module LCD 2 Aspect Ratio 16 9 3 LCD Module 26 32 TFT WXGA LCD MAKER AUO CMO LPL 4 Operating Environment 1 Temp 0 40 deg LGE SPEC 2 Humidity 0 85 5 Storage Environment 3 Temp 20 60 deg 4 Humidity 0 85 6 Input Voltage AC100 240V 50 60Hz 7 Power Consumption Power on off max 160W 3...

Page 7: ...yp 0 280 Typ CIE 1393 Coordinate Y 0 03 0 290 0 03 AUO 26 37 32 Red X 0 640 Y 0 330 Green X 0 290 0 270 Y 0 600 Blue X 0 150 Y 0 060 White X Typ 0 285 Typ CMO 27 32 Y 0 03 0 293 0 03 Red X 0 646 0 652 Y 0 332 Green X 0 269 0 270 Y 0 600 0 589 Blue X 0 142 0 141 Y 0 072 0 068 White X Typ 0 275 Typ 0 03 0 285 0 03 LPL 26 32 Y 0 279 0 293 Red X 0 630 0 640 Y 0 338 0 343 Green X 0 283 0 280 Y 0 607 0 ...

Page 8: ... 33 72 59 94 74 176 HDTV 1080I 11 1920x1080 33 75 60 00 74 250 HDTV 1080I 12 1920x1080 28 125 50 00 74 250 HDTV 1080I 50Hz 7 Component Video Input Y PB PR 8 RGB Input PC No Resolution H freq kHz V freq kHz Pixel clock MHz Proposed 1 720x480 15 73 59 94 13 500 SDTV DVD 480I 525I 2 720x480 15 75 60 00 13 514 SDTV DVD 480I 525I 3 720x576 15 625 50 00 13 500 SDTV DVD 576I 625I 50Hz 4 720x480 31 47 59 ...

Page 9: ...3 1 PCB assembly adjustment items Download the VCTP main software IC601 VCPT Channel memory IC603 EEPROM Colorcarrier Adjustment 3 2 SET assembly adjustment items DDC Data input Adjustment of White Balance Factoring Option Data input 4 PCB assembly adjustment 4 1 PCB assembly adjustment method Using VCTP Download program 4 1 1 Download program installation 1 Extract a Zip file 2 Visual I2C LPT Dri...

Page 10: ...rsion as 40 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 folder and execute downloading with click open button Select the Bootloader bat file install VCTP_download Bootloader Push OK Finish the program after saving the file download_cs ...

Page 11: ...V Plate Ass y 1 Push S W ON connect SCL to GND using switch at Jig and connect the download jig to D sub jack 2 Supply the power Stand by 5V and wait for 3 seconds 3 Push the S W off Disconnect SCL to GND using switch at jig 4 Execute Download vi2c program in PC then a main widow will be opened 5 Double click the blue box and confirm Bootloader Version as 40 Push S W Double click Push S W ...

Page 12: ...Choose the Hex file in folder and execute downloading with click open button 10 Click OK button at the edit window 11 Under Downloading progress 12 If download is failed for example No acknowledge from slave execute download again from 1 4 1 2 2 Download method 3 SET 1 Push the Tilt button in an Adjust Remocon Then the LCD TV will change a slave mode 2 Connect Zig to TV using a D sub cable ...

Page 13: ...ned 8 Chick the choice button I n the edit window then file choice window will be opened 9 Choose the Hex file in folder and execute downloading with click open button 10 Click OK button at the edit window 11 Under Downloading progress 12 If download is failed for example No acknowledge from slave execute download again from 1 Double click If you don t push the go the Hex file would not be downloa...

Page 14: ...n 4 1 4 Colorcarrier Adjustment Inspection process a Tuning the RF signal ZJ TJ CJ PAL Philips Pattern with color Bar MJ NTSC Digital Pattern with color Bar b push the adj key in the adjustment remocon 4 2 SET assembly adjustment method Caution Each PCB assembly must be checked by check JIG set Because power PCB Assembly damages to LCD Module especially be careful 4 2 1 EDID The Extended Display I...

Page 15: ...to W B adjustment instrument only for Auto adjustment AV Pattern Generator ZJ TJ CJ model 202 PAL BDGHI pattern 78 216 Gray MJ model 207 NTSC J pattern 78 216 Gray 6 2 Connecting diagram of equipment for measuring For Automatic Adjustment Push the POWER ON key at the Adjust Remocon before Adjustment of W B the Baud rate PSM CSM will change 115200bps Standard MJ Optimum Normal Auto adjustment Map R...

Page 16: ...adjustment mode by pressing the IN START key White Balance on R C 5 5 Stick sensor to center of the screen and select each items Red Green Blue Gain and Offset using CH key on R C 6 Adjust Only High Light with R Gain B Gain using VOL key on R C 7 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 80 Green Gain 80 Blue Gain 8...

Page 17: ...CJ For MJ XD Auto Advanced Cinema Off Black Level Low Available For HDMI Reset To Set 3 Sound SSM Flat AVL Off TV Speaker On 4 Time Clock Off Time Off On Time PR 1 Vol 30 Off Auto Sleep Off 5 Special Language English Following Buyer s demand PR Child Lock Off Set ID 1 XD Demo To Start 6 Screen Auto Config To Set Available For RGB PC mode Manual Config Phase 0 Available For RGB PC mode Clock 0 H Po...

Page 18: ...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 19: ...discharge little 2 Check process Is plug in power cord Plug in a power cord No Check the PSU No Check X tal X600 No Check IC600 No Check Q901 No Yes Check P200 Voltage P ST_5V Yes Check X tal X600 19 6608MHz Yes Check IC600 Voltage 3 3V Yes Check Power on off 5V Yes Exchange the PSU ...

Page 20: ... this elements Is the LVDS cable connected No Yes Are good some elements C R L or Diode at path No Yes Is VCT P IC good No Insert the LVDS cable exactly If it dead or short exchange this elements Exchange the VCT P IC Exchange the Tuner Exchange the VCT P IC No Yes Is the LVDS cable connected No Yes Are good some elements C R L or Diode at path No Yes Check the EDID data No Yes Is AD9381 good only...

Page 21: ...d good No Yes Is IC401 good AD9381 No No Download EDID data once more Exchange IC401 Is sound at Scart1 2 or Component2 RGB or Side AV Good Are good some elements C R L or Diode at Sound path No No Yes Yes Is IC800 good Switching IC No If it dead or short exchange this elements Is sound at RF AV or Component1 Good Are good some elements C R L or Diode at Sound path No Yes No If it dead or short ex...

Page 22: ...BLOCK DIAGRAM 22 ...

Page 23: ... and audio signal processing It accepts the RF precessed signal IF signal from tuner SAW Filter and separates sound and picture from it Scaler is reponsible for regulating the timing of signal to LCD panel and size and location of the signal Graphic control accepts the PC Analog RGB and DVI D Digital signal The signal of PC input is connected to analog port in Scaler and the signal of DVI D input ...

Page 24: ... 24 EXPLODED VIEW 26LC2RA 010 020 060 070 080 090 100 030 140 150 040 130 110 050 120 ...

Page 25: ...ub SUB T T LP61A 26LC2R Z SIDE AV NT CKD EBR30907301 PCB Assembly Sub SUB T T LP61A 26LC2R ZJ Side AV MA SKD 68719STA67A PCB Assembly Sub SUB T T LP61C 26LC2R CJ AUO SIDE AV FOR NT 6709900016C SMPS AC DC LGLP2637HEP 90 0VTO264 0V 215W 47TO63HZ UL CSA SEMKO YY AT H E or 6709900016A Power Supply Assembly FREE H3 E2 LCD MODEL LCD LG ELECTRONICS LB LC 33139L2020A Main Total Assembly 26LC2R A B ZJ BRAN...

Page 26: ... 26 EXPLODED VIEW 32LC2RA 010 020 050 070 080 090 100 030 150 040 140 120 130 060 060 110 ...

Page 27: ...892A PCB Assembly Sub SUB T T LP61A 32LC2R Z SIDE AV 6709900016C SMPS AC DC LGLP2637HEP 90 0VTO264 0V 215W 47TO63HZ UL CSA SEMKO YY AT H E or 6709900016A Power Supply Assembly FREE H3 E2 LCD MODEL LCD LG ELECTRONICS LB LC 33139L3039A Main Total Assembly 32LC2R A B ZJ BRAND LP61A AUO CKD 33139L3043A Main Total Assembly 32LC2R BRAND LP61A CMO 32 INCH 33139L3011A Main Total Assembly 32LC2R AUO BRAND ...

Page 28: ...0 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C406 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C407 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C408 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C409 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C410 0CK102CK56A 1000PF 1608 50V 0 1 R TP X7 C411 0CK102CK56A 1000PF 1608 50V 0 1 R TP X7 C412 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C413 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C414 ...

Page 29: ... 1608 50V 10 R TP X7 C974 0CK103CK56A 0 01UF 1608 50V 10 R TP X7 C975 0CK103CK56A 0 01UF 1608 50V 10 R TP X7 DATE 2006 03 15 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C976 0CK103CK56A 0 01UF 1608 50V 10 R TP X7 C1059 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C1063 0CK103CK56A 0 01UF 1608 50V 10 R TP X7 C172 0CK682CK51A 6800PF 1608 50V 10 R TP B C173 0CK682CK51A 6800PF 1608 50V 10 R TP B C174 0CK6...

Page 30: ...126 0CE106WH6DC 10UF MVK 25V 20 R TP SMD C128 0CE106WH6DC 10UF MVK 25V 20 R TP SMD C131 0CE476WF6DC 47UF MVK 16V 20 R TP SMD DATE 2006 03 15 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C134 0CE106WH6DC 10UF MVK 25V 20 R TP SMD C135 0CE106WH6DC 10UF MVK 25V 20 R TP SMD C142 0CE476WF6DC 47UF MVK 16V 20 R TP SMD C313 0CE476WF6DC 47UF MVK 16V 20 R TP SMD C340 0CE107WF6DC 100UF MVK 16V 20 R TP SMD C3...

Page 31: ... IC902 0IPMG00027A SC156515M 1 8TR SEMTECH 5P IC903 0IMCRRH001A BA033FP E2 ROHM 3P SOP TO25 IC301 0IPH741400E 74HC14D 14SOP TP SHITTER TR IC303 0ISTL00031A MC74HC4066ADR2G LF ON SEMI IC602 0IFA742530B 74ACT253SC FAIRCHILD 16P SO L1004 6140VB0004B 26UH 1UEWPHY 22 5TURN YL 9N L910 6140VB0004B 26UH 1UEWPHY 22 5TURN YL 9N L801 6140VR0008A SLF12575T 330M4R7 33UH SMD L802 6140VR0008A SLF12575T 330M4R7 3...

Page 32: ...2SA1504S ASY BK KEC Q801 0TR387500AA CHIP 2SC3875S ALY BK KEC Q802 0TR387500AA CHIP 2SC3875S ALY BK KEC DATE 2006 03 15 S AL LOC NO PART NO DESCRIPTION SPECIFICATION Q111 0TR387500AA CHIP 2SC3875S ALY BK KEC Q112 0TR387500AA CHIP 2SC3875S ALY BK KEC Q113 0TR387500AA CHIP 2SC3875S ALY BK KEC Q401 0TR830009BA BSS83 TP PHILIPS NON N CHAN Q402 0TR830009BA BSS83 TP PHILIPS NON N CHAN Q508 0TR830009BA B...

Page 33: ... W 5 1608 R TP R314 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP R315 0RJ1002D677 10K OHM 1 10 W 5 1608 R TP DATE 2006 03 15 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R316 0RJ0752D677 75 OHM 1 10 W 5 1608 R TP R317 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP R320 0RJ0752D677 75 OHM 1 10 W 5 1608 R TP R321 0RJ4701D677 4 7K OHM 1 10 W 5 1608 R T R322 0RJ4701D677 4 7K OHM 1 10 W 5 1608 R T R324 0RJ2001D677 2K O...

Page 34: ...0 OHM 1 10 W 5 1608 R TP R861 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP R865 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP DATE 2006 03 15 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R866 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP R867 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP R868 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP R872 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP R876 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP R900 0RJ1002D677 10...

Page 35: ...1608 R TP R666 0RJ4701D677 4 7K OHM 1 10 W 5 1608 R T R667 0RJ1000D677 100 OHM 1 10 W 5 1608 R TP DATE 2006 03 15 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R668 0RJ1000D677 100 OHM 1 10 W 5 1608 R TP R670 0RJ1000D677 100 OHM 1 10 W 5 1608 R TP R671 0RJ4701D677 4 7K OHM 1 10 W 5 1608 R T R672 0RJ1000D677 100 OHM 1 10 W 5 1608 R TP R675 0RJ1000D677 100 OHM 1 10 W 5 1608 R TP R676 0RJ1000D677 100...

Page 36: ...H9101D622 9 1K OHM 1 10 W 2012 5 00 R102 0RH3301D622 3 3K OHM 1 10 W 2012 5 00 R103 0RH1101D622 1 1K OHM 1 10 W 2012 5 00 R104 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R105 0RH9101D622 9 1K OHM 1 10 W 2012 5 00 R106 0RH3301D622 3 3K OHM 1 10 W 2012 5 00 R107 0RH1101D622 1 1K OHM 1 10 W 2012 5 00 R108 0RH0000D622 0 OHM 1 10 W 2012 5 00 D C300 0CH5101K416 100PF 50V 5 NP0 2012 R TP C301 0CH5101K416 100PF...

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Page 40: ...Apr 2006 Printed in Korea P NO MFL30105510 ...

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