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LG 34UM61, Service Manual

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

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

SPECIFICATION ....................................................................................... 4

TROUBLE SHOOTING GUIDE  ..............................................................  25

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

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DISASSEMBLY  ......................................................................................  21

ADJUSTMENT INSTRUCTION  ............................................................... 7

 

 

Firmware Upgrade Method ...................................................................  15

CONTENTS  

LGE Internal Use Only

Copyright  © 

  LG Electronics. Inc. All rights reserved.

Only for training and service purposes

Summary of Contents for 34UM61

Page 1: ...CHASSIS MODEL 34UM61 CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL SERVICE MANUAL LED MONITOR SERVICE MANUAL LM55D P NO MFL70139801 1701 REV00 Internal Use Only ...

Page 2: ...ROUBLE SHOOTING GUIDE 25 BLOCK DIAGRAM 19 20 W E I V D E D O L P X E DISASSEMBLY 21 ADJUSTMENT INSTRUCTION 7 Firmware Upgrade Method 15 CONTENTS LGE Internal Use Only Copyright LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 3: ...ved 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 measured resistance should be between 1...

Page 4: ...pe Color Black White Weight 130g Refer to Suffix standard and power cord table 8 Cable DVI Length Shape Color Pin Do not Support HDMI Length 1 8m 1 5m Shape Detachable Type Color Black White Pin 19pin Weight 100g Support Black EAD00926103 White EAD00926140 USB Length Shape Color Do not Support Audio Length Shape Color Do not Support TV Length Shape Color Pin Do not Support 9 Wall mount KR EU EAY62...

Page 5: ...s 75 0 625 600 1 3 21 6 H Pixels 65 0 48 363 1344 1024 24 136 160 1024 x 768 V Lines 60 0 806 768 3 6 29 7 H Pixels 78 75 60 123 1312 1024 16 96 176 1024 x 768 V Lines 75 029 800 768 1 3 28 8 H Pixels 108 67 5 1600 1152 64 128 256 1152 x 864 V Lines 75 900 864 1 3 32 9 H Pixels 74 25 45 1650 1280 110 40 220 1280x720 V Lines 60 750 720 5 5 20 10 H Pixels 108 63 981 1688 1280 48 112 248 1280 x 1024 ...

Page 6: ...All rights reserved Only for training and service purposes g n i m i T I M D H 3 1 2 Factory support mode Horizontal frequency Vertical frequency Preset Mode KHz Hz 1 480P 31 5 60 2 576P 31 25 50 3 720P 37 5 50 4 720P 45 60 5 1080P 56 25 50 6 1080P 67 5 60 ...

Page 7: ... Input signal Unit Product Specification Standard 2 5 Reserve after operation Above 5 Minutes Heat Run Temperature at 25 5 C Relative humidity 65 10 Input voltage 100 240V 50 60Hz 2 6 Adjustment equipments Color Analyzer CA 210 or CA 110 DDC Adjustment Jig equipment 3 Main PCB check process APC After Manual Insult executing APC 3 1 ADC Process 1 34UM59 doesn t need ADC process because it has only ...

Page 8: ... 0 004 and confirm Save 9300K Color by commanding COLOR SAVE Command code Set as 6500K by commanding COLOR_MODE_CHANGE Command code 4 2 3 WARM 6500K color adjustment If this TCO spec should be satisfied later refer to below method Adjust to meet x 0 313 0 003 y 0 329 0 003 and confirm Option It s another method for 6500K color adjustment at GUMI NT At first Check ΔUV If that is under 0 06 5 the se...

Page 9: ...u 4 You can control R G B Gain Manually at 6 500k 9 300k W hen doing Adjustment Please make circumstance as below Measurement Condition CA 210 Ch 14 WLED 4 3 DPM Operation check Measurement Condition 100 240V 50 60Hz 1 Set Input to HDMI1 HDMI2 2 Turn off the source device 3 Check DPM operation refer to the below table Operating Condition Sync H V or Video EUT MSPG6100 LED SET Wattage W Sleep mode ...

Page 10: ...tal ian Swedish Finnish Por tuguese Bra zil Polish Ru ssian Greek Ukrainian C hinese Japa nese Korean Traditional C hinese Ratio Wide COLOR TEMP PRESET PRESET CUSTOM Black Level Low Black level enable at HDMI input CONTRAST 70 LANGUAGE Depend on the sale region FACTORY RESET NO SES Low AV Block CONTRAST N A BRIGHTNESS SHARPNESS COLOR TINT BASS TREBLE MUTE LANGUAGE IMAGE SIZE OSD POSITION TRANSPARE...

Page 11: ...4 No Adjustment contents CMD hex ADR VAL hex Explanation 1 EEPROM ALL INITIAL E4 00 00 adjustment Initialization 2 EEPROM READ E7 Slave add At EEPROM Read 3 EEPROM WRITE E8 Slave add Data Write data at EEPROM 4 R GAIN 16 00 00 64 Tune Gain 5 G GAIN 18 00 00 64 6 B GAIN 1A 00 00 64 7 BRIGHT Backlight 10 00 00 64 Tune Analog Bright 8 FACTORY RESET F0 00 00 Factory reset 9 COLOR_MODE_ CHANGE F2 00 01...

Page 12: ...0XF6 0 0x96 34UM59 PB340WW1SJ 17 APD command 0XF7 00 0X00 0X01 0X00 OFF 0X01 ON 18 Model Select 0XF9 00 0X01 0X01 UM59 19 Vcom Only LGD panel biz models need Internal Pattern ON A7 00 03 OSD Flicker pattern on Vcom Adjustment A9 00 Value Range 0x00 0x7F Save Vcom vlaue A8 00 00 Save Vcom value in EEROM for SVC OSD Internal Pattern Off A7 00 00 OSD Flicker pattern off 6 5 EEPROM Data Write 6 5 1 Si...

Page 13: ...odH HPeriodL VtotalH VtotalL SrcHTotalH SrcHTotalL SrcHStartH SrcHStartL SrcVStartH SrcVStartL HsyncPhase Temporary Data write Write to particular address of EEPROM 6 6 E 2 PROM Data Read 6 6 1 Signal TABLE 128 Bytes 6 6 2 COMMAND SET No Adjustment contents CMD hex ADH hex ADL hex Explanation 1 EEPROM READ E7 A0 0 0 Page 0 7F Read 2 80 0 Page 80 FF Read 3 A2 0 1 Page 0 7F Read 4 80 1 Page 80 FF Re...

Page 14: ... 0 7 Page 0 7F Read 16 80 7 Page 80 FF Read 6 6 3 Use Read E 2 PROM s specific area as unit of 128 80h byte 84h 6 6 4 EDID Write EEPROM access by using DDC2AB protocol 1 Byte write L 0x00 0x7F D data 8 byte write L 0x00 0x10 0x70 6 6 5 EDID Read DDC2AB Command A8 128 Byte transfer of EDID Buffer of MICOM STOP STOP A A A A A L L A0 A0 Data8 D Data1 START START A STOP A 00 A0 START A A CS A Data1 A1...

Page 15: ...d USB cable on LG JIG like below picture Connect HDMI cable on the monitor and connect USB cable on the PC 2 Execute Realtek ISP Tool Execute RTDtool Exe file Check the Composite Device USB Serial Converter A B on DEVICE Manager 3 Check USB Driver 4 Install USB Driver Check Access method as FTDUsb communication option Æ Driver Install ...

Page 16: ...Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 5 Set Access Method Select FTDI USB on Access Method 6 Set options Uncheck the Check ACK checkbox ...

Page 17: ...LG Electronics Inc All rights reserved Only for training and service purposes 7 ISP Select ISP Icon 8 set Erase Setting Click the Tool Icon to enter the ISP option window Select Erase Setting tab and choose Bank Erase ...

Page 18: ...for training and service purposes 9 Load ISP File Check the checkbox of Bank 0 and then press button to open the file window select the ISP file 10 Do ISP Click the thunderbolt icon box to do ISP After finishing it you can see Success text on the status window ...

Page 19: ...aining and service purposes BLOCK DIAGRAM 120 110 NT68363 Scaler IC100 LVDS 41pin LVDS 51pin HDMI 1 JK101 HDMI 1 JK102 Headphone JK601 From Scaler DC Jack 19V LED P400 LED Drvier IC 500 LED Drvier IC 500 LED P401 Control P200 Crystal X200 Flash Memory IC200 1 2V 2 5V 3 3V 5V 19V VOCM_I2C ...

Page 20: ...elated 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 SAFETY NOTICE 910 900 920 200 220 700 500 330 201 310 400 540 or...

Page 21: ...LG Electronics Inc All rights reserved Only for training and service purposes DISASSEMBLY Fig 1 2 Put the MNT on the clean and flat surface disassembly the stand assy press down joy button Fig 3 Remove the Screw 4EA Fig 4 Remove the deco ...

Page 22: ...ternal Use Only Copyright LG Electronics Inc All rights reserved Only for training and service purposes Fig 5 Remove bottom screw 4EA Fig 6 Disassemble the backcover Fig 7 Remove FFC control cable and control PCB ...

Page 23: ... 23 LGE Internal Use Only Copyright LG Electronics Inc All rights reserved Only for training and service purposes Fig 8 Remove bottom metal bar assy Fig 9 Remove T con sheet ...

Page 24: ... 24 LGE Internal Use Only Copyright LG Electronics Inc All rights reserved Only for training and service purposes Fig 10 Remove case top assy Fig 11 module picture ...

Page 25: ... LGE Internal Use Only 1 NO POWER Replace X100 N Check JP800 Voltage Level 12V Check Power connector OK Replace Power Board Y N Y Check IC801 Output Voltage Level 1 1V 3 3V Replace IC801 Recheck Y N Check X100 Clock 14 318MHz Check IC700 Output Voltage Level 5VS Replace IC700 Recheck N Y Replace IC101 Flash Memory Y ...

Page 26: ... ON Replace Cable N Module Back Light On Check IC100 Replace Main Scaler IC Y N N Check Panel Power 5V JP125 Check IC700 Output 5V Replace IC700 Recheck Y N Check Panel Clock P101 10 11 22 23 Check IC100 Repair Main B D Y N Check FFC Cable for Damage or Open Conductors Check LED Driver FB P700 1 6 Replace T Con Board or Module Y ...

Page 27: ...s LGE Internal Use Only 3 No Video Replace Main Scaler IC100 Check input signal format Is it supported Check JK200 201 202 P20 0 for proper connection or Damage Replace Connector Y N Check I2C Signal JK200 201 2 02 P200 Re Download EDID Data Y N Y Check Dsub Cable for Damage or Open Connector Y ...

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