LG 34BL650 Service Manual Download Page 21

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LGE Internal Use Only

Trouble shooting : No Screen on

No Raster(OSD is not
displayed)

CHECK

P200 PIN1(3.3V)

YES

CHECK

IC504 PIN16(3.3V)

1.CHECK IC202
2. Trouble in IC202

CHECK IC202

PIN140,PIN141

4.3

MHz

CHECK IC202

PIN79,PIN80

SCL/SDA

CHECK CONNECTION
From HDMI to IC202

Trouble in cable or LCD module

Summary of Contents for 34BL650

Page 1: ...Internal Use Only P NO CHASSIS MODEL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL SERVICE MANUAL MFL62449374 1902 REV00 34BL650 34BL650 B LM80B IPS LED MONITOR ...

Page 2: ...erved Only for training and service purposes LGE Internal Use Only CONTENTS CONTENTS 2 PRECAUTION 3 SERVICING PRECAUTIONS 4 SPECIFICATIONS 6 TIMING CHART 8 ADJUSTMENT 11 BLOCK DIAGRAM 13 EXPLODED VIEW 14 ASSEMBLE AND DISASSEMBLE 15 TROUBLE SHOOTING 20 ...

Page 3: ...he module from the ESD as it may damage the electronic circuit C MOS Make certain that treatment person s body are grounded through wrist band Do not leave the module in high temperature and in areas of high humidity for a long time The module not be exposed to the direct sunlight Avoid contact with water as it may a short circuit within the module If the surface of panel become dirty please wipe ...

Page 4: ...any electrostatic charge on your body by touching a known earth ground Alternatively 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 prev...

Page 5: ...the solder joints of the two original leads If they are 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 replac...

Page 6: ...OK 6 General Scope External SW Adj Joystick Power off Menu Input Exit Checked OK Function Picture Mode Ratio Smart Energy Saving Six Color Audio Volume Speaker Checked OK 7 Power Cord Length 1 55 0 05M 1 56M OK Refer to Suffix standard and power cord table Weight 0 17kg 10 0 165kg OK Color Black Checked OK 8 Cable DisplayPort Length 1 8 0 05 M EAD63749404 Weight 0 11kg 10 Color Black Impedance 1 C...

Page 7: ...tment Hard coating 3H Anti Glare treatment of the front polarizer Operating Mode Transmissive mode Normally Black Back light Unit White LED R T msec 14 Typ GTG_AVR Standard Measurement Condition 1 Ambient Luminance Level dark 10 lux 2 Ambient Temperature Normal Temperature 10 25 3 Warm up Time More than 30min at Full White Pattern 4 Input Signal VESA 2560 1080 60Hz 5 Contrast 70 6 Brightness Max 1...

Page 8: ...0 806 768 3 6 29 6 H Pixels 78 75 60 123 1312 1024 16 96 176 1024 x 768 V Lines 75 029 800 768 1 3 28 7 H Pixels 81 62 53 697 1520 1152 64 120 184 1152 x 864 V Lines 60 895 864 1 3 27 8 H Pixels 74 25 45 1650 1280 110 40 220 1280x720 V Lines 60 750 720 5 5 20 9 H Pixels 108 63 981 1688 1280 48 112 248 1280 x1024 V Lines 60 02 1066 1024 1 3 38 10 H Pixels 135 79 976 1688 1280 16 144 248 1280 x 1024...

Page 9: ...ining and service purposes Ͳ 9 Ͳ LGE Internal Use Only Main Recommended Timing HDMI Video input 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 10: ...HDMI1 2 FreeSync 2 0 DisplayPort DisplayPort FreeSync 640 480 60 67 72 75 720 400 70 88 720 480 60 59 94 800 600 56 60 72 75 832 624 75 1024 768 87 I 60 70 75 120 1152 864 60 1152 870 75 1280 720 60 1280 800 60 1280 1024 60 75 1600 900 60 1680 1050 60 1920 1080 60 75 2560 1080 30 29 99 50 49 99 60 59 98 75 74 99 VF min Hz 56Hz 56Hz 40Hz 56Hz 40Hz VF max Hz 75Hz 75Hz 75Hz 75Hz 75Hz HF min kHz 30kHz...

Page 11: ...On Click the Joystick Power button 6 Select the Menu Copyright 2017 LG Electronics Inc All right reserved Only for training and service purposes Ͳ 11 Ͳ LGE Internal Use Only 7 you can see Service Menu at the top left side and you can get information from it Ā2 How to update the F Wā refer to Next Page 1 Connect Mstar Jig to monitor and PC ...

Page 12: ...I cable and select ĀConnectā button 3 Select ĀReadā button 1st and find bin file 2nd and then check the checksum value 3th 4 SelectĀAutoābutton 1st and confirm the checkbox settings 2nd and then selectĀRunābutton 3th Please make sure that ĀFile Areaā option is selected 5 After ISP is completed do factory reset in the OSD main menu ...

Page 13: ...al Use Only BLOCK DIAGRAM Main 140 150 LVDS 51pin Headphone JK500 HDMI JK101 DP Input JK102 LED Driver IC 503 EEPROM IC200 Flash Memory IC201 RTD2556UT Scaler IC202 LED P502 From Scaler HP AMP IC501_OP T Control P200 Speaker P700 Audio AMP IC700 From Scaler LED Driver IC 504 LED P503 LVDS 40pin DC Jack 19V ...

Page 14: ... safety related 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 300 200 540 510 500 330 400 910 900 120 ...

Page 15: ...c All right reserved Only for training and service purposes Ͳ 15 Ͳ LGE Internal Use Only Disassemble method Fig 1 Place the monitor s screen face down on a soft cloth Fig 2 Disassemble the Stand body with pulling down the button ඟ Gk ...

Page 16: ... Inc All right reserved Only for training and service purposes Ͳ 16 Ͳ LGE Internal Use Only Fig 3 Remove the Screw 4EA and disassemble the back cover Fig 4 Disassemble the back cover Latch Type Fig 5 Remove the Speaker 2EA Tape 2EA ...

Page 17: ...t 2017 LG Electronics Inc All right reserved Only for training and service purposes Ͳ 17 Ͳ LGE Internal Use Only Disassemble method Fig 6 Disassemble the FFC cable 2EA cable 2EA Fig 7 Disassemble the Screw 2EA ...

Page 18: ...yright 2017 LG Electronics Inc All right reserved Only for training and service purposes Ͳ 18 Ͳ LGE Internal Use Only Disassemble method Fig 7 Disassemble the Metal frame assy Fig 8 Disassemble the cabinet ...

Page 19: ...Copyright 2017 LG Electronics Inc All right reserved Only for training and service purposes Ͳ 19 Ͳ LGE Internal Use Only Disassemble method Fig 9 Disassemble the main PCB and joy stick cover ...

Page 20: ...o Power First of all Check whether there is SVC Bulletin in GCSC System for these model No power issue CHECK JK400 PIN4 19 V YES YES YES YES YES IS IC503 PIN15 19V PIN16 5V CHECK ADAPTER NO NO NO NO NO CHECK IC503 CHECK IC504 CHECK IC407 CHECK CRYSTAL X200 IS IC504 PIN16 3 3V IS IC407 PIN6 1 1V IS IC202 PIN140 PIN141 PULSE CHECK IC202 ...

Page 21: ...al Use Only Trouble shooting No Screen on No Raster OSD is not displayed CHECK P200 PIN1 3 3V YES YES YES YES NO NO NO CHECK IC504 PIN16 3 3V 1 CHECK IC202 2 Trouble in IC202 CHECK IC202 PIN140 PIN141 14 3MHz CHECK IC202 PIN79 PIN80 SCL SDA CHECK CONNECTION From HDMI to IC202 Trouble in cable or LCD module ...

Page 22: ...erved Only for training and service purposes 22 LGE Internal Use Only Trouble shooting Trouble in DPM CHECK the signal input YES YES NO NO CHECK PC PC is going to the DPM mode CHECK signal cable DET pin Trouble in IC202 CHECK signal cable connection ...

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