LG 32BN88U Service Manual Download Page 13

Page: 13 / 17

Only training and service purposes.

TROUBLE SHOOTING GUIDE

Trouble shooting Guide : No Power

Replace IC601&

Recheck

Check C410 or C404

Voltage Level (19V)

Check Power connector

OK ?

Replace Adapter

Check IC403 Output

Voltage Level (3.3V)

Replace IC403 &

Recheck

Check IC601 Output (pin#16)

Voltage Level (5V)

Replace IC400 &

Recheck

Check IC400 Output

Voltage Level (1.1V)

Check IC600 Output(pin#16)

Voltage Level (10V)

Check IC404 Output

Voltage Level (1.1V)

Check IC407 Output

Voltage Level (1.8V)

Replace IC600 &

Recheck

Replace IC404 &

Recheck

Replace IC407 &

Recheck

Summary of Contents for 32BN88U

Page 1: ...imile or other electronic means publication modification copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual The material covered by this prohibition includes without limitation any text graphics or logos in this Service Manual P NO MFL69413828 2006 REV00 LM...

Page 2: ... 2 Copyright LG Electronics Inc All rights reserved Only training and service purposes CONTENTS 2 SAFETY PRECAUTIONS 3 SPECIFICATION 4 BLOCK DIAGRAM 7 EXPLODED VIEW 8 TROUBLE SHOOTING GUIDE 9 CONTENTS ...

Page 3: ...l 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 in turn to each exposed metallic parts such as antenna terminals phone jacks etc If the exposed meta...

Page 4: ... Display Port 1 4 1 2 1 1 Checked Display Port 1 4 for HDR function USB C IN Display Port 1 4 1 2 1 1 PD 60W USB Data Checked PD Power delivery USB DN USB 3 0 Downstream x 2 Checked Do not support Quick charging H P OUT Audio L R Checked RS 232C N A Checked Do not support Length 1 55 0 05m 1 55m Refer to Suffix standard and power cord Table Power Cord Weight 0 174kg 10 0 173kg Color Black Checked ...

Page 5: ... FreeSync Range 48 60 Hz Basic 40 60 Hz Extended Vertical Checked Horizontal 30 135kHz Checked USB C Vertical 40 60 Hz Checked Native 60Hz Max 3840 2160 60Hz HDMI ULTRA HD Deep Color ON When HDMI ULTRA HD Deep Color off Max V Frequency is 30Hz in 3840 2160 HDMI Checked Recommen 3840 2160 60Hz Max 3840 2160 60Hz 3 Resolution Single DP Checked Recommen 3840 2160 60Hz d Max 3840 2160 60Hz USB C Check...

Page 6: ... OSD Brightness 70 Off On Sleep Mode On Off Off Off 0 5W 0 3W Off Off Off On PC Stand by Mode Sleep Mode Input HDMI DP USB C On Off Off Off 0 5W 0 3W For CEL regulation Off Off Off Mode Off 0 3W 0 25W DC Switch Off White OSD setting Outgoing Condition OSD Brightness 70 ERP On On Test video Off after 39 97W 36 1W Refer to Erp test condition 15sec ErP A Class 39 97 W CEC outgoing Brightness setting ...

Page 7: ...cked for HDR Signal There are 5 functions as below 1 Custom 2 Vivid 3 Cinema 4 FPS 5 RTS Calibration2 Default Disable When the Customer calibrate this menu with TRUE Color PRO this menu will be enabled Black Stabilizer 0 100 Checked Step 5 Gamma Mode1 Mode2 Mode3 Mode4 Checked Color Temp Custom Warm Medium Cool Manual Checked Red 0 100 Checked Green 0 100 Checked Blue 0 100 Checked Color Adjust Re...

Page 8: ...On Off Checked English German French Spanish Italian Swedish Finnish Portuguese Portuguese brazil Polish Russian Greek Ukrainian Chinese Traditional Chinese Japanese Korean Hindi Language Checked General Smart Energy Saving High Low Off Checked Power LED On Off Checked Automatic Standby 8H 6H 4H Off Checked DisplayPort Version 1 4 1 2 1 1 Checked HDMI ULTRA HD Deep Color On Off Checked Buzzer On O...

Page 9: ...es 59 94 525 480 10 2 33 H Pixels 37 879 1056 800 40 128 88 2 40 800 x 600 V Lines 60 317 628 600 1 4 23 H Pixels 48 363 1344 1024 24 136 160 3 65 1024 x 768 V Lines 60 806 768 3 6 29 H Pixels 67 5 2200 1920 88 44 148 4 138 5 1920 x 1080 V Lines 60 1125 1080 4 5 36 H Pixels 88 79 2720 2560 48 32 80 5 241 50 2560 x 1440 V Lines 59 95 1481 1440 3 5 33 H Pixels 66 66 4000 3840 8 144 8 6 297 00 3840 x...

Page 10: ...Lines 59 94 525 480 10 2 33 H Pixels 37 879 1056 800 40 128 88 2 40 800 x 600 V Lines 60 317 628 600 1 4 23 H Pixels 48 363 1344 1024 24 136 160 3 65 1024 x 768 V Lines 60 806 768 3 6 29 H Pixels 67 5 2200 1920 88 44 148 4 138 50 1920 x 1080 V Lines 60 1125 1080 4 5 36 H Pixels 88 79 2720 2560 48 32 80 5 241 50 2560 x 1440 V Lines 59 95 1481 1440 3 5 33 H Pixels 66 66 4000 3840 8 144 8 6 297 00 38...

Page 12: ...assis have special safety related characteristics These parts are identified by in the 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 330 120 930 920 520 ...

Page 13: ... Power connector OK Replace Adapter Y N Y Check IC403 Output Voltage Level 3 3V Replace IC403 Recheck Y N Check IC601 Output pin 16 Voltage Level 5V Replace IC400 Recheck Y Check IC400 Output Voltage Level 1 1V Y N Check IC600 Output pin 16 Voltage Level 10V Y Check IC404 Output Voltage Level 1 1V Y Check IC407 Output Voltage Level 1 8V Replace IC600 Recheck N Replace IC404 Recheck N Replace IC407...

Page 14: ...oses Trouble shooting Guide No Screen on Check WLED_ENABLE High IC600 IC601 27pin Module Back Light On N Y Y Check LED Driver Output P600 P602 1 2 3 4 5 6 Replace LED Driver IC N Check Panel Power 10V IC600 Check IC600 Output 10V Replace IC600 Recheck N Y Replace T con Board or Module ...

Page 15: ...ervice purposes Trouble shooting Guide No video HDMI Check input signal format is it support Y Check HDMI Cable for Damage or Open Connector Y Replace the Connector Check JK100 JK101 for proper connection or Damage Y N Check IC200 I2C Signal 1 2 155 156 Replace the IC200 N ...

Page 16: ... and service purposes 8 c Trouble shooting Guide No video DP Replace the IC200 N Check input signal format is it support Y Check DP Cable for Damage or Open Connector Y Check IC200 AUX Signal 54 55 Replace the Connector Check JK102 for proper connection or Damage Y N ...

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