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LG 27UL600, Service Manual

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LG 27UL600 Service Manual Download Page 11

TROUBLESHOOTING GUIDE

1. NO POWER

N

Check Power connector

OK ?

Replace Adapter

Y

N

Y

Y

N

Replace  IC601 &

Recheck

N

Y

Replace IC202 Flash Memory

Y

Check  JP400,JP401

Voltage Level (19V)

Check  IC601 Output

Voltage Level (+3.3V)

Check IC405,IC403, IC404Output

Voltage Level (5V,1.8V, 1.15V)

Replace IC405,IC403, IC404

&Recheck

Check X200 Clock 12MHz

Replace X200

Summary of Contents for 27UL600

Page 1: ...Internal Use Only CHASSIS MODEL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL SERVICE MANUAL LED MONITOR SERVICE MANUAL LM8CA 27UL600 P NO MFL69406853 1810 REV00 ...

Page 2: ...k 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 metallic part has a return path to th...

Page 3: ...io L R Checked RS 232C N A N A 8 Power Cord Length 1 55 0 05m 1 55m Refer to Suffix standard and power cord Table Weight 0 174kg 10 0 173kg Color White Checked 9 Cable Phone to RS 232 Length 0 2 0 01m N A Do not provide Weight 0 02kg 10 N A Color Black N A USB C To C Cable Length 1 8 0 03m N A Do not provide Weight 0 0775kg 5 N A Color White N A Impedance 1 CABLE 90 Ω 15Ω 2 CONNECTOR 90 Ω 10Ω N A ...

Page 4: ...37 5 H Pixels 74 250 45 00 1650 1280 110 40 220 1280 x 720 Checked V Lines 60 00 750 720 5 5 20 6 H Pixels 83 5 49 702 1680 1280 72 128 200 1280 x 800 Checked V Lines 59 810 831 800 3 6 22 7 H Pixels 108 63 981 1688 1280 48 112 248 1280 x 1024 Checked V Lines 60 02 1066 1024 1 3 38 8 H Pixels 108 00 60 00 1800 1600 24 80 96 1600 x 900 Checked V Lines 60 00 1000 900 1 3 96 9 H Pixels 148 5 67 5 220...

Page 5: ...5 20 6 H Pixels 83 5 49 702 1680 1280 72 128 200 1280 x 800 Checked V Lines 59 810 831 800 3 6 22 7 H Pixels 108 63 981 1688 1280 48 112 248 1280 x 1024 Checked V Lines 60 02 1066 1024 1 3 38 8 H Pixels 108 00 60 00 1800 1600 24 80 96 1600 x 900 Checked V Lines 60 00 1000 900 1 3 96 9 H Pixels 148 5 67 5 2200 1920 88 44 148 1920 x 1080 Checked V Lines 60 1125 1080 4 5 36 10 H Pixels 277 25 133 29 ...

Page 6: ...BLOCK DIAGRAM ...

Page 7: ...he 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 510 500 300 310 200 540 or 330 520 910 400 900 920 930 ...

Page 8: ...Assembly Disassembly Disassembly method Fig 1 Place the monitor s screen face down on a soft cloth Fig 2 Disassemble the Stand Base with disassemble the screw Fig 3 disassemble the top cover ...

Page 9: ...Fig 4 Remove the screw 2EA and disassemble stand body Fig 5 Remove the Screw 1EA and disassemble the back cover ...

Page 10: ...Fig 6 Remove the tape and cable and speaker and control PCB assy Fig 7 Remove the screw 3ea and disassemble the rear shiled assy Fig 8 Remove the screw 9ea and disassemble the Cabinet ...

Page 11: ...apter Y N Y Y N Replace IC601 Recheck N Y Replace IC202 Flash Memory Y Check JP400 JP401 Voltage Level 19V Check IC601 Output Voltage Level 3 3V Check IC405 IC403 IC404Output Voltage Level 5V 1 8V 1 15V Replace IC405 IC403 IC404 Recheck Check X200 Clock 12MHz Replace X200 ...

Page 12: ... Module Back Light On Y N N Replace IC402 Recheck Y N Replace T Con Board or Module Y Check IC 601 Replace Main Scaler IC Check Panel Power 10V JP209 Check WLED_ENABLE High IC601 Pin 27 Check e DP Cable for Damage or Open Conductors ...

Page 13: ...on Is it supported Check JK100 or JK101 for proper connection or Damage Replace Connector Y N Check HDMI 5V from Source PC JK100 and JK101 Pin No 18 Re Download EDID Data Y N Y Check HDMI Cable for Damage or Open Connector Y Replace Main Scaler IC200 ...

Page 14: ...lace Main Scaler IC200 Check signal format and resolution Is it supported Check JK801 for proper connection or Damage Replace Connector Y N Check AUX Signal R137 or R142 Y Y Check DP Cable for Damage or Open Connector Y ...

Page 15: ...ain Scaler IC200 Check input signal format Is it supported Check JK801 for proper connection or Damage Replace Connector Y N Check AUX Signal R876 or R890 Y Y Y Check USB CCable for Damage or Open Connector N ReplaceIC801 ...

Page 16: ...d H P Replace Main Scaler IC200 Check the Input source Check the sound setting in PC Setting like a right image Y N Check JK501 Soldering Do re soldering Y N Y Check Cable status for Damaged or Open Connector Y ...

Page 17: ...nd Speaker Check the Input source Check Speaker Cable is connected Connect the Cable correctly Y N Replace Speaker and Check the status Replace Main Scaler IC200 N Y Check Cable for Damaged or Open Connector Y ...

Page 18: ......

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