LG 27UD59 Service Manual
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LG 27UD59 Service Manual

Color monitor chassis no. : lm6ha
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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : LM6HA
MODEL:
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL62449347(1706-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
27UD59
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
Printed in China
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Summary of Contents for LG 27UD59

  • Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LM6HA 27UD59 MODEL: CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL62449347(1706-REV00) Printed in China...
  • Page 2 CAUTION Please use only a plastic screwdriver to protect yourself from shock hazard during service operation. Copyright © 2010 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...
  • Page 3 Copyright © 2010 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • Page 4 CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright © 2010 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
  • Page 5 Length : 1.8m / Shape : Detachable Type SET accessory / DP to Mini DP / Color : black P/N : EAD63127601(Ver1.2) Weight : 0.105kg Copyright © 2010 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 6 SET accessory / Refer to BOM Support Free-Sync function P/No Specification 27” Module Applying module list LM270WR3-SPA1 EAJ63871001 23.8” Module LM238WR2-SPD1 EAJ63871201 Copyright © 2010 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 Cabinet : High glossy + Texture Back cover : Texture Appearance General Stand body : High glossy Base : High glossy Copyright © 2010 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 Full red pattern 0.250 0.652 0.334 0.307 GREEN RGB COLOR coordi 0.637 Typ-0.03 Typ+0.03 nates 0.150 BLUE 0.060 Copyright © 2010 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 :100 – 240 Vac, 50 or 60Hz DisplayPort 10-bit color Color depth HDMI1 / HDMI2 Deep Color(10bit, 12bit) Impedance HDMI 100 ohm(-+10%) Copyright © 2010 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 1 – 100 Quick Volume 1 – 100 Menu Settings Input HDMI1 / HDMI2 / DP Ratio Wide / Original Copyright © 2010 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 11 Gamma Gamma 2 / off Color Temp Custom/Warm/Medium/Cool Color 0 -100 Adjust Green 0 - 100 Blue 0 -100 Copyright © 2010 LG Electronics. Inc. All right reserved. -12 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 Off / 4H / 6H / 8H DP 1.2 Enable / Disable OSD Lock On / Off Reset Reset / Cancel Copyright © 2010 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 5.2 Open Source License If Need Open Source Use Manual License (in Web) Source (in Web) 27UD59 24UD59 Copyright © 2017 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 14 C: The Distance from The Top of Active Area to the Bezel D: The Distance from The Bottom of Active Area to the Bezel Copyright © 2010 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only...
  • Page 15 Special Item 6.1.1.1 HDMI1 EDID (HDMI1.4) 1) Physical Address : HDMI1=10 6.1.1.2 HDMI1 EDID (HDMI1.4) 1) Physical Address : HDMI1=20 Copyright © 2010 LG Electronics. Inc. All right reserved. - 16- LGE Internal Use Only Only for training and service purposes...
  • Page 16 2.1.1.3 HDMI2 EDID (HDMI2.0) 2.1.1.4 HDMI1 EDID (HDMI2.0) Copyright © 2010 LG Electronics. Inc. All right reserved. - 17- LGE Internal Use Only Only for training and service purposes...
  • Page 17 2.1.2 DP EDID (DP1.2) Copyright © 2010 LG Electronics. Inc. All right reserved. - 18- LGE Internal Use Only Only for training and service purposes...
  • Page 18 2.1.3.1 DP EDID of FREE-SYNC ON Extended mode 2.1.3.1 DP EDID of FREE-SYNC ON Basic mode Copyright © 2010 LG Electronics. Inc. All right reserved. - 19- LGE Internal Use Only Only for training and service purposes...
  • Page 19 3840 x 2160 V(Lines) 2222 2160 H(Pixels) 133.32 4000 3840 3840 x 2160 V(Lines) 2222 2160 2) Main Recommended Timing Copyright © 2010 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 20 3840 x 2160 V(Lines) 2250 2160 H(Pixels) 4400 3840 3840 x 2160 V(Lines) 2250 2160 2) Main Recommended Timing Copyright © 2010 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 -. HDCP 2.2 KEY (New, Refer to 27MU67/27UD68/27UD88 Writing process) a. Write HDCP Key into EEPROM by using DDC2AB protocol & HDCP Adjustment Jig equipment. If error is occurred, try to write again. Copyright © 2017 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only...
  • Page 22 *Note : 1) When in DC OFF Condition 2) and push the Menu Button and On Button at the same time for about 3 secoemd Copyright © 2010 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only...
  • Page 23 Operating Condition LED(SET) Wattage(W) or Video (MSPG6100) Sleep mode Off/Off White blinking 0.5W Off mode DC Switch Off 0.3W Copyright © 2010 LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only Only for training and service purposes...
  • Page 24 Green Color Adjust Blue Six Color (Hue/Saturation) Reset Language Depend on the sale region Smart Energy General Saving Copyright © 2010 LG Electronics. Inc. All right reserved. - 25 - LGE Internal Use Only Only for training and service purposes...
  • Page 25 00-64 BRIGHT(Backlight) 00-64 Tune Analog Bright FACTORY RESET Factory reset AUTO COLOR Tuning AUTO_COLOR_ADJUST 0:Auto color COLOR_MODE_CHANG 6500K Copyright © 2010 LG Electronics. Inc. All right reserved. - 26 - LGE Internal Use Only Only for training and service purposes...
  • Page 26 PROM Slave Address(A0,A2,A4,A6,A8,AA,AC,AE), Not 00h(Reserved by Buffer To EEPROM) ADL : E PROM Sub Address(00~FF) Data : Write data Delay : 20ms 6.5.2. Command Set Copyright © 2010 LG Electronics. Inc. All right reserved. - 27 - LGE Internal Use Only Only for training and service purposes...
  • Page 27 5-Page 0~7F Read 5-Page 80~FF Read 6-Page 0~7F Read 6-Page 80~FF Read 7-Page 0~7F Read 7-Page 80~FF Read Copyright © 2010 LG Electronics. Inc. All right reserved. - 28 - LGE Internal Use Only Only for training and service purposes...
  • Page 28 START START Data1 . . . Data128 A STOP - 128 Byte transfer of EDID Buffer of MICOM Copyright © 2010 LG Electronics. Inc. All right reserved. - 29 - LGE Internal Use Only Only for training and service purposes...
  • Page 29 BLOCK DIAGRAM (Main) Copyright © 2010 LG Electronics. Inc. All right reserved. - 30 - LGE Internal Use Only Only for training and service purposes...
  • Page 30 Is IC 400 CHECK IC400 PIN2(3.3V) Is IC200 CHECK CRYSTAL X200 PIN95,PIN96 PULSE CHECK IC200 X200 IC401-#2 IC401-#3 IC400 Copyright © 2010 LG Electronics. Inc. All right reserved. -31 - LGE Internal Use Only Only for training and service purposes...
  • Page 31 2. Trouble in IC200 12MHz CHECK CONNECTION Is IC200 PIN3 From HDMI TO IC200 PIN4 I2C Trouble in cable or LCD module Copyright © 2010 LG Electronics. Inc. All right reserved. -32 - LGE Internal Use Only Only for training and service purposes...
  • Page 32 CHECK PC. PC is going to the Check the Signal DPM mode input CHECK Signal cable Check Signal connection cable DET pin Trouble in IC200 Copyright © 2010 LG Electronics. Inc. All right reserved. -33 - LGE Internal Use Only Only for training and service purposes...
  • Page 33 3. Assemble and disassemble method ■ Disassemble method 1.Remove the Screw 1EA 1. Remove the stand 1. Disassemble the Rear shield assy and hinge assy and all cable. 1.Disassemble from top ->left/right ->top corner . 1.The open status top/side of both , one hand was supported module, and open the Back cover.
  • Page 34 X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 35 PORT NO.:HDMI1 (HDMI2.0) Headphone AMP HDMI2.0 SWITCH IC100 TPA6138A2 20150820 Request from component development team JK100 SEL1 SEL2 before : EAG61491201 YKF45-7058V after : EAG59023302 => HDMI 1 +INR +INL C121 C320 C323 => HDMI 2 R141 R148 180pF C341 180pF R135 R153...
  • Page 36 +5V_STANDBY P201 MODULE-eDP Joystick Key IIC for Debugging 05030HR-H30C1(G) (from MP, delete this parts) DE_BUG P202 12507WS-04L +3.3V_NORMAL +3.3V_NORMAL L202 DE_BUG P200 BLM15PX121SN1 AR207 RED LED OPT 12507WR-08L JP202 DE_BUG C200 AR200 JP201 +3.3V_NORMAL R213 R214 3.3K 3.3K EDP3- R216 JP204 EDP3+ KEY1...
  • Page 37 MAIN IC POWER LINE - CAPACITOR +3.3V_NORMAL +1.8V_DDR VDD_DRAM_A AVDD_PLL +1.15V_VDD_DDR_A L111 +1.15V_VDD close to Q1 L116 close to Q1 BLM18PG121SN1D BLM18PG121SN1D L100 close to Q1 C175 C181 C187 BLM18PG121SN1D C191 C196 C213 C255 10uF 10uF 0.1uF 0.1uF 0.1uF C233 C241 ->...
  • Page 38 SCALER DC-DC BLOCK P400 +12V JP400 SMAW200-12 R416 PD_CTLZ_1.8V +1.8V_DDR C421 20160310 CJLIM +5V_STANDBY 0.1uF IC404 C410 C409 VI idea 68uF 0.1uF APW7415 L407 R407 4.7uH 20160224 CJLIM HW Board test R447 C450 C444 C452 C454 0.1uF 0.1uF 10uF 10uF ZD401 R448 C405...
  • Page 39 +12V +12V_AMP AUDIO AMP : Full Range R523 AMP_12V (AD : Low) +3.3V_AMP Q503 SSM3J332R L504 10.0uH AMP_RESET_N Idc : 2.4A R503 C506 L501 C507 4.7K 1000pF R504 C531 C529 22000pF R518 C527 BLM18PG121SN1D audio bit clk 2.2uF 4.7uF C523 R508 +3.3V_NORMAL AUD_SCK...

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