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LG Flatron 27EA63V Service Manual

LG Flatron 27EA63V Manual Online:

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LG Flatron 27EA63V User Manual
LG Flatron 27EA63V User Guide
LG Flatron 27EA63V Online Manual

Text of LG Flatron 27EA63V User Guide:

  • LG Flatron 27EA63V, COLOR MONITOR SERVICE MANUAL Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CHASSIS NO. : LM13E MODEL: ( ) **Same model for Service Internal Use Only 27EA63V (27EA63V-*B)

  • - 2 - CONTENTS SPECIFICATIONS ................................................... 2 PRECAUTIONS ....................................................... 4 TIMING CHART ....................................................... 8 DISASSEMBLY ....................................................... 9 BLOCK DIAGRAM ................................................. 11 DESCRIPTION OF B

  • LG Flatron 27EA63V, - 3 - WARNING FOR THE SAFETY-RELATED COMPONENT. • There are some special components used in LCD monitor that are important for safety. These parts are marked on the schematic diagram and the replacement parts list. It is essential that these critical parts should be replaced with the manufacturer’s specified parts to prevent electric shock, fire or other hazard. • Do not modify original design without obtaining written permission from manufacturer or you will void the original parts and labor guarantee. TAKE CARE DURING HANDLING THE LCD MODULE WITH BACKLIGHT UNIT. • Must mount the module using mounting holes arranged in four corners. • Do

  • - 4 - SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS on page 3 of this publication. NOTE: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 3 of this publication, always follow th

  • LG Flatron 27EA63V, - 5 - General Soldering Guidelines 1. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range or 500F to 600F. 2. Use an appropriate gauge of RMA resin-core solder composed of 60 parts tin/40 parts lead. 3. Keep the soldering iron tip clean and well tinned. 4. Thoroughly clean the surfaces to be soldered. Use a mall wire-bristle (0.5 inch, or 1.25cm) brush with a metal handle. Do not use freon-propelled spray-on cleaners. 5. Use the following unsoldering technique a. Allow the soldering

  • LG Flatron 27EA63V, - 6 - Circuit Board Foil Repair Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit board causing the foil to separate from or "lift-off" the board. The following guidelines and procedures should be followed whenever this condition is encountered. At IC Connections To repair a defective copper pattern at IC connections use the following procedure to install a jumper wire on the copper pattern side of the circuit board. (Use this technique only on IC connections). 1. Carefully remove the damaged copper pattern with a sharp knife. (Remove only as much copper as absolutely necessary).

  • LG Flatron 27EA63V, TIMING CHART - 7 - Copyright Only for training and service purposes LGE Internal Use Only 2010 LG Electronics. Inc. All right reserved. A B C D E F Video Sync MODE CLASSIF ICATION Polar ity DOT CLOCK [MHz] Frequency [kHz]/ [Hz] Total Period (E) Display (A) Front Porch (D) Sync. (C) Back Porch (B) Resolut ion H(Pixels) - 31.468 900 720 18 108 54 1 V(Lines) + 28.321 70.08 449 400 12 2 35 720 X 400 H(Pixels) - 31.469 800 640 16 96 48 2 V(Lines) - 25.175 59.94 525 480 10 2 33 640 x 480 H(Pixels

  • LG Flatron 27EA63V, - 9 - BLOCK DIAGRAM Copyright Only for training and service purposes LGE Internal Use Only 2010 LG Electronics. Inc. All right reserved. 6 Keys : Power/MENU/MY KEY/ FUNCTION/AUTO/INPUT(Exit) 19V From Adapter 19-to-5V DC/DC 5V-to-3.3V LDO 5V-to1.2V LDO LED B/L T-Con 5V System 3.3V Core 1.2V NT68773 (Novatek) RGB R/G/B/H/V 4M SERIAL Flash LED PANEL (Blade5 F.HD) LVDS RGB IIC V_LED F/B SPI Data/ CLK 24C02 DVI_TMDS DVI IIC H/P HP L/R out Key IIC LED (RED) DVI-D 24C02 HDMI_TMDS HDMI IIC HDMI Embedded LED Driver Block

  • LG Flatron 27EA63V, DESCRIPTION OF BLOCK DIAGRAM Copyright 2010 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes 1. Video Controller Part. This part amplifies the level of video signal for the digital conversion and converts from the analog video signal to the digital video signal using a pixel clock. The pixel clock for each mode is generated by the PLL. The range of the pixel clock is 25Mhz ~ 148.5MHz. This part consists of the Scaler, ADC converter, TMDS receiver and LV

  • LG Flatron 27EA63V, - 11 - ADJUSTMENT Windows EDID V1.0 User Manual Operating System: MS Windows 98, 2000, XP Port Setup: Windows 98 => Doesn’t need setup Windows 2000, XP => Need to Port Setup. This program is available for LCD Monitor only. 1. Port Setup a) Copy “UserPort.sys” file to “c:\WINNT\system32\drivers” folder b) Run Userport.exe c) Remove all default number d) Add 300-3FF e) Click Start button. f) Click Exit button. 2. EDID Read & Write 1) Run WinEDID.exe 2) Edit Week of Manufacture, Year of Manufacture, Serial Number a) Input User Info Data b) Click “Update” button c) Click “ Write” button Copyright Only

  • - 12 - 220 IBM Compatible PC PARALLEL PORT Power inlet (required) Power LED ST Switch Power Select Switch (110V/220V) Control Line Not used RS232C PARALLEL V-SYNC POWER ST VGS MONITOR E E V-Sync On/Off Switch (Switch must be ON.) F F A A B B C C 15 10 5 5 69 1 1 1 14 13 25 6 5V 5V 5V 4.7K 4.7K 4.7K 74LS06 74LS06 OFF ON OFF ON 11 Video Signal Generator Figure 1. Cable Connection SERVICE OSD

  • LG Flatron 27EA63V, - 1 3 - TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK IC100 NO NO NO YES YES YES 1 2 13 14 Waveforms 1 JK100#1 2 IC102#3 3 IC103#1 4 Copyright Only for training and service purposes LGE Internal Use Only 2010 LG Electronics. Inc. All right reserved. IS ADAPTER VOLTAGE 19V? IS IC102 PIN 3(5V)? "IS IC 103 PIN1 (3.3V), PIN3 (1.2V)?" IC100#45,46 5V Check IC100 PIN 45,46 PULSE YES NO CHECK CRYSTAL(X100) CHECK Adapter CHECK IC 103 PIN1(3.3),PIN CHECK IC102(5V) PIN3(1.2V)

  • LG Flatron 27EA63V, - 1 4 - 2. NO RASTER (OSD IS NOT DISPLAYED) - MAIN 1.CHECK IC100 PIN 45,46 SOLDRING CONDITION 2.CHECK IC100 3.TROUBLE IN IC100 NO NO CHECK IC100PIN 45,46 PULSE CHECK CONNECTION LINE FROM D-SUB TO IC100 TROUBLE IN CABLE OR LCD MODULE YES NO RASTER (OSD IS NOT DISPLAYED) YES 1 Copyright Only for training and service purposes LGE Internal Use Only 2010 LG Electronics. Inc. All right reserved. CHECK IC100 PIN 39,40 PULSE

  • LG Flatron 27EA63V, - 1 5 - 3. TROUBLE IN DPM TROUBLE IN DPM TROUBLE IN IC100 CHECK PC PC IS GOING INTO DPM MODE NO CHECK H/V SYNC LINE NO YES CHECK IC100 PIN 39 HSYNC, PIN40 VSYNC YES 1 H-SYNC 2 V-SYNC Waveforms 1 2 Copyright Only for training and service purposes LGE Internal Use Only 2010 LG Electronics. Inc. All right reserved. CHECK JK202 PIN13 H sync, PIN 14 V sync?

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