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LG 882LE Service Manual

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Website:http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.html

COLOR MONITOR

SERVICE MANUAL

CHASSIS NO. : CL-10
FACTORY MODEL: LS882C
MODEL:
LCD 882LE
(LS882C-UA)
*(
) ID LABEL MODEL No.
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

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Summary of Contents for LG 882LE

  • Page 1: Color Monitor

    Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-10 FACTORY MODEL: LS882C MODEL: LCD 882LE (LS882C-UA) ) ID LABEL MODEL No. CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS SPECIFICATIONS ........... 2 DESCRIPTION OF BLOCK DIAGRAM....14 PRECAUTIONS ............4 ADJUSTMENT ............15 TIMING CHART ............5 TROUBLESHOOTING GUIDE ......16 OPERATING INSTRUCTIONS ........ 6 PRINTED CIRCUIT BOARD........22 CONTROL LOCATIONS ........10 EXPLODED VIEW...........25 WIRING DIAGRAM ..........10 REPLACEMENT PARTS LIST .......27 DISASSEMBLY ............
  • Page 3 Signal Connector Pin Assignment • 15pin VGA Connector Signal (D-Sub) Signal (D-Sub) Red Video N.C. Green Video Sync.Ground Blue Video Ground Ground Ground H. Sync. Red Ground V. Sync. Green Ground Blue Ground NOTE No. 5 Pin have to ground on the PC side. •...

  • Page 4: Precautions

    • Do not modify original design without obtaining written circuit. If the wires are pressed cause short and may burn or take fire. permission from LG or you will void the original parts and labor guarantee. CAUTION TAKE CARE DURING HANDLING THE LCD MODULE IF BRIGHTNESS OF THE LCD MODULE DARKEN, WITH BACKLIGHT UNIT.

  • Page 5: Timing Chart

    TIMING CHART VIDEO SYNC << Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> Sync Total Period Video Active Front Porch Sync Duration Back Porch Mode Resolution Frequency Clock Time (A) Polarity Sort 31.469 640x350 25.175...

  • Page 6: Operating Instructions

    OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW DVI - I port (Digital / Analog) D-Sub Signal Connector Power ON/OFF USB Port Button Power (DPMS) Indicator Power Jack Front Control Panel Buttons 1. Power Button 5. OSD Button SOURCE/SET 3. SOURCE/SET Button 2.
  • Page 7 On Screen Display (OSD) Control Adjustment Making adjustments to the image size, position and operating parameters of the monitor are quick and easy with the On Screen Display Control system. A quick example is given below to familiarize you with the use of the controls. Following section is an outline of the available adjustments and selections you can make using the OSD.
  • Page 8 OSD Adjust Description POSITION Vertical Position To move image up and down. Horizontal Position To move picture image left and right. CLOCK To minimize any vertical bars or stripes visible TRACKING on the screen background.The horizontal screen size will also change. CLOCK PHASE To adjust the focus of the display.

  • Page 9: Usb Connection

    Making use of USB (Universal Serial Bus)* USB(Universal Serial Bus) is an innovation in connecting your different desktop peripherals conveniently to your computer. By using the USB, you will be able to connect your mouse, keyboard, printer, and other peripherals to your monitor instead of having to connect them to your computer. This will give you greater flexibility in setting up your system.

  • Page 10: Control Locations

    CONTROL LOCATIONS Location.No Control Function POWER SWITCH DOWN LEFT RIGHT SOURCE/SET 2 3 4 WIRING DIAGRAM J801 J805 J807 J804 Connector Ass’y P/N: 6631T11010D - 10 -...

  • Page 11: Disassembly

    DISASSEMBLY 1. TILT/SWIVEL REMOVAL 3. INVERTER WIRE SHIELD & BACK COVER 1) Remove Hinge Cover. REMOVAL (Push the tilt cover both side). 1) Remove four screws (a). 2) Remove two screws (a). 2) Remove two Inverter Wire Shield. 3) Remove the Tilt/swivel. 3) Remove four screws (b).
  • Page 12 4. INVERTER SHIELD & REAR SHIELD REMOVAL 5. MAIN TOTAL ASS’Y REMOVAL 1) Remove sponge (a). 1) Disconnect CN2, CN3, CN4 and CN5. 2) Remove five screws (a). 2) Remove two screws (b). 3) Remove the Inverter Shield. 3) Remove two Aluminium Tape (b). 4) Remove six screws (c).

  • Page 13: Block Diagram

    BLOCK DIAGRAM - 13 -...

  • Page 14: Description Of Block Diagram

    DESCRIPTION OF BLOCK DIAGRAM 1. Input signal switching part. This part switch H/V sync and analog video signal to be entered through Port1 and Port2 and output a selected H/V sync and analog video signal. 2. Pre-amp/ ADC / PLL 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.

  • Page 15: Adjustment

    ADJUSTMENT All adjustment are thoroughly checked and corrected 2. Adjustment for Factory Preset Mode 1) Select DIST. ADJ → FOS DEFAULT command when the monitor leaves the factory, but sometimes several minor adjustment may be required. and Enter Adjustment should be following procedure and after 2) It will copy all factory default data to EEPROM warming up for a minimum of 10 minutes.

  • Page 16: Troubleshooting Guide

    TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) TROUBLE IN CHECK U718 ADAPTOR or INPUT VOLTAGE INVERTER (12V) ? CHECK TROUBLE IN 5VST VOLTAGE U718 (5V) ? CHECK U617’s PIN 6. TROUBLE IN IS THIS PIN U617 or X603 OSCILLATED? TROUBLE SOMEWHERE ELSE...
  • Page 17 2. NO RASTER NO RASTER CHECK TROUBLE IN J805 PIN 10 POWER ADATER (12V) ? CHECK TROUBLE IN J805 PIN 5 (5V) ? INVON PATTERN CHECK TROUBLE IN U617 PIN 42 U106, U105, U101, H. PULSE ? U109 CHECK TROUBLE IN U205 PIN 40 U102, U101, U109 H.PULSE ?
  • Page 18 CHECK CHECK U307 PIN 246 HS-PLL PATTERN H.PULSE ? CHECK CHECK U307 PIN 254 ADC-CLK PATTERN DOT CLOCK ? CHECK MEMORYCLK TROUBLE IN U410, U411, U412 U307 PIN 35 ? CHECK TROUBLE IN U307 PIN 93, 94 U307 DOT CLOCK ? CHECK TROUBLE IN U307 PIN 124...
  • Page 19 CHECK TROUBLE IN U513, U514 PIN 27 U307 H.PULSE ? CHECK TROUBLE IN U513, U514 PIN 28 U307 V.PULSE ? CHECK TROUBLE IN U513, U514 PIN 31 DOT CLOCK? U307 CHECK TROUBLE IN U513, U514 PIN 30 U307 H.PULSE? TROUBLE IN LCD MODULE - 19 -...
  • Page 20 3. NO CLOCK (CLOCK GENERATOR) NO DOT CLOCK CHECK TROUBLE IN U205 PIN 40 U101, U109, U105, H. PULSE ? U106 CHECK TROUBLE IN U205Vcc U729 3.3V ? CHECK TROUBLE IN U205 PIN 40 U101, U109, U105, H. PULSE ? U106 CHECK TROUBLE IN...
  • Page 21 4. TROUBLE IN DPM TROUBLE IN DPM CHECK PC CHECK CPC IS NOT GOING U109 PIN 1, 5 ? INTP DPM OFF MODE CHECK U617 (MICOM) TROUBLE IN PIN 1, 42 (H/V INPUT) U109 SIGNAL ? CHECK U617 PIN 6 TROUBLE IN WAVEFORM X603...

  • Page 22: Printed Circuit Board

    PRINTED CIRCUIT BOARD 1. MAIN BOARD (Component Side) R854 - 22 -...
  • Page 23 2. MAIN BOARD (Solder Side) C886 R850 R847 C761 C899 R845 R849 C885 L813 C800 R837 C765 R842 C768 C602 C636 R122 C104 C269 R120 R109 C271 C285 C283 C281 C106 R100 C276 C108 C279 C120 R111 C110 C277 R112 R101 C112 C275...
  • Page 24 3. CONTROL BOARD (Component Side) 4. CONTROL BOARD (Solder Side) - 24 -...
  • Page 25 - 25 -...

  • Page 26: Exploded View

    COVER LB880B BASE TOP 18.1" BRAND 3550TKK052C PWB(PCB) ASSEMBLY,SUB, LH881D XAGT H/PACKARD ZANSKAR TOTAL 6871TST197A ADAPTER, AC-DC, PSCV700101A SAMSUNG 100-240V 12V 5.8A FOR LG 6634TBZ006A SIGNAL CABLE UL 2990-9C(7.5) DT 1870MM GRAY(85964) LB500 DM 6866TD9001F CABLE, DVI, UL20276 DT 2000MM GRAY(85964) LB885C DM (DVI-I CABLE)

  • Page 27: Replacement Parts List

    REPLACEMENT PARTS LIST CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS, READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL. * NOTE SAFETY Mark AL ALTERNATIVE PARTS MODEL: Flatron LCD 882LE DATE: 2001. 5. 15. LOC. NO. PART NO. DESCRIPTION / SPECIFICATION REMARK...
  • Page 28 MODEL: Flatron LCD 882LE DATE: 2001. 5. 15. LOC. NO. PART NO. DESCRIPTION / SPECIFICATION REMARK C273 0CH3103K516 CAPACITOR, CHIP[CERAMIC LD-LESS HD], 10000PF 50V K B 2012 R/TP C274 0CH3104K566 CAPACITOR, CHIP[CERAMIC LD-LESS HD], 0.1UF 50V K X 2012 R/TP...
  • Page 29 MODEL: Flatron LCD 882LE DATE: 2001. 5. 15. LOC. NO. PART NO. DESCRIPTION / SPECIFICATION REMARK C498 0CH6100K116 CAPACITOR, CHIP[CERAMIC LD-LESS TC], 10PF 50V D NP0 2012 R/TP C499 0CH6100K116 CAPACITOR, CHIP[CERAMIC LD-LESS TC], 10PF 50V D NP0 2012 R/TP...
  • Page 30 MODEL: Flatron LCD 882LE DATE: 2001. 5. 15. LOC. NO. PART NO. DESCRIPTION / SPECIFICATION REMARK C875 0CH6150K416 CAPACITOR, CHIP[CERAMIC LD-LESS TC], 15PF 50V J NP0 2012 R/TP C876 0CH6150K416 CAPACITOR, CHIP[CERAMIC LD-LESS TC], 15PF 50V J NP0 2012 R/TP...
  • Page 31 MODEL: Flatron LCD 882LE DATE: 2001. 5. 15. LOC. NO. PART NO. DESCRIPTION / SPECIFICATION REMARK U412 0IEB121616A IC, ELITE MEMORY TECHNOLOGY, M12L16161A-7T 50P TSOP ST 16M U513 0ITH638300A IC, THINE MICROSYSTEMS, THC63LVDM83A,LVDS(THINE) U514 0ITH638300A IC, THINE MICROSYSTEMS, THC63LVDM83A,LVDS(THINE) U601...
  • Page 32 MODEL: Flatron LCD 882LE DATE: 2001. 5. 15. LOC. NO. PART NO. DESCRIPTION / SPECIFICATION REMARK R126 0RH0222D622 RESISTOR, CHIP, 22 1/10W 5 D.R/TP R127 0RH0222D622 RESISTOR, CHIP, 22 1/10W 5 D.R/TP R128 0RH0222D622 RESISTOR, CHIP, 22 1/10W 5 D.R/TP...
  • Page 33 MODEL: Flatron LCD 882LE DATE: 2001. 5. 15. LOC. NO. PART NO. DESCRIPTION / SPECIFICATION REMARK R612 0RH0000D622 RESISTOR, CHIP, 0 1/10W P-TYPE TAPPING R613 0RH1000D622 RESISTOR, CHIP, 100 1/10W 5 D.R/TP R614 0RH0000D622 RESISTOR, CHIP, 0 1/10W P-TYPE TAPPING...
  • Page 34 MODEL: Flatron LCD 882LE DATE: 2001. 5. 15. LOC. NO. PART NO. DESCRIPTION / SPECIFICATION REMARK 140-058E SWITCH, TACT, SKHV10910B LGEC NON 12V 20A HORIZENTAL 160G 0DZ560009CE DIODE, ZENER, MTZJ5.6B TP ROHM-K DO34 500MW 5.6V 5MA 26MM 0DZ560009CE DIODE, ZENER, MTZJ5.6B TP ROHM-K DO34 500MW 5.6V 5MA 26MM...
  • Page 35 6304TLT181S LCD(LIQUID CRYSTAL DISPLAY), LM181E1-J3MN(S) LGPHLIPS COLOR 18.1 INVERTER 6633TZA004A INVERTER ASSY, “SAMSUNG LG1801 FOR 18.1”” LCD MNT(LB880B)” ADAPTER 6634TBZ006A ADAPTER,AC-DC, PSCV700101A SAMSUNG 100-240V 12V 5.8A FOR LG A/SIGNAL 6634TFZ004A ADAPTER,SIGNAL, DVI-I(MAIL)-VGA(FMAIL) UNIXTAR LB885C S/CABLE 6866TD9001F SIGNAL CABLE, UL 2990-9C(7.5) DT 1870MM GRAY(85964) LB500 DM...

  • Page 36: Pin Configuration

    PIN CONFIGURATION MX88282 Digital Video Processor GNDP5 GNDP13 GNDP0 GNDP12 OSDGO1 OSDGO0 VSYNC-OUT DGM0 H-SYNC-OUT DGM1 VCCP4 GND5 ROA0 GNDP11 ROA1 MD15 ROA2 MD15 ROA3 MD13 ROA4 MD12 ROA5 MD11 ROA6 VDDP3V3 ROA7 MD10 GND3 MD09 GOA0 MD08 GOA1 MD07 GOA2 MD06 GOA3...
  • Page 37 SiI 161A PanelLink® Receiver Preliminary Datasheet Pin Configurations CONTROLS EVEN 8-bits RED QE13 QE12 QE11 QE10 OVCC OGND OGND OVCC QO10 QO11 SiI 161A QO12 100-Pin TQFP QO13 (Top View) QO14 QO15 SCDT QO16 STAG_OUT QO17 QO18 QO19 PIXS QO20 QO21 QO22 DIFFERNTIAL SIGNAL...
  • Page 38 Output Pins Description Pin # Description Type Name Output Even Data[23:0] corresponds to 24-bit pixel data for 1-pixel/clock input mode QE23- and to the first 24-bit pixel data for 2-pixels/clock mode. Sil161A Output data is synchronized with output data clock (ODCK). Diagram Refer to the TFT Signal Mapping application note (SiI/AN-0007) which tabulates the relationship between the input data to the transmitter and output data from the...
  • Page 39 Power Management Pins Description Pin # Type Description Name SCDT Sync Detect. A HIGH level is outputted when DE is actively toggling indicating that the link is alive. A LOW level is outputted when DE is inactive, indicating the link is down. Can be connected to PDO to power down the outputs when DE is not detected.
  • Page 40 BA7657 Multimedia ICs BLOCK DIAGRAM Red 1 input HD 1 input HD Sync Signal detector HD 2 input Green 1 input HD output Ground Red output DET. Blue 1 input Ground Green output Composite video input Red 2 input (Sync on Green) Syncsepa Ground Composite sync output...
  • Page 41 L4973V3-L4973V5 3.5A STEP DOWN SWITCHING REGULATOR L4973D3-L4973D5 Pin Configuration SYNC SYNC V5.1 V5.1 COMP COMP BOOT BOOT D94IN162A D94IN163A DIP18 SO20 PIN FUNCTIONS PIN DIP-18 PIN SO-20 NAME DESCRIPTION COMP E/A output to be used for frequency compensation A logic signal (active high) disables the device (sleep mode operation). If not used it must be connected to GND;...
  • Page 42 BA033 Low Saturation Voltage type 3-terminal Regulator Reference Voltage 1. Vcc 2. GND 3. OUTPUT BLOCK DIAGRAM SI4925DY Dual P-Channel 30-V (D-S) Rated MOSFET P-Channel MOSFET S O - 8 Pin Configuration MC54/74F04 Hex Inverter Symbol Parameter Symbol Parameter V CC Supply Voltage V OH Output High Voltage...
  • Page 43 AD9884A 100MSPS/140MSPS Analog Flat Panel Interface Pin Configurations TYPE PARTS TYPE PARTS Regulator Transistor KA78M05R KSC1623 1. BASE 1. INPUT 2. EMITTER 2. GND 3. COLLECTOR 3. OUTPUT - 43 -...

  • Page 44: Schematic Diagram

    SCHEMATIC DIAGRAM 1. INPUT SWITCHING - 44 -...
  • Page 45 2. AD9884 (PRE-AMP/PLL/ADC) - 45 -...
  • Page 46 3. VIDEO PROCESS - 46 -...
  • Page 47 4. MEMORY - 47 -...
  • Page 48 5. LVDS - 48 -...
  • Page 49 6. MICOM - 49 -...
  • Page 50 7. DC/DC CONVERTOR - 50 -...
  • Page 51 8. CONNECTOR & JACKS (BRAND) - 51 -...
  • Page 52 9. USB - 52 -...
  • Page 53 10. CONTROL/POWER KEY - 53 -...
  • Page 54 PACKING AND ACCESSORIES Adaptor Owner’s Manual Signal Cable Power Cord Kit Box (110V or 220V) DVI-I Adaptor PE Bag Left Packing Right Packing - 54 -...
  • Page 55 May. 2001 P/NO : 3828TSL046D Printed in Korea...

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