Related Manuals for LG 808K
Summary of Contents for LG 808K
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Page 1: Color Monitor
COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-42 FACTORY MODEL: LG808K MODEL: FPD1830 CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. AUTO SOURCE/SET... -
Page 2: Table Of Contents
CONTENTS SPECIFICATIONS ........... 2 ADJUSTMENT ............10 PRECAUTIONS ............3 TROUBLESHOOTING GUIDE ......11 TIMING CHART ............4 PRINTED CIRCUIT BOARD........16 OPERATING INSTRUCTIONS ........ 5 EXPLODED VIEW...........19 WIRING DIAGRAM ..........6 REPLACEMENT PARTS LIST .......21 BLOCK DIAGRAM ........... 7 SCHEMATIC DIAGRAM ......... -
Page 3: Precautions
PRECAUTION WARNING FOR THE SAFETY-RELATED COMPONENT. WARNING BE CAREFUL ELECTRIC SHOCK ! • There are some special components used in LCD monitor that are important for safety. These parts are • If you want to replace with the new backlight (CCFL) or marked on the schematic diagram and the inverter circuit, must disconnect the AC adapter... -
Page 4: Timing Chart
TIMING CHART VIDEO SYNC << Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> Total Period Back Porch Video Active Time Front Porch Sync Duration Sync Mode Resolution Frequency Clock Sort Polarity 31.469 640x350 25.175 70Hz... -
Page 5: Operating Instructions
OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW AUTO SOURCE/SET Power Indicator Power Button Power Connecter SOURCE/SET Button OSD Button D-Sub Signal DVI-D Signal Connector Connector Buttons Front Control Panel AUTO SOURCE/SET 1. Power ON/OFF Button 4. SOURCE/SET Button Use this button to turn the monitor on or off. Use this button to make Dsub or DVI connector active. -
Page 6: Wiring Diagram
6631T11016D Connector Ass’y P/N: Connector Ass’y P/N: Connector Ass’y P/N: 6631T25008Q 6631T20015B P705 J801 J702 J710 P902 Connector Ass’y P/N: 6631T20015G... -
Page 8: Description Of Block Diagram
DESCRIPTION OF BLOCK DIAGRAM 1. Input signal switching part. There are two inputs which are analog and digital input. They come from each 15 pin D-Sub and 24 pin DVI-D connector. 2. 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 pixelclock. -
Page 9: Power Board
POWER BOARD 50 ~ 60Hz 100KHz HVDC INPUT RECTIFIER ENERGY OUTPUT RECTIFIER COMPONENTS AND FILTER TRANSFER AND FILTER LINE 100 ~ 240V PWM CONTROL PHOTO-COUPLER SIGNAL CIRCUIT ISOLATION COLLECTION SECONDA RY PRIMARY OPERATION DESCRIPTION_POWER 1. EMI components. This part contains of EMI components to comply with global marketing EMI standards like FCC, VCCI CISPR, the circuit included a line-filter, across line capacitor and of course the primary protection fuse. -
Page 10: Adjustment
ADJUSTMENT All adjustment are thoroughly checked and corrected 3. Adjustment for White Balance when the monitor leaves the factory, but sometimes 1) Display color 0,0 pattern at Mode 13. several minor adjustment may be required. 2) Select COLOR BIAS CALIBRATION command Adjustment should be following procedure and after and Enter. -
Page 11: Troubleshooting Guide
TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK J703 TROUBLE IN INPUT VOLTAGE POWER (12V) ? CHECK J703 TROUBLE IN 5V VOLTAGE POWER (5V) ? CHECK U203’s PIN 151. TROUBLE IN IS THIS PIN U203 or X201 OSCILLATED? TROUBLE SOMEWHERE ELSE... - Page 12 2. NO RASTER NO RASTER CHECK J703 PIN 1, 2 TROUBLE IN (12V) ? POWER CHECK TROUBLE IN J703 PIN 5, 6 POWER (5V) ? CHECK TROUBLE IN U801 U801 (3.3V)? CHECK TROUBLE IN U201 ? U201 CHECK TROUBLE IN R234, R235, R237 U203 PULSE?
- Page 13 CHECK CHECK DOT CLOCK U401 PIN 10 PATTERN PULSE ? CHECK CHECK U401 PIN 8 V.PULSE? DVS PATTERN CHECK CHECK U401 PIN 7 DHS PATTERN H.PULSE? TROUBLE IN LCD MODULE - 13 -...
- Page 14 3. NO CLOCK (CLOCK GENERATOR) NO DOT CLOCK CHECK TROUBLE IN X201 20MHz ? X201 CHECK TROUBLE IN R237 U203 CLOCK ? - 14 -...
- Page 15 4. TROUBLE IN DPM TROUBLE IN DPM CHECK PC CHECK PC IS NOT GOING R713, R716? INTO DPM OFF MODE CHECK U203 PIN 152 TROUBLE IN WAVEFORM X201 (20MHz) ? CHECK TROUBLE IN U203 PIN 49 SIGNAL CABLE TROUBLE IN PC - 15 -...
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Page 16: Printed Circuit Board
X201 J702 R820 C706 ZD705 C738 R815 C201 R830 C737 R816 ZD702 ZD701 R817 R268 C202 R818 R819 R811 C818 C702 R810 R812 R813 R771 R770 R814 R773 R772 R775 R774 R719 C860 R223 C282 R718 R224 C204 ZD711 R226 C281 R225 C210... - Page 17 D711 C231 R702 D718 C224 C225 R732 C222 C216 C233 R726 R727 D720 C221 C242 C728 C223 C226 C220 R237 C241 C213 C727 C284 D722 C240 R236 C239 R235 C230 C283 R282 C212 C238 C219 C229 R234 C218 C209 C217 C237 C228 R729...
- Page 18 4. POWER BOARD (Solder Side)
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Page 20: Exploded View Parts List
Description Ref. No. Part No. CABINET ASSEMBLY, LG808H G/WAY 3090TKL052 (CKD) 3091TKL052C LCD(LIQUID CRYSTAL DISPLAY) LM181E06-A4M1 LG PHILPS TFT COLOR SXGA 18.1" 6304FLP034A BACK COVER ASSEMBLY, LG808H 3808TKL038 MX 3809TKL033B TILT SWIVEL ASSEMBLY LG883D . BK, MX(LOCAL), HINGE, COVER(CKD) 3043TKK078L... -
Page 21: 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 DATE: 2002. 11. 11. DATE: 2002. 11. 11. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. - Page 22 DATE: 2002. 11. 11. DATE: 2002. 11. 11. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION D718 0DS226009AA KDS226 TP KEC SOT-23 80V 300M R216 0RJ1001D677 1K OHM 1/10 W 5% 1608 R/TP D719 0DS226009AA KDS226 TP KEC SOT-23 80V 300M...
- Page 23 DATE: 2002. 11. 11. DATE: 2002. 11. 11. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION POWER BOARD R729 0RJ4700D677 470 OHM 1/10 W 5% 1608 R/TP R732 0RJ1002D677 10K OHM 1/10 W 5% 1608 R/TP BD901 0DD360000DA D3SBA60 BK SHINDENGEN 600V 2...
- Page 24 DATE: 2002. 11. 11. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION CONTROL BOARD 0CN1010K519 100P 50V K B TA52 0CN1010K519 100P 50V K B TA52 0CN1010K519 100P 50V K B TA52 0CN1010K519 100P 50V K B TA52 0CN1010K519 100P 50V K B TA52 0CN1010K519 100P 50V K B TA52...