Related Manuals for LG L1811SG
Summary of Contents for LG L1811SG
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Page 1: Color Monitor
COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-43 FACTORY MODEL: L1811SG MODEL: L1811S (L1811SG-VL) CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. L1811S... -
Page 2: Table Of Contents
CONTENTS SPECIFICATIONS ........... 2 ADJUSTMENT ............10 PRECAUTIONS ............3 TROUBLESHOOTING GUIDE ......11 TIMING CHART ............4 PRINTED CIRCUIT BOARD........14 OPERATING INSTRUCTIONS ........ 5 EXPLODED VIEW...........17 WIRING DIAGRAM ..........6 REPLACEMENT PARTS LIST .......19 BLOCK DIAGRAM ........... 7 PIN CONFIGURATION ...........22 DESCRIPTION OF BLOCK DIAGRAM.....8 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 Video Active Time Front Porch Sync Duration Back Porch Sync Mode Resolution Frequency Clock Polarity Sort 31.469 640x350 25.175 70Hz... -
Page 5: Operating Instructions
OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW L1811S Power Connect See Front Control Panel D-Sub Signal Connect Front Control Panel 1. Power ON/OFF Button 5. SELECT Button Use this button to turn the monitor on or off. Use this button to enter a selection in the On Screen Display. Use this button to scanning auto adjust. -
Page 6: Wiring Diagram
Connector Ass’y P/N: 6631T25008R Connector Ass’y P/N: 6631T11012P P902 J705 J710 J702 Connector Ass’y P/N: J703 6631T12002L MATAL FRAME Connector Ass’y P/N: 6631T20015R MODULE... -
Page 7: Block Diagram
LVDS R,G,B (Low Voltage differential Differential Signaling) AVDD2.5V AVDD3.3V Address DVDD2.5V DVDD3.3V AVDD 3.3V DVDD 3.3V Data 8 Bi t AVDD 2.5V DVDD 2.5V INVERTER R,G,B, H/V Sync... -
Page 8: Description Of Block Diagram
DESCRIPTION OF BLOCK DIAGRAM 1. Video Controller Part & Display Data Transmitter 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. -
Page 9: Power Board Block Diagram
Power Board Block Diagram 50 ~ 60Hz 100KHz HVDC INPUT RECTIFIER ENERGY OUTPUT RECTIFIER COMPONENTS AND FILTER TRANSFER AND FILTER LINE 100 ~ 240V SIGNAL PWM CONTROL PHOTO-COUPLER COLLECT- CIRCUIT ISOLATION PRIMARY SECONDARY 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
Enter. 1. Adjustment Start 1) Display any pattern at any Mode. 3. Adjustment for EDID 2) Run alignment program for L1811SG on the IBM 1) Use this procedure only when there is some compatible PC. probelm on EDID data. 3) Select EEPROM... -
Page 11: Troubleshooting Guide
TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK J702 TROUBLE IN INPUT VOLTAGE POWER (12V) ? CHECK J702 TROUBLE IN 5V VOLTAGE POWER (5V) ? CHECK U203’s PIN 103. 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 J705 PIN 27, 29, 30 POWER (5V) ? CHECK TROUBLE IN U811 U811 (3.3V)? CHECK TROUBLE IN U201 ? U201 - 12 -...
- Page 13 3. NO CLOCK (CLOCK GENERATOR) NO DOT CLOCK CHECK TROUBLE IN X201 20MHz ? X201 4. TROUBLE IN DPM TROUBLE IN DPM CHECK CHECK PC R713, R715 PC IS NOT GOING (SYNC) ? INTO DPM OFF MODE CHECK U203 PIN 102 TROUBLE IN WAVEFORM X201...
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Page 14: Printed Circuit Board
C841 U812 J708 J703 C804 J702 C805 X201 C819 C817 :6870T615A10 C860 U804 :2002.12.11 DATE MODEL:L1811SG L823 C806 C802 C807 C803 C809 C201 R810 U702 R238 C810 C202 R212 C818 U203 U811 C840 R734 C218 R223 L203 C282 R733 R224... - Page 15 C283 C286 C231 R267 R703 R704 R705...
- Page 16 3. POWER BOARD (Component Side) 4. POWER BOARD (Solder Side) 5. CONTROL BOARD LED1...
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Page 17: Exploded View
EXPLODED VIEW - 17 -... -
Page 18: Exploded View Parts List
Description Ref. No. Part No. CABINET ASSEMBLY, LB801G BRAND , L1811SG(ANALOG ONLY) 3091TKL044M LCD(LIQUID CRYSTAL DISPLAY), LM181E06-A4M1 LG PHILPS TFT COLOR SXGA 18.1" 6304FLP034A BACK COVER ASSEMBLY, LB801G , L1811SG (ANALOG ONLY) 3809TKL025L TILT SWIVEL ASSEMBLY, LM805L -HIPS NO USB... -
Page 19: 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. 12. 16. DATE: 2002. 12. 16. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. - Page 20 DATE: 2002. 12. 16. DATE: 2002. 12. 16. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R265 0RH1002D622 10K OHM 1 / 10 W 2012 5.00% U811 0IRH033200A BA033FP-E2 MOLD-3 TP REGULA R268 0RH1002D622 10K OHM 1 / 10 W 2012 5.00%...
- Page 21 DATE: 2002. 12. 16. DATE: 2002. 12. 16. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C906 0CK10302945 0.01UF 2KV Z F TR 140-058E SKHV10910B LGEC NON 12V 20A C907 0CE476EK638 47UF KMG 50V M FM5 TP 5 140-058E...
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Page 22: Pin Configuration
SGND_ADC RESERVED AGND_ADC CVDD ADC_TEST CRVSS AVDD_ADC AVDD_LV_O AGND_BLUE AVSS_LV_O BLUE- AVSS_OUT_LV_O BLUE+ AVDD_OUT_LV_O AVDD_BLUE CH0N_LV_O AGND_GREEN CH0P_LV_O GREEN- CH1N_LV_O GREEN+ CH1P_LV_O AVDD_GREEN CH2N_LV_O AGND_RED CH2P_LV_O RED- CLKN_LV_O RED+ CLKP_LV_O AVDD_RED CH3N_LV_O CRVSS CH3P_LV_O CVDD AVDD_OUT_LV_O ROM_ADDR15 AVSS_OUT_LV_O ROM_ADDR14 AVDD_LV_E ROM_ADDR13 AVSS_LV_E ROM_ADDR12... - Page 23 NVRAM Serial Host I/F Paralle l Crystal Serial I/F ROM IF Reference GPIO Clock Host 8051-st yle Externa l Generati on Contro lle r Interface Micro- ROM I/F co ntro lle r RAMs Internal Brightness / Output Dual LVDS Image Zoom / Panel Data Contr ast /...