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Related Manuals for LG Flatron L2300C
Summary of Contents for LG Flatron L2300C
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Page 1: Color Monitor
Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-77 MODEL: L2300C (L2300CN.AL**LF) MODEL: L2300C (L2300CKN.AL**LF) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. -
Page 2: Table Of Contents
CONTENTS SPECIFICATIONS ........... 2 ADJUSTMENT ............12 PRECAUTIONS ............3 TROUBLESHOOTING GUIDE ......14 TIMING CHART ............7 WIRING DIAGRAM ..........18 DISASSEMBLY ............8 EXPLODED VIEW...........19 BLOCK DIAGRAM ........... 9 REPLACEMENT PARTS LIST .......21 DESCRIPTION OF BLOCK DIAGRAM....10 SCHEMATIC DIAGRAM ......... 26 SPECIFICATIONS 1. -
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: Servicing Precautions
SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this 9. Use with this receiver only the test fixtures specified in service manual and its supplements and addenda, read this service manual. and follow the SAFETY PRECAUTIONS on page 3 of this CAUTION: Do not connect the test fixture ground strap publication. - Page 5 General Soldering Guidelines Replacement 1. Use a grounded-tip, low-wattage soldering iron and 1. Carefully insert the replacement IC in the circuit board. appropriate tip size and shape that will maintain tip 2. Carefully bend each IC lead against the circuit foil pad and solder it.
- Page 6 Circuit Board Foil Repair At Other Connections Excessive heat applied to the copper foil of any printed Use the following technique to repair the defective copper circuit board will weaken the adhesive that bonds the foil pattern at connections other than IC Pins. This technique to the circuit board causing the foil to separate from or involves the installation of a jumper wire on the "lift-off"...
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Page 7: Timing Chart
TIMING CHART VIDEO SYNC << Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> Total Front Back Display Sync. MODE section Polarity Frequency Resolution Period Porch Porch ( A ) ( C ) Clock ( E ) ( D ) -
Page 8: Disassembly
DISASSEMBLY REAR CABINET REMOVEL. 1) Remove the four screws from the stand as shown and 2) Stand the set as shown and pull the cabinet a little by separate stand. inserting your finger into the cabinet as shown. 3) If you pull the cabinet a little by hand as shown, the 4) Lay down the set as shown and detach the back latch will be detached. -
Page 9: Block Diagram
BLOCK DIAGRAM - 9 -... -
Page 10: 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 11: 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 PHOTO- COLLECTI CONTROL COUPLER 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 12: Adjustment
ADJUSTMENT Windows EDID V1.0 User Manual 2. EDID Read & Write 1) Run WinEDID.exe Operating System: MS Windows 98, 2000, XP Port Setup: Windows 98 => Don’t need setup Windows 2000, XP => Need to Port Setup. This program is available to LCD Monitor only. 1. -
Page 13: Service Osd
SERVICE OSD To enter service OSD menu, 1) Turn off the power switch button. 2) Press MENU and then POWER key. 3) Shows the service OSD menu. That menu is located in down side of main menu. 4) The service OSD menu contains additional menus as described below. a) Model Name b) EEPROM CLEAR: Initialize the EEPROM values(24C08). -
Page 14: Troubleshooting Guide
TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK POWER BOARD, CHECK J311 AND FIND OUT A SHORT VOLTAGE POINT AS OPENING PIN1, PIN2 (5V)? EACH POWER LINE CHECK U202 PIN4 (1.8V) CHECK 5VS LINE U206 PIN3 (3.3V) (OPEN CHECK) U205 PIN4 (2.5V) Voltage ? - Page 15 2. NO RASTER (OSD IS NOT DISPLAYED) – POWER BOARD NO RASTER (OSD IS NOT DISPLAYED) J311 CHECK POWER BOARD PIN6, PIN7 18V? CHECK MICOM INV J311 PIN10 ON/OFF PORT. 1.CONFIRM BRIGHTNESS CONTRL STATE. J311 PIN11 2.CHECK MICOM DIM-ADJ PORT CHECK PULSE AS CONTACTING SCOPE...
- Page 16 3. NO RASTER (OSD IS NOT DISPLAYED) – GM1601 NO RASTER (OSD IS NOT DISPLAYED) U101 POWER LINE CHECK U206 3.3V? 1. CHECK PIN122, 123 U101 SOLDERING CONDITION PIN G3, G4 2. CHECK X501 OSCILLATE AS 3. TROUBLE IN U101 14.318MHZ? U404 PIN24 IS H-SYNC(0)
- Page 17 4. TROUBLE IN DPM TROUBLE IN DPM CHECK CHECK PC R338(H0), R339(V0) PC IS GOING (SYNC) ? INTO DPM OFF MODE CHECK TROUBLE IN U404 PIN 24 SIGNAL CABLE (0V) ? TROUBLE IN PC Waveforms 7 H-SYNC 8 V-SYNC - 17 -...
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Page 18: Wiring Diagram
WIRING DIAGRAM Connector Ass’y P/N: 6631T20032K Connector Ass’y P/N: Connector Ass’y P/N: 6631T20023K 6631T11012Q Connector Ass’y P/N: 6631T20032P Connector Ass’y P/N: 6631T20013L Connector Ass’y P/N: 6631T20032X Connector Ass’y P/N: 6631T12006G 6631T12006C-C/SKD - 18 -... -
Page 19: Exploded View
EXPLODED VIEW - 19 -... -
Page 20: Exploded View Parts List
LCD(LIQUID CRYSTAL DISPLAY), LC230W02-A5 LG PHILPS TFT COLOR WXGA, 16:9, 500NITS, 25MS, LVDS or 6304FLP232A LCD(LIQUID CRYSTAL DISPLAY), LC230W02-A5K3 LG PHILPS TFT COLOR LEAD FREE, WXGA, 16:9, 500NITS, 25MS, LVDS or 6304FLP176A LCD(LIQUID CRYSTAL DISPLAY), LC230W02-A5K1 LG PHILPS TFT COLOR 16-9 , REAR & SIDE MOUNTING... -
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: 2005. 04. 07. DATE: 2005. 04. 07. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. - Page 22 DATE: 2005. 04. 07. DATE: 2005. 04. 07. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C326 0CC680CK41A 68PF 1608 50V 5% R/TP NP0 D602 0DS301109AA MMBD301LT1 TP MOTOROLA SOT23 C327 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R...
- Page 23 DATE: 2005. 04. 07. DATE: 2005. 04. 07. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L207 6210TCE001G HH-1M3216-501 CERATEC 3216MM R148 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP L211 6210TCE001G HH-1M3216-501 CERATEC 3216MM...
- Page 24 DATE: 2005. 04. 07. DATE: 2005. 04. 07. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R302 0RJ0122D677 12 OHM 1/10 W 5% 1608 R/TP R368 0RJ0332D677 33 OHM 1/10 W 5% 1608 R/TP R303 0RJ0122D677 12 OHM 1/10 W 5% 1608 R/TP...
- Page 25 DATE: 2005. 04. 07. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R609 0RJ1002D677 10K OHM 1/10 W 5% 1608 R/TP R610 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP R611 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP R612 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP...
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Page 26: Schematic Diagram
SCHEMATIC DIAGRAM 1. SCALER - 26 -... - Page 27 2. POWER - 27 -...
- Page 28 3. CONNECTOR & JACKS - 28 -...
- Page 29 4. MEMORY - 29 -...
- Page 30 5. TRANSMITTER(SIL160) - 30 -...
- Page 31 6. RS232C - 31 -...
- Page 32 7. KEY - 32 -...
- Page 33 Apr. 2005 P/NO : 3828TSL094Y Printed in Korea...