LG Electronics LCD 782LS + Pll, Scaling, Block Diagram, GM5020, DC/DC Block, Regulator, Eeprom

Models: LCD 782LS

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Page 8

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12V(Inverter)

Tx+/-,Hs,Vs,CLK,DEN

Module Power (5V)

LVDS Tx

OSD	MCU

To Inverter

12V

BRT-CTL

INV-CTL

12V

5.0V

POWER BOARD

90-264V

AC INPUT

Analog

Signal

(H/V Sync)

(R,G,B)

DSUB

DDC

(EDID)

HSYNC SDA, SCL

Image 8

Contents

Websitehttp//biz.LGservice.com BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUALCHASSIS NO. CL-29 FACTORY MODEL LB782G ID LABEL MODEL NoCONTENTS SPECIFICATIONSBLOCK DIAGRAM AND DESCRIPTION TROUBLESHOOTING GUIDETAKE CARE DURING HANDLING THE LCD MODULE WITH BACKLIGHT UNIT PRECAUTIONWARNING FOR THE SAFETY-RELATED COMPONENT TIMING CHART VIDEO SYNCOPERATING INSTRUCTIONS FRONT VIEWREAR VIEW Front Control PanelWIRING DIAGRAM J801J706 J710DISASSEMBLY BACK COVER REMOVALBLOCK DIAGRAM + PLLScaling Module Power LVDS TxDESCRIPTION OF BLOCK DIAGRAM 1. Input signal part3. Power Part 2. Pre-amp/ ADC / PLL / Video ControllerBLOCK DIAGRAM POWER BOARD 6. Signal collectionPRIMARY SECONDA RYADJUSTMENT Adjustment for White Balance1. Adjustment Start Adjustment for EDIDTROUBLESHOOTING GUIDE 1. NO POWER2. NO RASTER L204 3. NO CLOCK CLOCK GENERATOR L201R233, R234? 4. TROUBLE IN DPMCHECK PRINTED CIRCUIT BOARD 1. MAIN BOARD Component Side2. CONTROL BOARD Component Side 3. CONTROL BOARD Solder Side P/N 6870T487A114. POWER BOARD Component Side 5. POWER BOARD Solder Side EXPLODED VIEW EXPLODED VIEW PARTS LIST DescriptionCAPACITORS REPLACEMENT PARTS LISTMAIN BOARD DIODEs COILs & COREsTRANSISTOR RESISTORsPOWER BOARD OTHERsCONTROL BOARD PIN CONFIGURATION PIN CONFIGURATION PIN FUNCTIONBLOCK DIAGRAM CAT24WC08J-TE13 8PSCHEMATIC DIAGRAM 1. GM50202. LVDS 3. MICOM 4. DC/DC 5. CONNECTOR 6. CONTROL 7. POWER P/NO 3828TSL074E Printed in Korea