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Summary of Contents for LG Flatron LCD 575LE
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Page 1: Color Monitor
COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-18 FACTORY MODEL: LB565C, LB565D, LM565D MODEL: LCD 575LE (LB565C-EA) LCD 575LE (LB565D-EA) LCD 575LM (LM565D-EA) 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 ......13 TIMING CHART ............4 PRINTED CIRCUIT BOARD........17 OPERATING INSTRUCTIONS ........ 5 EXPLODED VIEW...........20 WIRING DIAGRAM ..........7 REPLACEMENT PARTS LIST .......23 DISASSEMBLY ............8 PIN CONFIGURATION..........27 BLOCK DIAGRAM .......... -
Page 3: Precautions
If the wires are pressed cause short and may • Do not modify original design without obtaining written burn or take fire. permission from LG or you will void the original parts and labor guarantee. TAKE CARE DURING HANDLING THE LCD MODULE WITH BACKLIGHT UNIT. -
Page 4: Timing Chart
TIMING CHART VIDEO SYNC Total Video Blanking Sync Back Front Sync Frequency MODE H / V Resolution Period Active Time Duration Porch Porch Polarity Clock ( E ) Time ( A ) ( B ) ( D ) ( F ) ( C ) 25.175 31.468 KHz... -
Page 5: Operating Instructions
OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW DC Power Connecter Speaker D-Sub Signal Connector Audio DC Power Cable Audio Cable Stand Cover Audio Buttons Power ON/OFF Button Front Control Panel Power (DPMS) Indicator Front Control Panel Power ON/OFF Button OSD Selection/Adjustment Power (DPMS) Indicator OSD Buttons AUTO/SET Buttons... - Page 6 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.
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Page 7: Wiring Diagram
CN5 CN4 Connector Ass’y P/N: 6631T12003B CN2 CN3... -
Page 8: Disassembly
DISASSEMBLY 1. TILT/SWIVEL REMOVAL 2. BACK COVER REMOVAL (1) Remove four screws (a) from the Back Cover. (1) Remove speaker from the Monitor. (2) Remove the Back Cover. (Push the speaker in arrow direction.) (2) Remove two screws (a). (3) Remove the Tilt/swivel. Back Cover 3. - Page 9 4. MAIN PCB ASS’Y & CABINET ASS’Y REMOVAL (1) Disconnect CN6, J5 and J10. (2) Remove four screws (a). (3) Remove the Main PCB Ass’y (4) Remove six screws (b). (5) Remove the CABINET Ass’y. (6) Remove five screws (c). (7) Remove the Control PCB Ass’y.
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Page 10: Block Diagram
MICOM EEPROM (MTV212M) 24LC16 Schmitt Trigger (74HCT14A) ST5V Hsyncm Control Hsync2 Vsync2 Vsyncm Interface LVDS ADC/PLL/Scaler MUTE AUDIO AMP 20Pin (LVDS83) (gmZAN1) TDA7496L RCLK Connector (DF14A-20P) Au dio signal +3.3V input 3.3VD Regulator Inverter 3.3V_AD 3.3V_PL 3.3VD SHUT BA033 DOWN 3.3V_AD Regulator Switch... -
Page 11: Description Of Block Diagram
DESCRIPTION OF BLOCK DIAGRAM 1. Scaler One chip IC(GMZAN1, U3) GMZAN1 (U3) is one chip IC which it supports four internal function blocks of Video Amp, PLL, A/D converter and Video processor. Video signal (0.7Vp.p) clamped through C44, 45, 191 with matching IC’s proper cut off voltage. This signal is processed as a proper 8 bit digital signal by U3’s amplifying, phase locking, A/D converting, and scaling operations. -
Page 12: Adjustment
ADJUSTMENT All adjustment are thoroughly checked and corrected 2. Adjustment for White Balance when the monitor leaves the factory, but sometimes 1) Display color 0,0 pattern at Mode 12. several minor adjustment may be required. 2) Set External Bright to MAX position and Contrast to Adjustment should be following procedure and after MAX Position. -
Page 13: Troubleshooting Guide
TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK ADAPTER, AND FIND OUT CHECK J1’S A SHORT POINT VOLTAGE AS OPENING (12V) ? EACH POWER LINE CHECK CHECK U4. U4 PIN 8 VOLTAGE (5V) ? CHECK CHECK L11 U5 Voltage (OPEN CHECK) (5V) ? - Page 14 2. NO RASTER (OSD IS NOT DISPLAYED) – INVERTER NO RASTER (OSD IS NOT DISPLAYED) J4 PIN10 CHECK ADAPTER 12V? CHECK MICOM INV J4 PIN5 ON/OFF PORT. 1. CONFIRM BRIGHTNESS OSD CONTRL STATE. J4 PIN1 2. CHECK MICOM DIM-ADJ PORT CHECK PULSE AS CONTACTING SCOPE...
- Page 15 3. NO RASTER (OSD IS NOT DISPLAYED) – gmzanl NO RASTER (OSD IS NOT DISPLAYED) POWER PINS CHECK U2, U24 3.3V? 1. CHECK PIN141, 142 U3 PIN141, 142 SOLDERING CONDITION OSCILLATE AS 14.3M? 2. CHECK X2 3. TROUBLE IN U3 PIN2 IS 65MHz CLOCK? CHECK U5’S SOLDERING PIN4 IS 48KHz H-SYNC?
- Page 16 4. NO RASTER (OSD IS DISPLAYED) – gmzanl NO RASTER (OSD IS DISPLAYED) POWER PIN CHECK U2, U24 3.3V? 1. CHECK PC CHECK 2. CHECK SIGNAL CABLE R,G,B INPUT? & D-SUB CONNECTOR U3 PIN 87, 91, 95 LINE CHECK CHECK H-SYNC LINE H-SYNC INPUT (D-SUB→U6→MICOM U3 PIN 150?
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Page 17: Printed Circuit Board
C302 C301 C306 C305 C304 C102 C101 C152 C151 C110 MODEL:LB565C P/N :6870T375A10-1 DATE :2001.06.21 C130 C133 C136 C139 C129 C240 C236 C235 C239 C230 C237 C135 SOLDERING DIRECTION... - Page 18 C191...
- Page 19 P/N :6870T245C11 DATE :2000.05.02...
- Page 20 SOLDERING DIR.
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Page 21: Exploded View
EXPLODED VIEW... -
Page 22: Exploded View Parts List
SCREW TAP TITE(B), PAN HEAD WASHER, D3.0 L12.0 MSWR3/(BK) 1BWF0302816 SCREW, PVS+4*10(MSWR/BK) 332-105G ADAPTER,AC-DC, ADP-36UB DELTA 12V 3.0A FOR LG (LM565D-EA), (LB565D-EA) 6634TBZ016A ADAPTER,AC-DC, PSCV360104A SAMSUNG 12V 3.0A FOR LG (LB565C-EA) 6634TBZ014A SIGNAL CABLE, UL 2990-9C(7.5) DT 1870MM GRAY(85964) LB500 DM 6866TD9001F SPEAKER ASSY, LB565D 15.1"... -
Page 23: 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: (LM565D-EA), (LB565D-EA), (LB565C-EA) DATE: 2001. 7. 19. MODEL: (LM565D-EA), (LB565D-EA), (LB565C-EA) DATE: 2001. 7. 19. *S *AL LOC. - Page 24 MODEL: (LM565D-EA), (LB565D-EA), (LB565C-EA) DATE: 2001. 7. 19. MODEL: (LM565D-EA), (LB565D-EA), (LB565C-EA) DATE: 2001. 7. 19. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C136 0CC330CK41A 33PF 1608 50V 5% R/TP NP0 0IRH033200A BA033FP-E2 MOLD-3 TP REGULATOR C137...
- Page 25 MODEL: (LM565D-EA), (LB565D-EA), (LB565C-EA) DATE: 2001. 7. 19. MODEL: (LM565D-EA), (LB565D-EA), (LB565C-EA) DATE: 2001. 7. 19. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 0RJ2701D677 2.7K OHM 1/10 W 5% 1608 R/TP 0CH6050K116 5PF 50V D NP0 2012 R/TP 0RJ1002D677...
- Page 26 MODEL: (LM565D-EA), (LB565D-EA), (LB565C-EA) DATE: 2001. 7. 19. MODEL: (LM565D-EA), (LB565D-EA), (LB565C-EA) DATE: 2001. 7. 19. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 0RH1001D622 1K OHM 1 / 10 W 2012 5.00% D 0CC121CK41A 120PF 1608 50V 5% R/TP NP0 0RH1001D622...
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Page 27: Pin Configuration
PIN CONFIGURATION 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).
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