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LG LB500K-GL Service Manual

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COLOR MONITOR

SERVICE MANUAL

CHASSIS NO. : CL-32
FACTORY MODEL: LB500K
MODEL:
*(
) ID LABEL MODEL No.
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Website:http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.html
L1510S
(LB500K-GL)
L1510S
(LB500K-GU)

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Summary of Contents for LG LB500K-GL

  • Page 1: Color Monitor

    Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-32 FACTORY MODEL: LB500K MODEL: L1510S (LB500K-GL) L1510S (LB500K-GU) ) ID LABEL MODEL No. CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    Top : 30° min. Bottom : 50° min. 5-1. Operating Temperature: 10°C~35°C (50°F~95°F) 2-2. Luminance (Ambient) : 200(min.), 250(typ.) at Center point (LG Philips Module) 5-2. Relative Humidity : 10%~80% : 150(min.), 180(typ.) at Center point (AUO Module) (Non-condensing) 5-3. MTBF : 50,000 Hours (Min.)

  • 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 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 Power Connector D-Sub Signal Connector See front control panel Front Control Panel 1. Power Button 4. AUTO/SELECT Button Use this button to turn the display on or off. Use this button to enter a selection in the On <Power (DPMS) Indicator>...

  • Page 6: Wiring Diagram

    WIRING DIAGRAM (LG Philips Module) Connector Ass’y : P/N: 6631T11016C Connector Ass’y : P/N: 6631T20008U J702 J706 J705 - 6 -...
  • Page 7 WIRING DIAGRAM (AUO Module) Connector Ass’y : P/N: 6631T11011H Connector Ass’y : P/N: 6631T20008U J402 J706 J705 - 7 -...

  • Page 8: Block Diagram

    BLOCK DIAGRAM ( LG Philips Module) Inver ter block - 8 -...
  • Page 9 DESCRIPTION OF BLOCK DIAGRAM (LG Philips Module) 1. Scaler One chip IC(GMZAN-2, U201) GMZAN-2 (U201) 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 C207, 208, 209 with matching IC’s proper cut off voltage.
  • Page 10 BLOCK DIAGRAM (AUO Module) Inver ter block - 10 -...
  • Page 11 DESCRIPTION OF BLOCK DIAGRAM (AUO Module) 1. Scaler One chip IC(GMZAN-2, U201) GMZAN-2 (U201) 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 C207, 208, 209 with matching IC’s proper cut off voltage. This signal is processed as a proper 8 bit digital signal by U201’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 13. 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 POWER BOARD, AND FIND CHECK J705 OUT A SHORT POINT VOLTAGE PIN5, PIN6 (5V)? AS OPENING EACH POWER LINE CHECK U802 PIN 1 CHECK U803. VOLTAGE (5V) ? CHECK CHECK 5VS LINE U805 PIN 1 Voltage (OPEN CHECK)
  • Page 14 2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS NO RASTER (OSD IS NOT DISPLAYED) J705 PIN5, PIN 6 CHECK LIPS CHECK MICOM INV J705 PIN2 ON/OFF PORT. 1. CONFIRM BRIGHTNESS OSD CONTRL STATE. J705 PIN1 2. CHECK MICOM DIM-ADJ PORT CHECK PULSE AS...
  • Page 15 CHECK PIN66 IS 48KHz H-SYNC? CONNECTION LINE PIN70 IS 60Hz V-SYNC? FROM U201 TO J402 PIN69 IS 48KHz DEN? IS PULSE APPEARED AT SIGNAL PINS? (LG Philips Module) J402 CHECK U401/U411 PIN74, PIN 1 U805 3.3V? PIN31 IS 65MHz CLOCK?
  • Page 16 4. NO RASTER (OSD IS DISPLAYED) – gmZAN2 NO RASTER (OSD IS DISPLAYED) U201 POWER PIN CHECK U802, U806 3.3V? 1. CHECK PC CHECK 2. CHECK SIGNAL CABLE R,G,B INPUT? U201 PIN 87, 91, 95 & D-SUB CONNECTOR LINE CHECK CHECK H-SYNC LINE H-SYNC INPUT (D-SUB→U701→MICOM...

  • Page 17: Printed Circuit Board

    PRINTED CIRCUIT BOARD 1. MAIN BOARD (Component Side) LG Philips Module R807 C514 R561 L701 R560 C706 U805 R580 C832 R570 R571 R525 R529 X201 C516 R528 C410 R551 C409 C408 C407 C406 R531 R712 R403 R404 U702 R530 C835...
  • Page 18 - 18 -...

  • Page 19: Exploded View Parts List

    CABINET ASSEMBLY, LB500K BRAND 3090TKL038 3091TKL039U LCD(LIQUID CRYSTAL DISPLAY) LM150X06-A3M1 LG PHILPS TFT COLOR (LB500K-GL) 6304FLP025A LCD(LIQUID CRYSTAL DISPLAY) LM150X07-B4 LG PHILPS TFT COLOR 15.0 (LB500K-GL) 6304FLP024A LCD(LIQUID CRYSTAL DISPLAY) L150X3M AU TFT COLOR 1024X768 TTL (LB500K-GU) 6304FAU004A BACK COVER ASSEMBLY, LB500J 3808TKL029A 3809TKL026A TILT SWIVEL ASSEMBLY, LB500J .

  • Page 20: 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. 7. 24. DATE: 2002. 7. 24. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.
  • Page 21 DATE: 2002. 7. 24. DATE: 2002. 7. 24. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION TRANSISTOR C818 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R C819 0CK103CK51A 0.01UF 1608 50V 10% R/TP B(Y5P Q502 0TR390409AE FAIRCHILD KST3904(LGEMTF) TP S...
  • Page 22 DATE: 2002. 7. 24. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R581 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP R701 0RJ0752D677 75 OHM 1/10 W 5% 1608 R/TP R702 0RJ4701D677 4.7K OHM 1/10 W 5% 1608 R(LB500K-GU) R703 0RJ0752D677 75 OHM 1/10 W 5% 1608 R/TP...

  • Page 23: Pin Configuration

    PIN CONFIGURATION CAT24WC02J-TE13 8P BLOCK DIAGRAM DIP Package(p) SOIX Package(J) EXTERNAL LOAD V CC V CC SENSE AMPS D OUT SHIFT REGISTERS V SS V SS V CC COLUMN V SS WORD ADDRESS DECODERS BUFFERS TSSOP Package(U) START/STOP LOGIC V CC E PROM XDEC V SS...
  • Page 24 THC63LVDM83R PIN CONFIGURATION BLOCK DIAGRAM THC63LVDM83R THC63LVDM83R DATA (LVDS) TA +/- TA0-6 LVDS GND TB +/- TB0-6 TC0-6 TC +/- LVDS VCC TD0-6 LVDS GND TD +/- (140-595Mbit/On Each TCLK - LVDS Channel) TRANSMITTER TCLK+ TCLK +/- CLOCK IN (20 to 85MHz) CLOCK LVDS GND (LVDS)

  • Page 25: Schematic Diagram (Lgp Module)

    SCHEMATIC DIAGRAM (LG Philips Module) 1. GMZAN2 - 25 -...
  • Page 26 2. LVDS - 26 -...
  • Page 27 3. MICOM - 27 -...
  • Page 28 4. DC/DC BLOCK - 28 -...
  • Page 29 5. CONNECTOR & JACKS - 29 -...
  • Page 30 6. KEY PART - 30 -...

  • Page 31: Schematic Diagram (Auo Module)

    SCHEMATIC DIAGRAM (AUO Module) 1. GMZAN2 - 31 -...
  • Page 32 2. LVDS - 32 -...
  • Page 33 3. MICOM - 33 -...
  • Page 34 4. DC/DC BLOCK - 34 -...
  • Page 35 5. CONNECTOR & JACKS - 35 -...
  • Page 36 6. KEY PART - 36 -...
  • Page 37 Aug. 2002 P/NO : 3828TSL083J Printed in Korea...

This manual is also suitable for:

Lb500k-guFlatron l1510s

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