LG Flatron L1511S Service Manual
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LG Flatron L1511S Service Manual

LG Flatron L1511S Service Manual

Color monitor
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COLOR MONITOR

SERVICE MANUAL

CHASSIS NO. : CL-32
MODEL:
*(
) **Same model for Service
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
L1511S
(L1511SL-AL**R)
L1511SK
(L1511SL-AL**B)
*To apply the Mstar Chip.

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Summary of Contents for LG Flatron L1511S

  • 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 MODEL: L1511S (L1511SL-AL**R) L1511SK (L1511SL-AL**B) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. *To apply the Mstar Chip.

  • Page 2: Table Of Contents

    CONTENTS SPECIFICATIONS ........... 2 ADJUSTMENT ............9 PRECAUTIONS ............3 TROUBLESHOOTING GUIDE ......10 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..........21 DESCRIPTION OF BLOCK 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 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 3. Menu Button Use this button to turn the display on or off. Use this button to enter or exit the On Screen <Power (DPMS) Indicator>...

  • Page 6: Wiring Diagram

    WIRING DIAGRAM Connector Ass’y : P/N: 6631T11016C Connector Ass’y : P/N: 6631T20022G J704 J706 J705 - 6 -...

  • Page 7: Block Diagram

    BLOCK DIAGRAM - 7 -...

  • Page 8: Description Of Block Diagram

    DESCRIPTION OF BLOCK DIAGRAM 1. Video Controller Part & Display Data Transmitter Part.(MST9011) 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: 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 10: Troubleshooting Guide

    TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK POWER BOARD, AND FIND CHECK J707 OUT A SHORT POINT VOLTAGE PIN5, PIN6 (5V)? AS OPENING EACH POWER LINE CHECK U801 PIN 1& U803 CHECK U801. PIN 3 VOLTAGE (5V) ? CHECK U802 PIN 3(3V) &...
  • Page 11 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. (U501 PIN25) 1. CONFIRM BRIGHTNESS OSD CONTRL STATE. J705 PIN1 2. CHECK MICOM DIM-ADJ PORT(U501 PIN41) CHECK PULSE AS...
  • Page 12 3. NO RASTER (OSD IS NOT DISPLAYED) – MST9011 NO RASTER (OSD IS NOT DISPLAYED) U201 POWER PINS CHECK U803, U801 3.3V? 1. CHECK PIN122, 123 U201 SOLDERING CONDITION PIN122, 123 OSCILLATE AS 2. CHECK X501 12MHZ? 3. TROUBLE IN U201 U501 PIN41 IS 48KHz H-SYNC? CHECK CONNECTION LINE...
  • Page 13 4. NO RASTER (OSD IS DISPLAYED) – MST9011 NO RASTER (OSD IS DISPLAYED) U201 POWER PIN114(3.3V) CHECK U803, U801 PIN111(2.5V) 1. CHECK PC CHECK 2. CHECK SIGNAL CABLE R,G,B INPUT? U201 PIN 33,30,28 & D-SUB CONNECTOR LINE CHECK CHECK H-SYNC LINE H-SYNC INPUT (D-SUB→U501 →U201 U201 PIN 126?

  • Page 14: Printed Circuit Board

    PRINTED CIRCUIT BOARD 1. MAIN BOARD (Component Side) R524 R724 R707 R523 R723 C707 R726 R727 R540 R551 R703 R701 R706 R722 C505 ZD701 D702 D701 R528 C703 R725 R529 R716 R531 R520 R525 C714 R530 C712 C201 R580 C203 C202 R570 R571...
  • Page 15 2. MAIN BOARD (Solder Side) C224 C214 C213 3.CONTROL BOARD (Component Side) LED1 MODEL:L1510SL P/N:6870T628C10 DATA:2003.01.22 - 15 -...
  • Page 16 4.POWER BOARD (Component Side) 5.POWER BOARD (Solder Side) - 16 -...
  • Page 17 - 17 -...

  • Page 18: Exploded View Parts List

    CABINET ASSEMBLY, L1511SL BRAND . 3090TKL040 -L1511S 3091TKL066F CABINET ASSEMBLY, L1511SL BRAND L040A BK SPRAY-L1511SK 3091TKL066H LCD(LIQUID CRYSTAL DISPLAY), LM150X06-A3M1 LG PHILPS TFT COLOR 15.0 INCH XGA LVDS SMM 6304FLP025A LCD(LIQUID CRYSTAL DISPLAY), LM150X06-A4M1 LG PHILPS TFT COLOR 6BIT LVDS or 6304FLP063A BACK COVER ASSEMBLY, L1510SL 3808TKL029 .

  • 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: 2003. 3. 11. DATE: 2003. 3. 11. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.
  • Page 20 DATE: 2003. 3. 11. DATE: 2003. 3. 11. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION RESISTORs R745 0RJ4701D677 4.7K OHM 1/10 W 5% 1608 R/TP R201 0RJ1500D677 150 OHM 1/10 W 5% 1608 R/TP R747 0RJ4701D677 4.7K OHM 1/10 W 5% 1608 R/TP...

  • Page 21: 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 22 MST9011 ANALOG MSTAR 128P VSYNC1 AVSS_PLL TESTPIN Pin 1 AVSS AVDD GNDP VDDP AVSS AVDD REXT AVDD_PLL AVSS_PLL AVDD VDDC AVSS GNDC BIN1 GNDP BIN1M VDDP SOGIN1 LVA0M GIN1 LVA0P GIN1M LVA1M RIN1 LVA1P RIN1M LVA2M BIN0M LVA2P BIN0 LVACKM GIN0M LVACKP GIN0...

  • Page 23: Schematic Diagram

    SCHEMATIC DIAGRAM 1. SCALER - 23 -...
  • Page 24 2. MICOM - 24 -...
  • Page 25 3. POWER - 25 -...
  • Page 26 4. CONNECTOR & JACKS - 26 -...
  • Page 27 5. KEY PART - 27 -...
  • Page 28 Mar. 2003 P/NO : 3828TSL083T Printed in Korea...

This manual is also suitable for:

L1511sl-albL1511sl-alrFlatron l1511skFlatron l1510sFlatron l1520b l1520bl-al**r

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