LG Flatron L1715S Service Manual
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LG Flatron L1715S Service Manual

Color monitor
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COLOR MONITOR

SERVICE MANUAL

CHASSIS NO. :
CL-43
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
L1715S
(L1715SL-AL**R)
L1716S
(L1716SL-AL**R)

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Summary of Contents for LG Flatron L1715S

  • Page 1: Color Monitor

    Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-43 MODEL: L1715S (L1715SL-AL**R) L1716S (L1716SL-AL**R) ) **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 ............10 PRECAUTIONS ............3 TROUBLESHOOTING GUIDE ......11 TIMING CHART ............4 PRINTED CIRCUIT BOARD........15 OPERATING INSTRUCTIONS ........ 5 EXPLODED VIEW...........19 WIRING DIAGRAM ..........6 REPLACEMENT PARTS LIST .......21 BLOCK DIAGRAM ........... 7 SCHEMATIC 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 << Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> Total Period Video Active Time Front Porch Sync Duration Back Porch Sync Mode Resolution Frequency Clock Polarity Sort 31.469 640x350 25.175 70Hz...

  • Page 5: Operating Instructions

    OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW Power Connect D-Sub Signal Connect See Front Control Panel Front Control Panel L1715S L1716S 1. Power ON/OFF Button Use this button to turn the monitor on or off. This function optimizes the brightness, contrast or color value to the surrounding conditions and settings and Power Indicator enables you to enjoy the most suitable picture by...

  • Page 6: Wiring Diagram

    CONTROLS LOCKED/UNLOCKED : MENU and This function allows you to secure the current control settings, so that they cannot be inadvertently changed. Press and hold the MENU button and button for 3 seconds: the message “CONTROLS LOCKED” appears. You can unlock the OSD controls at any time by pushing the MENU button and button for 3 seconds: the message “CONTROLS UNLOCKED”...

  • 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.(MST9111) 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: Lips Board Block Diagram

    LIPS 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_LIPS 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 10: Adjustment

    ADJUSTMENT All adjustment are thoroughly checked and corrected when the monitor leaves the factory, but sometimes several minor adjustment may be required. Adjustment should be following procedure and after warming up for a minimum of 10 minutes. • Alignment appliances and tools. - IBM compatible PC - Programmable Signal Generator.

  • Page 11: 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 CHECK 5VS LINE U501 PIN 8 Voltage (OPEN CHECK) (5V) ? NO PROBLEM CHECK KEY CONTROL...
  • Page 12 2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS NO RASTER (OSD IS NOT DISPLAYED) J705 PIN5, PIN 6 CHECK LIPS CHECK MICOM INV J705 PIN9 ON/OFF PORT. 1. CONFIRM BRIGHTNESS OSD CONTRL STATE. J705 PIN10 2. CHECK MICOM DIM-ADJ PORT CHECK PULSE AS...
  • Page 13 3. NO RASTER (OSD IS NOT DISPLAYED) – MST9111 NO RASTER (OSD IS NOT DISPLAYED) U201 POWER PIN 8,114 CHECK U804 3.3V? 1. CHECK PIN122, 123 U201 SOLDERING CONDITION PIN122, 123 OSCILLATE AS 2. CHECK X501 12MHZ? 3. TROUBLE IN U201 U501 PIN43 IS 48KHz H-SYNC? CHECK CONNECTION LINE...
  • Page 14 4. TROUBLE IN DPM TROUBLE IN DPM CHECK CHECK PC R734, R741 PC IS NOT GOING (SYNC) ? INTO DPM OFF MODE CHECK TROUBLE IN U501 PIN 24 SIGNAL CABLE (0V) ? TROUBLE IN PC - 14 -...

  • Page 15: 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 16 2. MAIN BOARD (Solder Side) - 16 -...
  • Page 17 3. POWER BOARD (Component Side) 4. POWER BOARD (Solder Side) - 17 -...
  • Page 18 5. CONTROL BOARD(Component Side)-L1715SL 6. CONTROL BOARD(Solder Side)-L1715SL 7. CONTROL BOARD(Component Side)-L1716SL 8. CONTROL BOARD(Solder Side)-L1716SL - 18 -...
  • Page 19 - 19 -...

  • Page 20: Exploded View

    CABINET ASSEMBLY, L1715 BRAND L064 L/GRAY -FLATRON L1715S 3091TKL070A CABINET ASSEMBLY, L1716SL BRAND 3090TKL072A CA ASSY -FLATRON L1716S 3091TKL082A LCD(LIQUID CRYSTAL DISPLAY) LM170E01-A4 LG PHILPS TFT COLOR 17" TFT LCD 6304FLP058A BACK COVER ASSEMBLY, L1715 L050 350U M/GRAY 3809TKL049A TILT SWIVEL ASSEMBLY, L1715 350U M/GRAY-WITH B/C...

  • 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: 2003. 5. 9. DATE: 2003. 5. 9. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.
  • Page 22 DATE: 2003. 5. 9. DATE: 2003. 5. 9. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R205 0RJ1002D677 10K OHM 1/10 W 5% 1608 R/TP R753 0RJ1001D677 1K OHM 1/10 W 5% 1608 R/TP R207 0RJ4700D677 470 OHM 1/10 W 5% 1608 R/TP...

  • Page 23: Pin Configuration

    PIN CONFIGURATION MST9111 DUAL MSTAR 128P PIN DIAGRAM AVSS_PLL AVSS Pin 1 AVSS LVB0M LVB0P AVDD GNDP VDDP LVB1M AVSS LVB1P LVB2M LVB2P AVDD LVBCKM REXT LVBCKP AVDD_PLL LVB3M AVSS_PLL LVB3P AVDD VDDC AVSS GNDC GNDP VDDP LVA0M LVA0P LVA1M LVA1P LVA2M BIN0M...
  • Page 24 CAT24WC08J-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 CONTROL...

  • Page 25: Schematic Diagram

    SCHEMATIC DIAGRAM 1. SCALER - 25 -...
  • Page 26 2. MICOM - 26 -...
  • Page 27 3. POWER - 27 -...
  • Page 28 4. CONNECTOR & JACKS - 28 -...
  • Page 29 5. KEY PART - 29 -...
  • Page 30 May. 2003 P/NO : 3828TSL074P Printed in Korea...

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