LG Flatron F700P (F700PJ-ALE) Service Manual
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LG Flatron F700P (F700PJ-ALE) Service Manual

LG Flatron F700P (F700PJ-ALE) Service Manual

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COLOR MONITOR

SERVICE MANUAL

CHASSIS NO. : CA-127
MODEL:
(
) **Same model for SVC
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
F700P
(F700PJ-AL**E)
*Same looking with new chassis.
Issue Date; 2003. 4.

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Summary of Contents for LG Flatron F700P (F700PJ-ALE)

  • Page 1: Color Monitor

    Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CA-127 MODEL: F700P (F700PJ-AL**E) ) **Same model for SVC CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. *Same looking with new chassis. Issue Date; 2003. 4.

  • Page 2: Table Of Contents

    CONTENTS SPECIFICATIONS ........... 2 DESCRIPTION OF BLOCK DIAGRAM....11 SAFETY PRECAUTIONS ........3 ADJUSTMENT ............13 TIMING CHART ............4 TROUBLESHOOTING GUIDE ......15 OPERATING INSTRUCTIONS ........ 5 EXPLODED VIEW..........21 CONTROL LOCATIONS ......... 7 REPLACEMENT PARTS LIST ......23 WIRING DIAGRAM ..........

  • Page 3: Safety Precautions

    SAFETY PRECAUTIONS SAFETY-RELATED COMPONENT WARNING! X-RADIATION There are special components used in this color monitor The only potential source of X-radiation is the picture tube. which are important for safety. These parts are marked However, when the high voltage circuitry is operating on the schematic diagram and the replacement properly there is no possibility of an X-radiation problem.

  • Page 4: Timing Chart

    TIMING CHART VIDEO SYNC FACTORY PRESET MODE MODE MARK MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 VESA Sync Polarity – Frequency 43.269 53.674 68.677 91.146 93.750 µs Total Period 23.112 18.631 14.561 10.971 10.666 µs Video Active Time 17.778 14.222 10.836...

  • Page 5: Operating Instructions

    OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW USB port AC Power Socket See Front Control Panel Power Button D-Sub Signal Connector Front Control Panel 1. Power Button Button Use these buttons to choose or adjust items in This button is used to turn the monitor ON and the on screen display.
  • Page 6 Universal Serial Bus Making use of USB (Universal Serial Bus)* USB(Universal Serial Bus) is an innovation in connecting your different desktop peripherals conveniently to your computer. By using the USB, you will be able to connect your mouse, keyboard, printer, and other peripherals to your monitor instead of having to connect them to your computer.

  • Page 7: Control Locations

    CONTROL LOCATIONS VR801 : High Voltage Adjustment (26kV) VR901 : B Adjustment (190V Line) - 7 -...

  • Page 8: Wiring Diagram

    WIRING DIAGRAM P250 P201 P402 P401 P801 P902 P901 P702 Socket Signal Cable P302 P301 P303 - 8 -...

  • Page 9: Disassembly

    DISASSEMBLY 1. TILT/SWIVEL & BACK COVER REMOVAL 1) Set the monitor face downward. 2) Carefully remove the Tilt/Swivel by pulling it upward. 3) Pressing the latch (a), Back cover by pushing it upward. (See Figure. 1) 4) Release the latch (c). (See Figure. 2 and Tip Spec.) 5) Slide the Back Cover away from the Front Cabinet of the monitor.

  • Page 10: Block Diagram

    BLOCK DIAGRAM - 10 -...

  • Page 11: Description Of Block Diagram

    DESCRIPTION OF BLOCK DIAGRAM 1. Line Filter & Associated Circuit. 5. X-ray Protection. This is used for suppressing noise of power input line This circuit detects the rectified DC voltage comes flowing into the monitor and/or some noise generated from the FBT pin 4. If the high voltage of the FBT in this monitor flowing out through the power input reaches up to about 30kV (abnormal state), H.V control (IC802) detects.
  • Page 12 12. High Voltage Output & FBT (Flyback Transformer). 18. Static Convergence Control Circuit. The high voltage output circuit is used for generating This circuit corrects the convergence of the screen by pulse wave to the primary coil of the FBT (Flyback supplying the convergence signal to the 4H (STC) coil Transformer (T701)).

  • Page 13: Adjustment

    ADJUSTMENT GENERAL INFORMATION All adjustment are thoroughly checked and corrected 3) EEPROM ALL CLEAR Y(Yes) command. when the monitor leaves the factory, but sometimes <Caution> Do not run this procedure unless the several adjustments may be required. EEPROM is changed. All data in EEPROM (mode Adjustment should be following procedure and after data and color data) will be erased.
  • Page 14 11) Display color 15,0 box pattern(70x70mm) at mode 4. 6. Adjustment for Focus. 12) DRIVE ADJ command. 1) Display H character in full screen at Mode 4. 13) Set B-DRIVE to 85 at DRIVE of the alignment 2) Adjust two Focus control on the FBT that focus program.

  • Page 15: Troubleshooting Guide

    TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK TROUBLE IN FUSE OK? FUSE (F901) (F901) CHECK TROUBLE IN D901 BRIDGE DIODE BRIDGE DIODE? (D901) CHECK C905(+) VOLTAGE TROUBLE IN 145VDC at 110V input 310VDC at 220V input IC901 CHECK TROUBLE IN...
  • Page 16 2. NO CHARACTER NO CHARACTER TROUBLE IN CHECK P301, SIGNAL CABLE, IC302 PIN 5, 6, 7 ? PC SIGNAL CHECK TROUBLE IN IC302 PIN 19, 20, 21 IC302, P302 PIN 10 (5V) ? CHECK IC303 PIN 1, 3, 5 TROUBLE IN PIN10 (12V), IC303 PIN 6 (80V) ?
  • Page 17 3. NO RASTER NO VIDEO (POWER INDICATOR GREEN or AMBER) CHECK AMBER POWER INDICATOR TROUBLE IN GREEN or AMBER ? P302 SIGNAL CABLE GREEN CHECK ROTATE SCREEN SCREEN CONTROL CONTROL KNOB TO KNOB OF FBT CLOCKWISE or COUNTER CLOCKWIES CHECK VOLTAGE AT D924/D926 CATHODE (190V) TROUBLE IN PRIMARY...
  • Page 18 4. NO VERTICAL DEFLECTION NO V-DEFLECTION (ONE HORIZONTAL LINE) CHECK TROUBLE IN IC601 Pin 3 T901 15V LINE (15V) ? CHECK TROUBLE IN IC601 PIN 7 T701 47V LINE (47V)? CHECK TROUBLE IN IC801 PIN 12 IC801 (SAWTOOTH WAVE)? TROUBLE IN IC601, V-CIRCUIT - 18 -...
  • Page 19 5. TROUBLE IN DPM STAND-BY/SUSPEND/ DPMS OFF MODE FAILURE CHECK CHECK PC, IC401 (MICOM) INPUT H/V SYNC SIGNAL (PC IS NOT GOING INTO PIN 40, 41 (H/V INPUT) DPM MODE) SIGNAL? NO H/V SYNC SIGNAL CHECK TROUBLE IN IC401 PIN 9, 8 X401, IC401 WAVEFORM? CHECK...
  • Page 20 6. NO DEGAUSSING NO DEGAUSSING CHECK TROUBLE IN IC401 PIN 6 IC401 (MICOM) (5V)? CHECK TROUBLE IN Q920 COLLECTOR D925 VOLTAGE (0.5V)? CHECK TROUBLE IN P901? P901 CHECK TROUBLE IN RL901? RL901 TROUBLE IN TH901, DEGAUSSING COIL - 20 -...
  • Page 21 - 21 -...

  • Page 22: Exploded View

    Ref. No. Part No. Description 3091TKC100A CABINET ASSEMBLY, F700PJ BRAND 068 DI 6318L17020A CDT(CIRC), M41QEU423X01NDDH LG-PHILIPS 95KHZ 29.1MM FLATRON TCO RTC 3809TKC042F BACK COVER ASSEMBLY, FB790G 041 DI, PFC, USB -PFC 3809TKC042B BACK COVER ASSEMBLY, FB790G 3808TKC041A 96KHZ -NON PFC 3043TKK103A TILT SWIVEL ASSEMBLY, FB770H T060 B058 .

  • 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 DATE: 2003. 4. 18. DATE: 2003. 4. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.
  • Page 24 DATE: 2003. 4. 18. DATE: 2003. 4. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C815 0CE227CF638 “220UF SHL,SD 16V M FM5 TP 5” C925 0CE228CH618 2200U SHL 25V M FL TP5 C817 0CE476CH638 “47UF SHL,SD 25V M FM5 TP 5”...
  • Page 25 DATE: 2003. 4. 18. DATE: 2003. 4. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION D804 0DS141489AB 1N4148 TP GRANDE DO-34 500MW ZD902 0DZ560009AG GDZJ5.6B TP GRANDE DO-34 500 D805 0DS141489AB 1N4148 TP GRANDE DO-34 500MW...
  • Page 26 Q771 0TR920009AB KSP92 TP SAMSUNG TO92 HIGH V R342 0RD0332A609 33 OHM 1/2 W (7.0) 5% TA52 Q801 0TR558900BA “2SC5589(LG,W/M) BK TOSHIBA T” R343 0RD0332A609 33 OHM 1/2 W (7.0) 5% TA52 Q802 0TR471009AA KSD471AC-Y TP SAMSUNG TO92 R344 0RD0332Q609...
  • Page 27 DATE: 2003. 4. 18. DATE: 2003. 4. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R451 0RD4701Q609 4.70K 1/4W(3 5% TA52 R740 0RN1503G409 150K 1/4W 1 TA52 R452 0RD4701Q609 4.70K 1/4W(3 5% TA52 R741 0RD2001Q609...
  • Page 28 DATE: 2003. 4. 18. DATE: 2003. 4. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R853 0RD4701Q609 4.70K 1/4W(3 5% TA52 R951 0RD1101A609 1.1K OHM 1/2 W (7.0) 5% TA52 R857 0RD3001Q609 3K 1/4W(3 5% TA52...
  • Page 29 DATE: 2003. 4. 18. DATE: 2003. 4. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION SW203 6600TR1001A TSTC-2 HUA JIE NON 12V 0.05A R829 0RH1002D622 10K OHM 1 / 10 W 2012 5.00% SW204 6600TR1001A TSTC-2 HUA JIE NON 12V 0.05A...

  • Page 30: Pin Configuration

    PIN CONFIGURATION M62501P /FP Teerminal Number and The facillty PIN CONFIGURATION(TOP VIEW) PIN NO. Symbol Functional Description PWM output terminal PWM OUT Power supply terminal Trigger Input terminal PWM OUT CAGC This pin is used to set oscillating frequency VREF CAGC This pin is used for AGC setting Output terminal of error signal...

  • Page 31: Schematic Diagram

    SCHEMATIC DIAGRAM NOTICE Since this is a basic schematic diagram. The value of components and some partial connection are sucject to be changed for improvement without notice. - 31 - - 32 -...

  • Page 32: Printed Circuit Board

    PRINTED CIRCUIT BOARD 1. CONTROL BOARD (Component Side) 2. CONTROL BOARD (Solder Side) 5. USB BOARD (Component Side) 3. MAIN BOARD (Component Side) 4. MAIN BOARD (Solder Side) 6. USB BOARD (Solder Side) - 33- - 34 -...
  • Page 33 Apr. 2003 P/NO : 3828TSL086D Printed in Korea...

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Flatron f700pF700pj-al**e

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