LG Flatron ez T710PH Service Manual
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LG Flatron ez T710PH Service Manual

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COLOR MONITOR

SERVICE MANUAL

CHASSIS NO. : CA-128
MODEL:
(
) **Same model for SVC
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MENU
SELECT
Brightview
Website:http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.html
T710PH
(T710PHJ-AL**E, AL**Q)
*Same looking with new chassis.
Issue Date; 2003. 6.

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Summary of Contents for LG Flatron ez T710PH

  • Page 1: Color Monitor

    Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CA-128 MODEL: T710PH (T710PHJ-AL**E, AL**Q) ) **Same model for SVC CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MENU SELECT Brightview *Same looking with new chassis. Issue Date; 2003. 6.

  • Page 2: Table Of Contents

    CONTENTS SPECIFICATIONS ........... 2 TROUBLESHOOTING GUIDE ......13 SAFETY PRECAUTIONS ........3 EXPLODED VIEW........... 23 TIMING CHART ............4 REPLACEMENT PARTS LIST ....... 25 OPERATING INSTRUCTIONS ........ 5 PIN CONFIGURATION........... 30 WIRING DIAGRAM ..........6 SCHEMATIC DIAGRAM ......... 32 BLOCK DIAGRAM ........... 8 ADJUSTMENT ............

  • 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 << Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> Sync Total Period Video Active Sync Duration Front Porch Blanking Time Back Porch Mode Resolution Frequency Time (B) Sort Polarity –...

  • Page 5: Operating Instructions

    OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW ID Label MENU SELECT Brightview AC Power Socket See Front Control Panel Power ON/OFF Button Signal Connector Front Control Panel MENU Button SELECT Button Power (DPMS) Indicator MENU SELECT Brightview Buttons Brightiew Button Power Button 1.

  • Page 6: Wiring Diagram

    WIRING DIAGRAM P201 P402 P405 P501 P702 P701 S + S Socket P902 Signal Cable P302 P301 - 6 -...
  • Page 7 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 (b), Back cover by pushing it upward. 4) Release the latch (c). (See Tip Spec.) 5) Slide the Back Cover away from the Front Cabinet of the monitor.

  • Page 8: Block Diagram

    BLOCK DIAGRAM Dynamic Focus Static Focus Screen - 8 -...

  • Page 9: Description Of Block Diagram

    DESCRIPTION OF BLOCK DIAGRAM 1. Line Filter & Associated Circuit. 6. Horizontal and Vertical Oscillation. This is used for suppressing noise of power input line This circuit generates the horizontal pulse and the vertical flowing into the monitor and/or some noise generated in pulse by taking the H and V sync signal.
  • Page 10 15. Image Rotation (Tilt) Circuit. 17. Video Output Amp Circuit. This circuit corrects the tilt of the screen by supplying the This circuit amplifies the video signal which comes from image rotation signal to the tilt coil which is attached near the video pre-amp circuit and amplified it to applied the the deflection yoke of the CRT.

  • Page 11: Adjustment

    ADJUSTMENT GENERAL INFORMATION 7) Adjust tilt as arrow keys to be the best condition. All adjustment are thoroughly checked and corrected 8) DIST. ADJ. → BALANCE command. when the monitor leaves the factory, but sometimes several adjustments may be required. 9) Adjust parallelogram as arrow keys to be the best Adjustment should be following procedure and after condition.
  • Page 12 14) Set Brightness and Contrast to Max position. 5. Input EDID Data. 1) Display color 15,0 cross hatch pattern at Mode 4. 15) Set SUB-CONTRAST 127(7F) (decimal) position. 2) EEPROM → Write EDID command and confirm 16) Set B-DRIVE to 85(55) at DRIVE of the alignment “EDID Write OK!!”...

  • Page 13: Troubleshooting Guide

    TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK TROUBLE IN FUSE FUSE OK? (F901) CHECK C908 VOLTAGE? TROUBLE IN (AC120V: 160VDC, D900 AC220V: 304VDC) CHECK TROUBLE IN IC901 PIN 6 IC901 WAVEFORM CHECK TROUBLE IN D941, D942, D941, D942, D951, D951, D961, D962, D971 D961, D962, D971...
  • Page 14 2. NO CHARACTER NO CHARACTER CHECK TROUBLE IN IC302 P302 5V LINE PIN 18(5V) ? TROUBLE IN CHECK PC SIGNAL, IC302 PIN 5, 6, 7? P301 SIGNAL CABLE CHECK TROUBLE IN IC302 PIN 19, 20, 21 ? IC302 CHECK TROUBLE IN IC303 PIN 4 (80V) P303 15V LINE/ PIN 8 (15V) ?
  • Page 15 3. NO RASTER NO VIDEO (POWER INDICATOR ON) CHECK AMBER DPM MODE POWER INDICATOR (NO H and/or V SYNC) GREEN or AMBER? GREEN CHECK TROUBLE IN D712 ANODE D712 (-160V)? CHECK TROUBLE IN G1 VOLTAGE? Q799 (-55V~-15V) CHECK TROUBLE IN CDT HEAT D941, Q942, Q941 VOLTAGE? (6.3V)
  • Page 16 4. NO HORIZONTAL DEFLECTION NO H-DEFLECTION (ONE VERTICAL LINE) CHECK TROUBLE IN Q706? Q706 CHECK TROUBLE IN B + VOLTAGE 50V LINE (50V)? CHECK T701(FBT) PIN 2 TROUBLE IN (31KHZ 60V, Q719, Q720, D710 69KHZ 140V) ? CHECK TROUBLE IN Q705 COLLECTOR Q705 WAVEFORM?
  • Page 17 5. TROUBLE IN H-LINEARITY UNBALANCED OF H-LIN. CHECK TROUBLE IN IC401 IC401 (MICOM) PIN 6, 7, 8 ? CHECK TROUBLE IN Q711~Q716? Q711 ~ Q716 CHECK TROUBLE IN L703? L703 Cs SIGNAL TABLE HORIZONTAL FREQUENCY(fH) 30K ~ 33.9K TROUBLE IN 34K ~ 38.9K C722, C723, C726, C729 39K ~ 43.9K...
  • Page 18 6. NO VERTICAL DEFLECTION NO V-DEFLECTION (ONE HORIZONTAL LINE) CHECK TROUBLE IN IC601 PIN 3 R603 15V LINE (15V+)? CHECK TROUBLE IN IC701 PIN 12, 13? IC701 12Pin 13Pin TROUBLE IN IC601, V-CIRCUIT - 18 -...
  • Page 19 7. TROUBLE IN OSD (ENTER BUTTON MUST BE PRESSED.) NO OSD CHECK TROUBLE IN IC302 B + 5V LINE (5V) ? DC 5V CHECK TROUBLE IN IC302 PIN 1, 24 IC401 PIN 29 (V-FBP), WAVEFORM? IC701 PIN 1 LINE (H-FBP) Pin 1 Pin 24 TROUBLE IN...
  • Page 20 8. TROUBLE IN DPM (NO OFF MODE.) OFF MODE FAILURE CHECK CHECK PC, IC401 (MICOM) INPUT H/V SYNC SIGNAL (PC IS NOT GOING INTO PIN 30, 31 (H/V INPUT) DPM OFF MODE) SIGNAL? H/V SYNC CHECK TROUBLE IN IC401 PIN 13 X401 WAVEFORM? 12MHz...
  • Page 21 9. NO DEGAUSSING NO DEGAUSSING (DEGAUSS ON THE OSD MENU MUST BE PRESSED.) CHECK TROUBLE IN IC401 PIN 5 IC401 (MICOM) (0V)? CHECK TROUBLE IN Q953 COLLECTOR Q953 VOLTAGE? DC 15V CHECK TROUBLE IN P902 ? P902 CHECK TROUBLE IN RL901? RL901 TROUBLE IN...
  • Page 22 10. NO TILT (NO ROTATION ) NO TILT (NO ROTATION) CHECK TROUBLE IN IC401 PIN21 IC401 ( MI COM) WAVE FORM ? CHECK 15V LINE TROUBLE IN 15V LINE, 6.3V LINE AND 6.3V LINE ? CHECK TROUBLE IN Q503 EMITTER Q501~Q503 VOLTAGE ? TROUBLE IN...
  • Page 23 - 23 -...

  • Page 24: Exploded View

    CABINET ASSEMBLY, T710P BRAND C079 SPRAY,B/VIEW,LABEL CKD,ER04,5008HF - For Iran 3091TKC106F CABINET ASSEMBLY, T710PH BRAND C079 TCO03,PC+ABS,ER04,B/VIEW,DI - For TCO03 6318L17014A CDT(CIRC), M41QEE903X 01NHUD LG-PHILIPS 85KHZ 29.1MM FLAT TCO HB 3809TKC050B BACK COVER ASSEMBLY, T710BH/PH C046 GN5008HF,8C358(EQ54) - For Europe, Iran 3809TKC050A...

  • Page 25: 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. 06. 16. DATE: 2003. 06. 16. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.
  • Page 26 DATE: 2003. 06. 16. DATE: 2003. 06. 16. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C821 0CK1040K945 0.1UF 50V Z F TR D712 0DR100009CA RGP10G TP GULF SEMICONDUCTOR C822 0CN1040K949 0.1M 50V Z F TA52 D714...
  • Page 27 DATE: 2003. 06. 16. DATE: 2003. 06. 16. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION FB307 6210TCZ001J BAS3550T0(125-022J) BO SUNG Q821 0TRKE10007A KTD882-Y KEC ST TO126 40V 3A - For Europe FB308 6210TCZ001J BAS3550T0(125-022J) BO SUNG...
  • Page 28 DATE: 2003. 06. 16. DATE: 2003. 06. 16. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R412 0RD1004Q609 1M OHM 1/4 W (3.4) 5% TA52 R725 0RN1501F409 1.5K 1/6W 1 TA52 R415 0RD1001Q609 1K 1/4W(3 5% TA52...
  • Page 29 DATE: 2003. 06. 16. DATE: 2003. 06. 16. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R805 0RD2001Q609 2K 1/4W(3 5% TA52 SW205 140-058D SKHV10911A LGEC NON 12 20 HO R806 0RD4702Q609 47K 1/4W(3 5% TA52...

  • Page 30: Pin Configuration

    PIN CONFIGURATION M24C08 Serial I C BUS EEPROM SYMBOL DESCRIPTION PSDIP8 (BN) 0.25mm Frame E0-E2 Chip Enable Input Serial Data Address Input/Output Serial Clock SO8 (MN) Write Control 150mil Width Supply Voltage TSSOP8 (DW) 169mil Width Logic Dirgram Ground TDA4867J PHILIPS 32P, SDIP SYMBOL DESCRIPTION...
  • Page 31 TDA4841PS PHLIPS 32P EHT compensaton via vertical size EHT compensation via horizontal size 1.2V VSMOD HSMOD EWDRV HFLB FOCUS Vout2 EW-OUTPUT VERTICAL V-OUTPUT V-SYNC INPUT EHT COMPENSATION V-SYNC XRAY HSMOD V-sync OSCILLATOR H-PINCUSHION AND POLARITY Vout1 V-LINEARITY H-SIZE AND V-SIZE INTEGRATOR AND AGC H-CORNER...

  • Page 32: 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. - 32 - - 33 -...

  • Page 33: Printed Circuit Board

    PRINTED CIRCUIT BOARD 1. CONTROL BOARD (Component Side) 2. CONTROL BOARD (Solder Side) 3. MAIN BOARD (Component Side) 4. MAIN BOARD (Solder Side) - 34 - - 35-...
  • Page 34 Jun. 2003 P/NO : 3828TSL091W Printed in Korea...

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