LG Flatron T710BH Service Manual
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LG Flatron T710BH Service Manual

Color monitor
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COLOR MONITOR

SERVICE MANUAL

CHASSIS NO. : CA-119
FACTORY MODEL: T710BH
MODEL:
*(
) ID LABEL Model No.
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
T710B
(T710BH-EL)
T710BH
(T710BH-HL)
T710SH
(T710BH-SL)

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Summary of Contents for LG Flatron T710BH

  • Page 1: Color Monitor

    Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CA-119 FACTORY MODEL: T710BH MODEL: T710B (T710BH-EL) T710BH (T710BH-HL) T710SH (T710BH-SL) ) ID LABEL Model No. CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MENU SELECT Brightview...

  • Page 2: Table Of Contents

    CONTENTS SPECIFICATIONS ........... 2 ADJUSTMENT ............11 SAFETY PRECAUTIONS ........3 TROUBLESHOOTING GUIDE ......13 TIMING CHART ............4 EXPLODED VIEW........... 23 OPERATING INSTRUCTIONS ........ 5 REPLACEMENT PARTS LIST ....... 25 WIRING DIAGRAM ..........6 PIN CONFIGURATION........... 30 DISASSEMBLY ............7 SCHEMATIC 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 << 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 Power ON/OFF Button AC Power Socket See Front Control Panel 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 P701 S + S P702 Socket P902 Signal Cable P302 P301 - 6 -...

  • Page 7: 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 (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(G2) COIL COIL TILT DEGAUSSING - 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

    Meter with PC arrow keys. 1) Display cross hatch pattern at Mode 1. 9) Adjust SUB-Brightness command to 0.4 ± 0.1FL of the 2) Run alignment program for T710BH on the IBM raster luminance. compatible PC. 10) Adjust repeat number 8).
  • Page 12 4. Input EDID Data. 17-1) Adjust R-DRIVE and G-DRIVE command to white 1) Display color 15,0 cross hatch pattern at Mode 4. ± 0.003 and y=0.298 ± 0.003 on the balance x=0.283 2) EEPROM Write EDID command and confirm White Balance Meter with PC arrow keys. “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 Q901 PIN 6 TROUBLE IN WAVEFORM (SQUARE WAVE Q901 COMES OUT?) CHECK TROUBLE IN D941, D942, D951, D941, D942,...
  • Page 14 2. NO CHARACTER NO CHARACTER CHECK TROUBLE IN IC302 P302 5V LINE PIN 7(5V) ? TROUBLE IN CHECK PC SIGNAL, IC302 PIN 1, 3, 5? P301 SIGNAL CABLE CHECK TROUBLE IN IC302 PIN 14, 16, 18 ? IC302 CHECK TROUBLE IN IC303 PIN 7 (105V) P303 12V LINE/ PIN 3 (13V) ?
  • 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, Q703, D704, D710 69KHZ 140V) ? CHECK TROUBLE IN Q705 COLLECTOR Q705 WAVEFORM?

  • Page 17: Trouble In H-Linearity

    5. TROUBLE IN H-LINEARITY UNBALANCED OF H-LIN. CHECK TROUBLE IN IC401 IC401 (MICOM) PIN 5, 6, 7 ? 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 2 D610 13V+ LINE (13V+)? CHECK TROUBLE IN IC701 PIN 23? IC701 TROUBLE IN IC601, V-CIRCUIT - 18 -...
  • Page 19 7. TROUBLE IN OSD (ENTER BUTTON MUST BE PRESSED.) NO OSD CHECK TROUBLE IN IC301 B + 5V LINE (5V) ? DC 5V CHECK TROUBLE IN IC301 PIN 5, 10 IC601 PIN1 (V-FBP), WAVEFORM? T701 40V LINE (H-FBP) Pin 10 Pin 5 CHECK 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? 24MHz...

  • Page 21: No Degaussing

    9. NO DEGAUSSING NO DEGAUSSING (DEGAUSS ON THE OSD MENU MUST BE PRESSED.) CHECK TROUBLE IN IC401 PIN 1 IC401 (MICOM) (0V)? CHECK TROUBLE IN Q953 COLLECTOR Q953 (15V) 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 13V 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 Parts List

    CABINET ASSEMBLY, T710SH BRAND C079 320T,B/VIEW,ER04(89483)NT LOCAL-(T710BH-SL) 6318L17012A CDT(CIRC), M41QEE903X 01N6UD LG-PHILIPS 70KHZ 29.1MM FLAT TCO -For Northern hemishere:(T710BH-EL) 6318L17014A CDT(CIRC), M41QEE903X 01NHUD LG-PHILIPS 85KHZ 29.1MM FLAT TCO -For Northern hemishere(T710BH-HL), (T710BH-SL) 3809TKC050A BACK COVER ASSEMBLY, E710BH 046 EQ54(8C358) -(T710BH-EL), (T710BH-HL) 3809TKC050C BACK COVER ASSEMBLY "T710 C046 320T,EQ54(8C358) -(T710BH-SL)

  • 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. 01. 24. DATE: 2003. 01. 24. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.
  • Page 26 DATE: 2003. 01. 24. DATE: 2003. 01. 24. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C771 0CK10301945 10000PF D 1KV Z F(Y5V) TR D703 0DRTW00050A MUR460L-1121 TIWAN SEMI BK D D704 0DR150001AA DTV1500MFP ST SGS-THOMSON TO...
  • Page 27 DATE: 2003. 01. 24. DATE: 2003. 01. 24. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION COILs & COREs Q719 0TF630000DA IRF630A BK SAMSUNG 200V 9A T Q799 0TR920009AB KSP92 TP SAMSUNG TO92 HIGH V FB201 6210TCE003J BAS2550T BO SUNG 2550MM AXIA...
  • Page 28 DATE: 2003. 01. 24. DATE: 2003. 01. 24. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R354 0RD0392A609 39 OHM 1/2 W (7.0) 5% TA52 R710 0RD1000Q609 100 1/4W(3 5% TA52 R711 0RD1000Q609 100 1/4W(3 5% TA52...
  • Page 29 68K 1/4W(3 5% TA52 SW207 140-058D SKHV10911A LGEC NON 12 20 HO R814 0RD1202Q609 12K 1/4W(3 5% TA52 T701 6174T11004A “1055A, CB777H LG-PHILIPS 17””” R816 0RN1801F409 1.80K 1/6W 1% TA52 T702 6170TCZ006A EE2218 2.3 MH D/FOCUS(CB775C R818 0RN3602F409 36K 1/6W 1 TA52...

  • Page 30: Pin Configuration

    PIN CONFIGURATION LOW-COST I 2 C CONTROLLED DEFLECTION PROCESSOR FOR MULTISYNC MONITORS STV6888 - 30 -...
  • Page 31 STV6888 Block Diagram - 31 -...
  • Page 32 STV9211 Pin Configuration Pin Description - 32 -...
  • Page 33 BLOCK DIAGRAM STV9211 - 33 -...
  • Page 34 STV9556 Pin Configuration OUT1 OUT2 OUT3 GNDP GNDS GNDA BLOCK DIAGRAM - 38 -...

  • Page 35: Schematic Diagram

    SCHEMATIC DIAGRAM DDC-SDA IIC-SDA IIC-SCL DDC-SCL - 34 - - 35 -...

  • Page 36: Printed Circuit Board

    PRINTED CIRCUIT BOARD 2. CONTROL BOARD (Solder Side) 1. CONTROL BOARD (Component Side) 3. MAIN BOARD (Component Side) 4. MAIN BOARD (Solder Side) - 36 - - 37 -...
  • Page 37 Feb. 2003 P/NO : 3828TSL091L Printed in Korea...

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