LG FlatronEZ T710BH Service Manual
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LG FlatronEZ T710BH Service Manual

Chassis no. ca-131
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All manuals and user guides at all-guides.com
COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : CA-131
MODEL:
(
) **Same model for Service
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
T710BH
(T710BHJ-AL**E)
T710SH
(T710BHJ-AL**M)
*Same looking with new chassis.
Issue Date; 2003. 6.

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  • Page 1 All manuals and user guides at all-guides.com Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CA-131 MODEL: T710BH (T710BHJ-AL**E) T710SH (T710BHJ-AL**M) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MENU SELECT Brightview *Same looking with new chassis.

  • Page 2: Table Of Contents

    All manuals and user guides at all-guides.com 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...........

  • Page 3: Safety Precautions

    All manuals and user guides at all-guides.com 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

    All manuals and user guides at all-guides.com 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...

  • Page 5: Operating Instructions

    All manuals and user guides at all-guides.com 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 Power (DPMS) Indicator MENU Button SELECT Button MENU SELECT Brightview...

  • Page 6: Wiring Diagram

    All manuals and user guides at all-guides.com WIRING DIAGRAM P201 P405 P501 P701 P702 S + S P402 Socket P902 Signal Cable P302 P301 - 6 -...

  • Page 7: Disassembly

    All manuals and user guides at all-guides.com 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).

  • Page 8: Block Diagram

    All manuals and user guides at all-guides.com BLOCK DIAGRAM Dynamic Focus Static Focus Screen - 8 -...

  • Page 9: Description Of Block Diagram

    All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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

    All manuals and user guides at all-guides.com 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.
  • Page 12 All manuals and user guides at all-guides.com 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 90(5A) at DRIVE of the alignment “EDID Write OK!!”...

  • Page 13: Troubleshooting Guide

    All manuals and user guides at all-guides.com 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 Q901 WAVEFORM CHECK...
  • Page 14 All manuals and user guides at all-guides.com 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...
  • Page 15 All manuals and user guides at all-guides.com 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)
  • Page 16 All manuals and user guides at all-guides.com 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...
  • Page 17 All manuals and user guides at all-guides.com 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...
  • Page 18 All manuals and user guides at all-guides.com 6. NO VERTICAL DEFLECTION NO V-DEFLECTION (ONE HORIZONTAL LINE) CHECK TROUBLE IN IC601 PIN 3 D951 15V LINE (15V+)? CHECK TROUBLE IN IC701 PIN 12, 13? IC701 12Pin 13Pin TROUBLE IN IC601, V-CIRCUIT - 18 -...
  • Page 19 All manuals and user guides at all-guides.com 7. TROUBLE IN OSD NO OSD (ENTER BUTTON MUST BE PRESSED.) 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...
  • Page 20 All manuals and user guides at all-guides.com 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...
  • Page 21 All manuals and user guides at all-guides.com 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...
  • Page 22 All manuals and user guides at all-guides.com 10. NO TILT (NO ROTATION ) NO TILT (NO ROTATION) CHECK TROUBLE IN IC401 PIN21 IC401 ( MI COM) WAVE FORM ? CHECK TROUBLE IN 15V LINE AND 6.3V LINE ? 15V LINE, 6.3V LINE CHECK TROUBLE IN Q503 EMITTER...
  • Page 23 All manuals and user guides at all-guides.com - 23 -...

  • Page 24: Exploded View

    Description 3091TKC089U CABINET ASSEMBLY, T710BH BRAND C079 5200HF,TCO99,B/VIEW,ER04,DI - For World Wide (T710BH) 3091TKC089Y CABINET ASSEMBLY, T710SH BRAND C079 320T(89483),B/VIEW,LG RED,DI(SPRING CKD) - For Mexico, Panama (T710SH) 3091TKC089W CABINET ASSEMBLY, T710SH BRAND C079 320T,89483,B/VIEW,DI - For Thailand (T710SH) 3091TKC089L CABINET ASSEMBLY, T710B BRAND C079 5008HF, B/VIEW, LABEL CKD ER04 - For Israel (T710BH) 6318L17014A CDT(CIRC), M41QEE903X 01NHUD LG-PHILIPS 85KHZ 29.1MM FLAT TCO HB - For Northern Hemisphere...

  • Page 25: Replacement Parts List

    All manuals and user guides at all-guides.com 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. 17. DATE: 2003. 06. 17. *S *AL LOC.
  • Page 26 All manuals and user guides at all-guides.com DATE: 2003. 06. 17. DATE: 2003. 06. 17. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C750 0CK1040K945 0.1UF 50V Z F TR D311 0DS124409AA 1SS244 TP ROHM KOREA...
  • Page 27 All manuals and user guides at all-guides.com DATE: 2003. 06. 17. DATE: 2003. 06. 17. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION Q707 0TR127009AA KTA1270-Y(KTA562TM) TP KEC T IC302 0IPRPNS025A LM1246DDA/NA NATIONAL SEMICO Q708...
  • Page 28 All manuals and user guides at all-guides.com DATE: 2003. 06. 17. DATE: 2003. 06. 17. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R341 0RD0332A609 33 OHM 1/2 W (7.0) 5% TA52 R706 0RN2701F409 2.7K OHM 1/6 W 1.00% TA52...
  • Page 29 All manuals and user guides at all-guides.com DATE: 2003. 06. 17. DATE: 2003. 06. 17. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION OTHERs R766 0RD1501Q609 1.50K 1/4W(3 5% TA52 R768 0RD9103A609 910K OHM 1/2 W (7.0) 5% TA52...

  • Page 30: Pin Configuration

    All manuals and user guides at all-guides.com 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...
  • Page 31 All manuals and user guides at all-guides.com TDA4841PS PHLIPS 32P HFLB FOCUS XRAY HSMOD HPLL2 BSENS HCAP HREF BDRV HBUF PGND HPLL1 HDRV SGND TDA4841PS XSEL VCAP VREF EWDRV VAGC VOUT2 VSMOD VOUT1 ASCOR VSYNC HSYBC CLBL HUNLOCK Pin Configuration EHT compensaton Block Diagram via vertical size...

  • Page 32: Schematic Diagram

    All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 32 - - 33 -...

  • Page 33: Printed Circuit Board

    All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com Jun. 2003 P/NO : 3828TSL091U Printed in Korea...

This manual is also suitable for:

Flatronez t710shT710bhj-al

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