LG Flatron EZ T910BU Service Manual
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LG Flatron EZ T910BU Service Manual

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Service Guide Specification
Service Guide Specification
1.
Model Description
MODEL
T910BUK
SUFFIX
KLEUQD
2.
Printing Specification
1. Trim Size (Format) :
2. Printing Colors
• Cover :
LG COLORS
• Inside :
Black
3. Stock (Paper)
Snow White 150 g/   
• Cover :
Snow White 100 g/   
• Inside :
4. Printing Method :
5. Bindery :
6. Language :
7. Number of pages :
3.
Special Instructions
(1) Origin Notification
* LGEDI : Printed in Indonesia
* LGESP : Printed in Brazil
* LGENT : Printed in China
4.
Changes
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7
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5
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3
2
1
REV.
MM/DD/YY
NO.
BRAND
Product Name
215mm x 280 mm
Saddle stitch
ENGLISH
36
( Including blank 1page)
* LGEWA : Printed in U.K.
* LGEMX : Printed in Mexico
* LGEIL : Printed in India
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CHANGE NO.
LG
FLATRONez T910BU
CHANGE
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Part No.
3828TSL076R
CONTENTS
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Summary of Contents for LG Flatron EZ T910BU

  • Page 1 FLATRONez T910BU Printing Specification 1. Trim Size (Format) : 215mm x 280 mm 2. Printing Colors • Cover : LG COLORS • Inside : Black 3. Stock (Paper) Snow White 150 g/    • Cover : Snow White 100 g/    •...
  • Page 2 D D D D Pagination sheet Pagination sheet English English English English English English English Front cover Cover Inside …. ….. Contents /  2 English Rear cover PCB 2 Back Inside Cover (blank)
  • Page 3 Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CA-130 MODEL: T910BU (T910BUK-AL**Q, AL**E) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MENU SELECT Brightview *Same looking with new chassis Issue Date; 2003.11...

  • Page 4: Table Of Contents

    CONTENTS SPECIFICATIONS ........... 2 DESCRIPTION OF BLOCK DIAGRAM.....9 ADJUSTMENT ............11 SAFETY PRECAUTIONS ........3 TROUBLESHOOTING GUIDE ......13 TIMING CHART ............4 EXPLODED VIEW..........20 OPERATING INSTRUCTIONS ........ 5 REPLACEMENT PARTS LIST ......22 WIRING DIAGRAM ..........6 PIN CONFIGURATION ..........

  • Page 5: 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 6: 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 7: 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 8: Wiring Diagram

    WIRING DIAGRAM Anode Cap DY-Pin DY Assembly Screw P701 v ie P901 P201- P702 (Control PCB) P402 P401 P451 - 6 -...

  • Page 9: Disassembly

    DISASSEMBLY 1. TILT/SWIVEL & BACK COVER REMOVAL 1) Set the monitor face downward. 2) Pull the latch (a), carefully remove the Tilt/Swivel by pulling it upward. 3) Remove two screws (b) . 4) Release the latch (c). 5) Slide the Back Cover away from the Front Cabinet of the monitor. Tip Spec.

  • Page 10: Block Diagram

    BLOCK DIAGRAM - 8 -...

  • 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 3) EEPROM → ALL CLEAR → Y(Yes) command. <Caution> Do not run this procedure unless the All adjustment are thoroughly checked and corrected EEPROM is changed. All data in EEPROM (mode when the monitor leaves the factory, but sometimes data and color data) will be erased.
  • Page 14 ± 0.05FL of 5. Input EDID Data. 11) Adjust SUB-Brightness command to 0.4 1) Display color 15,0 cross hatch pattern at Mode 4. the raster luminance. 2) EEPROM → Write EDID command and confirm 12) Display color 15,0 Full White pattern(70x70mm) at “EDID Write OK!!”...

  • 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 - 16 -...
  • 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 - 18 -...
  • Page 21 7. TROUBLE IN OSD NO OSD CHECK TROUBLE IN IC301 PIN 4 P302 (5V) ? CHECK IC301 PIN 5 TROUBLE IN (NEGATIVE H-PULSE P302 COMES IN ?) CHECK IC301 PIN 18 TROUBLE IN (V-PULSE COMES IN?) P302 CHECK IC301 PIN 13, 14, 15 TROUBLE IN (IS THERE ANY SIGNAL IC301, IC401...
  • Page 22 - 20 -...

  • Page 23: Exploded View

    CABINET ASSEMBLY, T910BUK BRAND TKC080 DOW TCO03 DI-LOCAL-For Europe, U.K 3091TKC112A CABINET ASSEMBLY, T910BUJ BRAND TKC080 DOW TCO99 DI-LOCAL -For Central ASIA, Israel 6318L19011A CDT(CIRC), M46QEF903X25NDDH LG-PHILIPS DISPLAYS 85KHZ 29.1MM FCDT TCO HB 3809TKC054H BACK COVER ASSEMBLY, T910BK TKC047 PFC DI-LOCAL -For Europe, U.K 3809TKC054J...

  • Page 24: 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. 11. 28. DATE: 2003. 11. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.
  • Page 25 DATE: 2003. 11. 28. DATE: 2003. 11. 28. *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 C930 0CQ2721N419 2700PF 100V J PE NI TP C817 0CE476CH638 47UF SHL,SD 25V M FM5 TP 5...
  • Page 26 DATE: 2003. 11. 28. DATE: 2003. 11. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION D861 0DRGF00069A SB140 GULF TP DO41 40V 1A 40 FB304 6210TCZ001J BAS3550T0(125-022J) BO SUNG D901 0DRGF00090A GBL06 GULF BK GBL 600V 4A 12...
  • Page 27 DATE: 2003. 11. 28. DATE: 2003. 11. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION Q833 0TFFC10008A SFS9634 FAIRCHILD ST TO220F R356 0RN1002F409 10K 1/6W 1 TA52 Q834 0TR231609AA KSC2316-Y TP SAMSUNG TO92L R357 0RD4701Q609...
  • Page 28 DATE: 2003. 11. 28. DATE: 2003. 11. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R714 0RD1001Q609 1K 1/4W(3 5% TA52 R827 0RN1002F409 10K 1/6W 1 TA52 R715 0RD5601Q609 5.60K 1/4W(3 5% TA52 R830 0RD1002Q609...
  • Page 29 DATE: 2003. 11. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R934 0RD3302Q609 33K 1/4W(3 5% TA52 R935 0RD3301Q609 3.30K 1/4W(3 5% TA52 R941 0RD2703Q609 270K 1/4W(3 5% TA52 R949 0RN0220H609 0.22 1/2W 5% TA52 R951 0RD1101A609 1.1K OHM 1/2 W (7.0) 5% TA52 R952 0RD4701Q609 4.70K 1/4W(3 5% TA52...

  • Page 30: Pin Configuration

    PIN CONFIGURATION M24C08 Serial I C BUS EEPROM SYMBOL PSDIP8 (BN) DESCRIPTION 0.25mm Frame Chip Enable Input E0-E2 Serial Data Address Input/Output Serial Clock Write Control SO8 (MN) 150mil Width Supply Voltage Logic Dirgram TSSOP8 (DW) Ground 169mil Width M62501P /FP Teerminal Number and The facillty PIN CONFIGURATION(TOP VIEW) PIN NO.
  • Page 31 TDA4867J PHILIPS 32P, SDIP SYMBOL DESCRIPTION non-inverted input inverted input supply voltage OUTB output B OUTB ground TDA4867J OUTA output A OUTA flyback supply voltage V FB GUARD guard output GUARD FEEDB feedback inprt FEEDB Pin Configuration GUARO output/ power save mode GUARD FLYBACK CIRCUIT...
  • Page 32 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 EHT compensation via horizontal size 1.2V...

  • Page 33: 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 34: 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) - 33 - - 34 -...
  • Page 35 Nov. 2003 P/NO : 3828TSL076R Printed in Korea...

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