Daewoo DLT-20W2 Service Manual
  1. Manuals
  2. Brands
  3. Daewoo Manuals
  4. LCD TV
  5. DLT-20W2
  6. Service manual
Daewoo DLT-20W2 Service Manual

Daewoo DLT-20W2 Service Manual

20" lcd
Hide thumbs
Table of Contents

Advertisement

Quick Links

S/M NO. : DSL140TEF0

Service Manual

20" LCD
CHASSIS :
SL-140T
Model :
DLT-20W2
Jul. 2007

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the DLT-20W2 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Daewoo DLT-20W2

Summary of Contents for Daewoo DLT-20W2

  • Page 1: Service Manual

    S/M NO. : DSL140TEF0 Service Manual 20" LCD CHASSIS : SL-140T Model : DLT-20W2 Jul. 2007...

  • Page 2: Table Of Contents

    Contents I. Parts with the exception of MODULE 1. Safety Precaution¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ 2. Product Specification ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ 3. Block Diagram ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ 4. Schematic Diagram ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ 5. PCB Data ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ 6. Trouble Shooting ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ 7. Service Part List ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ 7-1 Service Part List ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ¡ƒ 9.

  • Page 3: Safety Precautions

    1. Safety Precautions (1) When moving or laying down a LCD Set, at least two people must work together. Avoid any impact towards the LCD Set. (2) Do not leave a broken LCD Set on for a long time. To prevent any further damages, after checking the condition of the broken Set, make sure to turn the power (AC) off.

  • Page 5: Block Diagram ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ

    3. Block Diagram...
  • Page 6 Block Diagram...
  • Page 7 Block Diagram...

  • Page 8: Schematic Diagram ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ

    4. Schematic Diagram...
  • Page 9 Schematic Diagram...
  • Page 10 Schematic Diagram -10-...
  • Page 11 Schematic Diagram -11-...
  • Page 12 Schematic Diagram -12-...
  • Page 13 Schematic Diagram -13-...
  • Page 14 Schematic Diagram -14-...
  • Page 15 Schematic Diagram -15-...

  • Page 16: Pcb Data ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ

    6. PCB Data -16-...
  • Page 17 PCB Data BOTTOM -17-...

  • Page 18: Trouble Shooting ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ

    (2) This TROUBLE SHOOTING list only contains representative and simple PCB trouble diagnosis and Module Exchange method. Therefore, if you find Sets which are difficult to diagnose or to repair, contact Daewoo Electronics. (3) Basic TROUBLE SHOOTING procedure : Check Trouble Symptoms ¡...
  • Page 19 Trouble Shooting 7-1. When LED doesn’t lit. Check start Confirm power cord Is the AC power cord connection. correctly connected? Is power S/W ON? Confirm Power S/W ON. Is output voltage of Check the power connection. Power module correct? Exchange the power module. (or LIPS) Check the Main PCB.
  • Page 20 Trouble Shooting 7-2. When TV doesn’t turn on in red LED. Check start Is output voltage of Does TV turn on Check the power connection. Power module correct? Exchange the Power module. pushing the CH key? (or LIPS) Check the connection to IR PCB. Confirm Power S/W ON.
  • Page 21 Trouble Shooting 7-4. When “No picture” in TV mode. Check start Does LED turn on in GREEN? Go to chap 7 - 2 Confirm AC connection. Confirm Power SW ON. Is this weak discharge Does raster appear? Check the power, On the screen? Inverter and panel Does auto - tuning...
  • Page 22 Trouble Shooting 7-5. When “No picture” in External input mode. Check start Confirm AC connection. Confirm Power SW ON. Does OSD menu Is this weak discharge Check the power, Screen appear? On the screen? Inverter and panel Go to 7 - 4 Check the Is the signal jack Connection of Jack...
  • Page 23 Trouble Shooting 7-6. When No Sound in External input mode. Check start Go to 7 - 5 Does Screen appear? Check the Is the sound input jack Connection of sound Jack Correctly connected? Check the Is the speaker jack Connection of speaker Correctly connected? Check the AUDIO AMP(I601) Is the I601 output...
  • Page 24 Trouble Shooting 7-7. When Key does not operate. Check start Does remote Check the I501 Controller operate? Is 2th PIN of P504A Exchange Key PCB Correctly operate? Check Key cable and I501 -24-...

  • Page 25: When Remote Controller Does Not Operate

    Trouble Shooting 7-8. When Remote Controller does not operate. Check start Does input of key operate? Check the I501 Does remote Check the battery of Controller operate? remote controller Whenever push the button of Remote controller, does the 2 nd pin Exchange the Key PCB Of P501A output normal? Check IR cable and I501...

  • Page 26: Service Part List ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ

    SCREW TAPPTITE TT2 WAS 3X8 MFZN 3CR ZZ130 PTPKCPG140 PACKING AS DLT-20W2AMBSCF M381D 7178300851 SCREW TAPPTITE TT2 WAS 3X8 MFZN 3CR M801 DMP5024600 DLT-20W2 M381H 4856813600 HOLDER WIRE NYLON 66 DAWH-13NA M803 2TP06575CL TAPE OPP T0.065XW75X500M CLEAR M481 4854872411 BUTTON POWER...
  • Page 27 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK C331 HCQK101JBA C CHIP CERA 50V CH 100PF J 1608 C647 HCQK331JBA C CHIP CERA 50V CH 330PF J 1608 C332 HCQK101JBA C CHIP CERA 50V CH 100PF J 1608 C648 HCQK331JBA...
  • Page 28 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK CC15 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 L205 HLC479J00A L CHIP COIL 4.7UH MLF2012 CC16 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 L208 HLB300M04A L CHIP BEAD...
  • Page 29 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK R506 HRFT103JBA R CHIP 1/10 10K OHM J 1608 RA100 HRFT750JBA R CHIP 1/10 75 OHM J 1608 R525 HRFT101JBA R CHIP 1/10 100 OHM J 1608 RA101 HRFT750JBA R CHIP...
  • Page 30 Service part list PART CODE PART NAME DESCRIPTION REMARK RC23 HRFT152JBA R CHIP 1/10 1.5K OHM J 1608 RC24 HRFT333JBA R CHIP 1/10 33K OHM J 1608 RC25 HRFT102JBA R CHIP 1/10 1K OHM J 1608 RC26 HRFT683JBA R CHIP 1/10 68K OHM J 1608 RC27 HRFT102JBA...

  • Page 31: Power

    9. Power 9-1. IPB-6024W02(The powe module for DLP-20W2) Input Requirements. Input Voltage Range Voltage Range:AC180V to 270V Normal Voltage:AC 240V Frequency Range Frequency Range:47 To 63Hz Normal Frequency:50 To 60Hz Input Current ¡´ 0.35 Arms at 240 Vac input Inrush Current 240V 30A peak Earth Leakage Current 3.5mA MAX(250AC)

  • Page 32: Inverter ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ

    10. Inverter 10-1. Feature - Drive 6 lamps with one module - Norminal current 6.5mArms for each lamp - 21.6~26.4V input voltage operation - Automatically balancing of lamp current - Long lamp life with soft start - Protection against lamp open or failure - Built-in fuse - Low EMI and spurious noise 10-2.

  • Page 33: Troubleshooting

    Inverter 10-4. Troubleshooting *Backlight doesn’t turn on Check start Is P502 correctly Check the connected? connection of LIPS Check Main PCB. Is voltage of pin#2 of P502 under 3.0V? Change LIPS or Panel. -33-...

  • Page 34: Out Line ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ

    11. Out Line DLT-20W2 -34-...

  • Page 35: Exploded View ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ¡Ƒ

    12. Exploded View DLT-20W2 -35-...

  • Page 36: Software Install & Upgrade

    SOFTWARE INSTALL & UPGRADE...
  • Page 37 SOFTWARE INSTALL & UPGRADE 1. Software upgrade requires: Service remocon R-30SVC7, Single master, Jig EURO Scart, Euro cable, AC adapter. a) Please connect Single Master to PC port LPT1. Jig Euro Scart SINGLE MASTER 12V (from AC ADAPTER) EURO CABLE...
  • Page 38 SOFTWARE INSTALL & UPGRADE 2. Please install software Daewoo Flashing (DF1_2Setup.exe). After install please restart computer.
  • Page 39 SOFTWARE INSTALL & UPGRADE 3. After install Daewoo Flashing Tool please run “Daewoo Flashing 1.2” 4. Please choose IC type (for LCD TV - N1F 256 AV FULL STEREO).
  • Page 40 SOFTWARE INSTALL & UPGRADE 5. Please choose Flash Memory (UOC). 6. Please choose Interface (Single Master).
  • Page 41 SOFTWARE INSTALL & UPGRADE 7. Please choose port (LPT1) 8. Please open HEX FILE...
  • Page 42 SOFTWARE INSTALL & UPGRADE 9. Please choose software version (depending on LCD Panel – for LCD TV 20" panel makers are AUO and LG Philips, for 17" LCD TV we use only one type of panel LG Philips). 20" AUO Panel 20"...
  • Page 43 10. Please ON LCD TV and press SVC button on Service remocon and next press SCREEN button to make UOC OFF. Software version 11. Please connect EURO CABLE to LCD TV and to JIG EURO SCART. Please supply 12V for JIG EURO SCART. 12. Please press Flash button. Daewoo Flashing automatically upgrade new software.
  • Page 44 In next step press SEARCH UP button about 2 sec. After this on the OSD should appear “DCXOALIGNEMENT” information. This means that DCXO alignment starts and when procedure is finished value should appear (correct value should be below 255). Date 13-04-2006 Daewoo Electronics ENG DEPT.
  • Page 45 DAEWOO ELECTRONICS CORP. 686, AHYEON-DONG, MAPO-GU, SEOUL, KOREA. C.P.O. BOX 8003 SEOUL KOREA PRINTED DATE : Jul. 2007...

Table of Contents