Daewoo DLX-20J1BHS Service Manual
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Daewoo DLX-20J1BHS Service Manual

Daewoo DLX-20J1BHS Service Manual

20" lcd tv
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Service Manual

20" LCD TV
CHASSIS :
Model :
DLX-20J1BHS
Caution
: In this Manual, some parts can be changed for improving. their
performance without notice in the parts list. So, if you need the
latest parts information, please refer to PPL(Parts Price List)in
Service Information Center.
S/M NO. : DSL130XEF0
SL-130X
OCT. 2006

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Summary of Contents for Daewoo DLX-20J1BHS

  • Page 1: Service Manual

    20" LCD TV CHASSIS : SL-130X Model : DLX-20J1BHS Caution : In this Manual, some parts can be changed for improving. their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List)in Service Information Center.

  • Page 2: Table Of Contents

    Contents I. Parts with the exception of MODULE 1. Safety Precaution 2. Product Specification 3. Block Diagram 4. Description of video circuit 5. Schematic Diagram 6. PCB Data 7. Trouble Shooting 8. Service Part List 8-1 Service Part List 9. Power 10.

  • Page 3: Safety Precaution

    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 4: Product Specification

    2. Product Specification...

  • Page 5: Block Diagram

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

  • Page 8: Description Of Video Circuit

    4.Description of Video Circuit SL-130X video circuit: Process input signals <Analog-TV signal,CVBS(NTSC),Y/C Signal> to produce Output signal for LCD panel.(J1/D7 : 640 x 480 , W2 : 1366 x 768) Introduction for main IC 4-1. I501(TDA15521E) The LCD One Chip 1(LOC 1)series combines the functionsof a Video Signal Processor(VSP) together with aFLASH embedded main microcontroller(doing TEXT and TV control)and an LCD panel controller.In addition the following functions are available:...

  • Page 9: Schematic Diagram

    5. 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: Pcb Data

    6. PCB Data -15-...
  • Page 16 PCB Data BOTTOM -16-...

  • Page 17: Trouble Shooting

    (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 18 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 19 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 20 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 21 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 22 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 23 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 -23-...

  • Page 24: 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 25: Service Part List

    8. Service part list 8-1. Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK PA902 4859005960 CABLE FFC 0.50P-50N-100L-T5 C257 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 V901 485LD12202 LCD PANEL HT201V01-101(5992) C258 HCBK104KBA C CHIP CERA...
  • Page 26 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK C904 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 R605 HRFT242JBA R CHIP 1/10 2.4K OHM J 1608 C908 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 R606 HRFT333JBA R CHIP...
  • Page 27 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK C534 CEXF1H229A C ELECTRO 50V RSM 2.2MF (4X7) TP A001 4859817592 PCB MAIN 234X189 C4V C542 CEXF1C100A C ELECTRO 16V RSM 10MF 5X7 C201 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 C543...
  • Page 28 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK DA44 DZ02W5R6VA DIODE CHIP ZENER Z02W5.6V Q802 T2SC2412KB TR CHIP 2SC2412K-T146-BR DA45 DZ02W5R6VA DIODE CHIP ZENER Z02W5.6V Q804 T2SC2412KB TR CHIP 2SC2412K-T146-BR I403 1P15V330-D IC CHIP VIDEO SWITCH PI5V330 Q805 T2SC2412KB...
  • Page 29 Service part list PART CODE PART NAME DESCRIPTION REMARK R568 HRFT103JBA R CHIP 1/10 10K OHM J 1608 R569 HRFT103JBA R CHIP 1/10 10K OHM J 1608 R574 HRFT103JBA R CHIP 1/10 10K OHM J 1608 R577 HRFT273JBA R CHIP 1/10 27K OHM J 1608 R591 HRFT101JBA...

  • Page 30: Power

    9. Power 9-1. IPB-6015N01/02( LIPS for DLX-20J1) 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) Hi-Pot Test...

  • Page 31: Inverter

    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 32: 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. -32-...

  • Page 33: Exploded View

    11. Exploded View DLX-20J1 -33-...

  • Page 34: Software Install & Upgrade

    SOFTWARE INSTALL & UPGRADE...
  • Page 35 SOFTWARE INSTALL & UPGRADE 1. Software Upgrade TOOL Install 1) After insert the CD to CDROM, open the folder. 2) Install the WISP 3.3 (Double click the WISP3.3.exe file)
  • Page 36 SOFTWARE INSTALL & UPGRADE 3) Press Next 4) Enter user name and company name...
  • Page 37 SOFTWARE INSTALL & UPGRADE 5) License agreement 6) Select the “complete”...
  • Page 38 SOFTWARE INSTALL & UPGRADE 7) Press Next button 8) Select yes 9) Select yes...
  • Page 39 SOFTWARE INSTALL & UPGRADE 10) Select OK 11) Select OK 12) Select “I want to restart my computer now” then press Finish...
  • Page 40 SOFTWARE INSTALL & UPGRADE 2. Software upgrade 1) Open the SVC cover for upgrading i. Open the SVC cover ii. Connect the correct cable for each software...
  • Page 41 SOFTWARE INSTALL & UPGRADE 2) UOC upgrade i. Connect the correct cable wire in P201 for UOC upgrading (Real wire connection is the right side of P201) ii. Connect jumper in P103 SCALER iii. Start WISP - Select UOCIII NIF 256 - Set the “Define delay Time”...
  • Page 42 SOFTWARE INSTALL & UPGRADE iv. IIC configuration setting - Select “SingleMaster” - Select “100Kbit/s” - Select “LPT1” - Press “OK”...
  • Page 43 SOFTWARE INSTALL & UPGRADE v. Browse file - Press “Browse” - Select the target file - Press “Open” vi. Upgrade -10-...
  • Page 44 SOFTWARE INSTALL & UPGRADE - Start “Auto Execute” - Finish 3) Scaler(Sedna) upgrade i. Connect the correct cable wire in P201 for Scaler upgrading (Real wire connection is the Left side of P201) ii. Connect jumper in P103 SCALER -11-...
  • Page 45 SOFTWARE INSTALL & UPGRADE iii. Start ISP Tool - Find the “ISP_TOOL ” icon as below - Click and execute the Tool iv. Configuration Setting - Select “SST/ATMEL” device - Press “Select Intel HEX File..” - Select the target HEX file - Press “Open”...
  • Page 46 SOFTWARE INSTALL & UPGRADE v. Upgrade - Check “Auto reload” - Upgrade “Erase —> Program —> Verify” in sequence - Finish 3. NVM Reset(All EEPROM Data Reset) 1) Purpose i. All data RESET ii. If you upgrade the UOC-III part then must do NVM RESET -13-...
  • Page 47 SOFTWARE INSTALL & UPGRADE 2) Process i. Press “S6”key in SVC remote controller ii. Press “Right” direction key in SVC remote controller - Then TV SET is turn off & on automatically` - Finish -14-...
  • Page 48 SOFTWARE INSTALL & UPGRADE 4. Shipping Reset 1) Purpose i. To make Shipping condition ii. If you upgrade the UOC-III part then must do “SHIPPING” Reset 2) Process i. Press “S12”key in SVC remote controller ii. Then you can see “SHIPPING OK” on the RF Mode - Be sure to wait until display on the screen “SHIPPING OK”...

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