Daewoo LCD TV Service Manual
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Daewoo LCD TV Service Manual

Daewoo LCD TV Service Manual

Sl-230a chassis
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Service Manual

LCD TV
CHASSIS :
Model :
DLA-32C7LMBD
DLA-37C7LMBD
DLA-42C7LMBD
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. : TSL230AEF0
SL-230A
MAR. 2007

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Summary of Contents for Daewoo LCD TV

  • Page 1: Service Manual

    S/M NO. : TSL230AEF0 Service Manual LCD TV CHASSIS : SL-230A Model : DLA-32C7LMBD DLA-37C7LMBD DLA-42C7LMBD 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

    1) Requirements 2) Outline of the S/W upgrade tool, which is DTV_Updater.exe 3) How to upgrade decoder of LCD TV 4) How to upgrade PIC micom of LCD TV 10. Schematics : Digital Board 11. Schematics : SMPS 1) FEL-3237A : DLA-32/37C7LMBD 2) FEL-42C2 : DLA-42C7LMBD 12.

  • Page 3: Safety Precaution

    1. Safety Precaution (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: Preliminary Troubleshooting

    - Reconnect HDMI jack. - DVI signal has no sound. Check the output signal of device to be connected to LCD TV. - If you want to use DVI-HDMI cable, you should also connect audio cable into the LCD TV.

  • Page 5: Product Specification

    3. Product Specification 1) Standard of Product Features DLA-32C7LMBD DLA-37C7LMBD DLA-42C7LMBD LCD Panel Panel Model LC320W01-SL01 LC370WX01-SL01 LC420W05-SL01 Screen Size 81.28 cm 93.98 cm 106.68 cm Aspect Ratio 16:9 Resolution 1366 x 768 (WXGA) Pixel Pitch 170.25µm X 510.75µm 0.200mm X 0.600mm 0.227mm X 0.681mm Contrast Ratio 3000 : 1 (MAX)

  • Page 6: Available Input Signal

    PIF : 45.75MHz SIF : 41.25MHz Sound Subcarrier : 4.5MHz, 4.72 MHz Color Subcarrier : 3.58MHz DTV IF : 44MHz (5.38 MHz) ii) Multimedia Mode *Multi Input Resolution Aviable in LCD TV Resolution V-freq HDMI Component Standard 640 X 480...

  • Page 7: Closed Caption Specification

    Product Specification 4) Closed Caption SPEC i) DIGITAL(ATSC) standard inspection pattern : CC708 SPEC STREAM(release to GUMI factory : 2007.02.02) ii) The Caption feature doesn’t work in COMPONENT, HDMI, and PC modes. iii) The availability of captions depends on the program being broadcast. iv) Caption lables and respective meanings.

  • Page 8: Chip(Parent Control) Specification

    Product Specification 5) V Chip(Parental Control) SPEC i) The rating doesn't work in PIP/POP mode. Reservse case is the same. ii) The rating setting is possible only on the menu. iii) Inital password : 2-2-1-1. iv) Universal key cord (When user does not know password) : 5-4-2-2. v) The TV Parental Guidelines.

  • Page 9: Service Remote Controller

    4. Service Remote Controller 1) Key Arrangement Chset/Gumi Recall Volume HEAT-RUN SVPPX Panel PreScale DEMDA/CH MISC Reset Pattern...

  • Page 10: Eeprom Data

    Service Remote Controller 2) EEPROM Data Content Default Value Description ChSet EDID & Ch Set EDID & CH Update in Gumi only Volume Volume Test SVPPX NTSC Sub Brt 0x20 ATV Bright Control NTSC Sub Cont 0x80 ATV Contrast Control AV Sub Brt 0x20 Video Bright Control...
  • Page 11 Service Remote Controller Content Default Value Description Main Comp PC Bright Main Picture COMP & PC Brightness PIP CVBS Cont Sub Picture CVBS Contrast PIP CVBS Bright Sub Picture CVBS Bright PIP DTV Cont Sub Picture DTV Contrast PIP DTV Bright Sub Picture DTV Brightness PIP COMP Cont Sub Picture COMP Contrast...
  • Page 12 Service Remote Controller Content Default Value Description SSC Enable Spread Spectrum ON/OFF SSC Delta Don't Care SSC posi Don't Care SSC nega Don't Care BBE Level BBE Level MVOICE Level MVOICE Level Sound Delay(ms) Sound Delay S10 MISC EDID Update EDID Update Model SL-230A DLA-32C7...

  • Page 13: Block Diagram

    5. Block Diagram -13-...

  • Page 14: Hardware Troubleshooting : Digital Board

    6. Hardware Troubleshooting : Digital Board 1) In spite of sound output, the screen is black. 1.1 In case of ATV, DTV, VIDEO and COMPONENT mode. START Check the input power of IC501 is correct Check the SMPS and input voltage Check the LVDS signal output of IC501 is correct (Pin A14, B14, A15, B15, A16, B16, A17,...
  • Page 15 Hardware Troubleshooting : Digital Board 1.2 In case of PC and HDMI mode START Check PC/HDMI resolution to available resolution in LCD TV Check the input resolution of external device Check the input power of IC501 is correct Check the SMPS and...
  • Page 16 Hardware Troubleshooting : Digital Board 1.3 In case of DTV mode START Check the “Ant. Set” is correct in Menu Select Air/Cable in Ant. Set correctly Check the input power of IC501 is correct Check the SMPS and input voltage Check the LVDS signal output of IC501 is correct (Pin A14, B14, A15, B15, A16, B16, A17,...
  • Page 17 Hardware Troubleshooting : Digital Board 2) In spite of picture display, the sound is not generated. START 1. Confrim AC connection 2. Confrim Power S/W on Does screen appear? 3. Check Video or other PCBs Is the Sound input Jack Check the connection of jack correctly connected? Is the speaker correctly...

  • Page 18: Hardware Troubleshooting : Smps

    7. Hardware Troubleshooting : SMPS 1) FEL-3237A : DLA-32/37C7LMDB 'CHECKING FLOW ABOUT INFERIOR SMPS' (MODEL NAME : FEL-3237A) PAGE : 1/2 1. Stand-by 5V is working out. A. Can you check In-put voltage(DC) of the capacitor(Location No. : C22)? A. Can you check that Vcc voltage of IC3 was supplied from DC15V to DC27V? 1.1 Checking open and short of Out-put side wire cable.
  • Page 19 Hardware Troubleshooting : SMPS 'CHECKING FLOW ABOUT INFERIOR SMPS' (MODEL NAME : FEL-3237A) PAGE : 2/2 3. 5V's Out-put voltage is measured too high or low. A. Checking open and short of IC7. B. Checking open and short of R24, R25. C.

  • Page 20: Fel-42C2 : Dla-42C7Lmbd

    Hardware Troubleshooting : SMPS 2) FEL-42C2 : DLA-42C7LMBD 'CHECKING FLOW ABOUT INFERIOR SMPS' (MODEL NAME : FEL-42C2) PAGE : 1/2 1. Stand-by 5V is working out. A. Can you check In-put voltage(DC) of the capacitor(Location No. : C22)? A. Can you check that Vcc voltage of IC3 was supplied from DC15V to DC27V? 1.1 Checking open and short of Out-put side wire cable.
  • Page 21 Hardware Troubleshooting : SMPS 'CHECKING FLOW ABOUT INFERIOR SMPS' (MODEL NAME : FEL-42C2) PAGE : 2/2 3. 5V's Out-put voltage is measured too high or low. A. Checking open and short of IC7. B. Checking open and short of R24, R25. C.

  • Page 22: Bill Of Materials

    8. Bill Of Materials 1) DLA-32C7LMBD LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTION ZZ100 48B5655D08 TRANSMITTER REMOCON R-55D08 (AAA) M387 4853831001 FRAME STAND ABS BK ZZ110 PTACPWG215 ACCESSORY AS DLA-32C7LMBD M387A 7172401452 SCREW TAPPTITE TT2 TRS 4X14 MFZN BK 3CR 4850Q01210 BATTERY LR03 AAA ALKALINE...
  • Page 23 Bill Of Materials LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTION LED05 DLRF10SWCB LED CHIP HI-LRF10SWC CC105 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 LED06 DLRF10SWCB LED CHIP HI-LRF10SWC CC106 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 LED07 DLRF10SWCB...
  • Page 24 Bill Of Materials LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTION CC321 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 CC510 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 CC322 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 CC511 HCBK104KBA...
  • Page 25 Bill Of Materials LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTION CC606 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 RC216 HRFT000-BA R CHIP 1/10 0 OHM 1608 CC607 HCQK102JBA C CHIP CERA 50V CH 1000PF J 1608 RC217 HRFT224JBA R CHIP...
  • Page 26 Bill Of Materials LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTION RC622 HRFT222JBA R CHIP 1/10 2.2K OHM J 1608 CE505 CEXF1C100V C ELECTRO 16V RSS 10MF 4X7 RC627 HRFT569JBA R CHIP 1/10 5.6 OHM J 1608 CE506 CEXF1C100V C ELECTRO...
  • Page 27 Bill Of Materials LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTION CC149 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 CC720 HCBK103KBA C CHIP CERA 50V X7R 0.01MF K 1608 CC154 HCBK103KBA C CHIP CERA 50V X7R 0.01MF K 1608 CC721 HCBK104KBA...
  • Page 28 Bill Of Materials LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTION IC204 1ST232CD-Q IC CHIP DRIVE ST232CD RA301 HRTS8E000J R CHIP ARRAY 1/16 8P 0 OHM J 3216 IC281 124LC22A-C IC CHIP EEPROM 24LC22AT-ISN SOIC8 REEL RA302 HRTS8E000J R CHIP ARRAY...
  • Page 29 Bill Of Materials LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTION RC211 HRFT101JBA R CHIP 1/10 100 OHM J 1608 RC348 HRFT000-BA R CHIP 1/10 0 OHM 1608 RC212 HRFT101JBA R CHIP 1/10 100 OHM J 1608 RC349 HRFT000-BA R CHIP...
  • Page 30 Bill Of Materials LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTION RC550 HRFT000-BA R CHIP 1/10 0 OHM 1608 RC752 HRFT101JBA R CHIP 1/10 100 OHM J 1608 RC552 HFF601C00B F CHIP FERRITE BEAD 600 OHM SBK 2012 RC753 HRFT101JBA R CHIP...

  • Page 31: Different Materials Besides Mechanical Parts

    Bill Of Materials 2) Different Materials Besides Mechanical Parts PART CODE PART NAME DESCRIPTION DLA-32C7 DLA-37C7 DLA-42C7 CABLE P202A 4850706S42 CONNECTOR 12505HS-06+12505HS-06+ULW=700 & P202A 4850706S36 CONNECTOR 12505HS-06+12505HS-06+ULW=900 CONNECTOR P601A 4850703N44 CONNECTOR SMH250-03+YRT205+YRT110+USW=600 P602A 4850704S80 CONNECTOR SMH250-04+YRT205+YRT110+USW=500 P803C 4850712S09 CONNECTOR 20022HS-12S+20022HS-12S+ULW=300 P803C 4850714S06 CONNECTOR...

  • Page 32: How To S/W Upgrade Tools

    9. How to S/W Upgrade Tools 1) Requirements 1.1 You need followings to upgrade LCD TV. - Decoder S/W, *.ecc to be uploaded - PIC micom S/W, *.hex to be uploaded - RS232 cable - S/W upgrade tool - Service remote controller 1.2 Your computer has 9-pin serial port and the port should not be conflicted with other S/W.

  • Page 33: How To Upgrade Decoder Of Lcd Tv

    How to S/W Upgrade Tools 3) How to upgrade decoder of LCD TV. 3.1 Execute S/W upgrade tool, which is DTV_Updater.exe. 3.2 Select [Setting] -> [Target] -> [Decoder] in the menu. 3.3 Select available serial port in [Setting] -> [Port].(Default port is COM1.)
  • Page 34 How to S/W Upgrade Tools 3.4 Select bitrate, which is [Setting] -> [bits/second] -> [115200] in the menu. 3.5 Open the file, *.ecc to be uploaded in the decoder. File Open -34-...
  • Page 35 How to S/W Upgrade Tools 3.6 If the file is correctly selected, the file name is displayed as followings. Do not check the option [Boot Sector include]. 3.7 Click the [Upload] button. Turn off/on the LCD TV as following message. -35-...
  • Page 36 How to S/W Upgrade Tools 3.8 Decoder is being upgraded as below. 3.9 Click the [Finish] button if the decoder upgrade has been finished as below. And then turn off/on LCD TV with the power cord. -36-...

  • Page 37: How To Upgrade Pic Micom Of Lcd Tv

    How to S/W Upgrade Tools 4) How to upgrade PIC micom of LCD TV. 4.1 Execute S/W upgrade tool, which is DTV_Updater.exe. 4.2 Press S10 key on the service remote controller. Move to [Micom Update] with CH UP/DOWN key. And set the option into ON with VOL UP/DOWN key as below.
  • Page 38 How to S/W Upgrade Tools 4.4 Select available serial port in [Setting] -> [Port].(Default port is COM1.) 4.5 Select bitrate, which is [Setting] -> [bits/second] -> [9600] in the menu. -38-...
  • Page 39 How to S/W Upgrade Tools 4.6 Open the file, *.hex to be uploaded in the PIC. 4.7 If the file is correctly selected, the file name is displayed as followings. Do not check the option [Boot Sector include]. -39-...
  • Page 40 How to S/W Upgrade Tools 4.8 Click the [Upload] button. Execute the AC off/on as following message. 4.9 PIC is being upgraded as below. -40-...
  • Page 41 How to S/W Upgrade Tools 4.10 Click the [Finish] button if the PIC upgrade has been finished as below. LCD TV will be automatically turned on. -41-...

  • Page 42: Schematics : Digital Board

    10. Schematics : Digital Board -42-...
  • Page 43 Schematics : Digital Board -43-...
  • Page 44 Schematics : Digital Board -44-...
  • Page 45 Schematics : Digital Board -45-...
  • Page 46 Schematics : Digital Board -46-...
  • Page 47 Schematics : Digital Board -47-...
  • Page 48 Schematics : Digital Board -48-...
  • Page 49 Schematics : Digital Board -49-...
  • Page 50 Schematics : Digital Board -50-...

  • Page 51: Schematics : Smps

    11. Schematics : SMPS 1) FEL-3237A : DLA-32/37C7LMBD -51-...

  • Page 52: Fel-42C2 : Dla-42C7Lmbd

    Schematics : SMPS 2) FEL-42C2 : DLA-42C7LMBD -52-...

  • Page 53: Mechanical Development Figure

    12. Mechanical Development Figure 1) DLA-32C7LMBD -53-...

  • Page 54: Dla-37C7Lmbd

    Mechanical Development Figure 2) DLA-37C7LMBD -54-...

  • Page 55: Dla-42C7Lmbd

    Mechanical Development Figure 3) DLA-42C7LMBD -55-...
  • Page 56 DAEWOO ELECTRONICS CORP. 686, AHYEON-DONG, MAPO-GU, SEOUL, KOREA. C.P.O. BOX 8003 SEOUL KOREA PRINTED DATE : Dec. 2006...

This manual is also suitable for:

Dla-32c7lmbdDla-37c7lmbdDla-42c7lmbd

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