Daewoo DLT-26C2 Service Manual
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Daewoo DLT-26C2 Service Manual

Daewoo DLT-26C2 Service Manual

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1. Safety Precaution ----------------------------------------------------- 1
2. Product Specification ----------------------------------------------- 2
2-1. Specification ----------------------------------------------------- 2
2-2. Available Input Signal ---------------------------------------- 3
3. Block Diagram --------------------------------------------------------- 4
3-1. Signal Block Diagram ---------------------------------------- 4
3-2. Power Tree ------------------------------------------------------- 5
4. Description of Each Block ----------------------------------------- 6
5. Service Mode -------------------------------------------------------- 11
6. Trouble Shooting --------------------------------------------------- 14
7. Software Upgrade --------------------------------------------------- 26
8. Schematic Diagram-------------------------------------------------- 35
9. Printed Circuit Board ----------------------------------------------- 42
10. Mechanical Exploded Diagram -------------------------------- 44
11. Part list----------------------------------------------------------------- 48
CONTENT

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Summary of Contents for Daewoo DLT-26C2

  • Page 1: Table Of Contents

    CONTENT 1. Safety Precaution ----------------------------------------------------- 1 2. Product Specification ----------------------------------------------- 2 2-1. Specification ----------------------------------------------------- 2 2-2. Available Input Signal ---------------------------------------- 3 3. Block Diagram --------------------------------------------------------- 4 3-1. Signal Block Diagram ---------------------------------------- 4 3-2. Power Tree ------------------------------------------------------- 5 4. Description of Each Block ----------------------------------------- 6 5.

  • Page 2: Safety Precaution

    1. Safety Precautions (1) When moving or laying down a LCD Set, please deal with care. Avoid any impact towards the LCD Set. (2) Do not leave the broken LCD Set on for a long time. To prevent any further damages, after check the broken Set s condition, make sure to turn the power (AC) off.

  • Page 3: Product Specification

    2.Product Specification 2-1. Specification MODEL DLT-26C2/C3, DLT-32C1/C2/C3, DLT-37C3 SL-230T CHASSIS EUROPE COUNTRY PAL B/G, D/K, I/I, Receiving system SECAM B/G, D/K, L/L’, NTSC(AV) TV SYSTEM FM MONO, 2-CARRIER, NICAM stereo (ANALOG) Sound transmission 99CH Memory channel DVB-T Tuning system TV SYSTEM...

  • Page 4: Available Input Signal

    2-2. Available Input Signal Resolution V-freq HDMI Standard Component 60HZ VESA Standard 640 × 480 72HZ VESA Standard 75HZ VESA Standard 60HZ VESA Standard 800 × 600 72HZ VESA Standard 75HZ VESA Standard 60HZ VESA Standard 1024 × 768 70HZ VESA Standard 75HZ VESA Standard...

  • Page 5: Block Diagram

    FLASH(8M) S29JL064H70T F100 (I103) INVE- VCT6973P (IC501) SMPS RTER Analog IF IC TUNER TDA9886T (IC506) Analog inter Video lacer Scaler Decoder & LVDS Digital IF IC DRX3975 (I300) 656 in Decoder MPEG EEPROM Switching 24LC32 IC (I202) Decoder 3X8 RGB (IC503) Decoder MDE9518...

  • Page 7: Description Of Each Block

    4. DESCRIPTION OF AV PART 1. IC501 (VCT6973G-FA) : IC family of high-quality single chip TV processors AUDIO - Sound IF input - FM Stereo Radio and RDS/RBDS - Multistandard TV-sound demodulation All A2/NICAM standard BTSC/SAP with DBX EIA-J - Baseband sound processing for loudspeaker channel Volume, bass, treble, loudness, balance Spatial effect Micronas BASS...
  • Page 8 Lipsync function CONTROLLER - High-performance 8-bit microcontroller, 8051 compatible - Up to 512kbyte in system program Flash - WST, PDC, VPS, and WSS acquisition - Close caption and V-chip acquisition - Up to 10 page on chip teletext memory - Up to 1000pages with internal memory - Up to 30 GPIO VIDEO - CVBS, S-VHS, YCbCr and RGB inputs...
  • Page 9 and component TV, DTV and HDTV - One DVI/HDMI single link input - HDMI 1.0 compliant - Smart sync detection with HSYNC, VSYNC and DE period report HDMI INTERFACE - 25~170MHz operation - Support High Definition Multimedia Interface – HDMI 1.0 - Support High bandwidth Digital Content Protection –...
  • Page 10 Digital Video Output Interface - Support color space conversion and sRGB - Support 24-bit 4:4:4 YCbCr/RGB output formats - Support 16-bit 4:2:2 YCbCr output formats(ITU.601) - Support 8-bit 4:2:2 YCbCr output formats(ITU.656) 3. I100 (MDE9518D) – MPEG DECODER - Single-chip digital-TV DVB decoder, including transport stream demultiplexer, Embedded descrambler, MPEG audio, and video decoder - Decodes FTA(Free-To-Air), CA(Conditional Access), and DVB-scrambled Broadcasts...
  • Page 11 4. I300(DRX3975D) – COFDM DEMODULATOR - Integrated microprocessor to perform autonomous detection and operation of All possible DVB-T modes, without interaction with the host processor - Meets all international DVB-T performance requirements standard : Nordig Unified, DTG, EICTA...

  • Page 12: Service Mode

    5. Service mode 1. Description of user menu 1) Picture - Picture Mode : Favourite - Brightness : 42 - Contrast : 48 - Colour : 32 - Sharpness : 32 - Tint : 0 (NTSC only) - N.R : Off 2) Sound - Sound Effect :Flat - AVC : Off...
  • Page 13 2) RECALL key : exit 3. Volume item key) 1) S3 key : Volume < 0 > (min.) 2) S3 key : Volume < 30 > (midium) 3) S3 key : Volume < 63 > (max.) 4) S3 key : Volume < 63 > (right) 5) S3 key : Volume <...
  • Page 14 1) S10 key : svc. 060906 B3 (example) 2) RECALL key : exit 3) S10 key (4 times) : CPU off => Main power off : exit 11. Inch option item (S11 key) * AUO, LPL PANEL 1) S11 key : Inch option <26"A> 2) S11 key : Inch option <37"L>...

  • Page 15: Trouble Shooting

    6. Trouble Shooting 1. No signal : OSD is working but on images are displaying...
  • Page 16 A. When “No signal” in CVBS (RF, AV1,AV2,AV3) 1) First check if other inputs are working =>If other inputs are not working, replace MAIN PCB 2) Checking waveforms with Color Bar Pattern (Using the oscilloscope) -Main TP (RF): CC561 near IC501 (Top) -Main TP(AV1): LC730 near JP906 (Top), CC560 near IC501 (Top) -Main TP(AV2): LC733 near JP907 (Top), CC559 near IC501 (Top) -Main TP(AV3): LC701 near JP902 (Top), CC558 near IC501 (Top)
  • Page 17 C signal (LC703, CC557) C. When “No Signal” in Y/Pb/Pr signal (Component) 1) First check if other inputs are working =>If other inputs are not working, replace MAIN PCB 2) Checking waveforms with Color Bar Pattern (Using the oscilloscope) -Main TP (COMP_Y): LC709, LC710 near JP904 (Top), CC592 near IC501 (Top) -Main TP (COMP_Pb): LC711, LC712 near JP904 (Top), CC593 near IC501 (Top) -Main TP (COMP1_Pr): LC713, LC714 near JP904 (Top), CC591 near IC501 (Top) =>...
  • Page 18 Pr Signal (CC591) D. When “No Signal” in PC 1) First check if other inputs are working =>If other inputs are not working, replace MAIN PCB 2) Second check IC705 (Sync switching IC) condition. - 16 pin above 4.3V (IC B+) - 9 pin is low - 10 pin is low.
  • Page 19 CC585 near IC501(Top) => If all TP signal does not appear, replace MAIN PCB. 1024 X 768, 60Hz R signal (CC550 near IC501) G Signal (CC549 near IC501)
  • Page 20 B Signal (CC594 near IC501) Horizontal sync (CC548 near IC501) Vertical sync (CC585 near IC501)
  • Page 21 E. When “No Signal” in HDMI 1) First check if other inputs are working =>If other inputs are not working, replace MAIN or SUB PCB 2) Second check IC705 (Sync switching IC) condition. - 16 pin above 4.3V (IC B+) - 9 pin is low - 10 pin is high.
  • Page 22 Vertical sync (RCD7 near ICD10)
  • Page 23 When No Sound Check Start 1.Confirm AC connection Does Screen appear? 2.Confirm Power S/W ON 3.Check Video or other PCBs Is the Sound input Jack Check the connection of jack correctly connected? Is the Speaker correctly Check the connection of Speaker connected? Perhaps IC501 problem.
  • Page 24 When Key does not operate Check Start Does LED turn on 1. Confirm AC connection in Red? 2. Confirm Power S/W ON 1. Check the connection to main PCB. Does LED turn on 2. Check the main PCB or Sub PCB. in Green? Key PCB has a trouble.
  • Page 25 When Remote Controller does not operate Check Start 1. Confirm AC connection Does LED turn on 2. Confirm Power S/W ON in Red? Check the Battery of Remote Does Remote Controller Controller operate? Does Set turn on with 1. Check the connection to main PCB. Key operation? 2.
  • Page 26 Facts you must know when trouble diagnosing or repairing. A. Trouble diagnosing and repairing of set mean find out which PCBs or blocks are not working and replace them with new PCBs. Repairing the broken PCBs are not necessary. Keep the broken PCBs and return them to service center or R&D center. B.

  • Page 27: Software Upgrade

    7. Software Upgrade Visual I2C Program Install Manual 1. Setup_LptDrv_v020201_XP_2000.exe Must Reboot Computer Execution Start – Program – MICRONAS – LptDrv – LptDrvTest and confirm the below picture...
  • Page 28 2. Setup_Visual_I2C_v3-2-3b8h.exe 3. Setup_VI2C_for_VCT6wxyP_v0202.exe 4. Uncheck the checkbox.
  • Page 29 5. Uncompress VI2C.zip (Replace all of the file in C:\VI2C) Software Upgrade Manual TV Power On states…… 1. Connect the RS232C + zig cable. 2. Execution C:\VI2C\ic\vct6wxyP\vct69xyp_main_graphic.vi2c & Click Click...
  • Page 30 4. Confirm Bootloader Version : (Click) 5. Click Erase Flash Double Click...
  • Page 31 7. Choose the upgrade file and click OK button 8. Click Load Bin Flash...
  • Page 32 9. After complete Progress, disconnect 9-Pin 232C cable and AC power off/on 10. Press the R -> G -> Menu button of remote controller, choose the Reset TV-set (direction key), press the Green Key Re-booting automatically 11. Press the OK/SELECT Key, then the service mode window is disappeared Trouble shooting Case 1 :Disappeared or canceled the Progress...
  • Page 33 MDE Program Upgrade TV power on States..1. Copy and paste the starter folder in your computer drive. 2. Open the starter folder and execution starter.exe 3. Click the Option->Preference->Download 4. Click and Choose the upgrade file. and then press Apply button.
  • Page 34 5. Press the open/close serial connection button. 6. Connect the RS232C cable to serial port of PC. 7. Press the button of service remote controller, then “MDE(DVBT) Download <No>” is displayed in TV Set. Press the S6 button again, <No> will be changed <Yes>, and then <ping>...
  • Page 35 9. After progressive bar is shown, a few minute later “OK” is displayed. Then MDE upgrade is completed.
  • Page 67 2.DLT-32C3AMBS Different part list DLT-26C3AMBS DLT-32C3AMBS 7178301052 M191A SCREW TAPPTITE PTCACAG149 4852093601 M201 MASK FRONT PTFMSJG149 4852093701 M201 MASK FRONT PTFMSJG150 7178301051 M201A SCREW TAPPTITE PTSBMSG149 7178301051 M201B SCREW TAPPTITE PTSBMSG149 7173301052 M201B SCREW TAPPTITE PTCACAG150 4856815900 M201C CLAMP WIRE PTCACAG149 7173301052 M201C...
  • Page 68 7173301052 M721A SCREW TAPPTITE PTCACAG150 7178301052 M723A SCREW TAPPTITE PTCACAG149 7173301052 M723A SCREW TAPPTITE PTCACAG150 7178301052 M723B SCREW TAPPTITE PTCACAG149 7173301052 M723B SCREW TAPPTITE PTCACAG150 4858071500 M801 BOX CARTON PTPKCPG149 4858071300 M801 BOX CARTON PTPKCPG150 485819CS00 M811 PTPKCPG149 485819CR00 M811 PTPKCPG150 4858215601 M822...
  • Page 69 PTSBMSG150 ZZ310 PCB SUB MANUAL AS PTCACAG150...

This manual is also suitable for:

Dlt-26c3Dlt-32c1Dlt-32c2Dlt-32c3Dlt-37c3

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