Daewoo DLT - 42U1GMB Service Manual
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Daewoo DLT - 42U1GMB Service Manual

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Service Manual

LCD TV
CHASSIS : SL-701T
Model : DLT - 42U1GMB
DLT - 42G1LTBD
DLT - 46U1UMB
DLT - 46U1STB
S/M NO. : DSL701TEF0
Dec. 2007

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Summary of Contents for Daewoo DLT - 42U1GMB

  • Page 1: Service Manual

    S/M NO. : DSL701TEF0 Service Manual LCD TV CHASSIS : SL-701T Model : DLT - 42U1GMB DLT - 42G1LTBD DLT - 46U1UMB DLT - 46U1STB Dec. 2007...

  • Page 2: Table Of Contents

    Contents ………………………………………………………………………………… 3 1.Safety Precaution 2.Product Specification …………………………………………………………………………… 4 2-1.Product Specification………………………………………………………………………… 4 2-2.Available Input Signal ……………………………………………………………………… 5 3.Block Diagram …………………………………………………………………………………… 8 3-1.Signal Block Diagram ……………………………………………………………………… 8 3-2.Power Tree …………………………………………………………………………………… 9 4.SERVICE MODE ………………………………………………………………………………… 10 4-1.EEPROM initial DATA ……………………………………………………………………… 10 4-2.Description of SERVICE MODE ITEM …………………………………………………… 12 5.Trouble Shooting …………………………………………………………………………………...

  • Page 3: 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 a 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 4: Product Specification

    2. Product Specification 2-1.PRODUCT SPECIFCATION Features DLT-46U1UMB DLT-42U1GMB DLT-46U1STB DLT-42G1LTBD Screen Size 46” 42” 46” 42” Aspect Ratio 16 : 9 16 : 9 16 : 9 16 : 9 Resolution 1920 x 1080 1920 x 1080 1366 x 768 1366 x 768 LCD Panel 0.17675mm x...

  • Page 5: 2-2.Available Input Signal

    Product Specification 2-2.Available Input Signal 2-2-1.DLT-46U1UMB, DLT-42U1GMB Resolution V-freg HDMI PC(D-Sub) Component Standard 60Hz 640 x 480 75Hz VESA Standard 60Hz VESA Standard 800 x 600 75Hz 60Hz VESA Standard 1024 x 768 75Hz VESA Standard 60Hz VESA Standard 1280 x 1024 75Hz VESA Standard 480P...
  • Page 6 Product Specification 2-2-2.DLT-46U1STB, DLT-42G1LTBD Resolution V-freg HDMI PC(D-Sub) Component Standard 60Hz 640 x 480 72Hz VESA Standard 75Hz 60Hz VESA Standard 800 x 600 72Hz VESA Standard 75Hz 60Hz VESA Standard 1024 x 768 70Hz VESA Standard 75Hz VESA Standard 1360 x 768 60Hz 480P...
  • Page 7 Product Specification 2-2-3.Available PIP Mode AV 3/ Main/Sub HDMI 1 HDMI 2 AV 1 AV 2 S-Video AV 1 AV 2 AV 3/ S-Video HDMI 1 HDMI 1...

  • Page 8: Block Diagram

    3. Block Diagram 3-1.Signal Block Diagram...

  • Page 9: 3-2.Power Tree

    Block Diagram 3-2.Power Tree...

  • Page 10: Service Mode

    4. SERVICE MODE Using the Service Remote controller, you can enter service mode directly. SERVICE REMOCON : R-34SVC(S/N:48B3034SVC) 4-1.EEPROM initial DATA Function Name Details Default Adjustment Heat Run Mode Gumi channel map write Volume Test Volume 0->32->63->L->R 1.Connect jumper(I2C) 2.Press "S4" key and then, TV set display "EDID WRITE OK"...
  • Page 11 SERVICE MODE Video sub bri Video sub Cb Video sub Cr Video sub hue Video sub cont Video YC delay Pedestal level Anti alias PIP Brightness PIP Contrast Y/G Clamp Device control 1 Pb Clamp Pr Clamp Y/G Gain Peaking Threthold Peaking Pos-Gain Peaking Neg-Gain Threshold...

  • Page 12: 4-2.Description Of Service Mode Item

    SERVICE MODE Main : Analog upgrade Software Upgrade DVB-T : DVB-T upgrade I2C Stop For debugging mode Shipping 4-2. Description of SERVICE MODE ITEM A. S1(1): Heat-Run Key B. S2(2): Gumi Channel Map Write C. S3(3): Volume Test => This key can check sound D.

  • Page 13: Trouble Shooting

    5. Trouble Shooting 5-1. No signal : OSD is working but on images are displaying -13-...
  • Page 14 Trouble Shooting A. When “No signal” in RF, SCART1,SCART2,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): CC613 near IC601 (Top) -Main TP(SCART1): LC019 near JP208 (Top) -Main TP(SCART2): LC213 near JP207 (Top) -Main TP(AV3): RC055 near P240...
  • Page 15 Trouble Shooting C signal (RC050) 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): RC233 near JP211 (Top) -Main TP (COMP_Pb): RC234 near JP211 (Top) -Main TP (COMP1_Pr): RC235 near JP211 (Top)
  • Page 16 Trouble Shooting Pb signal (RC234) Pr Signal (RC235) D. When “No Signal” in PC 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(R signal): RC629 near IC601(Top) -Main TP(G signal): RC627 near IC601 (Top) -Main TP(B signal): RC628 near IC601 (Top)
  • Page 17 Trouble Shooting 1024 X 768, 60Hz R signal (RC629 near IC601) G Signal (RC627 near IC601) -17-...
  • Page 18 Trouble Shooting B Signal (RC628 near IC601) Horizontal sync (RC630 near IC601) Vertical sync (RC640 near IC601) -18-...
  • Page 19 Trouble Shooting E.When “No Signal” in HDMI 1) First check if other inputs are working =>If other inputs are not working, replace MAIN 2) Checking waveforms with Color Bar Pattern (Using the oscilloscope) -Main TP (RC672, RC671, RC670, RC668, RC667, RC666, RC665) near IC601 =>...

  • Page 20: 5-2.When No Sond

    Trouble Shooting 5-2. 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 ja correctly connected? Is the Speaker Check the connection of S correctly connected? Perhaps IC009 or IC008 P622A and P...

  • Page 21: 5-4.Facts You Must Know When Trouble Diagnosing Or Repairing

    Trouble Shooting 5-4. 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.

  • Page 22: Schematic

    6. Schematic Diagram -22-...
  • Page 23 Circuit Diagram -23-...
  • Page 24 Circuit Diagram -24-...
  • Page 25 Circuit Diagram -25-...
  • Page 26 Circuit Diagram -26-...
  • Page 27 Circuit Diagram -27-...
  • Page 28 Circuit Diagram -28-...
  • Page 29 Circuit Diagram -29-...
  • Page 30 Circuit Diagram -30-...
  • Page 31 Circuit Diagram -31-...
  • Page 32 Circuit Diagram -32-...
  • Page 33 Circuit Diagram -33-...

  • Page 34: Printed Circuit Board

    7. Printed Circuit Board TOP PCB BOTTOM PCB -34-...

  • Page 35: Mechanical Exploded Diagram

    8. Mechanical Exploded Diagram DLT-42G1 -35-...
  • Page 36 Exploded View DLT-42U1 -36-...
  • Page 37 Exploded View DLT-46U1 -37-...

  • Page 38: Part List

    9. Service part list DLT-42G1LTBD PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION CE402 HCELH100MC C CHIP ELECTRO 25V 10MF CM 4052 parts_code parts_name parts_desc 4850Q01210 BATTERY LR03 AAA ALKALINE CE403 HCELH100MC C CHIP ELECTRO 25V 10MF CM 4052 CE404 HCELH100MC C CHIP ELECTRO...
  • Page 39 1/10 62 OHM J 1608 5S50101Z90 SW TACT THVV502GDA RC17 HRFT000JBA R CHIP 1/10 0 OHM J 1608 TM100 4850M002ET MODULE (TOUCH BUTTON) DAEWOO U1 MSDV1.1 RC19 HRFT620JBA R CHIP 1/10 62 OHM J 1608 V901 485LD00420 LCD PANEL LC420WU5-SLA2 -39-...
  • Page 40 Service part list PART CODE PART NAME DESCRIPTION V901 485LD16423 LCD PANEL LC420WX7-SLE1 VM100 4850M001ET MODULE VFD 14SL03HS1 X401 5XJ14R31AE CRYSTAL QUARTZ HC-49/S 14.31818MHZ 30PPM ZZ110 PTACPWG265 ACCESSORY AS DLT-42U1GMR ZZ110 PTACPWG336 ACCESSORY AS DLT-42G1LTBD ZZ120 PTBCSHG265 COVER BACK AS DLT-42U1GMR ZZ120 PTBCSHG336...
  • Page 41 4856017800 SCREW SPKR FIX SWRM+SECC 3CR CC042 HCBF105KBA C CHIP CERA 16V X7R K 1MF 1608 TM100 4850M002ET MODULE (TOUCH BUTTON) DAEWOO U1 MSDV1.1 CC098 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 V901 485LD00420 LCD PANEL LC420WU5-SLA2 CC101...
  • Page 42 Service part list PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION CC124 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 CC2A3 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 CC125 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 CC2A4 HCBH224KBA C CHIP CERA...
  • Page 43 Service part list PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION CC511 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 CC736 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 CC512 HCBK103KBA C CHIP CERA 50V X7R 0.01MF K 1608 CC737 HCBK104KBA C CHIP CERA...
  • Page 44 Service part list PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION LC229 HFF300B01A F CHIP FERRITE BEAD 30 OHM UPB 1608 RC189 HRFT224JBA R CHIP 1/10 220K OHM J 1608 LC230 HFF300B01A F CHIP FERRITE BEAD 30 OHM UPB 1608 RC192 HRFT000JBA R CHIP...
  • Page 45 Service part list PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION RC361 HRFT000JBA R CHIP 1/10 0 OHM J 1608 RC692 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 RC362 HRFT000JBA R CHIP 1/10 0 OHM J 1608 RC693 HRFT000JBA R CHIP...
  • Page 46 Service part list PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION CE202 CEXF1H100A C ELECTRO 50V RSM 10MF (5X7) TP ZZ200 PTMPJ1G265 PCB MAIN CHIP A AS DLT-42U1GMR CE203 CEXF1H220A C ELECTRO 50V RSM 22MF (6.3X7) 2193220010 SOLDER CREAM(PB-FREE) LST309-M(SN+3.0AG/0.5CU) CE204 CEXF1C101V...
  • Page 47 Service part list PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION CC2A9 HCBH224KBA C CHIP CERA 25V X7R 0.22MF K 1608 CE402 HCELH100MC C CHIP ELECTRO 25V 10MF CM 4052 CC2B0 HCBH224KBA C CHIP CERA 25V X7R 0.22MF K 1608 CE403 HCELH100MC C CHIP ELECTRO...
  • Page 48 Service part list PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION DZ033 DUMZ8R2T-B DIODE CHIP ZENER UMZ-8.2T (TAPING) LC006 HFFH1M501B F CHIP FERRITE BEAD HH-1M3216-501J DZ034 DUMZ8R2T-B DIODE CHIP ZENER UMZ-8.2T (TAPING) LC007 HFFH1M501B F CHIP FERRITE BEAD HH-1M3216-501J DZ035 DUMZ8R2T-B...
  • Page 49 Service part list PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION LCA15 HFEACM201A F CHIP EMI 90 OHM ACM 2012 RA614 HRTS8E101J R CHIP ARRAY 1/16 8P 100 OHM 3216 LCA16 HFEACM201A F CHIP EMI 90 OHM ACM 2012 RA615 HRTS8E101J R CHIP ARRAY...
  • Page 50 Service part list PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION RC104 HRFT330JBA R CHIP 1/10 33 OHM J 1608 RC252 HRFT101JBA R CHIP 1/10 100 OHM J 1608 RC113 HRFT000JBA R CHIP 1/10 0 OHM J 1608 RC253 HRFT101JBA R CHIP...
  • Page 51 Service part list PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION RC349 HRFT332JBA R CHIP 1/10 3.3K OHM J 1608 RC613 HRFT000JBA R CHIP 1/10 0 OHM J 1608 RC350 HRFT332JBA R CHIP 1/10 3.3K OHM J 1608 RC614 HRFT000JBA R CHIP...
  • Page 52 Service part list PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION RC822 HRFT101JBA R CHIP 1/10 100 OHM J 1608 ZZ310 PTUNSWG265 PCB UNION AS DLT-42U1GMR RC826 HRFT101JBA R CHIP 1/10 100 OHM J 1608 IC290 1R24FH1B— IC PREAMP R24FH1B RC827 HRFT101JBA...
  • Page 53 Service part list DLT-46U1STB PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION CC401 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 M231A 7178301052 SCREW TAPPTITE TT2 WAS 3X10 MFZN BK 3CR CC402 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 M321A 7172401051 SCREW TAPPTITE...
  • Page 54 Service part list PART CODE PART NAME DESCRIPTION RC431 HRFT332JBA R CHIP 1/10 3.3K OHM J 1608 RC432 HRFT332JBA R CHIP 1/10 3.3K OHM J 1608 RC434 HRFT330JBA R CHIP 1/10 33 OHM J 1608 RC435 HRFT470JBA R CHIP 1/10 47 OHM J 1608 RC436 HRFT470JBA R CHIP...
  • Page 55 Service part list DLT-46U1UMB PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION REMARK parts_code parts_name parts_desc ZZ200 PTFMSJG337 MASK FRONT AS DLT-46U1STB M191A 7173301052 SCREW TAPPTITE TT2 BIN 3X10 MFZN BK 3CR ZZ200 PTMPJRG330 PCB MAIN RADIAL AS DLT-46U1UMB M1F0 4851F02400...

This manual is also suitable for:

Dlt - 42g1ltbdDlt - 46u1umbDlt - 46u1stb

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