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DAEWOO ELECTRONICS DLM-26C2 Service Manual

Chassis sl-223m
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Service Manual
LCD TV
CHASSIS :
Model :
DLM-26C2
DLM-26C3
DLM-32C1
DLM-32C2
DLM-32C3
DLM-37C3
DLM-42C1
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. : DSL223MEF0
SL-223M
OCT. 2006

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Summary of Contents for DAEWOO ELECTRONICS DLM-26C2

  • Page 1 S/M NO. : DSL223MEF0 Service Manual LCD TV CHASSIS : SL-223M Model : DLM-26C2 DLM-26C3 DLM-32C1 DLM-32C2 DLM-32C3 DLM-37C3 DLM-42C1 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 1. Safety Precautions 2. Product Specification 2-1. PRODUCT SPECIFICATION 2-2. Available Input Signal 3. Block Diagram 4. Description of Each Block 4-1. Block Diagram of Main IC and TP 4-2. Overview 4-2-1. Composite video, Y/C(S-Video) and SCART(CVBS, RGB) composite video 4-2-2.

  • Page 3: Safety Precautions

    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 4: Product Specification

    2. Product Specification 2-1. PRODUCT SPECIFICATION Features DLM-26C2AMSB DLM-32C2AMSB LCD Panel Screen Size 26” 32” Aspect Ratio 16 : 9 16 : 9 Resolution 1366 X 768(WXGA) 1366 X 768(WXGA) Pixel Pitch 0.4215mm 0.51075 Contrast Ratio 1000 : 1 800 : 1 TV System Receiving System PAL, SECAM...
  • Page 5 Product Specification Features DLM-37C3LMBS DLM-42C1LMR LCD Panel Screen Size 37” 42” Aspect Ratio 16 : 9 16 : 9 Resolution 1366 X 768(WXGA) 1366 X 768(WXGA) Pixel Pitch 0.2mm X 0.6mm X RGB 0.227mm X 0.681mm X RGB Contrast Ratio 800 : 1 550 : 1 TV System...

  • Page 6: Available Input Signal

    Product Specification 2-2. Available Input Signal 2-2-1. HDMI/ PC/COMPONENT Resolution V-freq HDMI PC(D-Sub) Component Standard 60Hz 640 X 480 72Hz 75Hz VESA Standard 60Hz VESA Standard 800 X 600 72Hz VESA Standard 75Hz 60Hz VESA Standard 1024 X 768 70Hz VESA Standard 75Hz VESA Standard...

  • Page 7: Block Diagram

    3. Block Diagram...

  • Page 8: Description Of Each Block

    4. Description of Each Block 4-1. Block Diagram of Main IC and TP...

  • Page 9: Overview

    Description of Each Block 4-2. Overview Digital PCB is Multi Media circuit board that can process various input signals such as video, component, PC, HDMI, and analog TV signal. 4-2-1. Composite video, Y/C(S-Video) and SCART(CVBS, RGB) composite video - Flow Chart of RF, Video, S-Video Signal...
  • Page 10 Description of Each Block Y signal(input to IC505) Location : CC451 Color signal(input to IC505) Location : CC456 -10-...

  • Page 11: Dtv/Dvd Signal

    Description of Each Block CVBS signal(input to IC505) Location : CC455 4-2-2. DTV/DVD signal Y signal(input to IC505) Location : CC445 -11-...
  • Page 12 Description of Each Block Pb signal(input to IC505) Location : CC446 Pr signal(input to IC505) Location : CC447 -12-...

  • Page 13: Pc(Personal Computer) Signal

    Description of Each Block 4-2-3. PC(Personal Computer) signal R signal(input to IC505) Location : CC454 G signal(input to IC505) Location : CC452 B signal(input to IC505) Location : CC453 -13-...
  • Page 14 Description of Each Block Horizontal sync(Output of IC505) Location : RC458 Vertical sync(Output of IC505) Location : RC459 -14-...

  • Page 15: Hdmi Signal

    Description of Each Block 4-2-4. HDMI signal Location : RC465, RC466, RC467, RC468, RC469, RC470, RC471, RC472 4-2-5. R/G/B PROCESSING(SCART1, TELETEXT R/G/B) R signal (input to IC505) Location : RC450 -15-...
  • Page 16 Description of Each Block G signal(input to IC505) Location : RC448 B signal(input to IC505) Location : RC449 -16-...

  • Page 17: Audio Signal Processing, Key, And Led

    Description of Each Block 4-2-6. Audio signal processing, KEY, and LED - Flow Chart of Audio signal COMP-L sound Location : ZA225 -17-...
  • Page 18 Description of Each Block IC602 input Location : RC685, RC687 IC602 output Location : L606, L610 -18-...
  • Page 19 Description of Each Block SIF input Location : CC654 Headphone out Location : RC611, RC612 -19-...
  • Page 20 Description of Each Block SPDIF out Location : RC655 I2S input Location : RC622(CLK) -20-...
  • Page 21 Description of Each Block Location : RC623(WS) Remote control signal Location : RC722 -21-...

  • Page 22: Power Pcb

    Description of Each Block 4-3. POWER PCB 4-3-1. POWER SPEC • Rating : 110V~240V • Regulating Method : • Input Frequency : 50/60Hz • Inrush Current : Below 80A at AC230V • Output Voltage and Current are shown below. Minimum Maximum Output Current Output...
  • Page 23 Description of Each Block 4-3-2. Connectors A. CN7, CN8 pin Spec(YEN-HO 20010WS-14 14P) CN7(AUO PANNEL) CN8(SAMSUNG PANNEL) PIN NO. OUTPUT PIN NO. OUTPUT +24V +24V +24V +24V +24V +24V +24V +24V +24V +24V DIMIMING INV ON/OFF INV ON/OFF DIMIMING B. CN5, CN6 Pin Spec(YEON-HO 20010WS -12 12P) CN5, CN6(LG PANNEL) PIN NO.
  • Page 24 Description of Each Block C. CN2 Pin Spec(YEON-HO YW025-04 4P) PIN NO. OUTPUT +29V +29V D. CN4 Pin Spec(YEON HO SMW025-09 9P) PIN NO. OUTPUT +12V +12V +5VS PWR ON/OFF +5VS E. CN3 Pin Spec(CA3237W-300-08P) PIN NO. OUTPUT DIMIMING INV ON/OFF +5VS +5VS +12V...

  • Page 25: Service Mode

    5. SERVICE MODE 5-1. Checking initial Menu Data 5-1-1. Check initial data of User Menu A. Picture - Mode : Standard - Brightness : 32 - Contrast : 58 - Color : 32 - Sharpness : 32 - Tint : 0 - ColourTemp : Normal B.

  • Page 26: Entering Service Mode

    SERVICE MODE • Name : _____ • System : PAL • Sound : BG • Fine Tuning : 0 - Edit 5-2. Entering SERVICE MODE Using the Service Remote controller, you can enter service mode directly. 5-2-1. Adjustment REMOCON and EEPROM initial DATA A.
  • Page 27 SERVICE MODE Function Name Details Remark Default Adjustment Default Adjustment Video sub bri Do Not Use Video sub cont Do Not Use Video sub Cb Do Not Use Video sub Cr Do Not Use Video sub hue Do Not Use Video YC delay Do Not Use Pedestal level...
  • Page 28 SERVICE MODE 5-2-2. 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. S4(4) : EDIE WRITE => Using this key, you can update EDID data. E.

  • Page 29: White Balance Adjusting Method

    6. WHITE BALANCE Adjusting Method To adjust WHITE BALANCE, refer to below process. 6-1. Insert white pattern to component input Signal Generator : 802BT (By Quantum Data) Resolution : 1280x720p @60Hz, Pattern : Grey Scale (11 step) 6-2. Confirm ‘dimming’ in service mode (=s10) 32C3 = 0, 26C3 = 255 6-3.

  • Page 30: Main Pcbs Trouble Diagnosis

    7. Main PCBs Trouble Diagnosis 7-1. MAIN PCB Trouble Diagnosis 7-1-1. Common checking process when “No signal of Noraster” No signal : OSD is working but no images are displaying No raster : OSD as well as images in not working Check Start Is a weak 1.
  • Page 31 Main PCBs Trouble Diagnosis A. When “No signal” in CVBS(RF, AV) 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) : CC455, C102 - Main TP(AV) : LC205, CC444 -31-...
  • Page 32 Main PCBs Trouble Diagnosis B. When “No signal” in Y/C signal(S-Video) 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(Y signal) : CC451 - Main TP(C signal) : LC202, CC456 -32-...
  • Page 33 Main PCBs Trouble Diagnosis 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(COMP1_Y) : CC445, LC224, LC221 - Main TP(COMP1_Pb) : CC446, LC222, LC225 -33-...
  • Page 34 Main PCBs Trouble Diagnosis - Main TP(COMP1_Pr) : CC447, LC226, LC223 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) : LC217, CC454 -34-...
  • Page 35 Main PCBs Trouble Diagnosis - Main TP(G signal) : CC452, LC218 - Main TP(B signal) : LC219, CC453 - Main TP(H-sync) : RC458 -35-...
  • Page 36 Main PCBs Trouble Diagnosis - Main TP(V-sync) : RC459 E. When “No signal” in HDMI 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 : RC465, RC466, RC467, RC468, RC469, RC470, RC471, RC472 -36-...

  • Page 37: When No Sound

    Main PCBs Trouble Diagnosis 7-1-2. When No Sound A. Overview Check Start 1.Check AC connection Do images displ-ay on screen? 2.Check Power S/W ON 3.Check Main PCB Check Sound Mute On? Cancel Sound MUTE Check the connection of Is the Speaker con-nection connected? Speaker Perhaps IC601 Problem Check RC685, RC687...
  • Page 38 Main PCBs Trouble Diagnosis 1) First check if images are displaying -> If images are not displaying, replace MAIN PCB 2) Checking waveforms with 1KHz Sound pattern B. Main TP - Input to IC601 : CC614, CC615(Scart 1) , CC612, CC613(Scart2), CC611, CC610(AV), CC650, CC651(COMP), CC625 ,CC626(PC L/R) - Output of IC602 : L606, L610 -38-...

  • Page 39: When Control Key Does Not Operate

    Main PCBs Trouble Diagnosis 7-1-3. When Control Key does not operate Check Start 1. Check AC connection 2. Check Power S/W ON After turn on the power, does LED turn on red light? 3. Check other PCBs Check the connection of KEY PCB to MAIN PCB After ST-BY on Does LED turn on green light? ->...

  • Page 40: When Remote Controller Does Not Operate

    Main PCBs Trouble Diagnosis 7-1-4. When Remote Controller does not operate. Check Start 1. Check AC connection After turn on the power, 2. Check Power S/W ON does LED turn on red light? 3. Check other BLOCks Is Remote Controller working? Check the Battery of Remote Controller Does set working by pressing Check the connection between...
  • Page 41 Main PCBs Trouble Diagnosis Remote control signal (First pin of PA912) -41-...

  • Page 42: Power Pcb

    Main PCBs Trouble Diagnosis 7-2. POWER PCB Check Start 1.Check AC connection 2.Check Power S/W On 3.Check F801(F1) After turn on The power, Does LED turn on light? 4.Check C811(C23) 5.Check P802(CN4)5Vpin 6.Check the Connector 1.Check the Connector 2.Check input Voltage After Power on, Does Picture on? 3.Check P802(CN4)P/O 4.Check P802(CN4)12V...

  • Page 43: Trouble Diagnosis

    8. Trouble Diagnosis 8-1. 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 44: Typical Symptoms Of Pcb Problem Or Bad Connection

    Trouble Diagnosis 8-2. Typical Symptoms of PCBs problem or bad connection A. Symptom of initial latch up - Define initial latch up : When turn on the power, both LEDs light up red and TV is not working. - Repairing method : This is typical symptom when ROM(ICU3) is incorrectly connected at socket.

  • Page 45: Structure Of Lcd Set

    9. Structure of LCD Set COMPONENT PICTURE REMARK LCD PANET ALL CONNECTOR CONNECTION POWER BOARD MAIN BOARD -45-...
  • Page 46 Structure of LCD Set COMPONENT PICTURE REMARK FRONT MASK BACK COVER STAND -46-...

  • Page 47: Exploded View

    10. EXPLODED VIEW DLM-26C2 -47-...
  • Page 48 EXPLODED VIEW DLM-26C3 -48-...
  • Page 49 EXPLODED VIEW DLM-32C2 -49-...
  • Page 50 EXPLODED VIEW DLM-32C3 -50-...
  • Page 51 EXPLODED VIEW DLM-37C3 -51-...
  • Page 52 EXPLODED VIEW DLM-42C1 -52-...

  • Page 53: Part List

    11. Part List DLM-26C3 PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK ZZ100 48B5454D06 TRANSMITTER REMOCON R-54D06 (AAA) C638 CEXF1H471V C ELECTRO 50V RSS 470MF (13X20) TP ZZ110 PTACPWG151 ACCESSORY AS DLP-26C3AMBS C681 CEXF1E331V C ELECTRO 25V RSS 330MF (10X12.5)TP 4850Q01210 BATTERY...
  • Page 54 Part List PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK CC476 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 DC236 DBAV99ML-B DIODE CHIP BAV99ML CC477 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 DC238 DBAV99ML-B DIODE CHIP BAV99ML...
  • Page 55 Part List PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK C552 CEXF1C220A C ELECTRO 16V RSM 22MF (5X7) CC455 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 C555 CEXF1C220A C ELECTRO 16V RSM 22MF (5X7) CC456 HCBK104KBA C CHIP CERA...
  • Page 56 Part List PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK CC686 HCFF474ZBA C CHIP CERA Y5V 16V 0.47MF Z 1608 DC293 DBAV99ML-B DIODE CHIP BAV99ML CC701 HCQK200JBA C CHIP CERA 50V CH 20PF J 1608 DC401 DMMBD1204B DIODE CHIP MMBD1204...
  • Page 57 Part List PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK LC593 HFF300B01A F CHIP FERRITE BEAD 30 OHM UPB 1608 RC213 HRFT123JBA R CHIP 1/10 12K OHM J 1608 LC594 HFF300B01A F CHIP FERRITE BEAD 30 OHM UPB 1608 RC216 HRFT750JBA R CHIP...
  • Page 58 Part List PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK RC446 HRFT470JBA R CHIP 1/10 47 OHM J 1608 RC554 HRFT000-BA R CHIP 1/10 0 OHM 1608 RC447 HRFT470JBA R CHIP 1/10 47 OHM J 1608 RC555 HRFT000-BA R CHIP...
  • Page 59 Part List PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK RC718 HRFT101JBA R CHIP 1/10 100 OHM J 1608 RC789 HRFT000JBA R CHIP 1/10 0 OHM J 1608 RC719 HRFT101JBA R CHIP 1/10 100 OHM J 1608 RC790 HRFT152JBA R CHIP...
  • Page 60 Part List PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK I801 1FA5501AP- FA5501AP C826 CMXM2A224J C MYLAR 100V 0.22MF J I802 PTA3SW3100 HEAT SINK ASS`Y 1STRT2268- + 7128301252 C827 CEXF1H101C C ELECTRO 50V RUS 100MF (8X11.5) TP 00001 1STRT2268- IC POWER...
  • Page 61 Part List PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK RS803 RS01Z823J- R M-OXIDE FILM 1W 82K OHM J (TAPPING) R816 RN-4Z8203F R METAL FILM 1/4 820K OHM F ZZ200 PTPWJRG116 PCB POWER RADIAL AS DLP-32C2AMSB R817 RN-4Z7500F R METAL FILM...
  • Page 62 Part List DLM-26C2 LOC PART NAME PART DESCRIPTION DLM-26C3 DLM-26C2 LOC PART NAME PART DESCRIPTION DLM-26C3 DLM-26C2 A001 PCB UNION 122.5X51(330X246/2X4) D1B PTUNJAG117 P801A CORD POWER AS EU LP-33+LS-60=2.0M(LF) PTACPWG116 A001 PCB UNION 189X235.5 PTUNJ1G151 P801A CORD POWER AS EU LP-33+LS-60L=2.0M(LF)
  • Page 63 Part List DLM-32C1 DLM-32C2 LOC PART NAME PART DESCRIPTION DLM-26C3 DLM-32C1 LOC PART NAME PART DESCRIPTION DLM-26C3 DLM-32C2 M191A SCREW TAPPTITE TT2 WAS 3X10 MFZN BK 3CR PTCACAG155 A001 PCB UNION 122.5X51(330X246/2X4) D1B PTUNJAG117 M201 MASK FRONT HIPS BK PTFMSJG146 A001 PCB UNION 189X235.5...
  • Page 64 Part List DLM-32C3 LOC PART NAME PART DESCRIPTION DLM-26C3 DLM-32C2 LOC PART NAME PART DESCRIPTION DLM-26C3 DLM-32C3 M723B SCREW TAPPTITE TT2 BIN 3X10 MFZN BK 3CR PTCACAG151 M201 MASK FRONT HIPS BK PTFMSJG146 M723B SCREW TAPPTITE TT2 WAS 3X10 MFZN BK 3CR PTCACAG116 M201 MASK FRONT...
  • Page 65 Part List DLM-37C3 LOC PART NAME PART DESCRIPTION DLM-26C3 DLM-37C3 LOC PART NAME PART DESCRIPTION DLM-26C3 DLM-37C3 00001 DIODE BRIDGE GBJ606 PTA3SW2900 M385A SCREW TAPPTITE TT2 TRS 4X14 MFZN BK 3CR PTCACAG140 00001 DIODE FMX-22SL PTB2SW4508 M387 FRAME STAND ABS BK PTCACAG140 00001 DIODE...
  • Page 66 Part List DLM-42C1 LOC PART NAME PART DESCRIPTION DLM-26C3 DLM-42C1 LOC PART NAME PART DESCRIPTION DLM-26C3 DLM-42C1 00001 DIODE BRIDGE GBJ606 PTA3SW2900 M385A SCREW TAPPTITE TT2 TRS 4X14 MFZN BK 3CR PTCACAG141 00001 DIODE FMX-22SL PTB2SW4508 M386 FRAME HORIZONTAL SECC T=1.6 PTCACAG141 00001 DIODE...

  • Page 67: Circuit Diagram

    12. Circuit Diagram -67-...
  • Page 68 Circuit Diagram -68-...
  • Page 69 Circuit Diagram -69-...
  • Page 70 Circuit Diagram -70-...
  • Page 71 Circuit Diagram -71-...
  • Page 72 Circuit Diagram -72-...
  • Page 73 Circuit Diagram -73-...
  • Page 74 DAEWOO ELECTRONICS CORP. 686, AHYEON-DONG, MAPO-GU, SEOUL, KOREA. C.P.O. BOX 8003 SEOUL KOREA PRINTED DATE : OCT. 2006...

This manual is also suitable for:

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