Daewoo LA37L1B1LM Service Manual
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Daewoo LA37L1B1LM Service Manual

Daewoo LA37L1B1LM Service Manual

Chassis: sl-s00a/01a/10a
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Service Manual

LCD TV
CHASSIS :
Model :
LA32L1B1LM
LA37L1B1LM
LA42L1B1LM
LA42L1B1LF
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. : TSLS00AEF0
SL-S00A/01A/10A
Sep. 2008

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Summary of Contents for Daewoo LA37L1B1LM

  • Page 1: Service Manual

    Service Manual LCD TV CHASSIS : SL-S00A/01A/10A Model : LA32L1B1LM LA37L1B1LM LA42L1B1LM LA42L1B1LF 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

    7. Schematic ...........................26 8. Soft Upgrade Method......................42 9. Bill Of Materials ........................43 1) LA32L1B1LM Parts List ....................43 2) LA37L1B1LM Parts List ....................43 3) LA42L1B1LM Parts List ....................44 4) LA42L1B1LF Parts List....................44 5) Common Parts List......................45 10. Mechanical Exploded View .....................52 1) 32L1..........................52...

  • 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

    2. Preliminary Troubleshooting 1) LCD TV does not response or remote controller does not work. - Check the power cord to be plugged. - Check the battery of the remote controller. 2) Sound is discontinuous or broken sometimes. - Check if [SOUND] -> [AVC] is [ON]. - Set the sound effect into 'F Mono'? - Set the [SOUND] ->...

  • Page 5: Product Specification

    3. Product Specification 1) Standard of Product Owing to our policy of continuous improvement, specifications may change.

  • Page 6: Available Input Signal

    Product Specification 2) Available Input Signal i) TVMode Color Standard : NTCS, ATSC Ø Reception Channel : Ch 2~13 (VHF), Ch 14~69 (UHF), Ch 1, 14~125(Cable) Ø Sound Transmission System : FM Mono, 2 Carrier, Dolby Digital Ø IF &Subcarrier : Ø...

  • Page 7: Closed Caption Specification

    Product Specification 3) 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 4) 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 CH Map Save Recall Volume HEAT-RUN White Balance No Function Auto Calibration Misc Sound Processor Demodulator Hotel mode Factory Reset Test Pattern...

  • Page 10: Service Mode Data

    Service Remote Controller 2) Service Mode Data To enter SERVICE MODE, A. Press “<VOL” -> “MUTE” -> “DISPLAY” -> “MUTE” button of remote controller(R-55M15) B. Press “S9” button of SERVICE REMOTE CONTROLLER. -10-...

  • Page 11: Block Diagram

    5. Block Diagram 1) Block Diagram of Digital Board -11-...

  • Page 12: Power Tree

    Block Diagram 2) Power Tree -12-...

  • Page 13: Hardware Trouble Shooting

    6. Hardware Trouble shooting 1) No picture & No Sound - In case of All mode START Check The input power of Digital Check the SMPS and input voltage Board s P801 #14, 15pin 12V is correct IC401 problem. Is the LED is Blinking? Replace the Main PCB Perhaps Connector and Check the #15 pin Cable...

  • Page 14: No Picture - Analog & Component Mode

    Hardware Trouble shooting 2) No Picture - Analog & Component mode - In case of ATV, VIDEO, COMPONENT mode START Check The input power of Check the SMPS and input voltage IC401 is correct Perhaps Connector and Check the LVDS signal Check the LVDS signal Cable problem.
  • Page 15 Hardware Trouble shooting A. When “No signal” in RF, AV1, AV2 1) First check if other inputs are not working =>If other inputs are not working, replace MAIN PCB 2) Checking waveforms with Color Bar Pattern(Using the oscilloscope) -Main TP(RF) : CC220 near IC401(TOP) -Main TP(AV1) : CC210 near IC202(TOP) -Main TP(AV2) : CC212 near IC202(TOP) =>If all TP signal does not appear, replace MAIN PCB.
  • Page 16 Hardware Trouble shooting B. When “No signal” in Y/C signal (S-Video) 1) First check if other inputs are not working =>If other inputs are not working, replace MAIN PCB 2) Checking waveforms with Color Bar Pattern(Using the oscilloscope) -Main TP(S-Video_Y) : CC211 near IC202(TOP) -Main TP(S-Video_C) : RC216 near IC202(TOP) =>If all TP signal does not appear, replace MAIN PCB.
  • Page 17 Hardware Trouble shooting C. When “No signal” in Y/Pb/Pr signal (Component) 1) First check if other inputs are not working =>If other inputs are not working, replace MAIN PCB 2) Checking waveforms with Color Bar Pattern(Using the oscilloscope) -Main TP(COMP_Y) : RC238 near IC401(TOP) -Main TP(COMP_Pb) : RC237 near IC401(TOP) -Main TP(COMP_Pr) : RC239 near IC401(TOP) =>...
  • Page 18 Hardware Trouble shooting Pr signal(RC239) -18-...

  • Page 19: No Picture-Digital Tv Mode

    Hardware Trouble shooting 3) No Picture-Digital TV mode START Check the Select Air/Cable in Ant. Set correctly Ant set is correct in Menu Perhaps Connector and Check the Check Cable problem. The LVDS connector LVDS signal output of Replace connector or cable. And cable is Correct IC101 is correct IC101 problem.

  • Page 20: No Picture- Pc & Hdmi Mode

    Hardware Trouble shooting 4) No Picture- PC & HDMI mode START Check PC/HDMI resolution to Check the input resolution of external device Available resolution in LCD TV Check Check the SMPS and input voltage The input power of IC401 is correct Perhaps Connector and Check Check the LVDS signal...
  • Page 21 Hardware Trouble shooting A. When “No signal” in PC 1) First check if other inputs are not working =>If other inputs are not working, replace MAIN PCB 2) Checking waveforms with Color Bar Pattern(Using the oscilloscope) -Main TP(R signal) : RC239 near IC401(TOP) -Main TP(G signal) : RC238 near IC202(TOP) -Main TP(B signal) : RC237 near IC401(TOP) -Main TP(H-Sync) : RC207 near JK203(TOP)
  • Page 22 Hardware Trouble shooting B signal(RC237) H-Sync(RC207) -22-...
  • Page 23 Hardware Trouble shooting V-Sync(RC206) B. When “No signal” in HDMI 1) First check if other inputs are not working =>If other inputs are not working, replace MAIN PCB 2) Checking waveforms with Color Bar Pattern(Using the oscilloscope) -Main TP(HDMI1_Clock) : PIN35 near IC201(TOP) =>If all TP signal does not appear, replace MAIN PCB.

  • Page 24: No Sound

    Hardware Trouble shooting 5) No Sound -24-...

  • Page 25: Lcd Panel Backlight Inverter Check

    Hardware Trouble shooting 6) LCD PANEL BACKLIGHT INVERTER CHECK * Pin 14 is Status Output of Backlight Inverter. Status Output of Pin 14 Normal 3.0V to 5.0V Abnormal 0V to 0.7V -25-...

  • Page 26: Schematic

    7. Schematic -26-...
  • Page 27 Schematic -27-...
  • Page 28 Schematic -28-...
  • Page 29 Schematic -29-...
  • Page 30 Schematic -30-...
  • Page 31 Schematic -31-...
  • Page 32 Schematic -32-...
  • Page 33 Schematic -33-...
  • Page 34 Schematic -34-...
  • Page 35 Schematic -35-...
  • Page 36 Schematic -36-...
  • Page 37 Schematic -37-...
  • Page 38 Schematic -38-...
  • Page 39 Schematic -39-...
  • Page 40 Schematic -40-...
  • Page 41 Schematic -41-...

  • Page 42: Soft Upgrade Method

    8. Software Upgrade Methord 1. This model requires ‘dtv150_main.bin’ binary file and USB memory for upgrade. 2. The upgrade file must be named dtv150_main.bin, and located in root directory in USB memory. 3. Press S9 button in service remote controller, and check the decoder version. 4.

  • Page 43: Bill Of Materials

    ZZ100 48B6360A04 TRANSMITTER REMOCON R-60A04 (AAA) ZZ100 48B6360A04 TRANSMITTER REMOCON R-60A04 (AAA) ZZ110 PTACPWG469 ACCESSORY AS LA32L1B1LM ZZ110 PTACPWG470 ACCESSORY AS LA37L1B1LM 4850Q00910 BATTERY R03/NN 4850Q00910 BATTERY R03/NN Ma211C 7172401652 SCREW TAPPTITE TT2 TRS 4X16 MFZN BK 3CR M212 4852182801...

  • Page 44: La42L1B1Lm Parts List

    Bill of Materials 3) 42L1 4) 42L1FULL HD LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTION PARTS CODE PARTS NAME PARTS DESCRIPTION ZZ100 48B6360A04 TRANSMITTER REMOCON R-60A04 (AAA) ZZ100 48B6360A04 TRANSMITTER REMOCON R-60A04 (AAA) ZZ110 PTACPWG471 ACCESSORY AS LA42L1B1LM ZZ110...

  • Page 45: Common Parts List

    Bill of Materials 5) COMMON PARTS LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTION PARTS CODE PARTS NAME PARTS DESCRIPTION CC310 HCFK104ZBA C CHIP CERA 50V Y5V 0.1MF Z 1608 JK201 4859118050 JACK PIN DPSE-9926S CC311 HCQK331JBA C CHIP CERA 50V CH 330PF J 1608...
  • Page 46 Bill of Materials LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTION CC708 HCFK104ZBA C CHIP CERA 50V Y5V 0.1MF Z 1608 RC535 HRFT103JBA R CHIP 1/10 10K OHM J 1608 CC810 HCBK103KBA C CHIP CERA 50V X7R 0.01MF K 1608 RC539 HRFT101JBA R CHIP...
  • Page 47 Bill of Materials LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTION CC126 HCQK330JBA C CHIP CERA 50V CH 33PF J 1608 CC336 HCFK104ZBA C CHIP CERA 50V Y5V 0.1MF Z 1608 CC127 HCQK330JBA C CHIP CERA 50V CH 33PF J 1608 CC401 HCFK104ZBA...
  • Page 48 Bill of Materials LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTION CC807 HCFK104ZBA C CHIP CERA 50V Y5V 0.1MF Z 1608 CE805 HCEJC101MC C CHIP ELECTRO 6.3V 100MF LV 5055 CC808 HCBK102KBA C CHIP CERA 50V X7R 1000PF K 1608 CE806 HCEJC101MC C CHIP ELECTRO...
  • Page 49 Bill of Materials LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTION LC230 HFF221B00A F CHIP FERRITE BEAD 220 OHM GBK 1608 RC118 HRFT472JBA R CHIP 1/10 4.7K OHM J 1608 LC231 HFF221B00A F CHIP FERRITE BEAD 220 OHM GBK 1608 RC119 HRFT472JBA...
  • Page 50 Bill of Materials LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTION RC289 HRFT000JBA R CHIP 1/10 0 OHM J 1608 RC436 HRFT103JBA R CHIP 1/10 10K OHM J 1608 RC290 HRFT000JBA R CHIP 1/10 0 OHM J 1608 RC437 HRFT103JBA R CHIP...
  • Page 51 Bill of Materials LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTION RC623 HRFT221JBA R CHIP 1/10 220 OHM J 1608 VA412 D18S03015- VARISTOR CHIP AVLC18S03015 RC624 HRFT221JBA R CHIP 1/10 220 OHM J 1608 IR901 1R24FC6B— IC PREAMP R24FC6B RC627...

  • Page 52: Mechanical Exploded View

    10. Mechanical Exploded View 1) LA32L1B1LM -52-...

  • Page 53: 37L1

    Mechanical Exploded View 2) LA37L1B1LM -53-...

  • Page 54: 42L1

    Mechanical Exploded View 3) LA42L1B1LM / LA42L1B1LF -54-...
  • Page 55 DAEWOO ELECTRONICS CORP. 686, AHYEON-DONG, MAPO-GU, SEOUL, KOREA. C.P.O. BOX 8003 SEOUL KOREA PRINTED DATE : Dec. 2006...

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La32l1b1lmLa42l1b1lmLa42l1b1lf

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