LG DKE573XB Service Manual
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LG DKE573XB Service Manual

Lg dke573xb; dke574xb; dke575xb dvd video player
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See also: Owner's Manual
DVD VIDEO PLAYER
SERVICE MANUAL
MODELS : DKE573XB/DKE574XB/DKE575XB
(DE9353CEM/DE9453CEM/DE9553CEM)
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS"
IN THIS MANUAL.
Printed in Korea
DKE573XB(DE9353CEM) DKE574XB(DE9453CEM) DKE575XB(DE9553CEM)
P/NO : 3829RHP037Z
JANUARY, 2005

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Summary of Contents for LG DKE573XB

  • Page 1 DVD VIDEO PLAYER SERVICE MANUAL MODELS : DKE573XB/DKE574XB/DKE575XB (DE9353CEM/DE9453CEM/DE9553CEM) CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. Printed in Korea DKE573XB(DE9353CEM) DKE574XB(DE9453CEM) DKE575XB(DE9553CEM) P/NO : 3829RHP037Z JANUARY, 2005...
  • Page 2 CONTENTS SECTION 1 ..SUMMARY SECTION 2 ..CABINET & MAIN CHASSIS SECTION 3 ..ELECTRICAL SECTION 4 ..REPLACEMENT PARTS LIST...

  • Page 3: Table Of Contents

    SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS ......1-3 SERVICING PRECAUTIONS ....................1-4 • General Servicing Precautions • Insulation Checking Prodedure • Electrostatically Sensitive Devices SPECIFICATIONS ........................1-5...

  • Page 4: Product Safety Servicing Guidelines For Video Products

    PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY, SUBJECT : X-RADIATION NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFAC- 1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PER- TURER’S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY SONNEL COVER THE SUBJECT OF X-RADIATION.

  • Page 5: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION : Before servicing the DVD covered by this service Electrostatically Sensitive (ES) Devices data and its supplements and addends, read and follow the Some semiconductor (solid state) devices can be damaged SAFETY PRECAUTIONS. NOTE : if unforeseen circum- easily by static electricity.

  • Page 6: Specifications

    SPECIFICATIONS • GENERAL Power requirements: AC 110-240 V , 50/60 Hz Power consumption: Dimensions (Approx.): 430 x 35 x 242 mm (W x H x D) without foot Weight (Approx.): 1.7 kg Operating temperature: 5 °C to 35 °C (41 °F to 95 °F) Operating humidity: 5 % to 90 % •...
  • Page 7 SECTION 2 CABINET & MAIN CHASSIS CONTENTS EXPLODED VIEWS ........................2-2 1. Cabinet and Main Frame Section ...................2-2 2. Deck Mechanism Section(DP-9) .....................2-3 3. Packing Accessory Section ....................2-4...

  • Page 8: Exploded Views

    EXPLODED VIEWS 1. Cabinet and Main Frame Section KARAOKE MODEL ONLY KARAOKE MODEL ONLY...

  • Page 9: Deck Mechanism Section(Dp-9)

    2. Deck Mechanism Section(DP-9) 015B 015A 012A 012A 035A...

  • Page 10: Packing Accessory Section

    3. Packing Accessory Section RF CABLE 810 CABLE SET ASS’Y PLUG ASS’Y 1WAY(YELLOW) PLUG ASS’Y 2WAY BATTERY PLUG ASS’Y 1WAY(BLACK) REMOCON OWNER’S MANUAL PACKING SHEET PACKING PACKING BOX CARTON OPTIONAL PARTS...
  • Page 11 SECTION 3 ELECTRICAL CONTENTS ELECTRICAL TROUBLESHOOTING GUIDE ..............3-2 1. Power check flow........................3-2 2. System operation flow ......................3-3 3. Test & debug flow ........................3-4 4. KARAOKE Flow (KARAOKE MODEL ONLY) ...............3-10 DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING ....3-11 1. SYSTEM 27MHz CLOCK, RESET, FLASH R/W SIGNAL.............3-11 2.

  • Page 12: Electrical Troubleshooting Guide

    ELECTRICAL TROUBLESHOOTING GUIDE 1. Power check flow No 3.3VA No REG 5.0V Is the FR101 Replace the FR101 Is the Vcc(=5.6V) sup- Check or Replace Normal? (Use the same ICW) plied to Q126 Collector? the D123 Is the D105/ D106/ Replace the D105/ Is the Vcc(=12V) sup- Check the ‘PWR CTL...

  • Page 13: System Operation Flow

    2. System operation flow Power On 1. 8032 initializes SERVO,DSP & RISC registers 2. Write RISC code to SDRAM 3. Reset RISC Show LOGO Tray Closed ? Tray Close to Closed position SLED at Inner Side ? SLED Moves to Inner Position 1.

  • Page 14: Test & Debug Flow

    3. Test & debug flow TEST Check the AC Voltage Replace power PCBA or AC transformer. Power PCBA(110V or 220V) Switch on the Power PCBA Is the DC Voltage outputs OK? Repair or Replace Power PCBA (5V, 3.3V, 12V,5.6V MOTOR) Make sure the main PCBA don't short on VCCs and switch it on.
  • Page 15 Check connection lines between Flash Memory operates Show LOGO? FLASH & MT1389C and the FLASH properly? access time whether is suitable or not. Check connection lines SDRAM works properly? between SDRAM & MT1389C and the SDRAM is damaged. MT1389C VIDEO outputs Check the related circuit of properly? MT1389C.
  • Page 16 Does the SLED move to Motor Driver STBY Pin is Check the connection line of inner side when it is at outter High? STBY signal. position? Is FMSO DC Level higher Check the related circuit of than 1.4V? FMSO. SL+ and SL- output Check the amp circuit on properly? motor driver.
  • Page 17 Check the laser power circuit Laser turns on when LD01 or LD02 output on MT1389C and connecting reading disc? properly? to power transistor. Collector voltage of Check the related circuit on power transistor is OK? laser power transistor Check cable connection between transistor ouput and pick-up head.
  • Page 18 Proper signals on A, B, C, Check connections between Focus ON OK? D of MT1389C MT1389C and pick-up head. Check the FOSO Check FEO signal on connection on MT1389C MT1389C and motor driver. Check FOSO signal on MT1389C Normal TEO Signal on Check the related Track On OK? MT1389C?
  • Page 19 Normal Audio output Audio DAC received Check connection between when disc playback? correct data stream? MT1389C & Audio DAC. Check the related circuit of Normal Audio DAC out? Audio DAC. Check Audio filter,amplify,mute circuit. Communications between Normal IR.VFD & Front Check communication lines IR.VFD Front pannel key &...

  • Page 20: Karaoke Flow (Karaoke Model Only)

    4. KARAOKE Flow (KARAOKE MODEL ONLY) Start Insert the Mic jack Is the Mic signal at the IC801 pin3. Is the Mic signal at the IC801 Pin 2. Is the Digital Replace IC801. signal output at the Replace the IC508. IC508 Pin1.

  • Page 21: Details And Waveforms On System Test And Debugging

    DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 1. SYSTEM 27MHz CLOCK,RESET,FLASH R/W SIGNAL. 1) MT1389C main clock is at 27MHz(X501) 1.0V, 27MHz FIG 1-1 2) MT1389 reset is low active. 3.3VA PWR_CTL RESET Reset Time FIG 1-2 3-11...
  • Page 22 3) RS232 waveform during procedure(Downloading) FIG 1-3 4) Flash R/W enable signal during download(Downloading) FIG 1-4 3-12...

  • Page 23: Sdram Clock

    2. SDRAM CLOCK DCLK = 128MHz, Vp-p=2.2, Vmax=2.7V FIG 2-1 3. TRAY OPEN/CLOSE SIGNAL TRIN TROUT TRCLOSE TROPEN FIG 3-1 3-13...

  • Page 24: Sled Control Related Signal(No Disc Condition)

    4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION) FMSO(1.9V/1.4V/1.1V) STBY(3.3V) SL+(4.2V/2.8V/1.2V) SL-(4.2V/2.8V/1.5V) FIG 4-1 5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION) FOSO(1.5V/1.4V/1.3V) F+(3.2V/2.7V/2.2V) F-(3.2V/2.7V/2.2V) FIG 5-1 3-14...

  • Page 25: Laser Power Control Related Signal(No Disc Condition)

    6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION) DCLK = 128MHz, Vp-p=2.2, Vmax=2.7V MDI1(0V/180mV) LD01(3.3V//2.3V) LD02(3.3V/2.3V) FIG 7-2 (DVD) 7. DISC TYPE JUDGEMENT WAVEFORM FIG 7-1 3-15...
  • Page 26 FIG 7-2 (DVD) FIG 7-3 (CD) 3-16...

  • Page 27: Focus On Waveform

    FIG 7-4 (CD) 8. FOCUS ON WAVEFORM FOSO FIG 8-1 (DVD) 3-17...

  • Page 28: Spindle Control Waveform

    FOSO FIG 8-2 (CD) 9) SPINDLE CONTROL WAVEFORM (NO DISC CONDITION) DMSO(1.4V/1.8V) SP-(3.6V/2.4V) SP+(3.6V/4.8V) FIG 9-1 3-18...

  • Page 29: Tracking Control Related Signal(System Checking)

    10. TRACKING CONTROL RELATED SIGNAL(System checking) TRSO FIG 10-1 (DVD) TRSO FIG 10-2 (CD) 3-19...

  • Page 30: Mt1389 Audio Optical And Coaxial Output (Spdif)

    11. MT1389C AUDIO OPTICAL AND COAXIAL OUTPUT (SPDIF) FIG 12-1 13. MT1389C VIDEO OUTPUT WAVEFORM 1) 100% TRSO FIG 13-1 3-20...

  • Page 31: Mt1389 Audio Output To Audio Dac

    2) COMPOSITE VIDEO SIGNAL FIG 13-2 14. MT1389C AUDIO OUTPUT TO AUDIO DAC ASDATA3 FIG 14-1 3-21...

  • Page 32: Audio Output From Audio Dac

    15. AUDIO OUTPUT FROM AUDIO DAC FIG 15-1 3-22...

  • Page 33: Block Diagrams

    BLOCK DIAGRAMS 1. Overall Block Diagram CVBS RESET 3-23...

  • Page 34: Power(Smps) Block Diagram

    2. Power(SMPS) Block Diagram TRANS SWITCHING IC AC100~240V π FILTER RECTIFIER 3-24...

  • Page 35: Servo Block Diagram

    3. SERVO Block Diagram 3-25...

  • Page 36: Mpeg & Memory Block Diagram

    4. MPEG & MEMORY Block Diagram 3-26...

  • Page 37: Video & Audio Block Diagram

    5. VIDEO & AUDIO Block Diagram 3-27...

  • Page 38: Karaoke Block Diagram(Karaoke Model Only)

    6. KARAOKE Block Diagram(KARAOKE MODEL ONLY) Microphone AUDIO AUDIO Signal MPEG Microphone1 PREAMP (KA741) (MT1389C) (CS5331) (CS4344) (BA3308) (Block Digram) 1 The unit turns to KARAOKE MODE with ou-screen lyrics display and melody sound when it play backs VCD or DVD KARAOKE DISC. 2.

  • Page 39: Circuit Diagrams

    2. Voltages are DC-measured with a digital voltmeter MODIFIED OR ALTERED WITHOUT PERMISSION IMPLEMENTATION OF THE LATEST SAFETY AND during Play mode. FROM THE LG ELECTRONICS CORPORATION. ALL PERFORMANCE IMPROVEMENT CHANGES INTO COMPONENTS SHOULD BE REPLACED ONLY WITH THE SET IS NOT DELAYED UNTIL THE NEW SERVICE TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR- LITERATURE IS PRINTED.

  • Page 40: Av/Jack Circuit Diagram

    2. AV/JACK CIRCUIT DIAGRAM 3-31 3-32...

  • Page 41: System Circuit Diagram

    3. SYSTEM CIRCUIT DIAGRAM 3-33 3-34...

  • Page 42: Driver Circuit Diagram

    4. DRIVER CIRCUIT DIAGRAM CD/DVD LD will not on 3-35 3-36...

  • Page 43: Timer Circuit Diagram

    5. TIMER CIRCUIT DIAGRAM 3-37 3-38...

  • Page 44: 1Ch(Optional Part) & Karaoke(Karaoke Model Only) Circuit Diagram

    6. 5.1CH(OPTIONAL PART) & KARAOKE(KARAOKE MODEL ONLY) CIRCUIT DIAGRAM 3-39 3-40...

  • Page 45: Scart Circuit Diagram

    7. SCART CIRCUIT DIAGRAM 3-41 3-42...

  • Page 46: Circuit Voltage Chart

    • CIRCUIT VOLTAGE CHART MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY PIN NO. PIN NO. PIN NO. PIN NO.

  • Page 47: Printed Circuit Diagrams

    PRINTED CIRCUIT DIAGRAMS 1. MAIN P.C.BOARD LOCATION GUIDE 3-45 3-46...

  • Page 48: Key P.c.board

    2. KEY P.C.BOARD 3. TIMER P.C.BOARD ( 3 TOOL ONLY ) ( 3 TOOL ONLY ) ( TOP VIEW ) (BOTTOM VIEW ) (Solder Side) (Solder Side) (Solder Side) ( 4 TOOL ONLY ) ( 4 TOOL ONLY ) ( TOP VIEW ) (BOTTOM VIEW ) (Solder Side) (Solder Side)

  • Page 49: Smps P.c.board

    4. SMPS P.C.BOARD 6. KARAOKE P.C.BOARD ( 3 TOOL ONLY ) LOCATION GUIDE LOCATION GUIDE (Solder Side) ( 4 TOOL ONLY ) LOCATION GUIDE 5. 5.1CH & VGA P.C.BOARD(OPTIONAL PART) LOCATION GUIDE ( 5 TOOL ONLY ) LOCATION GUIDE 3-49 3-50...

This manual is also suitable for:

Dke574xbDke575xbDvx-9900

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