LG LH-D6230A Service Manual
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LG LH-D6230A Service Manual

Dvd/cd receiver
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DVD/CD RECEIVER
SERVICE MANUAL
MODEL: LH-D6230A/D
LHS-D6230T, LHS-D6230W

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Summary of Contents for LG LH-D6230A

  • Page 1 DVD/CD RECEIVER SERVICE MANUAL MODEL: LH-D6230A/D LHS-D6230T, LHS-D6230W...

  • Page 2: Table Of Contents

    CONTENTS SECTION 1. GENERAL • SERVICING PRECAUTIONS ....................... 1-2 • ESD PRECAUTIONS ........................1-4 • SPECIFICATIONS ........................1-5 • LOCATION OF CUSTOMER CONTROLS ................... 1-6 SECTION 2. AUDIO PART • BLOCK DIAGRAM ........................2-1 • SCHEMATIC DIAGRAMS ......................2-3 • WIRING DIAGRAM ........................2-9 •...

  • Page 3: Section 1. General

    SECTION 1. GENERAL PART ❏ SERVICING PRECAUTIONS NOTES REGARDING HANDLING OF THE PICK-UP 1. Notes for transport and storage 1) The pick-up should always be left in its conductive bag until immediately prior to use. 2) The pick-up should never be subjected to external pressure or impact. Storage in conductive bag Drop impact 2.
  • Page 4 NOTES REGARDING COMPACT DISC PLAYER REPAIRS 1. Preparations 1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components can be damaged, and for that reason components should be handled with care.

  • Page 5: Esd Precautions

    ❏ ESD PRECAUTIONS Electrostatically Sensitive Devices (ESD) Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated circuits and some field-effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity.

  • Page 6: Specifications

    ❏ SPECIFICATIONS - 1-5 -...

  • Page 7: Location Of Customer Controls

    ❏ LOCATION OF CUSTOMER CONTROLS FRONT PANEL DISPLAY WINDOW - 1-6 -...
  • Page 8 REAR PANEL - 1-7 -...
  • Page 9 MEMO - 1-8 -...

  • Page 10: Section 2. Audio Part

    SECTION 2. AUDIO PART ❏ BLOCK DIAGRAM...

  • Page 11: Schematic Diagrams

    ❏ SHEMATIC DIAGRAMS • MAIN SCHEMATIC DIAGRAM...
  • Page 12 • FRONT SCHEMATIC DIAGRAM...
  • Page 13 • POWER SCHEMATIC DIAGRAM NOTE: Warning NOTE: Parts that are shaded are critical With respect 1. Shaded(I) parts are critical for safety.Replace only to risk of fire or electrical shock. with specified part number. 2. Voltages are DC-measured with a digital voltmefer during Play mode.

  • Page 14: Wiring Diagram

    ❏ WIRING DIAGRAM NOTE: Warning Parts that are shaded are critical With respect to risk of fire or electrical shock. 2-10...

  • Page 15: Voltage Sheet (Ic&Tr)

    ❏ VOLTAGE SHEET (IC&TR) LOC. PART PIN NUM. STOP DVD PLAY LOC. PART PIN NUM. STOP DVD PLAY LOC. PART PIN NUM. STOP DVD PLAY -15.1 -15.2 IC500 KIA7808 11.9 11.9 IC650 LC8767XX -26.7 -26.7 -26.7 IC501 KIA7812 18.4 18.4 4.54 4.54 -17.7...
  • Page 16 LOC. PART PIN NUM. STOP DVD PLAY LOC. PART PIN NUM. STOP DVD PLAY -4.5 -4.5 IC400 TDA7265 -18.7 -18.7 18.6 18.6 -18.6 -18.6 IC450 KIA4558 IC601 M60446AFP -5.3 -5.3 IC200 TDA7265 -18.7 -18.7 18.6 18.6 -18.6 -18.6 IC250 TDA7265 -18.7 -18.7 18.6...

  • Page 17: Printed Circuit Diargams

    ❏ PRINTED CIRCUIT DIAGRAMS • MAIN/POWER/JACK P.C BOARD (SOLDER SIDE) 2-15 2-16...
  • Page 18 • MAIN/POWER/JACK P.C BOARD (COMPONENT SIDE) 2-17 2-18...
  • Page 19 • FRONT P.C. BOARD (SOLDER SIDE) • FRONT P.C. BOARD (COMPONENT SIDE) 2-19 2-20...

  • Page 20: Electrical Troubleshooting Guide

    SECTION 3. ELECTRICAL TROUBLESHOOTING GUIDE 1. System check flow - 3-1 -...
  • Page 21 2. Power check flow - 3-2 -...
  • Page 22 3. Test & debug flow - 3-3 -...
  • Page 23 - 3-4 -...
  • Page 24 - 3-5 -...
  • Page 25 - 3-6 -...
  • Page 26 - 3-7 -...
  • Page 27 - 3-8 -...

  • Page 28: 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) MT1379 main clock is at 27MHz(X501) 2) MT1336 reset is high active - 3-9 -...
  • Page 29 3) RS232 waveform during procedure(Downloading) 4) Flash R/W enable signal during download(Downloading) - 3-10 -...
  • Page 30 2. SDRAM CLOCK 1) MT1379 main clock is at 27MHz(X501) 3. TRAY OPEN/CLOSE SIGNAL 1) Tray open/close waveform - 3-11 -...
  • Page 31 2) Tray close waveform 3) Tray open waveform - 3-12 -...
  • Page 32 4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION) 5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION) - 3-13 -...
  • Page 33 6. LASER POWER CONTROL RELATED SIGNAL (NO DISC CONDITION) 7. DISC TYPE JUDGEMENT WAVEFORM - 3-14 -...
  • Page 34 - 3-15 -...
  • Page 35 8. FOCUS ON WAVEFORM - 3-16 -...
  • Page 36 9. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION) - 3-17 -...
  • Page 37 10. TRACKING CONTROL RELATED SIGNAL(System checking) - 3-18 -...
  • Page 38 11. RF WAVEFORM 12. MT1379 AUDIO OPTICAL AND COAXIAL OUTPUT (ASPDIF) - 3-19 -...
  • Page 39 13. MT1379 VIDEO OUTPUT WAVEFORM 1) Full colorbar signal(CVBS) 2) Y - 3-20 -...
  • Page 40 3) C 14. AUDIO OUTPUT FORM AUDIO DAC 1) Audio related Signal - 3-21 -...
  • Page 41 MEMO - 3-22 -...

  • Page 42: Dvd Part Schematic Diagrams

    ❏ DVD PART SCHEMATIC DIAGRAMS • MPEG SCHEMATIC DIAGRAM 3-23 3-24...
  • Page 43 • SERVO SCHEMATIC DIAGRAM 3-25 3-26...
  • Page 44 • AUDIO SCHEMATIC DIAGRAM 3-27 3-28...
  • Page 45 • INTERFACE SCHEMATIC DIAGRAM 3-29 3-30...

  • Page 46: Voltage Sheet (Ic&Tr)

    ❏ VOLTAGE SHEET (IC&TR) 3-31 3-32...

  • Page 47: Printed Circuit Diagram

    ❏ PRINTED CIRCUIT DIAGRAM • DVD P.C. BOARD(SOLDER SIDE) 3-33 3-34...
  • Page 48 • DVD P.C. BOARD (COMPONENT SIDE) 3-35 3-36...

  • Page 49: Section 4. Exploded Views

    SECTION 4. EXPLODED VIEWS • CABINET AND MAIN FRAME SECTION NOTE) Refer to “SECTION 6 REPLACEMENT PARTS LIST” in order to look for the part number of each part.
  • Page 50 • Deck Mechanism Exploded View...
  • Page 51 MEMO MEMO...

  • Page 52: Section 5. Speaker Part

    SECTION 5. SPEAKER PART ❏ MODEL: LHS-D6230T A800 - 5-1 -...
  • Page 53 SECTION 5. SPEAKER PART ❏ MODEL: LHS-D6230W - 5-2 -...

This manual is also suitable for:

Lh-d6230dLhs-d6230tLhs-d6230w

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