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akira DM-300P Service Manual

Portable disc player
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Portable Disc Player
Service Manual

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Summary of Contents for akira DM-300P

  • Page 1 Portable Disc Player Service Manual...
  • Page 2 MODEL: DM-300P Model No.: DM-300P Version: 1.0...
  • Page 3 CONTENTS MAIN BOARD CIRCUIT DIAGRAM & FUNCTION EXPLANATION ........4 TROUBLE SHOOTING........................5 EASY DAMAGED COMPONENT & BADNESS PHENOMENON LIST........8 CIRCUIT DIAGRAM........................9 Model No.: DM-300P Version: 1.0...

  • Page 4: Main Board Circuit Diagram & Function Explanation

    Power Processor Circuit 8 ROOM (2M MPEG (SPCA716A) : SDRAM FLASH): MPEG-1 Decoder (SDRAM4*16M-80): Storage Dynamic Storage AUDIO (WM8714+DF2308): 5 VIDEO Audio processor (A/D (SPCA717A): Video Transfer+ Amplify) processor AUDIO OUT VIDEO OUT Model No.: DM-300P Version: 1.0...

  • Page 5: Trouble Shooting

    Check battery chip Clean the smutch or change battery chip Check power Change power socket Batteries can’t play socket Check the capacitance of Change capacitance C30C35 on main board Check Q3 on main Change dynatron board Model No.: DM-300P Version: 1.0...
  • Page 6 Check Q6。 Change Q6。 Reinstall or change ROM Check ROM。 Clean the touching point Check the panel Please ask the technician for help Please send back 2~3pcs defective sample for our analysis. Model No.: DM-300P Version: 1.0...
  • Page 7 Cause analysis and Correction method: when reading disc 1) Improper Disc：Serious-Scratched disk or the format of Disc is out of MPEG-1Standard. 2) There are dusts on Pick up lens: please clean the lens with professional cleaning disc. Model No.: DM-300P Version: 1.0...

  • Page 8: Easy Damaged Component & Badness Phenomenon List

    Touching between ROOM (2M FLASH) and No feekback when turn on the unit. socket Earphone socket No sound or single sound or interrupted sound. Connecting housing of control board No feednack or no display when turn on the unit. Model No.: DM-300P Version: 1.0...

  • Page 9: Circuit Diagram

    CIRCUIT DIAGRAM Model No.: DM-300P Version: 1.0...
  • Page 10 Model No.: DM-300P Version: 1.0...
  • Page 11 Model No.: DM-300P Version: 1.0...