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820-2533-B Hd not detected*

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  • 820-2533-B Hd not detected*

    Hi,
    Unit works with usb external HD. Tried good know hd cable and HD. Not booting unlimited spinning with good known HD.
    The measurement of J4501 are as following:
    SMBUS_SMC_MGMT_SCL p7=3v
    PP5V_S0_HDD_FLT p9,11=5v
    PP1V5_S0_HDD_FLT, p8=5v
    PP5V_S0_HDD_FLT,p10,12=5v
    Any help please.Thanks.

  • #2
    "PP1V5_S0_HDD_FLT, p8=5v"
    Are you sure???
    It comes from PP1V5_S0; is L4502 OK?

    Check FL4501/02 and C4510/11/15/16.
    Also check all traces from that area.

    Comment


    • #3
      I found the cable was faulty. It works fine now. Thank.

      Comment

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