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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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