Fujitsu nh532 wont start unless cmos battery removed

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  • Bisketti
    Badcaps Veteran
    • Oct 2013
    • 252
    • Ireland
    #1

    Fujitsu nh532 wont start unless cmos battery removed

    Hi any help is appreciated. I have tried a few different bios files. The power buttons works fine. Only if bios battery is removed it will boot up and can be switched off with power button but will not switch on again via button.

    I cannot find a schematic or boardview.

    on KBC
    ac_present is 0v
    Pm_pwrbtn 3v
    PM_RSMRST 3v
    ec_rst 3v
    ac_in_oc 3v
    vsuson 3v
    Tags: None
    • ktmmotocross
      Boardkiller
      • Feb 2014
      • 3577
      • slovakia
      #2
      Re: Fujitsu nh532 wint start unless cmos battery removed

      is battery ok? voltage more than 2.5V

        Comment

        • Bisketti
          Badcaps Veteran
          • Oct 2013
          • 252
          • Ireland
          #3
          Re: Fujitsu nh532 wint start unless cmos battery removed

          yeah tried with new battery same. Im trying to find out why ac_present is 0v from kbc with or without cmos battery.

            Comment

            • ktmmotocross
              Boardkiller
              • Feb 2014
              • 3577
              • slovakia
              #4
              Re: Fujitsu nh532 wint start unless cmos battery removed

              i think ac_present is driven by ACOK from ic like BQ

                Comment

                • Bisketti
                  Badcaps Veteran
                  • Oct 2013
                  • 252
                  • Ireland
                  #5
                  Re: Fujitsu nh532 wint start unless cmos battery removed

                  Thanks for your help but had to return unit to customer.

                    Comment

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