POST clk LED question ?

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  • bianchi77
    Badcaps Legend
    • Jun 2016
    • 1121
    • Australia
    #1

    POST clk LED question ?

    Guys,

    Can I see 33MHz from clk LED pin on POST diagnostic board connected on PCI ?
    Or the value is something else beside 33MHz...
    How can I know if there's clock on my motherboard ?
    It says on the manual it must be on...
    but sometimes I saw it's off and motherboard is running properly...
    and in different POST it's blinking and motherboard is running ok...

    I saw one, it's not completely on or off.....and the motherboard is not doing anything...so isn't there clock generated from clock generator ?
    I've checked the crystal of clock generator, it's ok, but I'm not sure if the chip is doing the job....and I can't see which pin is outputing the clock for CPU/PCI...since there's no datasheet for that chip...

    Any clues ?
    Cheers...
    Last edited by bianchi77; 09-12-2016, 09:07 PM.
    Tags: None
    • bianchi77
      Badcaps Legend
      • Jun 2016
      • 1121
      • Australia
      #2
      Re: POST clk LED question ?

      Probably, I can test from pin B2 and B16 with scope ?
      http://pinouts.ru/Slots/PCI_pinout.shtml

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