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    THOSFCHAPMAN's Avatar
    THOSFCHAPMAN Posts: 3, Reputation: 1
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    #1

    Nov 19, 2007, 10:38 PM
    Keyboard test pin voltages
    I have checked the test pin voltages for my keyboard and they are as follows:

    pin 4 pin 1 -0.00
    pin 4 pin 2 -3.87
    pin 4 pin 3 -4.37
    pin 4 pin 5 -0.01
    pin 4 pin 6 -3.87

    Could anyone advise if these values are within limits and, if not, is it an indication of a problem with the system board?

    Thanking you.
    NeedKarma's Avatar
    NeedKarma Posts: 10,635, Reputation: 1706
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    #2

    Nov 20, 2007, 02:19 AM
    Considering that keyboards are about $10 I quite certain that people rarely go through the trouble to test the voltage outputs, especially in the old PS2 formats since most are USB now.
    But I did find this: IBM Support - Troubleshooting Mouse and keyboard issues (scroll down to the table)
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