Hi Pedro,
Are you saying that while you are trying to use the adiscf utility, some of the function keys are not working properly in that utility? If so, please try this as a workaround:
For each function key that you need to press, instead press the forward slash "/" key, followed by the number key. So, for example, if you need to press F3, instead press and release "/", and then press and release "3". Does this help?