I have got a system HP9100B with following peripherals:HP 9101A Extended Memory, HP9102A Buffer, HP9125A Plotter , HP11162A Cable and the manuals about them.
Unfortunately the rubber wheel on the card reader is out of order (totally crumbled) .
I search how the card reader is working: is the card inserted manually and when down is pushed up by the wheel without other command? I haven't any card.
I want to know the exact diameter of the rubber wheel normally 20-22 millimeters.
Many thanks for help. Marcel
HP9100B Card reader
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