Hardware failure refers to the act of a piece of physical hardware failing to meet its designed standards during operation.

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HP Laserjet 4l paper jam - probably electronics behind phototransistor defect - how to check?

I have a problem with our old HP Laserjet 4L. The paper jam indicator flashes after the printer fed the 2nd sheet of paper a few centimetres into the machine. The first page after powering on the ...