Technique for embodying self-diagnosis in a facsimile machine

摘要

A technique for embodying self-diagnosis in a facsimile machine including a printer with a recording element for receiving or scanning data and a temperature sensor for sensing a surface temperature of the recording element is performed by sensing an input voltage corresponding to the changed surface temperature of the recording element when a preset number of lines of a document are printed, comparing a reference voltage received when the recording element is not driven with the surface temperature sensed in the sensing step, and providing an error message when the sensed voltage is the same as the reference voltage. Thus, the printing or transmitting is performed only when accurate data is received or scanned, while the printing or transmitting by the successive reception or scanning of white data or black data, being error data, is blocked to prevent unnecessary power dissipation and the waste of recording paper.