An apparatus is installed in a portable terminal to isolate hardware and power source problems and to quickly find the cause of a given problem occurring in the terminal. In the apparatus, a monitoring circuit (1) monitors and measures the voltages of power sources of the terminal at predetermined intervals....http://www.google.fr/patents/US6122750?utm_source=gb-gplus-shareBrevet US6122750 - Apparatus for, and method of, isolating hardware and power source problems
Apparatus for, and method of, isolating hardware and power source problems
