An apparatus monitors performance of a power inverter to detect malfunctions. A mouth ring of the toner container is provided with the sealing valve. The plurality of reflected seismic signals having the plurality of frequencies.
Algorithmically generated prior art
An apparatus monitors performance of a power inverter to detect malfunctions. A mouth ring of the toner container is provided with the sealing valve. The plurality of reflected seismic signals having the plurality of frequencies.