When a specimen from a specimen ionizing unit is not sufficiently ionized, is caused to remain in sites other than a pore in an introducing section and be deposited as a product such as an oxide or carbide, which causes a deterioration in the performance of the mass spectrometry device. The cleaning apparatus using the multi functional cleaning module comprises a driving part having a loading and an unloading portions as well as the multi functional cleaning module. The insert also serves to establish a mechanical connection between the capacitor and the terminal pin. The guide member is supported on a harness control tube that engages a rack device to fix the position of the harness control tube when the position of the head rest is selected.