A paper document transacting apparatus for storing and extracting a paper document into and out of storages through a transporting unit. The apparatus comprises a detector for detecting a transporting condition of the paper document, an indicator for indicating an abnormal transport position of the document, a control switch for controlling a transporting unit, and a controller for controlling the indicator such that, when the abnormal transport position is detected, at least a leading abnormal transport position in a transporting direction out of abnormal transport positions is indicated as well as driving the transporting unit at a low speed according to a signal from the control switch.According to another embodiment, a paper document transacting apparatus comprises a transporting unit capable of being pulled out of the paper document transacting apparatus, a driving device for driving the transporting unit at a low speed or at a normal speed, first and second switches provided in the transporting unit to change their ON and OFF states according to whether the transporting unit is pulled in or out of the paper document transacting apparatus, and a third switch for instructing the driving device of a low-speed operation.