A sheet conveying device includes a conveyor, a sound collector, an operation unit, and circuitry. The conveyor conveys a sheet in a sheet conveyance direction. The sound collector collects sound produced by conveying the sheet by the conveyor. The operation unit outputs information of a conveyance of the sheet. The circuitry is to cause the sound collector to collect the sound, detect a factor of an abnormal conveyance produced by conveying the sheet based on the sound collected by the sound collector, locate a position of the factor of the abnormal conveyance of the sheet in response to a detection of the factor of the abnormal conveyance of the sheet, and output, to the operation unit, the position of the factor of the abnormal conveyance of the sheet.

A feeding device includes a housing, a sheet feeder tray that mounts a sheet, a feeding unit which transports the sheet from the sheet feeder tray, and is detachable from a rotating shaft, and a control unit that controls rotation of the feeding unit. The feeding unit is provided in such a way as to be turnable to a feeding position to transport the sheet mounted on the sheet feeder tray and to a replacement position to enable detachment from the rotating shaft. When replacing the feeding unit, the control unit switches the position of the feeding unit to the replacement position.