- 61 -3. Basic OperationsNames of ComponentsThe chapter describes the name of each component.• Front View• Rear View• Inside of the machineFront ViewSymbolNameaAuto document feeder (ADF)bDocument traycScanner unitdOperator panelBasic Operations on the Operator PaneleUSB portfMP tray (Multipurpose tray)gOpen buttonhPaper supporteriEnvelope lever