LAUNCH X-431IV English User’s Manual32. Knowledge of X-431 IV2.1 X-431IV Component DescriptionFigure 2-12.1.1 ComponentsThey are: X-431IV main unit, SMARTBOX and MINIPRINTER. Each of the three parts has independentfunction.X-431IV Main UnitThe X-431IV main unit has all functions of a standard PDA, including personal information management,control panel, game, etc.SmartboxSMARTBOX bears all the functions that are essential for vehicle diagnose. SMARTBOX is designedelaborately in its functions for future update (download and update online).MiniprinterIt is for printing out the test result. Thermal printing paper in size Φ30×57mm (inner hole: Φ7mm) isused.