Control panel cover assembly..............................................................................................84 External control-panel cable.................................................................................................87 Output bin base cover or output bin extender .....................................................................88 Output bin paper lever..........................................................................................................89 ADF right cover.....................................................................................................................90 ADF right corner cover..........................................................................................................92 ADF left cover.......................................................................................................................93 ADF left corner cover............................................................................................................94 ADF rear cover......................................................................................................................95 Scanner right cover ..............................................................................................................96 Scanner left cover ................................................................................................................97 Scanner front cover...............................................................................................................98 Scanner rear cover ..............................................................................................................99 Right hinge cover................................................................................................................100 Left hinge cover..................................................................................................................101 Upper hinge cover...............................................................................................................102 Internal components............................................................................................................................103 ADF assembly or scanner assembly..................................................................................104 ADF jam access latch.........................................................................................................106 Right hinge guide................................................................................................................107 Left hinge guide..................................................................................................................108 Damper cover, left damper spring, right damper spring, or damper base cover................109 White mylar backing or white mylar backing spring ..........................................................110 Fan filter..............................................................................................................................111 ADF cable...........................................................................................................................112 Separation pad case...........................................................................................................115 Clear plastic paper guide....................................................................................................116 White scan background......................................................................................................117 Scanner controller board....................................................................................................118 Flatbed-unit assembly.........................................................................................................119 Power supply......................................................................................................................122 Power-switch assembly......................................................................................................125 Scanner base fan................................................................................................................126 Power plug..........................................................................................................................127 SCB cable ..........................................................................................................................128 Internal control-panel cable................................................................................................129 Scanner glass and cover....................................................................................................130 Carriage lock assembly......................................................................................................132 Open sensor assembly.......................................................................................................133 Inverter................................................................................................................................134 Optical assembly.................................................................................................................137 Scanner motor....................................................................................................................140 Scanner motor belt..............................................................................................................144 Scanner lamp......................................................................................................................145 Scanner belt assembly.......................................................................................................146 Scanner motor fan..............................................................................................................148 7 Troubleshooting Understanding the troubleshooting process........................................................................................150 Initial troubleshooting checklist ..........................................................................................150 vi