Toshiba e-studio 250 - Table of Contents

7. SCANNER ................................................ 7-1
7.1 Functions .................................................................................................. 7-1
7.2 Configuration ............................................................................................ 7-2
7.3 Scanner Motor Operation.......................................................................... 7-5
7.4 Scanner Motor Drive Circuit ...................................................................... 7-6
7.5 Exposure Lamp Control ............................................................................ 7-9
7.5.1 Exposure lamp ............................................................................. 7-9
7.5.2 Exposure Lamp Control Circuit .................................................... 7-10
7.6 General Description of CCD control .......................................................... 7-12
7.6.1 Photo-voltaic conversion .............................................................. 7-12
7.6.2 Shading compensation ................................................................. 7-13
7.7 Automatic Original-Size Detection Circuit (e-STUDIO200/250 series)...... 7-14
7.7.1 Principle of original-size detection ................................................ 7-14
7.7.2 Original size detection .................................................................. 7-14
7.8 Damp Heater Control Circuit (ASD/AUD/CND/SAD models) .................... 7-17
7.9 Disassembly and Replacement ................................................................ 7-18