Toshiba DP1600 Service Handbook page 13

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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 (DP2000/2500 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/TWD/SAD models) ........... 7-17

7.9 Disassembly and Replacement ................................................................ 7-18

Table of Contents

Dp2500 Dp2000