
KX-FT21RS
6.4.4.SCANNING BLOCK
The scanning block of this device consists of a control circuit and a contact image sensor made up of a celfoc lens array, an LED array, and photoelectric conversion elements.
When an original is inserted and the start button pressed, pin 154 of IC1 goes to a high level and the transistor inside IC7 turns on. This applies voltage to the LED array to light it. The contact image sensor is driven by each of the
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