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DETAILED SECTION DESCRIPTIONS
PCBs AND THEIR FUNCTIONS
2.5.5. ADU (ADF Drive Unit)
Feed out sensor
Read sensor
Feed sensor
Document sensor
Document table
position sensor
Sensor
signals
The ADU controls the motors, clutches, and the indicators on the ADP board.
Also, it informs the sensor status to the SCU.
The SCU generates the control signals for each electrical component, then
these are sent to the ADU through the MBU. The drivers on the ADU convert
the control signals into drive pulses for the motors.
Driver
Motor
driver
Motor
driver
Drive
+5V
+24V
signals
2-24
October 9th, 1995
Pick-up clutch
Document table
lift
clutch
ADF
Paper transport
motor
Paper feed
motor
G404D503.wmf
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