CHAPTER 2
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COPYRIGHT
2002 CANON INC. CANOSCAN 8000F REV.0 OCT. 2002 PRINTED IN JAPAN (IMPRIME AU JAPON)
Figure 2-19
VI. POWER SUPPLY
DC power is supplied from the supplied AC adapter. Through power regulator, four DC power
sources (+3.3V, +5V, +12V and +16.8V) are used in the circuit. +3.3V and +5V are supplied for
the digital circuit and linear chip, +5V is for the Analog IC and home position sensor, +16.8V is
for the CCD PCB, and +12V is for the motor driver and scanning lamp.
CCD
PWM
PWM
12V
CCD PCB
Main PCB
16.8V to 12V
Linear
Regulator
Analog IC
Drive
Motor
FAU
Inverter
Scanning Lamp
FAU Lamp
Inverter
Motor Driver
12V to16.8V
Linear Regulator
12V
AC Adapter
+5V Regulator
+3.3V Regulator
Digital Circuit
IR LED
Home Position
Sensor