Power Supply - Canon DR-2580C Service Manual

CHAPTER 2 FUNCTION & OPERATION
VI. POWER SUPPLY

1. Power Supply

The AC adapter is used for the power
supply of this machine. The values of AC input
and output power are 100-240V 50/60Hz and
+16VDC, respectively.
Use the AC adapter which is enclosed
with this machine.
The output power is input to the control
PCB. And then, +3.3V and +5V are generated
there.
+3.3V, +5V and +16V are supplied for
each IC including the CPU, for CIS LED and
ICs including the analog processor, and for
driving the motors, respectively.
The power for the optional flatbed unit is
100-240V
50/60Hz
2-30
+16V
AC adapter
Figure 2-601
COPYRIGHT © 2005 CANON ELECTRONICS INC.
supplied by this machine.
The AC adapter has the overload protection
function to automatically block the power
output in the event of a failure such as short
circuit on the load side of the AC adapter.
This machine will shift into the power
saving mode if such states as no document
feeding and no USB interface communication
continue. In the power saving mode, the
electrical circuits enter the sleep state. The
CPU, however, does not shift into the sleep
state.
The machine returns to the standby mode
from the power saving mode when any
communication is carried out on the computer
side or when any job button is pressed.
Control PCB
DC/DC
converter
CANON DR-2580C FIRST EDITION APR. 2005
+16V
+3.3V
+5V