Output Of Power Supplies - Canon Image Reader-A1 iR5000i Service Manual

CHAPTER 7 EXTERNALS AND CONTROLS

3.1.3 Output of Power Supplies

The outputs of the machine's power supplies are controlled by the main power switch,
control panel power switch, or signal from the printer board.
The output is controlled by the DC power supply PCB as follows based on the combina-
tion of the signal from the printer board and the state of the power switch and the control
panel switch:
Main power Control panel
switch (SW1) switch or print
board signal
OFF OFF
ON OFF
ON ON
7-8 P
Power output
from DC power
supply PCB
None
3.3VB*
All
T07-301-04
COPYRIGHT © 2001 CANON INC.
Remarks
If the environment switch (SW3) is
ON, the drum heater will be supplied
with power (AC). In addition, if the
heater switch (SW4) is ON, the cassette
heater is supplied with power (AC).
*Supply is sent to the following:
3.3 VB:controller unit
2000 2000 2000 2000 CANON iR5000i/iR6000i REV.0 JUNE 2001