Theory of Operation Ver. 1.0 Sep. 2008
22. Other control
111
bizhub C200
Composition/Operation
22.3 Parts operated when the main power switch and sub power
switch are turned ON
22.3.1
Parts operated when the main power switch and sub power switch are
turned ON
• When the sub power switch is turned ON, MFBU board detects it and sends a control
signal to the DC power supply through the printer control board.
• The DC power supply then supplies 3.3 V DC, 5V DC, 12V DC, 15 V DC, and 24 V DC to
all boards and options. It also turns ON the relays in the PWBs, preparing AC power
ready to be supplied to each heater lamp.
NOTE
• To turn OFF the main power switch, turn OFF the sub power switch before and
make sure that blue lighting of the start key turns off and then goes out.
• To turn OFF and ON the main power switch, first turn OFF the main power switch
and wait for 10 sec. or more before turning it ON again. If a setting value or values
in the tech. rep. mode are changed, it takes 10 sec. or more to incorporate the set-
ting changes properly in the machine.
• Power switch OFF/ON procedure
1. Turn OFF the sub power switch.
2. Turn OFF the main power switch.
3. Wait for 10 sec.
4. Turn ON the main power switch.
5. Turn ON the sub power switch.
A02FT2J047AA
Main power switch
Sub power switch
Y109670-2 Theory of Operation