Canon iR6570 series Service Manual page 417

3. AC Off State
The machine is in an AC off state when its main power switch remains off, with all its power supplies and heater control mechanisms also remaining off.
4. Power Supply Arrangement
The following shows how the various loads of the machine are supplied with power while the machine is in individual states:
Input
Output
*Output from the main controller PCB.
Main controller PCB
SDRAM
CPU
Image
processing
block
Scanner unit
supplied with power in sleep 3
not supplied with power in sleep 3
Operation set AC off
Main power
OFF
switch
Front door
-
switch
RMT1* -
RMT2* -
3VB OFF
3VB OFF
5V OFF
12VU OFF
24VU1 OFF
24VU2/3/4 OFF
LAN
controller
block
Printer unit
F-10-6
T-10-18
Front door
Sleep 3
open
ON ON ON
- OFF OFF
0 1 -
0 0 1
ON ON ON
OFF ON ON
OFF ON ON
OFF ON ON
OFF OFF ON
OFF OFF OFF
Control panel
power switch
Fax
reception
detection
Hard disk
drive
Standby,
Sleep 1 copying, power
save
ON ON
ON ON
1 -
0 1
ON ON
ON ON
ON ON
ON ON
OFF ON
OFF ON
Chapter 10
10-11