Quick Startup - Canon LBP351 Series Service Manual

Power Supply PCB
• +24 V: Motor, Solenoid, High-voltage Power Supply PCB, and Pickup Options
• +5 V: Laser Driver PCB
• +3.3 V: High-voltage Power Supply PCB, Control Panel, Sensor, Main Controller PCB, and DC Controller PCB

Quick Startup

Setting quick startup reduces the time from when the Power Switch is pressed until screen operation becomes possible.
When the quick startup is set, pressing the Power Switch to turn off the power enables quick startup the next time the power is
turned on (quick off).
NOTE:
The quick startup function can be set from the menu.
- Setup > Control Menu > Main Pwr Quick Start
[On]: Quick startup is executed
[Off]: Quick startup is not executed (default)
When quick startup is set to ON, power is supplied to the following PCBs even when the Main Power Switch is OFF.
AC Relay PCB
All-night Power Supply PCB
Sleep Interface PCB
Main Controller PCB
CAUTION:
Prohibited items when quick off
• Disconnecting the power plug from the outlet
• Inserting and removing an SD card
• Installing and removing the Duplex Unit
• Installing and removing pickup options
Never do any of the above in quick-off mode as doing so will cause an engine failure, controller PCB failure, MEAP data
damage, etc.
In quick-off mode, be sure to perform a shutdown as described below and then disconnect the power plug from the outlet
and perform the work.
• Reset > Shut Down > Yes
A shutdown can be performed by pressing the Main Power Switch for at least 5 seconds, but this is not recommended
because the power may be turned OFF before the MEAP shutdown process completes.
Furthermore, under the following conditions (settings), the machine always starts up normally (even if quick startup is ON).
At first startup after the power plug is connected to the outlet
Network related (following accessed from Setup > Network)
AC/DC
All-night Power
AC Relay PCB
Supply PCB
5V
5V
AC/DC
24V
24V
AC/DC
Quick startup setting ON (quick off)
3.3V
Sleep I/F PCB
DC Controller PCB
3.3V
DC/DC
FIXING
Power supplied
Power supplied
Power supplied
Power supplied
39
2. Technical Explanation (Device)
3.3V
Main Controller
PCB
MOTER
24V
5V
3.3V
Quick startup setting OFF
Power supplied
Power supplied
OFF
OFF