Boot Method - Canon imageRUNNER ADVANCE 4551i Service Manual

Turn O N the m ain pow er s w itc h.
■ Basic Check Items
1. Check if the Power Supply Plug is disconnected.
2. Check if the Connection Cable between the Riser PCB and Control Panel is disconnected.
3. Check if the Main Controller PCB is correctly connected to the Riser PCB.
4. Check the all-night power supply connection. Replace the non-all-night power supply if it cannot be recovered.

Boot Method

1. Turn ON the Main Power Supply Switch while pressing the numeric keys '2' and '4' simultaneously.
Does the Power
Supply LED on the Control
Panel light up?
Yes
Does the main body
boot c orrec tly ?
Yes
Take an ac tion appropriate
f or the error.
No
Ex ec ute bas ic c hec k.
No
Ex ec ute Controller Sy s tem
Error Diagnos is Tool.
351
6. Troubleshooting