When a Problem Cannot Be Solved

If you cannot solve a problem by referring to the information in this chapter, contact your local authorized Canon dealer or the Canon help line.
Do not disassemble or repair the machine yourself
If you disassemble or repair the machine yourself, it may not be covered by warranty.

When Contacting Canon

When contacting us, have the following information ready:
Product name (MF729Cx / MF628Cw / MF621Cn)
Dealer where you purchased the machine
Details about your problem (such as what you did and what happened as a result)
Serial number (eight alphanumeric characters long, found on the label on the back side of the machine)
MF729Cx
 
MF628Cw / MF621Cn
 
Checking the serial number from  ()
Press  (), and tap <Check Device Configuration>.
Checking the serial number from the operation panel
Press   Tap <Device Status>  <Serial Number>.
0SCK-0C6