When a Problem Cannot Be Solved0YSF-06SIf you cannot solve a problem by referring to the information in this chapter, contact your local authorized Canondealer 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 CanonWhen contacting us, have the following information ready:● Product name (LBP712Cx/LBP710Cx)● Dealer where you purchased the machine● Details about your problem (such as what you did, what happened as a result, and displayed messages)● Serial number (10 alphanumeric characters long, found on the label on the back side of the machine)Checking the serial number from the operation panel● You can also check by ( ) .Troubleshooting559