Other MessagesUnknown le.Cause Corrective ActionData sent to keep the printer up to date (such aspaper information) is in the wrong format.Check the print job. Turn off the printer and wait awhile before restoring power, and then resend thedata.Check the rmware version. Turn off the printer andwait a while before restoring power, and then resendthe rmware.You have uploaded rmware for a different model.If the message is displayed again, contact yourCanon dealer for assistance.Prepare for parts replacement.Cause Corrective ActionIt is almost time to replace consumables for whichservice is required.If Parts replacement time has passed. is displayed,you can continue to use the printer for some time.Contact your Canon dealer for assistance.Parts replacement time has passed.Cause Corrective ActionIt is past the recommended time to replaceconsumables for which service is required.Contact your Canon dealer for assistance.Multi-sensor errorCause Corrective ActionDirect sunlight or strong lighting may be shining onthe printer and causing the sensor to malfunction.Take steps to ensure the printer is not used whenexposed to direct sunlight or strong lighting.The performance of a sensor inside the printer maybe impaired.Contact your Canon dealer for assistance.Hardware error. xxxxxxxx-xxxx (x represents a letter ornumber)In the following situations, turn off the printer and wait at least three seconds before restoring power. However,keep the printer off and remove the roll if the last portion of roll paper was used during a print job and papercould not be advanced because the trailing edge is taped to the roll. If tape and the Belt Stopper have notbeen removed from inside the Top Cover, turn off the printer, open the Top Cover, and remove the tapeand Belt Stopper before restoring power.If the message is still displayed, write down the error code and message, turn off the printer, and contact yourCanon dealer for assistance.• The error message is displayed with the following instructions: Turn off printer, wait, then turn onagain.Error Message 785
