Top cover is open.Cause Corrective ActionThe printer has detected that the Top Cov-er is open.Open the Top Cover fully, remove any foreign objects, and close theTop Cover again.If the error occurs again, close the Top Cover, turn off the printer, andwait a while before restoring power.Prepare for parts replacement.Cause Corrective ActionIt is almost time to replace consuma-bles for which service is required.You can continue to use the printer for some time until "Parts replace-ment time has passed." will be displayed.Contact your Canon dealer for assistance.Parts replacement time has passed.Cause Corrective ActionIt is past the recommended time to replace consumables for whichservice is required.Contact your Canon dealer for assistance.Unknown file.Cause Corrective ActionData sent to keep the printer up to date (suchas paper information) is in the wrong format.Check the data. Turn off the printer and wait a while before re-storing power, and then resend the data.You have uploaded firmware for a differentmodel.Check the firmware version. Turn off the printer and wait a whilebefore restoring power, and then resend the firmware.If the message is displayed again, contact your Canon dealer forassistance.Multi-sensor errorCause Corrective ActionDirect sunlight or strong lighting may be shin-ing on the printer and causing the sensor tomalfunction.Take steps to ensure the printer is not used when exposed to directsunlight or strong lighting.The performance of a sensor inside the printermay be impaired.Turn off the printer and wait at least three seconds before restoringthe power.If the message is displayed again, contact your Canon dealer forassistance.Error Message > Other Messages >iPF755 Top cover is open.13827
