Other MessagesCarriage Cover is open.Cause Corrective ActionClose the Carriage Cover.(→P.719)The Carriage Cover is open.If the error occurs again, turn off the printer and waita while before restoring power.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.Unknown 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.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.Error Message 803