Canon printer imageCLASS MF236n User Manual
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When wiping the transparent plastic part (), take care not to bend the plastic. Iftheproblempersists Remove the transparent plastic part () and wipe it. 1Hold the tabs () at both ends of the transparent plastic part, and remove the plastic part by gently lifting the rearward end 4rst. The plastic part () is rather damageable. When removing it, be careful not to bend it. 2Wipe the scanning area ().3Wipe the back side of the transparent plastic part. Maintenance 593
4Wait for the plastic part to dry completely.5Place the transparent plastic part back into position. Make sure of the proper orientation, then hold the tabs and place the plastic part back into position by gently lowering the frontward end 4rst. 4Waitforthecleanedareatodrycompletely.5Gentlyclosethefeeder.6ReconnectthepowercordandturnONthemachine.Maintenance 594
Feeder 1469-0A0 Dust and graphite powder may adhere to the roller inside the feeder and cause smudges to appear on printouts. To clean the feeder, perform the following procedure. 1TurnOFFthemachine,andunplugthepowercordfromtheACpoweroutlet. When you turn OFF the machine, data that is waiting to be printed is deleted. Fax documents that were received by using the Memory Reception function, faxes that are waiting to be sent, and reports that are automatically printed after sending and receiving faxes are not deleted. 2Openthefeedercover.MF249dw MF247dw/MF236n 3Wiperoller()insidefeeder. Clean the areas with a well-wrung-out cloth dampened with water. Then, wipe the area with a soft, dry cloth. MF249dw MF247dw/MF236n 4Gentlyclosethefeedercover.5ReconnectthepowercordandturnONthemachine.Maintenance 595
FixingAssembly 1469-0A1 Dirt may adhere to the 4xing units inside the machine and cause black streaks to appear on printouts. To clean the 4xing unit, perform the following procedure. Note that you cannot clean the 4xing unit when the machine has documents waiting to be printed. To clean the 4xing unit, you need paper larger than plain A4 or Letter size paper. Set the paper in the paper drawer or manual feed slot before performing the following procedure. Cleaning consumes the toner cartridge. Make sure that there is suwcient toner cartridge remaining beforehand. It takes approximately 90 seconds to clean the 4xing assembly. CheckingTonercartridgeLevel(P.600) LoadingPaperintheManualFeedSlot(P.50) 1Pressandtap.2Tap.3Tap.4Loadpaper(A4/LTRorlarger)inthemanualfeedslot,andtap. After cleaning is completed and the message appears, press to return to the Screen. Maintenance 596
MachineInterior 1469-0A2 Clean the interior of the machine regularly so that toner/paper dust does not collect. 1TurnOFFthemachine,andunplugthepowercordfromtheACpoweroutlet. When you turn OFF the machine, data that is waiting to be printed is deleted. Fax documents that were received by using the Memory Reception function, faxes that are waiting to be sent, and reports that are automatically printed after sending and receiving faxes are not deleted. 2Lifttheoperationpanel. Ifyoucannotlifttheoperationpanel Make sure the feeder is completely closed. If a thick original such as a book is placed on the platen glass, remove the original. Forcing the operation panel up may cause damage. 3Openthetonercoverbythegripatthefrontrightofthetonercover.4Pullthetonercartridgeoutofthemachine.Maintenance 597
5Usingalint-freeclean,soft,drycloth,wipeawaytoner/paperdustfromtheinside.6Installthetonercartridge. Align the right and left projections () with the toner cartridge guides, and push securely all the way in. 7Closethetonercover,andlowertheoperationpanel. Ifyoucannotclosethetonercover Make sure that the toner cartridge is inserted properly. Forcing it closed may cause damage. 8ReconnectthepowercordandturnONthemachine.Maintenance 598
ReplacingTonerCartridges 1469-0A3 The machine will display a message when a toner cartridge is nearly empty. Note that the print quality becomes poor if you continue printing without taking any action. You can check the remaining toner cartridge level on the display. WhenaMessageAppear(P.599) IfPrintoutsArePoorinQuality(P.600) CheckingTonercartridgeLevel(P.600) C When a Message Appear The message that is displayed depends on the amount of remaining toner cartridge. Depending on which message is displayed, you will need to make sure that you have a replacement toner cartridge ready or replace the toner cartridge. BeforeReplacingtheTonerCartridge(P.602) HowtoReplaceTonerCartridges(P.604) Consumables(P.659) This message noti4es you that a toner cartridge needs to be replaced soon. Shake the toner cartridge to evenly distribute the toner inside the cartridge. Replace the toner cartridge if you see this message before you start to print a large job. Specifywhenthismessageisdisplayed You can set any value as the percentage of the amount remaining in the toner cartridge that triggers this message. Displ.TimingforCartridgePrep.Notif.(P.524) This message noti4es you that a toner cartridge has reached the end of its lifetime. It is recommended that you replace the cartridge with a new one. You can continue printing, but the print quality cannot be guaranteed. If this message is displayed, the incoming fax will be stored in the memory without being printed. Also, reports are not printed, even if they are set to be printed automatically. Whenamessageisdisplayed Maintenance 599
If the message is displayed when the machine is receiving a fax or automatic report output is set, received
faxes and reports will be stored in the machine so that they do not appear faded after they are printed.
To continue printing even if the toner cartridge is running low, set to .
ContinuePrint.WhenNearCart.LifeEnd(P.507)
C If Printouts Are Poor in Quality
If your printouts begin to show any of the following features, one of your toner cartridges is nearly empty. Replace the nearly empty toner cartridge even if no message is displayed.
BeforeReplacingtheTonerCartridge(P.602)
HowtoReplaceTonerCartridges(P.604)
White streaks appearPartially fadedUneven densityToner smudges and splatters appearBlank space of originals becomes grayish in
printouts
C Checking Toner cartridge Level
You can check the amount remaining in the toner cartridge according to the following, whenever you want to. It is recommended that you check the level before you start to print a large job.
Check the amount remaining in the toner
cartridge
CartridgeLevel
Displays the amount remaining in the toner cartridges. Other internal parts may reach the end of their lifetime before the toner runs out.
Maintenance
600
The displayed amount remaining in the toner cartridge can be used only as a guide and may differ from the actual amount. LINKS Consumables(P.659) Maintenance 601
BeforeReplacingtheTonerCartridge 1469-0A4 Perform the following before replacing the toner cartridge. The message may no longer appear, or print quality may be improved. Review cautions for handling the toner cartridge before starting. MaintenanceandInspections(P.9) Consumables(P.10) 1Lifttheoperationpanel. Ifyoucannotlifttheoperationpanel Make sure the feeder is completely closed. If a thick original such as a book is placed on the platen glass, remove the original. Forcing the operation panel up may cause damage. 2Openthetonercoverbythegripatthefrontrightofthetonercover.3Pullthetonercartridgeoutofthemachine.Maintenance 602