10 MaintenanceXerox WorkCentre 4150 User Guide 155Customer Replaceable UnitsThere are 3 replaceable Customer Replaceable Units (CRUs) on the machine:• Toner Cartridge• SMart Kit TM Drum Cartridge• StaplesThe machine will display a message on the touch screen when any of theabove need to be reordered. This message is a warning that the unit is nearingthe end of its life. Only replace the unit when a message actually instructs youto do so.To replace a CRU, follow the instructions on the User Interface or refer to therelevant sections below.CAUTION: When replacing consumables, DO NOT remove the covers orguards that are fastened with screws. You cannot maintain or serviceany of the parts that are behind these covers and guards. DO NOTattempt any maintenance procedure unless specifically described in thedocumentation supplied with your machine.Toner CartridgeThis procedure shows you how to remove a used toner cartridge and replaceit with a new toner cartridge.New toner cartridges have a capacity of approximately 20,000 images with anaverage area coverage of 5%. The machine will indicate the percentage oftoner used and the number of days remaining. When the notification messageis enabled, the machine will tell you when you will need to order a newcartridge and when to fit it. For information on setting the notificationmessage, please refer to Toner Cartridge Reorder Notification in the Setupschapter on page 130.If the feature is enabled, a message will appear on the display screen advisingyou to replace the toner cartridge. If you want to replace the toner cartridgenow, open the front door. The instructions on the screen will tell you how to fita new cartridge.If you do not want to replace the toner cartridge now you can select the Abortbutton. The machine will continue to operate but will NOT make copies orprints.
