Brother International IntelliFax-3550 Users Manual - English - Page 112
Replacing the Drum Unit
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3550-US-5.0 REPLACING THE TONER CARTRIDGE AND DRUM UNIT Replacing the Drum Unit The machine uses a drum unit to create the print images on paper. If the display shows CHANGE DRUM, it indicates the drum unit is nearly at the end of its life. We recommend you prepare a new drum unit to replace the current one. Even if the display shows CHANGE DRUM, you may be able to continue to print without replacing the drum unit for a while. If there is a noticeable deterioration in the output print quality even before CHANGE DRUM is shown, then the drum unit should be replaced. WARNING • When removing the drum unit, handle carefully because it contains toner. • You should clean the machine when you replace the drum unit. See page 13-1. NOTE: The drum unit is a consumable, and it is necessary to replace it periodically. The drum unit is rated at approximately 20,000 pages. There are many factors that determine the actual drum life, such as temperature, humidity, type of paper and toner that you use and the number of pages per print job, etc... The drum life is estimated at approximately 20,000 pages at 20 page per job and 8,000 pages at 1 page per job. The actual number of pages your drum will print may be significantly less than these estimates. Because we have no control over the many factors that determine the actual drum life, we can not guarantee a minimum number of pages that will be printed by your drum. For best performance, use only genuine toner, and the product should be used only in a clean, dust-free environment with adequate ventilation. Follow these steps to replace the drum unit: 1) Turn off the power switch or unplug the power cord. 2) Open the top cover. 3) Drum unit Top cover 3) Remove the old drum unit. (See page 12-2.) WARNING Just after you have used the machine, some internal parts of the machine are extremely HOT! So please be careful. (See page 13-2.) 12-5