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Remove the drum unit and toner cartridge assembly. Leave the toner cartridge installed in the drum unit. Drum UnitFront Cover MAINTENANCE Troubleshooting and Maintenance 79 80 Chapter 9 5 Place the drum unit and toner cartridge assembly into the plastic bag and seal the bag completely. 6 Close the front cover. Put the front output bin extension into position. 7 Switch off and unplug the machine from the AC outlet. 8 Unplug the Parallel cable or USB cable from the machine. 9 Wrap the machine in the plastic bag and place it in the original carton with the original packing material. 10 Place documents (manual, printed material and CD-ROM), drum unit and toner cartridge assembly and power cord into the carton as shown below. 11 Close the carton and tape it shut. Plastic Bag Drum Unit Toner Cartridge Regular Maintenance You can keep the machine in optimum condition by cleaning it on a regular basis. It is a good idea to clean the drum unit during this routine. Avoid using thinners or other organic solvents to clean the machine and do not use water. Cleaning the Scanner Switch off and unplug the machine and lift the document cover. Clean the glass platen and white film with isopropyl alcohol on a lint-free cloth. Document Cover White Film Glass Platen Lift the ADF unit. Clean the white roller, and the glass strip under the roller with isopropyl alcohol on a lint-free cloth. White Roller Glass Strip ADF Unit MAINTENANCE Troubleshooting and Maintenance 81 Cleaning the Printer • Do not use isopropyl alcohol to remove dirt from the control panel. It may cause a crack on the panel. • Do not use isopropyl alcohol to clean the scanner window or the toner sensor. • Do not touch the scanner window with your finger. • Handle the drum unit carefully as it contains toner. If toner scatters and your hands or clothes get dirty, immediately wipe or wash it off with cold water. After you have used the machine, some internal parts of the machine are extremely HOT! When you open the front cover of the machine, never touch the shaded parts shown in the diagram below. 1 Switch off and unplug the machine. 2 Open the front cover. 3 Remove the drum unit assembly. HOT! Front view 4 Gently clean the scanner window with a clean soft dry cloth. Do not use isopropyl alcohol. Scanner Window 82 Chapter 9 Cleaning the Drum Unit We recommend you place the drum unit on a drop cloth or large piece of disposable paper to avoid spilling and scattering toner. 1 Clean the primary corona wire inside the drum unit by gently sliding the tab from right to left several times. 2 Return the tab to the home position ( mark position) before reinstalling the drum unit. Tab Corona Wire Home Position ( ) If you do not position the tab at the home position, printed pages may have vertical stripes. 3 Install the drum unit into the machine. (See Replacing the Drum Unit, page 88.) 4 Close the front cover. Troubleshooting and Maintenance 83 MAINTENANCE Replacing the Toner Cartridge The machine can print up to 6,000 pages using a high yield toner cartridge (TN-6600). When the toner cartridge is running low, the display shows CHANGE TONER. The machine is supplied with a standard toner cartridge (TN-6300) that must be replaced after approximately 3,000 pages. Actual page count will vary depending on your average document type. It is a good idea to keep a new toner cartridge ready for use when you see the toner low warning. Discard the used toner cartridge according to local regulations. If you are not sure of them, consult with Brother dealer for service. Be sure to seal the toner cartridge tightly so toner powder does not spill out of the cartridge. When discarding used toner cartridges, keep them separate from domestic garbage. It is recommended that you clean the machine when you replace the toner. Toner Empty Indicator When the toner cartridge is running low, the display shows CHANGE TONER and the Toner Empty LED on the control panel flashes on and off to indicate the toner is low. Toner Empty LED Display The Toner Empty LED light stays on and the display shows TONER EMPTY to indicate that the toner is empty. Once this indication appears, the machine will not resume printing until you have installed a new toner cartridge. Steps for Replacing Toner Cartridge After you have just used the machine, some internal parts of the machine will be extremely HOT! So, never touch the shaded parts shown in the illustration below. HOT! Front view 84 Chapter 9 1 Open the front cover and pull out the drum unit. Place the drum unit on a drop cloth or large piece of disposable paper to avoid spilling and scattering the toner. 2 Hold down the lock lever on the right and pull the toner cartridge out of the drum unit assembly. Lock Lever Handle the toner cartridge carefully. If toner scatters on your hands or clothes, immediately wipe it off or wash them with cold water. MAINTENANCE Troubleshooting and Maintenance 85 3 Unpack the new toner cartridge. Place the used toner cartridge into t...