Brother International 9840CDW Users Manual - English - Page 191
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Troubleshooting and routine maintenance CAUTION DO NOT use flammable substances near the machine. DO NOT use any type of spray to clean the inside or outside of the machine. Doing this may cause a fire or electrical shock. Refer to Routine maintenance on page 152 for how to clean the machine. d Clean the corona wires as follows. 1 Push to release the latches of the white corona wire cover (1), and then open the cover. 1 CAUTION Be sure to return the tab to the home position (b) (1). If you do not, printed pages may have a vertical stripe. 3 Close the corona wire cover. C 1 2 1 2 2 Clean the corona wire inside the drum unit by gently sliding the green tab from left to right and right to left several times. 4 Repeat step 1 through step 3 to clean each of the remaining three corona wires. e Unpack the new toner cartridge. Hold the cartridge level with both hands and gently rock it from side to side five or six times to spread the toner evenly inside the cartridge. 1 175
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