Brother DCP-7020 manual 5, 6, A

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5Important information
Federal Communications Commission (FCC) Declaration of Conformity
(USA only).................................................................................................5-1
Industry Canada Compliance Statement (Canada only) ............................ ...5-2
Disconnect device ............................. ............................................. ...............5-2
International Energy Star® Compliance Statement........................................5-2
Laser safety...................................................................................................5-2
FDA regulations.................. ................................................ ...........................5-2
Important safety instructions..........................................................................5-3
Trademarks...................................................................................................5-4
6Troubleshooting and routine maintenance
Troubleshooting...................................................................................................6-1
Error messages.............................................................................................6-1
Document jams .............................................................................................6-3
Paper jams....................................................................................................6-4
If you are having difficulty with your DCP......................................................6-8
Improving the print quality...........................................................................6-11
Cleaning the drum unit ................................................................................6-12
Packing and shipping the DCP........ .............................................. ....................6-15
Routine maintenance................... ................................................. .....................6-16
Cleaning the outside of the DCP.................................................................6-16
Cleaning the scanner glass ............................................. ............................6-17
Cleaning the laser scanner window............ ................................................ .6-17
Cleaning the corona wire.............................................................................6-19
Replacing the toner cartridge (TN-350) .......................................... .............6-19
How to replace the toner cartridge..............................................................6-20
Replacing the drum unit (DR-350)...............................................................6-22
Machine Information..........................................................................................6-24
Checking the Serial Number........................................................................6-24
Checking the Page Counters.......................................................................6-24
Checking the Drum Life...............................................................................6-25
AAppendix
On-screen programming.................. .............................................. ..................... A-1
Menu table....................................................................................................A-1
Menu Mode.........................................................................................................A-1