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MFC-9420CN > FAQ's & Troubleshooting > Maintenance > faq000273_010
How can I clean the inside of the machine?
Clean the inside of the machine as follows.
Do NOT use flammable substances or any type of spray to clean the inside or outside of the machine. Doing this may cause a fire or electrical shock.
Cleaning to prevent paper jams:
Cleaning the laser glass:
Open the scanner unit.
Open the inside cover.
To release the lock, push the green belt cartridge lock levers that are on both sides inwards.
Remove the OPC belt cartridge from the machine.
Place the OPC belt cartridge on a flat surface and cover the shiny green OPC belt with a piece of paper to prevent exposing it to light.
Open the front cover of the machine.
Take all the toner cartridges out of the machine.
Clean the surface of the laser unit with a dry soft, lint-free cloth.
Open the laser glass cover.
Clean the surface of the laser glass with a dry soft, lint-free cloth.
Do not use volatile liquids such as thinner or benzene for cleaning the laser glass.
Close the laser glass cover.
Put all the toner cartridges and the OPC belt cartridge back in the machine. Do not try to push or lock the toner cartridge in. It must rest loosely in the cartridge guide rails.
Close the front cover and the inside cover, and then close the scanner unit.
Plug the machine's power cord back into the AC power outlet first, and then plug in the telephone line cord. Turn on the machine's power switch.
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