Brother MFC-9140CDN User's Guide download pdf (Page 110)

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d In the ADF unit, clean the white bar (1)

and the scanner glass strip (2)

underneath it with a soft lint-free cloth

slightly moistened with water.

NOTE

In addition to cleaning the scanner glass

and glass strip with a soft lint-free cloth

slightly moistened with water, run your

finger tip over the glass to see if you can

feel anything on it. If you feel dirt or debris,

clean the glass again concentrating on

that area. You may need to repeat the

cleaning process three or four times. To

test, make a copy after each cleaning.

e Close the document cover.

f Turn on the machine.

Cleaning the corona wires A

If you have print quality problems or the

Touchscreen shows Drum !, clean the

corona wires as follows:

a Open the top cover until it locks in the

open position.

b Remove the toner cartridge and drum

unit assembly.

2

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