Brother MFC 4300 owner manual Cleaning the Printer

Models: MFC 4300

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M A I N T E N A N C E
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5 Gently wipe the scanner window and the toner sensor with a clean soft dry cloth. Do NOT use isopropyl alcohol to clean the scanner window or the toner sensor.
Wipe the gears with a clean dry cloth.
Wipe the electric terminals with isopropyl alcohol on a cotton swab.
Just after you have used the MFC, some internal parts of the machine are extremely HOT! When you open the top cover of the MFC, never touch the shaded parts as shown in the diagram below.
HOT!
Inside the Fax Machine
Electrical
Terminal

Cleaning the Printer

Caution

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 because it contains toner. If toner scatters and your hands or clothes get dirty, immediately wipe or wash it off with cold water.

1Open the top cover.

2Remove the drum unit assembly.

Toner Sensor

Gears

Scanner Window

Sensor Strip

WARNING

15 - 24 T R O U B L E S H O O T I N G A N D R O U T I N E

Page 144
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Brother MFC 4300 owner manual Cleaning the Printer