Brother FAX 3750 - Manual (Page 123)

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T R O U B L E S H O O T I N G A N D M A I N T E N A N C E
3 Wipe the electric terminals with isopropyl alcohol on a cotton swab.
4 Wipe the gears with a clean dry cloth.
5 Gently wipe the scanner window and the toner sensor with a clean soft
dry cloth. Do NOT use isoproply alcohol to clean the scanner window
or the toner sensor.
Cleaning the Drum Unit
We recommend you place the drum unit on a drop cloth or large piece of
disposable paper to avoid spilling and scattering toner.
1 Carefully turn the drum unit upside down.
2 Clean the primary corona wire inside the drum unit by gently sliding
the tab from right to left several times.
3 Return the tab to the home position ( ▼ mark position) before
reinstalling the drum unit.
Tab
Corona
Wire
Home
Position
( ▼ )
CAUTION
If you do not position the tab at the home position, printed pages may have
vertical stripes.
4 Install the drum unit into the fax machine.
See “Replacing the Drum Unit” on pages 117–121.
5 Close the top cover.
6 Plug in the power cord.