If you are getting void lines and streaking through the print outs on a printer using the DR150CL drum unit you may wish to try this as an easy 5 minute fix.
This article applies to Brother DCP-9040CN, HL-4040CN, HL-4050CDN, MFC-9440CN, MFC-9450CDN, MFC-9840CDW series printers.
The DR-150CL drum unit has a built-in charge wire cleaner. To clean the charge wire please follow this guide:
- Open the printer front door.
- Pull the drum unit all the way out.
- Remove all of the toner units.
- Find the charge unit covers (see Fig.1) and flip them back (2 clips per cover).
- On the left hand side of each charge unit you will find a green slider (see Fig.2).
- Move that slider from one side of the drum to the other 2 or 3 times per unit. (Note: in some cases I have found an insect stuck in the charge housing, these should be removed).
- Make sure the green sliders are returned all the way to the left.
- Close charge unit covers.
- Re-fit the toner cartridges.
- Push the drum unit all the way back in to the printer.
- Close the front door and test printing.
If cleaning doesn’t fix your problem on your DCP9040CN, HL4040CN, HL4050CDN, MFC9440CN, MFC9450CDN or MFC9840CDW you may have a worn drum unit, empty toners or faulty toners.
