Question about Brother MFC-9420CN All-In-One Laser Printer
It sounds like there may be a speck of dust or similar on the laser slit glass. Pull out your OPC cartridge (the big green belt, be careful not to touch or damage it, and keep it out of the light as much as possible-lean it against the wall in a cupboard or under your desk), and pull out all 4 toner cartridges. Get a clean cloth and carefully wipe out any toner spills or other dust at the bottom of the area the OPC sits in. Maybe even blow gently through a straw to get toner out of tight corners. Make sure the narrow strip of glass that goes across the printer base under the OPC area is clean. Refit all parts and try again.
Posted on Feb 11, 2008
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Posted on Jan 02, 2017
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