Question about Brother MFC-640CW All-In-One InkJet Printer
Press menu then start bk copy then 4 times arrow up. Lights will flash and machine turns to maintenance mode. In case you cant see an 2 digit error code press start bk copy again.
If the error code starts with 4 the printhead is defective and needs replacement.
If you have another code displayed search code here at fixya. Most of them are explained a thousand of times...
To leave the maintenance mode press 9 then 9.
Posted on Feb 17, 2008
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Posted on Jan 02, 2017
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