Is that pitch black or grey backround ?
SOURCE: Fax machine won't copy or send a fax.
IT MAY BE A CIS BUT I WOULD TRY A SYSTEM CLEAR FIRST
FUNCTION *2864 IN SEQ. THEN 01
SOURCE: Brother Intellifax 4750e with black line (1-1/2" wide on right)
The drum is scratch ,or there is a paper jammed .
SOURCE: when the fax machine prints
1-take out cartridge and clean the inside , there may be toner on the lamps
2-take a look at the drum(shiny cylinder) does it have black rings?? replace
3-does it have scratches or grooves? replace
3-could be the lamps (long thin strip of lights) some of the lights are bad
SOURCE: brother 4750e fax machine
1- check the small stip of glass and see if it has toner,
check the maintenance section of the manual (it's free, just register)
http://www.retrevo.com/support/Brother-4750-Fax-Machines-manual/id/19095ci557/t/2/
SOURCE: when i make a copy on my brother 4750e i get the plain black copy
Your scanner block has a loose connection or it is bad.
Have you tried both drum and toner supplies? cause it sounds like a drum fault, if you have tried a new drum and toner, and it is doing it when printing internal reports, receiving fax's and copying then you have a tecnical issue to do with charge and this would likely render machine unecomical to repair (unless you can find a bad contact with drum on machine). If it receives faxs clearly but copys black then it is different issue (ie optics).
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