Streak when sending a a fax it will put a streak down on one side of the paper when I receive a fax no poblems

Paper inright hand side tray, at top , Must not put paper in Printing unit at the front. To send Fax , use Fax mode, enter receiver Fax phone Number , Press any Black ot Colour button to send

Let me see if I got this right.

The received fax is clean but when you send one out it has a black streak on it.
Cool! So far so good.
Makes sense because for sending, the fax scans the original document and parts of the scanning area could be dirty and so on. Therefore a black streak may appear.
The same black streak would also appear when you make a copy, because the original document must also be scanned.
Logical!

However for receiving faxes, the machine uses the internal memory and the print engine only, and the same applies to printing the transaction report, which comes from inside via the print engine.
The scanner has no rol in either situation.

Now I'm lost!

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Try cleaning the rollers with rubbing alcohol using a good quality paper towels, I find there is a buildup on the rollers causing streaking on the paper. If that fails the print head must be suspect.

clean the scanner, it may have white out or some other obstruction blocking it

The glass scanner window (narrow strip of glass) needs cleaning. One "spot" of dirt will appear as a streak on the receiving end.
If you "copy" a document you can check the streak and see how effective your cleaning is.

just check there wilkl bi mention face up or down .if not mention no problem just make a copy by putting face up and one copy by putting it face down.one time u will receive white copy and one time u will receive print on paper .when u will receive print check this is face up or down .after confirm just send fax

needs a new toner cartridge probably but the fuser rollers may be damaged as well usually if the lines are indented into the paper that means its the fuser roller if they just appear strait down the page then its the toner cartridge

Face down. Blank side up. It doesn't matter which edge you send first.

your machine most likely has toner spills in it.
if you send faxes face side down follow these instructions ;
1- take out toner
2- look for thin glass strip on bottom inside the machine
3-wipe clean

if you make copies side up then do the same except look for glass strip on the upper side of machine

streaks are caused either by the toner, drum, lamp or fuser.

If you make a copy and it does not show a streak then it was done by the person sending the fax. BUT, check this,

open door and take out toner cartridge. look for a thin glass that is on the bottom of the machine and wipe it. Toner spills will cause a black streak.