Question about Panasonic PanaFax UF-490 All-In-One Laser Printer

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Replaced Toner faxes are black

The machine bleeped to say that a new toner was required which was bought and replaced but the faxed are totally black, printing quality is awful, what shall I do?

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  • 284 Answers

Try a internal printout function6-4-start-

let me know how that looks. if that looks fine you have a static build up on the scanning glass.

if thats the case. lift the front pannel you will see 2 green plastic arms, pinch those towards each other and lift it wont come completly out, " if you see the toner cartridge you've gone to far" ... tilt the white plastic and wipe down the glass under neith this should fix your problem

Posted on Sep 22, 2008

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Anthony here. Had a similar problem, fax didn't detect the new toner. The photo sensor does not detect the toner en the fax is new. Put a black tape where the toner slots into the sensor en walla it worked. When the copies become faint I know that the toner is low or over.

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Samsung sf-5100 fax toner empty


I have a feeling that it is a re-manufactured or compatible cartridge??
There is a fuse that needs to be replaced on this unit. it blows when the cartridge is installed to reset the machine. If the fuse has not been replaced or is defective the machine will not recognize the new unit.

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I have a feeling that it is a re-manufactured or compatible cartridge??
There is a fuse that needs to be replaced on this unit. it blows when the cartridge is installed to reset the machine. If the fuse has not been replaced or is defective the machine will not recognize the new unit.

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1 Answer

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beware of generic toner!
you may need to change out your drum unit
the drum unit may have been contaminated by the staples toner.
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Try to see in the software if there is any reset option for the toner.

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