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Re: 7750 toner refill
You will need to install a genuine cartridge. the printer will continue to say the toner is low while you have the refill in the machine and there is nothing you can do about it other than replace it with a new cartridge.
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Did you replace the toner cartridge or attempped to refill it if refill the cartridge have chips on them when they are done tell the printer they are done, refill is not messing with the chip So get a new one OEM not 3rd party
On the back of the 7750 toner there is a metal piece you can push in near the end that goes in to the machine first, this will tell the printer that the toner you put in has not been installed until now. I would not suggest doing this unless the toner is full and is using geniune xerox 7750 toner.. If you refill it with generic or non-7750 toner it can damage the machine and will void any warrenty you may have left on the machine.
If you switch machines with the 7750 toner the machine will not know how much toner is remaining in that toner. Xerox changed this method on the 7760 to use a toner chip to fix this.
Hope this helps, thanks
You cannot use Lexmark toner cartridges in IBM models and vice-versa because the toner carts have a smartchip that identifies the toner to the printer. IBM printers expect to see IBM toners and Lexmark machines expect to see Lexmark toners. If you put the wrong cartridge in you will get '32' Unsupported print cartridge error.
Some refillers may swap the smartchip when they refill cartridges and this would be the only reason why you may have seen it done before.. IS your current toner a refilled one? It's technically possible to make an IBM printer into a Lexmark printer to accept Lexmark toners by replacing the System Board... but why would you bother doing that...just use the right toner.
I think I know what the problem is... When you refill these toner cartridges you need to reset the "toner empty" cog wheel. For instructions on how to do this follw this link: http://www.proprint.co.uk/brother_hl4040.htm It has pictures and explains how to reset the cartridge Good luck, Billy.
I don't suggest refilling cartridges as I work on printers every day but seems to me that you have done everything correctly the only thing I think you have done is either filled with incorrect toner thus giving a incorrect reading or when moving gear you have dislodged the pin that activates the reset procedure.
1 Could be toner on the contacts (inside the printer) that mate with the contacts on the cartrdige.
2 Are you sure they are 510 toners and not 500 ones ?? 510 toners have a chip that identifies the cartridge (Colour, Capacity) and maintains a count of the pages printed.
500 toners have a reset fuse that resets the toner counter in the printer, and a resitor that identifies the capacity
3 Are they new cartridges, remanufactured, or 'home refiled'.
if either of the later two, were the chips replaced ? - if not the cartridge still thinks it has printed its full life of pages.