Xerox phaser 7750

[kyocera dave]

I have error code 9-391. Any ideas anybody? Service manual please would help.

[JustManuals]

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Paul@justmanuals.com

[PoonKing5000]

Remove and Reinstall the Corresponding Toner Cartridge
Errors 9-390 through 9-393 are caused by the Toner Cartridge not installing properly into the printer. Try reseating the corresponding Toner Cartridge. Refer to Replacing / Installing the Toner Cartridge for help with reseating.

Error:

9-390 = Black Toner Cartridge
9-391 = Cyan Toner Cartridge
9-392 = Magenta Toner Cartridge
9-393 = Yellow Toner Cartridge

[xcopytech]

do you maybe use dc 1632/2240/3535 toners?
toner cartdridges for dc1632/2240/3535 are different.