I have an OKI C9400 Colour Printer. [br]
This worked perfectly when new, but It's been unused for some time,
Now: It displays this error message: ''cyan toner sensor error''
It will still print, BUT NOW the image has gone very bright, eg: the colours are washed out. The cartridges are the original ones supplied with the printer, but it's only printed a few hundred copies.
There are voltages I can check, but as the printer drums are sensitive to light, it would be useful to know if it is possible to check the voltages with all 4 of the printer drums removed.
Many thanks.