We have a MX-7040 that will not allow the color function to be used nor does it even recognize that the color toners are removed when we take them out.
We have updated firmware and cloned it from another 7040 that was functioning normally. We have also board swapped most of PC Board from a parts machine nothing changes. We have made changes in 26-50 to the same value as a functioning machine still no change.
Anything you can think of will be appreciated .
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