Originally Posted by
MunsterTech
hi Guys,
working on one of these wonderful, non logic machines. Initially the customer reported poor colours, replaced the magenta drum and all ok, a few days later, came in for same issue but Magenta was totally blank. Tried a new drum again, but still same, updated firmware, replaced ITB but still no magenta when doing prints or copies. When doing colour mismatch, I could see magenta being produced on the chevrons and patches on the ITB, but when doing a pg10 or copying no magenta? All other colours are fine. I replaced the Magenta hopper and still no magenta. Replaced the laser and bingo, Magenta came back. Forgive me if I am wrong but doesnt Magenta/Yellow share the same laser? Anyway, Magenta is now working and nice and deep in colour, however, I now have a patchy yellow! If I do sky copies and print off 10, about 8 would come out full colour yellow, if i do auto grad, the yellow gradation is very patchy, new drum doesnt make a difference, laser has been replaced.
In the end, it seems that the firmware wasnt taking, and if using the CDS it would still not go to the latest version that was installed it would go back about 10 versions as if never updated. Replaced the DC and Main controllers, but yellow is still very patchy!
Any ideas? sorry no images to attach
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