Hi Engineers,
I need you to help me understand this so I can give a sufficient solution to my client.
About 4 months ago this Machine started spoiling imaging units. The black IU first had issues with the developer spilling out on prints, then the image started to gray out(fade) along specific areas on the print which appeared to be due to poor charging. The Unit was replaced and the replacement worked well.
then the fading started in Yellow IU and a tech of mine went and solved it(by some miracle according to him.) The client then ran about 600 copies of books of roughly 80-100 pages each and the next thing I knew was that Y,M,C Units were completely spoilt out of the fade effect. They were all replaced and the machine worked well. I've been informed that the Black unit also ended up dead a few days later and was replaced again.
Now the Yellow unit has faded again and I'm suspecting the High Voltage Board though I'm thinking the problem stems from the volume of work this client is doing in a single printing period.
Thanks so much for your help
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