You don't have already a service manual for this copier ?
You don't have already a service manual for this copier ?
Update: the tech was here today, checked all the gears and Mechanics and changed Cyan developer. Now he is sure it's a voltage problem.
Because the machine prints a rough surface blue on whole sheet.
According to him, he never encountered this problem, and does not know how to fix it.
Any ideas?
Check developer bias contact as on attachment pictures.
Charge HVPS.jpg
That other Forum wont let me load photos. It's no wonder more people use this one.
You need to check voltages on HVPS Developer Bias Pwb = item no. 16
Measure the bias voltage, on electronic board, for all three colours and compare.
If you have voltages there then you can change the item no 15 = Charge HVPS.
image.jpgHere is a picture to show the rough/sand like cyan print over the sheet. Despite the fact that the printed image is missing cyan. Sometimes the prints are clean but cyan is always missing.
You dont think there is something else much simpler to think of that could be causing this. Before that we start looking into electronic boards?
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