This started with a string of other codes which led me to the image control board having a blown fuse (icp 1). Replaced the fuse which gets me to failing color registration.
Problem is that the code is not a problem with color registration, its because the black is always on which throws off the color reg.
By always on I mean the black is always outputting no matter what color is printing. If I run test pattern 53 with yellow only, I get the yellow test pattern but the whole sheet is also has a grey background on the whole sheet.
So the black being present is what is throwing the color reg off not a sensor or the belt.
Problem seems to be in the image processing board. Put 2 different boards in the machine and got the same results but when I put one of those boards in a working machine I get grey backgrounds even when black is not supposed to print. My guess would be that there is a short somewhere causing damage to the image processing board but I am at a lost to where.
Anyone have any thoughts?
Problem is that the code is not a problem with color registration, its because the black is always on which throws off the color reg.
By always on I mean the black is always outputting no matter what color is printing. If I run test pattern 53 with yellow only, I get the yellow test pattern but the whole sheet is also has a grey background on the whole sheet.
So the black being present is what is throwing the color reg off not a sensor or the belt.
Problem seems to be in the image processing board. Put 2 different boards in the machine and got the same results but when I put one of those boards in a working machine I get grey backgrounds even when black is not supposed to print. My guess would be that there is a short somewhere causing damage to the image processing board but I am at a lost to where.
Anyone have any thoughts?
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