Had plenty of problems with the developer not seating, but once you've seen it a few times it's always easy to identify by the color fading more on the trailing edge of the image.
Had quite a few toner pumps fail in the field - hate those little buggers.
In your case, it sounds like this was a machine moved to the shop for recon - if the machine was transported with the toner cartridges in it for any distance, I guarantee toner will clog in the transport tubes. Sometimes you can clear it with a vacuum, other times it's more painful... annother example of why engineers should be arrested and forced to work on their own products.
For the alignment error: Check the entire length of the transfer belt - it's amazing how a tiny mark in exactly the wrong place can affect these machines. Another thing to check is the upper roller the belt rides on - the ID sensors can read a dirty roller through the belt. Last, the ID sensors with isopropanol or denatured alcohol - these sensors sit right below the fuser, and oil and volatiles from the toner evaporate and can condense on them. Barely can see it in visible light, but these sensors are infared, and the deposits can be nearly opaque.
Had quite a few toner pumps fail in the field - hate those little buggers.
In your case, it sounds like this was a machine moved to the shop for recon - if the machine was transported with the toner cartridges in it for any distance, I guarantee toner will clog in the transport tubes. Sometimes you can clear it with a vacuum, other times it's more painful... annother example of why engineers should be arrested and forced to work on their own products.
For the alignment error: Check the entire length of the transfer belt - it's amazing how a tiny mark in exactly the wrong place can affect these machines. Another thing to check is the upper roller the belt rides on - the ID sensors can read a dirty roller through the belt. Last, the ID sensors with isopropanol or denatured alcohol - these sensors sit right below the fuser, and oil and volatiles from the toner evaporate and can condense on them. Barely can see it in visible light, but these sensors are infared, and the deposits can be nearly opaque.
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