1. Contamination of the
pressure roller or heat roller
(Background, Hot off set).
2. Check the claw of the fuser
whether it is unfitted.
After disassembling the fuser, clean
contamination between the heat
roller and the thermostor and
remove the contamination of the
pressure roller.
1. If there is heavy background,
repair it by the background
troubleshooting method.
2. The surface of the heat roller
with IPA or water
3. Check the warp or separation of
the sprint claw and the holder
plate claw, and then manage it.
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