Avision AV50F (FF-0803S) - Manual (Page 103)

1.
You experience repeated document jams and cleaning the
ADF roller did not help.
2. As a guideline, replace the roller after about 100,000
scans. You may check the scan count with the Info tab on
the scanner’s TWAIN user interface.
Disassembly Steps:
1. Press down two latches on the back of the automatic
document feeder to open the rear cover.
2. Move the yellow knob on the roller backward to the end to
release the roller.
7-7