07-20-2014 10:58 AM
The cutter is enabled and hitting form feed will cut the paper.
07-21-2014 06:56 AM
You might need to do a proper physical inspection of related scan axis components (belt, encoder, carriage etc.) and lubricate. Try to perform manual check of the cutter engagement and paper cut function.
Please check if the device actually attempts to perform paper cut after job has ended (verify this with the help of control panel message after a job when cutter actually cuts paper and when it does not cut).
Keep the device firmware upgraded to latest revision.
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(Although I am an HP employee, I am speaking for myself and not for HP)