SOURCE: Risograph GR 1700 E02
check the Paper Feed Tray.. is there something in the way? does it go up and down? if it is all the way up or down maybe it got pushed off the rail?
SOURCE: How to solve Error Code E02 always appear
Error Code E02 means paper jam.
Solution
1. Unplug the power cord and USB cable.
2. Lift the printer upside down, then shake the printer.
3. This is done, to remove foreign objects, which get into the roller.
Causes of damage
Solution

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