Epson TM-H6000IV-DT Technical Reference Manual page 36

The roll paper cover will not open (the autocutter blade is locked)
The roll paper cover will not open if the auto cutter blade is locked.
Restore the auto cutter blade to its normal position and remove the jammed paper by the following procedure.
1
Turn off the product.
2
Lift up the lever on the left side of the receipt unit cover to open it.
3
Turn the knob of the autocutter blade in the direction of the arrow until you see a pin
in the opening of the frame.
There is a label near the cutter to assist you.
Pin
4
Close the receipt unit cover.
5
Open the roll paper cover.
6
Remove the jammed paper.
7
Turn on the product.
Chapter 2 Printer Functions and Settings
Knob
2
36