Tell me how to change a roll of tape for the radio shack calculator ec 3021.

Hi Jackson - Try these instructions from a similar RS model, with the understanding that it might at some point make no sense because they are not alike as I was hoping. There doesn't seem to be an EC 3021 manual available anywhere on the planet 8^).


INSTALLING THE PAPER ROLL
1. Remove the printer cover by pushing it in the direction of the arrow.
2. Install the paper holders by inserting their hooks into the slots on the calculator's back housing.
3. Insert the knob on each paper holder into the ends of the paper roll. The edge of the paper should feed from underneath the paper roll.
4. Insert the edge of the paper firmly into the slot underneath the tab.
5. Set P/NP/OFF to P or NP, then press UP ARROW so the paper feeds through the calculator.
6. Replace the printer cover.

Hope that gave you the answer or at least a place to start.

Regards,

Mikeywaf