Its Very Easy To Fix This Issue,Just Follow Few Simple Step and You Solve Your Problem By Your Own,
Read Below Instruction,
1Turn off the label maker before installing the tape.
2Press the part marked as "<<" and lift the cassette cover.
3 Position the tape into the slot. Make sure to feed the end of the tape under the tape guides.
4Check that the lever is up before closing the cover; the cover will not close if the lever is pressed down.
5Close the cassette cover.
6 Press the power key to turn on the device. If using an AC adapter, plug the adapter into the wall then press the power key.
7Type a sample to test if your installation was successful.
Read more: http://www.ehow.com/how_7526530_install-tape-ptouch-label-maker.html#ixzz2pMqUU0oU