Brother PT-2420PC Service Manual page 55

(7) Check the cassette sensor according to the following instructions:
Open the cassette cover, remove the tape cassette, and press five sensor switches one by
one. Each time one of them is pressed, the related number of the Cassette sensor shown in
the Results area will change to "+."
If all of those five sensor switches are pressed, the cassette sensor check will complete and
the display will automatically change to the following:
Note: If the cassette sensor check will not finish even after you press all of those five
sensor switches, then the cassette sensor may be defective. Click the Stop the
cassette sensor check button to quit the check and then click the Finish checking
and exit button to abort the test program.
(8) Open the cassette cover and load a 24-mm tape cassette.
(9) Click the Feed cut test button.
The PT-2420PC will feed the tape and changes the display as shown on the next page.
4