Epson Apex 20020 - Manual (Page 21)

Removing the Diskette Drive Protector Card
A protective piece of cardboard occupies the slot of the
diskette drive in your computer. This card is inserted at the
factory to protect the read/write heads in the drive.
Be sure to remove the card from the diskette drive before you
turn on the computer. Turn the diskette drive latch up until it
is horizontal and carefully pull out the card.
Save the protector card and reinsert it whenever you move the
computer. If you don’t plan to use your computer for a week or
more, reinsert the card to help prevent dust from entering the
disk drive.
Setting Up Your System 1-3