Make sure you have:

1.The option card

2.The option card manual

3.A Phillips screwdriver.

Powering Down

First, turn the power switch OFF. Then unplug the power cord from the wall outlet and turn the main unit around so that the back is facing you.

WARNING: Never open the QX-10 while it is plugged into a wall outlet!

Removing the Option Cards Cover

Unscrew the Phillips screws on each side of the option access slots. The lift-off cover is completely detachable. To remove it, tilt it up and away from you. There are two hingelike protrusions on

28