Operation Manual

2. Discard the old battery, if present, and install the new battery

with the + sign on top.

3. Close the battery compartment cover with the help of a coin,

rotating it clockwise until it stops, making sure that the rubber

ring is in place.

Note: battery installation should be made with extra care. The

rubber ring is critical for proper performance. The operator is

responsible for installing the battery and rubber ring properly

behind the battery compartment cover.

All of the information stored in the GFX is kept when replacing

the battery.