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3. TO REPLACE THE BATTERY
A) To replace the main batteries
Before replacing the main batteries, note the following precautions.
•Do not remove the back-up battery from the SF Unit while main batteries are removed.
• Be sure to replace both batteries at the same time, and do not use an old battery with a new
one.
1. Remove the screw that hold the battery compartment cover in
place.
2. Remove the battery compartment cover by sliding it in the
direction indicated by the arrow in the illustration.
3. Slide the main battery holder in the direction indicated by the
arrow.
4. Remove both old batteries and replace with two new ones.
• Use two new batteries. Wipe the surfaces of the batteries with a
soft, dry cloth. Make sure that the positive (+) sides of the
batteries are facing up (so you can view the positive sides as the
batteries lie in the battery compartment).
5. Replace the battery holder.
6. Replace the battery compartment cover and fasten it in place
using the screw.
B) To replace the back-up battery
Before replacing the back-up battery, note the following precautions:
• Do not remove the main batteries from the SF Unit while back-up battery is removed.
• Be sure to replace the back-up battery at least once a year.
1. Remove the screw that hold the battery compartment cover in
place.
2. Remove the battery compartment cover by sliding it in the
direction indicated by the arrow in the illustration.
3. First , remove this sticker from the back-up battery holder.
4. After removing this sticker, take the screw off that secures the
back-up battery holder in place, and then remove the battery
holder.
5. Remove the old battery and replace it with a new one.
• Wipe the surfaces of the battery with a soft, dry cloth.
Make sure that the positive (+) side of the battery is facing up (so
you can view the positive side as the battery lies in the battery
compartment.)
6. Replace the back-up battery holder and fasten it in place using
the screw, and replace the sticker over the battery holder.
7. Replace the battery compartment cover and fasten it in place
using the screw.
