Casio SF-5590SY Service Manual & Parts List page 9

To replace the main batteries
Important!
• Do not remove the main batteries from the Digital Diary while the back-up battery is removed.
• Be sure to replace both batteries with two new ones. Do not mix an old battery with a new one.
• Be sure to press the START button after loading main batteries for the first time or if the previous
set of batteries went dead.
• Replace batteries only when low battery power is indicated by failure of the Digital Diary to turn on
when you press the ON key. Do not replace batteries as long as the Digital Diary turns on normally
when you press the ON key.
1. Press OFF to turn power off.
2. Remove the screw that holds the battery compartment cover in place and open the cover.
START
button
3. Remove both old batteries and replace them with new ones.
• Make sure that the positive (+) and negative (–) ends are facing correctly.
4. Replace the battery compartment cover and secure it with its screw.
• Take care that you do not overtighten the screw.
5. Press the START button.
• This causes the message "ARE YOU USING A NEW UNIT FOR THE FIRST TIME (Y/N)?" to
appear. Be sure to press N in response to this message (pressing Y will delete all data in memory).
Next, continue with the procedures in the section title "All-Reset" on page 6.
To replace the back-up battery
Important!
• Do not remove the back-up battery from the Digital Diary while the main batteries are removed.
• Be sure to replace the back-up battery at least once every 5 years. Otherwise, you run the risk of
losing data stored in memory.
1. Press OFF to turn power off.
2. Remove the screw that holds the back-up battery compartment cover in place and open the cover.
START
START
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