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Chapter 17 Technical Reference
Operation
Possible Causes
1. Battery power is low.
2. Exposure of the PV Unit to some
external condition is interfering with
proper operation.
3. The touch screen is damaged.
Problem: Nothing happens when you tap the screen.
Recommended Actions
1. Replace batteries (page 21).
2. Remove the batteries from the battery
compartment, and then reload them.
See page 21 for information about
battery replacement.
3. The touch screen must be replaced.
Contact your nearest CASIO dealer
to have the touch screen replaced.
You will be charged for this
replacement.
Possible Cause
Battery power is low.
Recommended Action
Replace batteries (page 21).
Problem: The functions or cursor movement performed does not match the
location where you tap on the screen.
Possible Cause
The touch screen needs to be calibrated.
Recommended Action
Perform the procedure under
“Calibrating the Touch Screen” on page
164.
Problem: Power suddenly turns off or contrast adjustment screen suddenly appears.