Sharp OZ-770 - Manual (Page 73)

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Troubleshooting
Troubleshooting
Refer to the list below for solutions when the unit is not functioning properly before contacting your local SHARP dealer:
Problem
The display remains blank after pressing .
Poor display contrast.
The Organizer is turned on, but pressing Keys has no effect.
ìNot enough memoryî displayed.
The alarm does not sound at the set time.
The Backlight does not function.
Solution
* Adjust the LCD contrast (see p.10)
* Install new batteries (see p.6)
Adjust the LCD contrast (see p.10)
Reset the Organizer (see p.65)
The Organizerís memory is full or nearly full. Delete unnecessary
data. (You can check the amount of free memory using CHECK
MEMORY in the Second Main Menu, see p.21).
Enable alarms in the SOUND application in the Second Main Menu.
(see p.10)
During data transfer, PC-LINK mode, the Backlight does not work,
if Battery Alert appears, replace batteries. (see P.66).