57
TROUBLESHOOTING
Use the following list for troubleshooting when the unit is not functioning properly.
If the problem persists, contact your local SHARP dealer.
Problem
Solution
The display remains blank after
you press the
ON
key.
•
The display may be too light. Adjust the
contrast (see page 19) or the backlight
(see page 20).
•
The main batteries may be depleted.
Replace the main batteries (HC-
4000/HC-4100) or recharge the battery
pack (HC-4500) (see page 21 and 26).
The display is completely black.
(HC-4000/HC-4100)
•
The display may be too dark. Adjust the
contrast (see page 19).
The display appears dim or too
bright. (HC-4500)
•
Color displays may appears dim when
viewed outdoors on a bright sunny day.
Use it at a shady place where sunlight
does not fall directly onto the display.
•
Adjust the backlight (see page 20).
The display does not respond to
tapping with the stylus.
•
Reset the unit (see page 29).
•
The display may be damaged. Contact
your dealer for servicing.
The stylus does not work properly
•
Recalibrate the stylus. Please refer to the
Microsoft H/PC Companion.
The unit stop responding.
•
Reset the unit (see page 29).
The unit turns off even after you
press the
ON
key.
•
The main batteries may be depleted.
Replace the main batteries (HC-
4000/HC-4100) or recharge the battery
pack (HC-4500) (see page 21 and 26).
You forgot the password
•
Reset the unit completely
(see page 29).
You cannot remove the main
battery holder
•
Make sure the battery replacement
switch is set to REPLACE MAIN
BATTERIES (see page 22).
You cannot open the backup
battery cover.
•
Make sure the battery replacement
switch is set to REPLACE BACKUP
BATTERY (see page 24).
The main battery is low message
appears.
•
Replace the main batteries (HC-
4000/HC-4100) or recharge the battery
pack (HC-4500) (see page 21 and 26).
Problem
Solution