User's Manual

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sht21e17.fm
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Appendix
Before you assume that the product is malfunctioning,
check the following:
Troubleshooting
Trouble Detail
Cannot turn on the
power.
• Is the internal battery charged?
(zP. 50)
• Did you hold f down? (zP.54)
Cannot charge the
battery.
• Is the power plug of the specified
charger (sold separately) securely
plugged into an outlet or a cigarette
lighter socket? (zP.50)
• Are the desktop holder, charger
terminal, etc. clean? (zP.24)
Cannot operate/The
screen does not
respond/Cannot turn
off the power.
• Turn the power off forcibly by
pressing f and d simultaneously
for at least 12 seconds. Turn it on
after a while. (zP.55)
Cannot operate the
keys/touch panel.
• Turn off the power and then turn it
on.
• Is the power turned on? (zP.54)
Battery usage time is
short.
• Make sure you do not often use the
product in places where (out of
service area) is displayed. (zP.64)
• Make sure the internal battery does
not approach the end of its service
life. (zP.19)
• Is the internal battery charged
enough? (zP.50)
• Suspend the functions not being
used. (zP.65)
Cannot operate the
touch panel as
intended.
• Make sure you are not operating
with hands wearing gloves etc.
• Make sure you are not operating
with the tip of a fingernail or with
foreign object between the screen
and your fingers.
• Check the proper operation of touch
panel. (zP. 57)
• Make sure you are not operating
with the stylus pen.
If the touch panel does not respond
to the stylus pen, operate with your
fingers.
• Restart the product. (zP.55)
Screen response is
slow when you tap on
the screen/press the
keys.
• Screen response may be slowed
down when a large amount of data
is stored in the product or being
transmitted between the main unit
and a microSD memory card.
Trouble Detail
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