Docomo SO-51A, Инструкция по эксплуатации

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225 Appendix
Appendix
･
When you have a vague idea of
malfunctioning, you can perform diagnosis
by yourself.
For details, refer to NTT DOCOMO website.
･
Check if the software update is necessary for
the terminal. If necessary, perform the
software update (P.234).
･ When checking the following items not to
improve the state, contact the phone number
given in "Repairs (Inquiries/Request)" on the
last page of this manual (in Japanese only) or
DOCOMO-specified repair office.
■
Power supply
Troubleshooting
Troubleshooting
Phenomenon Cause and handling
Cannot power on
the terminal ･ Check if the battery is not run
out.
→ P.39
Screen is frozen,
or the power
cannot be turned
off ･ When the screen freezes or the
power cannot be turned off,
press and hold the power key
and the volume up key at the
same time for approximately 9
seconds and release it when the
terminal vibrates 3 times
consecutively to force stop.
* Note that some data and
settings may be erased due to
force-quit operation.