Sony Ericsson FOMA SO905iCS, Manual

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444
Appendix/Exter
nal De
vices/T
roub
leshooting
Troubleshooting
First, check if the software update is necessary for the FOMA terminal. If necessary,
perform the software update (P.456).
Trouble Cause and Remedy
Cannot power on the FOMA terminal.
(The FOMA terminal cannot be used.)

Check if the battery pack is attached properly (P.39).

Check if the battery pack is not run out (P.42).
The FOMA terminal cannot be
used

Check if the Lock key is set (P.140).
The warning tone sounds and
does not stop even when you
press the Power key, and the
FOMA terminal is powered off.

The battery is running out. Charge the battery (P.41).
The busy tone sounds and the
call is not connected, even if
you dial up.

Check if “ ” appears (P.30).

Check if you enter the area code (P.51).

Check if you dial up in a hurry without hearing the ringing tone
(P.51).
“ ” is displayed and the busy
tone sounds.

Check if you are outside of the service area or in a location
with weak radio wave condition (P.30).
Cannot place a call even if you
press the keypad.

Check if the Self mode is set (P.137).

Check if the Key dial lock is set (P.139).

Check if the Lock key is set (P.140).
The dark display appears and
cannot operate anything.

Check if the FOMA terminal is powered on (P.43).
 Check if the Lock key is set (P.140).
is displayed and cannot
operate anything.

The Lock key is set. Cancel the Lock key and retry the
operation (P.140).
T h e s e t s t a n d - b y d i s p l a y
does not appear and the dark
display appears.  Check if the Power saver mode is set (P.122).
Text is displayed in Japanese.

Check if the Select language is set to [Japanese] (P.128).
Cannot receive a call or the
ring tone does not sound.

Check if the Public mode (Drive mode) is set (P.69).
 Check if the Ring volume is set to [OFF] (P.109).

Check if the Manner mode is set (P.116).
 Check if the Self mode is set (P.137).

Check if the Accept/Reject call is set (P.143).
 Check if the Denied no ID is set (P.144).

Check if the Set ring start time is set (P.145).
 Check if the Reject unknown is set (P.146).

Check if the ring time of the Voice Mail/Call Forwarding Service
is set to 0 seconds (P.392, 393).

Check if the Caller ID Request is set (P.395).
 Check if the Mova terminal is enabled for the Dual Network
Service (P.395).
The mail and alar m tones
sound but the ring tone for an
incoming call does not sound.

Check if the Ring volume is set to [OFF] (P.109).

Check if a longer interval (such as 99 sec) is set at [Start time]
of the Set ring start time. Set it to a shorter interval (P.145).
The mail tone sounds but there
is no incoming mail.  Check if the Tone/Vibrate notice of the Voice Mail Service is
set to [ON]. If it is ON, you are notified of the increase in the
number of record messages by the mail tone (P.392).