Troubleshooting - Sony Ericsson FOMA SO905iCS Manual

Troubleshooting

First, check if the software update is necessary for the FOMA terminal. If necessary,
perform the software update (P.456).
Trouble
Cannot power on the FOMA terminal.
(The FOMA terminal cannot be used.)
The FOMA terminal cannot be
used
The warning tone sounds and
does not stop even when you
press the Power key, and the
FOMA terminal is powered off.
The busy tone sounds and the
call is not connected, even if
you dial up.
" " is displayed and the busy
tone sounds.
Cannot place a call even if you
press the keypad.
The dark display appears and
cannot operate anything.
is displayed and cannot
operate anything.
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.
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.
The mail and alar m tones
sound but the ring tone for an
incoming call does not sound.
The mail tone sounds but there
is no incoming mail.
444
 Check if the battery pack is attached properly (P.39).
 Check if the battery pack is not run out (P.42).
 Check if the Lock key is set (P.140).
 The battery is running out. Charge the battery (P.41).
 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).
 Check if you are outside of the service area or in a location
with weak radio wave condition (P.30).
 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).
 Check if the FOMA terminal is powered on (P.43).
 Check if the Lock key is set (P.140).
 The Lock key is set. Cancel the Lock key and retry the
operation (P.140).
 Check if the Power saver mode is set (P.122).
 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).
 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).
 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).
Cause and Remedy