Mitsubishi Electronics M342i ユーザーズマニュアル

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71- 
Appendix
   
Trouble shooting
PROBLEM
POSSIBLE
 
CAUSE
 
AND
  
SOLUTION
Phone does not 
switch on
Check that the battery is fully charged and correctly connected to the phone.
No flashing 
battery icon 
whilst
charging
There may be no mains supply. Try a different electrical socket.
The AC/DC charger may be faulty. Return to your dealer and try substitution with 
another Mitsubishi Electric adaptor. If faulty, contact your dealer.
Short standby 
and talk times
Cell broadcast is permanently on, using more battery power. 
Phone is in a poor signal area and therefore always on full power. 
Incorrect charging and discharging. Always charge and discharge your battery 
fully.
The battery is wearing out. Replace the battery.
Impossible to dial 
numbers
Keypad lock is on (
 appears). Press 
Unlock and  to turn the keypad lock off.
Impossible to 
make or receive a 
call
Check that at least one signal strength bar (
) is displayed. Try a stronger signal 
strength area.
If no network name is displayed, check registration and area coverage with your 
service/network provider and check that the SIM is correctly inserted. 
Call barring option is on. Deactivate it (see page 67). Call cost limit is reached 
(see page 29).
Stored telephone 
numbers cannot 
be recalled 
Fixed Dialled Number or Call Barring features are activated. Deactivate feature. 
(see page 67).
The mobile is on 
but nothing is 
displayed.
Display contrast is too low. Reset contrast (see page 61).
Battery icon 
 
not flashing 1-2-
3-4-5 during 
charging
May indicate a charge or battery problem. Disconnect the charger. Reconnect and 
try again. 
May also indicate that the battery is fully recharged and does not require any 
further charging.
No charge 
symbol when 
connecting the 
charger
If the battery is totally empty the battery level symbol may not be displayed at once 
when connecting the battery charger. Moreover the mobile cannot be turned on. 
Up to 15 minutes may be necessary  to reach the required 4% battery charge to 
turn your mobile on and allow the battery charge symbol to be displayed.
 symbol 
displayed
There is not enough memory to store another e-mail or another MMS. Delete one 
or more of the existing stored messages.
Flashing 
There is not enough memory to store another SMS message. Delete one or more 
of the existing stored messages.