User's Manual

170 Troubleshooting
REFERENCE
Troubleshooting
This chapter consists of a selection of suggestions for solving
possible problems with your P900. If this does not help, please
try the Solution Finder on www.SonyEricsson.com/support.
There you can also find other information that can be helpful.
Startup problems
The P900 will
not start
• Handheld phone: recharge or replace the battery.
• Ensure the contacts on the battery and charger are
clean and avoid charging the battery in extreme
temperatures.
• Vehicle Hands-free: check that the P900 is
properly inserted into the holder and check the
fuse in the fuse holder (connected to the battery
cable).
Lock problems
Insert card • Ensure a SIM card is activated and inserted into
your P900. See ‘SIM card’ on page 11.
Blocked SIM
card
If your PIN is entered incorrectly three times in a
row, the SIM card will be blocked. You can
unblock it by using your PUK. See ‘SIM card lock’
on page 35.
Device lock Phone locked is displayed followed by the prompt
Enter lock code .
Your P900 is locked to prevent unauthorized use.
To unlock the P900:
• Enter your device lock code, 0000 by default,
then press or .
Key symbol The keypad is locked to prevent unintentional key
action.
Press followed by to unlock the
keys.
Indicator light
Flashes red This indicates that the battery is running low and
soon needs recharging or replacing with a spare.
• With Vehicle Hands-free (VHF) equipment,
Ensure the following are inserted or connected:
your P900 and its holder, the fuse in the fuse
holder, and/or the external antenna.
Does not flash If the indicator light at the top of your P900 does
not flash and no network is displayed, there is no
network within range. See ‘Phone does not work’
on page 171.