Sony P910a - Manual (Page 180)

180 Troubleshooting
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Device lock Phone locked is displayed followed by the prompt
Enter lock code .
Your P910a is locked to prevent unauthorized use.
To unlock the P910a:
• 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 Handsfree (VHF) equipment, make
sure that the following are inserted or connected:
Your P910a 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 P910a does
not flash and no network is displayed there is no
network within range. See ‘Telephone does not
work’ on page 180.
Communication problems
Telephone does
not work • The received signal can be too weak, possibly
because you are being shielded from the signal.
Check your display signal strength indicator.
Move outdoors or up from the ground to obtain a
sufficiently strong signal.
• Make sure the P910a is not set in Flight mode.
• Your P910a might be busy sending or receiving
data or email.
• Check the settings for forwarding or restricting
calls. See ‘Forward calls’ on page 54, ‘Accept
calls’ on page 54 and ‘Restrict calls’ on page 55.
• If Emergency calls only is displayed on the
screen, you are not allowed to use the network
within range. You can, however, usually make an
emergency call using the emergency number.
• If No network is displayed on the screen, you are
in an area that is not covered by a network or the
received signal is too weak.
Cannot hear
incoming call • Increase the ring signal volume.
• Your P910a is set in silent mode.
• Your P910a is set in Flight mode.