600_UM_GB-03-03-09:600_UM_GB_15-01-09 3/3/2009 2:56 PM Page 77

20Troubleshooting ..................

Before contacting the aftersales department, you are advised to follow the instructions below:

You are advised to switch off the telephone from time to time to optimise its performance.

You are advised to fully charge ( ) the battery for optimal operation.

Avoid storing large amounts of data in your telephone as this may affect the performance of your telephone.

and carry out the following checks:

My mobile phone will not switch on

Press until the screen comes on

Check the battery charge level

Check the battery contacts, remove and reinstall your battery, then turn your telephone back on

My phone has not responded for several minutes

Press the key

Remove the battery and re-insert it, then switch the phone back on

My screen is difficult to read

Clean your screen

Use your mobile phone in accordance with the recommended conditions of use

My mobile phone turns off by itself

Check that your keypad is locked when you are not using your mobile phone

Check the battery charge level

My mobile phone has a low level of autonomy

Make sure you respected the complete charge timing (minimum 3 hours)

After a partial charge, the battery level indicator may not be exact.Wait for at least 20 minutes after removing the charger to obtain an exact indication

My mobile phone will not charge properly

Make sure that your battery is not completely discharged; the battery charge indicator can take several minutes and may be accompanied by a quiet whistling sound

Make sure charging is carried out under normal conditions (0°C +40°C)

Make sure your battery is inserted. It must be inserted before plugging in the charger

Make sure you are using an Alcatel battery and charger

When abroad, check that the electrical current is compatible

My mobile phone will not connect to a network

Try connecting in another location

Verify the network coverage with your operator

Check with your operator that your SIM card is valid

Try selecting the available network(s) manually (see page 47)

Try connecting at a later time if the network is overloaded

SIM card error

Make sure the SIM card has been correctly inserted (see page 16)

Verify with your operator that your SIM card is 3V compatible; the old 5V SIM cards cannot be used

Make sure the chip on your SIM card is not damaged or scratched

Unable to make outgoing calls

Make sure you have dialled a valid number and press the key

For international calls, check the country and area codes

Make sure your mobile phone is connected to a network, and that the network is not overloaded or unavailable

Check your subscription status with your operator (credit, SIM card valid, etc.)

Make sure you have not barred outgoing calls (see page 29)

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Alcatel Carrier Internetworking Solutions OT-600 manual 20Troubleshooting, Carry out the following checks