Appendix; Troubleshooting - Sony CMD-Z7 Operating Instructions Manual

Appendix

Troubleshooting

Problem Possible Causes
Unable to switch Empty battery
on
Defective battery
The icon Weak signal
appears
Outside GSM coverage area
SIM not valid
Network access not allowed
Call not possible Dialling error
All calls barred
Another SIM inserted
Call barring set
Possible Remedies
Charge the battery (see page 13).
Replace the battery. Note that after several
years, gradual decline is normal.
Move to an open space or nearer to a window.
Check operator coverage map.
Call your service provider.
Try manual network search (see page 37).
Use full national area code. When abroad, use
also international access code to reach home
country.
Check settings (Password is needed to clear).
Check for new restrictions.
Check outgoing call barring settings (see page
39).
59 GB