Sony CMD-Z7 Operating Instructions Manual page 60

Problem
Difficult to hear
the other party
Phones loses
network
SIM error
SIM card not
registered
Not able to
receive calls
Battery Charging
indicator does not
appear
60 GB
Possible Causes
–––
Weak signal
Damaged SIM card
Network does not recognize
the SIM card
Call barring set
Divert set
Battery overdischarged
Possible Remedies
Adjust earpiece volume, and reduce noise
around you (see page 20).
Reconnection, or connection to another
operator is automatic. Switching phone off and
on may accelerate this.
Please contact your service provider.
Please contact your service provider.
Check incoming call barring settings (see page
39).
Check call divert settings (see page 43).
Charge the battery a full charging cycle (up to
approx. 3 hours) for the indicator to appear.