Panasonic EB-GD75 - Manual (Page 71)

Verification
Failure
On changing the phone lock code, verification of the
new code is incorrect - retry changing the lock code
with correct verification
Incorrect Lock
Code
Disabling or enabling the lock code has failed due to
incorrect entry of the lock code - re-enter lock code
Incorrect PIN /
PIN2 / PUK /
PUK2
The entered code is incorrect - re-enter code
correctly
Auto Redial List
Full
Redial list of unsuccessfully dialled numbers is full -
switch the phone off and then on again
62
Trouble Shooting