Panasonic KX-TCD540NZM Service Manual page 26

For Service Hint:
* : If the current 4-digit Base Unit PIN is forgotten, follow the procedures below.
1. If Base Unit and Handset are not linked with, first, follow the steps in
Handset Registration to a Base Unit
).
2. Follow the steps above in
) of PIN Code. At step 3, enter
will able to enter new Base Unit PIN.
6.5.2. Handset
(
Base Unit (
26
Cordless
, and you