Sony XDBK-105 Operating Instructions Manual page 12

Checking the Option Key
Installed
You can check the option key installed in the
XDS.
1
Display the maintenance menu and
select maintenance menu item
M23:OPTION KEY under M2:
SERVICE SUPPORT. (See step 2 in
"Installing the Option Key.")
2
Select "STATUS."
The option key name ("XDBK-105") and its
status ("ena") are displayed.
If no option key is installed, the following
screen appears.
12 Checking the Option Key Installed