Garmin GTN 625 Pilot's Manual page 396

Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
13-10
3. Touch the Lock Activation key if this is for the initial
subscription or a change in the subscription. Touch the OK
key to continue the operation.
Figure 13-13 Lock Activation
Garmin GTN 625/635/650 Pilot's Guide 190-01004-03 Rev. K