Panasonic KX-TDA5920 Installation/Upgrade Manual page 16

4.1 Procedure
KX-TDA100/KX-TDA200
6.
Turn on the power to the PBX.
7.
While the RUN indicator is flashing, slide the System Initialize Switch back to the "NORMAL" position.
Initialization may take about 1 min to 3 min. When initialization is complete, the RUN indicator will stop
flashing and turn on.
8.
Turn off the power to the PBX again.
9.
Remove the SD Memory Card from the PBX, and set the lock switch for read/write access.
10.
Turn on the power to the PBX.
The previous version's system data file will be copied from the SD Memory Card to the PBX.
The Hybrid IP-PBX has been restored to the previous version. Please note that the data listed in Section
3.2 Data Reset After Upgrade cannot be restored.
16 SD Memory Card Installation/Upgrade Guide
Reset Button
RESET
SYSTEM
INITIALIZE
NORMAL
System Initialize Switch
Document Version 2008-11