Operating instructions

32 Issue 1.0 March, 2006
Replace Fuses of Power Supply
Replace Cover
Replace the cover and install the 4 screws removed earlier.
Preparing the External Battery Backup
The Key Service Unit can have two battery backup devices BBOX1 connected for emergency power when a
power failure takes place.
If you are installing an optional Battery Backup (BBOX1), make certain that there is adequate room for its
installation. Make certain that the Battery Backup is mounted close enough to the Power Supply that the
interconnecting cable between the Battery Backup and the Power Supply can connect.
Do Not Connect the Battery Backup at this time!