I
NTRODUCTION
C
ONTROLLER
MEMORY
BATTERY
BACKUP
6
AlphaXpress 8731 Sign Installation and Maintenance Manual (pn 1508610601 rev. A)
Controller memory battery backup
In the event of a power loss, a lithium battery provides power to the sign controller board(s).
Note:
The backup battery provides only enough power to operate the sign’s controller memory, not the sign’s
LED displays.
3V lithium backup battery
One 3V lithium battery is located on the sign controller board(s).
Figure 1.
A 3V lithium battery is located on the sign controller.
WARNING!
Danger of explosion if battery is incorrectly replaced. Replace only with the same or
equivalent type recommended by the manufacturer. Dispose of used batteries according to the
manufacturer’s instructions.
3V lithium battery (Panasonic
CR2032 or equivalent)