Nortel Networks BCM1000 - Manual (Page 291)

Chapter 20 Replacing data cards and processing hardware 291
Installation and Maintenance Guide
Installing the new battery
This section describes how to replace the clock/calendar battery into the base unit.
1 Ensure you have the positive side of the battery facing up when you position it in the socket.
2 Push down until the battery snaps into the socket.
3 Replace the power supply, if you removed it.
4 Replace the cover.
5 Restore the unit to operation. Refer to “Restarting the system” on page 240 .
Warning: There is a danger of explosion if you do not replace the battery correctly.
You must replace the battery with a CR2032, 3v Maxell coin cell battery.
The positive side of the battery must face up.
The battery must sit securely in the battery socket.