Silicon Graphics 1400, Maintenance And Upgrade Manual

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Replacing the Backup Battery
53
Replacing the Backup Battery
The lithium battery on the baseboard (Figure 2-11) powers the real-time clock (RTC) for
three to four years in the absence of power. When the battery weakens, it loses voltage
and the system settings stored in CMOS RAM in the RTC (e.g., the date and time) may
be wrong. Contact your customer service representative or dealer for a list of approved
devices.
Warning:
If the system has been running, any installed processor and heat sink on
the processor board(s) will be hot. To avoid the possibility of a burn, be careful when
removing or installing baseboard components that are located near processors.
The following warning and translations of the warning are required by specific certifying
agencies to be printed immediately adjacent to the procedure for removing the RTC.
Warning:
There is a danger of explosion if the battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by the equipment
manufacturer. Discard used batteries according to manufacturer’s instructions.