Replacing The Real Time Clock (Rtc) Battery - Digital Equipment Digital Server 3220 Series System Reference Manual

Server Components

Replacing the Real Time Clock (RTC) Battery

Your server's battery runs the server clock and retains any setup information when it
is turned off. If your server ever fails to retain the correct date, time, or configuration
settings when it is turned on, you need to replace your server's RTC battery. Also,
make sure you replace the battery with either a DIGITAL part number 12-41474-05,
Toshiba (P/N CR2032), or equivalent 3 V dc Lithium battery. This part can be
obtained through your DIGITAL service provider.
To replace the battery/RTC, perform the following:
1. If you have not already done so, record server configuration settings using
the BIOS Setup utility.
2. Turn off your server.
3. Disconnect external devices (if any), ac power, and monitor power.
4. For the DIGITAL Server 3220 only, unlock and open the front bezel, loosen
the two thumbscrews, and then remove the side panel (see Figure 3-2).
5. For the DIGITAL Server 3220R only:
a. Remove the front bezel (see Figure 3-4).
b. Disconnect all cables from the rear of the server.
c. Disconnect the cable management arm (see Figure 3-5).
d. Remove the two screws securing the server to the rack and then
slide it out (see Figure 3-4).
e. Remove the top cover (see Figure 3-6).
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WARNING:
There is a danger of battery explosion if a lithium
battery is incorrectly replaced. To prevent damage to your
server, be sure the + side faces up when installing a new
battery.
Depending on your locality, your server's battery might be
considered hazardous waste. Make sure you follow any state
or local statute to properly dispose of the old battery.