HP Integrity rx4610 Server - Manual (Page 105)

Chapter 8 Server Management Boards
97
Changing the Legacy I/O Board Battery
The lithium battery on the Legacy I/O board 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 Real Time Clock
(such as the date and time) can be wrong. Contact your customer service
representative or dealer for a list of approved devices.
WARNING There is a danger of explosion if the battery is incorrectly
replaced. Replace the battery only with the same or an
equivalent type recommended by the equipment manufacturer.
Removing the Battery
To remove the battery, complete the following steps:
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Remove the Legacy I/O board as described in “Removing and Installing
the Legacy I/O Board” on page 126.
3. Insert the tip of a small flat-bladed screwdriver or equivalent under the
plastic tab on the snap-on plastic retainer holding the battery on the Legacy
I/O board.
4. Gently push down on the screwdriver to lift the battery.
5. Remove the battery from its socket.
6. Dispose of the battery according to local ordinance.
Installing the Battery
To install a new battery, complete the following steps:
1. Remove the new lithium battery from its package and, being careful to
observe the correct polarity, insert it in the battery socket.
2. Close the plastic tab over the battery.
3. Install the Legacy I/O board as described in “Removing and Installing the
Legacy I/O Board” in this chapter.
4. Close the rear portion of the top chassis cover.