Changing The Legacy I/O Board Battery - HP server rx4610 Service Manual

Chapter 6

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
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."
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.
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.
Replacing Parts
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