The following procedure describes how to replace the Real Time Clock (RTC) Battery on an X8440 server module.
Power off and remove the blade from the chassis.
Remove the blade cover.
See Remove Blade Cover.
Locate the RTC battery in the right corner of the blade.
The number 1 in the figure below highlights the location of the RTC battery on the X8440 blade.
To remove the battery from the vertical socket, follow these steps:
Using your fingers, unlatch the battery from the socket by twisting the battery away from the socket spring.
Lift the battery up and out of the socket.
Locate the replacement RTC battery and insert it into the socket with the positive side (+) of the battery facing the back side of the socket.