1
RTC battery holder
2
RTC battery
2. With your fingernail, gently pry the retaining clip away from the top edge of the battery.
Attention:
Do not pry the clip too roughly; the clip bends if you apply too much force.
3. Grasp the sides of the battery with your thumb and forefinger, lift the battery out of the holder, and set it aside.
Installing an RTC battery
You must follow a specific sequence of steps to install a RTC battery.
Steps
1. If you are not already grounded, properly ground yourself.
2. Remove the replacement battery from the antistatic shipping bag.
3. Locate the empty battery holder in the controller module.
4. Align the negative side of the battery away from the NVMEM battery, as shown in the previous illustration and insert the
battery into the holder by tilting the battery at an angle and pushing down.
5. Visually inspect the battery to make sure that it is completely installed into the holder and that the polarity is correct.
Reinstalling the controller module and booting the system
After you replace a component within the controller module, you must reinstall the controller module in the system chassis and
boot it to a state where you can run diagnostic tests on the replaced component.
About this task
For HA pairs , the sequence in which you reinstall the controller module is especially important because it attempts to reboot as
soon as you completely seat it in the chassis.
Steps
1. Close the controller module by sliding the cover over it until the release button clicks to confirm the closure.
2. Align the end of the controller module with the opening in the chassis, and then gently push the controller module halfway
into the system.
Note:
Do not completely insert the controller module in the chassis until instructed to do so.
3. Reinstall the cable management arms and recable the controller module, as needed.
If you removed the media converters (SFPs), remember to reinstall them if you are using fiber optic cables.
4. Complete the reinstall of the controller module:
6
Replacing an RTC battery
