3. Gently push the battery away from the holder, rotate it away from the holder, and then lift it out of the
holder.
Note the polarity of the battery as you remove it from the holder. The battery is marked with
a plus sign and must be positioned in the holder correctly. A plus sign near the holder tells
you how the battery should be positioned.
4. Remove the replacement battery from the antistatic shipping bag.
5. Locate the empty battery holder in the controller module.
6. Note the polarity of the RTC battery, and then insert it into the holder by tilting the battery at an angle and
pushing down.
7. Visually inspect the battery to make sure that it is completely installed into the holder and that the polarity is
correct.
Step 4: Reinstall the controller module and setting time/date after RTC battery replacement
After you replace a component within the controller module, you must reinstall the controller module in the
system chassis, reset the time and date on the controller, and then boot it.
1. If you have not already done so, close the air duct or controller module cover.
421