1. Open the controller air duct on the top of the controller.
a. Insert your fingers in the recesses at the far ends of the air duct.
b. Lift the air duct and rotate it upward as far as it will go.
2. Locate the RTC battery under the air duct.
RTC battery and housing
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. Note the polarity of the RTC battery, and then insert it into the holder by tilting the battery at an angle and
pushing down.
6. 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
Reinstall the controller module and reboot it.
1. Ensure the air duct is completely closed by rotating it down as far as it will go.
It must lie flush against the controller module sheet metal.
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.
Do not completely insert the controller module in the chassis until instructed to do so.
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