Removing a PSU

Important - If you do not install the replacement PSU at this time, leave the failed PSU in place to ensure proper appliance cooling. This prevents the cooling air from escaping.

1. You must follow the Safety Instructions.

2. Disconnect the power cable from the power source.

3. Open the retention strap that secures the power cable to the PSU.
   

4. Disconnect the DC power connector from the PSU.

5. Disconnect the safety ground wire from the PSU.

6. Remove the hook-and-straps that hold and secure the system cables, if they interfere with PSU removal.

7. Press and hold the release latch on the PSU.

8. Pull the PSU out from the appliance.

Important - The appliance needs one working PSU for the normal operation. When two PSUs are installed, and the appliance is powered on, remove and replace only one PSU at a time.

Important - When only one working PSU is installed, it must be installed in the first PSU bay - see the markings on the appliance cover.