Dell Official R820 Manual for System Maintenance and Troubleshooting

CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

1.Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet and peripherals.

2.Open the system.

3.If applicable, remove the cooling shroud or the processor expansion module.

4.Locate the battery socket.

CAUTION: To avoid damage to the battery connector, you must firmly support the connector while installing or removing a battery.

5.To remove the battery, support the battery connector by pressing down firmly on the positive side of the connector.

Figure 55. Replacing the System Battery

1. positive side of battery connector 2. system battery

3.negative side of battery connector

6.Lift the battery out of the securing tabs at the negative side of the connector.

7.To install a new system battery, support the battery connector by pressing down firmly on the positive side of the connector.

8.Hold the battery with the "+" facing up and slide it under the securing tabs at the positive side of the connector.

9.Press the battery straight down into the connector until it snaps into place.

10.Install either the cooling shroud or the processor expansion module, as applicable.

11.Close the system.

12.Reconnect the system to the electrical outlet and turn the system on, including any attached peripherals

13.Enter the System Setup to confirm that the battery is operating properly.

14.Enter the correct time and date in the System Setup Time and Date fields.

15.Exit the System Setup.

Hard-Drive Backplane

Depending on your configuration, your system supports the following backplanes:

2.5inch (x16) SAS/SATA backplane or

2.5inch (x8) SAS/SATA backplane or

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