4Ensure that the faulty fan is fully seated in the fan bracket and attached to the power connector. See "System Fans" on page 82.

NOTE: Wait 30 seconds for the system to recognize the fan and determine whether it is working properly.

5If the problem is not resolved, install a new fan. See "System Fans" on page 82.

If the replacement fan is working properly, close the system. See "Opening and Closing the System" on page 70.

If the replacement fan does not operate, see "Getting Help" on page 175.

Troubleshooting System Memory

Problem

Faulty memory module.

Faulty system board.

Front-panel status LCD indicates a problem with system memory.

Action

CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the computer and protecting against electrostatic discharge.

1If the system is operational, run the appropriate online diagnostic test. See "Using Server Administrator Diagnostics" on page 161.

If diagnostics indicates a fault, follow the corrective actions provided by the diagnostic program. If the problem is not resolved or if the system is not operational, continue to the next step.

2Turn off the system and attached peripherals, unplug the system from the power source and press the power button, and then reconnect the system to power.

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Troubleshooting Your System

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Dell R805 owner manual Troubleshooting System Memory