NEC express5800 A2010b User Manual page 184

Chapter 2 Preparations
(2)
Removal of cooling fan
1. Open the top cover of the server.
2. Check the location of cooling fan you are going to replace.
3. Lift the lock levers on both sides of cooling fan to unlock the cooling fan.
4. Pull the cooling fan upward while keeping the condition of Step 3, and remove the fan.
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Important Make sure that the cooling fan LED on the failing fan is lit amber.
Express5800/A1040b, A2040b, A2020b, A2010b User's Guide
1. Installing / Removing Internal Options