Lenovo x3650 M4 BD 5466 Installation And Service Manual page 190

Figure 103. Rear fan removal
Step 7. If you are instructed to return the fan, follow all packaging instructions, and use any packaging
materials for shipping that are supplied to you.
Replacing a rear fan
Use this information to replace a rear fan.
For proper cooling, the server requires that all fans in the system be operating at all times.
Attention: To ensure proper server operation, if a fan fails, replace the fan immediately.
See "System-board internal connectors" on page 23 for the locations of the fan cable connectors.
Read the safety information that begins on page "Safety" on page v and "Installation guidelines" on page 30
To install or replace a rear fan, complete the following steps
1. Touch the static-protective package that contains the new fan to any unpainted metal surface on the
server. Then, remove the new fan from the package.
2. Orient the fan as the following illustration.
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Lenovo System x3650 M4 BDInstallation and Service Guide