Lenovo System x3550 M3 Problem Determination And Service Manual page 474

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The server comes standard with five dual-motor hot-swap cooling fans.
Attention: To ensure proper operation, replace a failed hot-swap fan within 30 seconds.
To install an additional hot-swap fan, complete the following steps:
Step 1.
Read the safety information that begins on
417.
Step 2.
Remove the cover (see
Step 3.
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.
Fan 6
Figure 70. Fan installation
Step 4.
Orient the fan over the fan slot in the fan assembly bracket so that the fan connector aligns with the
connector on the system board.
System x3550 M3Problem Determination and Service Guide
462
"Safety" on page v
"Removing the cover" on page
Fan tabs
Fan 3
Fan 2
Fan 1
Fan (side view)
and
"Installation guidelines" on page
424).
Fan connector on
the system board
Fan connector

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