Power Supplies; To Remove The System Fans - DataON DNS-2670 User Manual

2.7 System Fans
Subdividing the SIM board area and the backplane area is a metal cage that holds the system
fans. This server contains 12 system fans which are located inside the chassis. These system
fans maintain the ideal temperature for the SIM boards, backplanes and disk drives.
The sequence of system fans is shown below for your reference:
Reminder
Before you remove or install the system fans, please follow the steps below:
：
Step 1 Make sure all of the SIM nodes are not turned on and the server is not connected to
AC power.
：
Step 2 Remove the chassis cover. To remove the chassis cover, see "0
To remove the chassis cover
：
Step 3 Disconnect all the necessary cables.

2.7.1 To remove the system fans

Loosen the screws that secure the interposer-board assembly support.
Remove the interposer-board assembly support out of the chassis.
Loosen the screws that secure the system fan cage.
Remove the system fan cage out of the chassis along the direction of the arrow.
Figure 2-20 System Fan Sequence
Figure 2-21 Removing the System Fan Cage
Hardware Operations
21