Replacing the chassis fan and fan duct (Models 723 and E23 only)
Note: Chassis fans are not present in all Models 723 and E23.
To remove the chassis fan:
1. Follow the steps in “Removing the pullout tray” on page 37 to slide the pullout
tray halfway out of the unit frame.
2. Carefully disconnect the fan connector (A in Figure 29) from the system board.
3. Push down on the duct lock tab (A in Figure 30 on page 43) and slide the
chassis fan duct (B) towards the rear of the system. Its upper tab and lower
tabs will slide out of the slots on the pullout tray sidewall, which lets you pull it
from the openings in the slots.
Figure 29. Disconnecting the chassis fan
42 SurePOS 700-723/743/783/784 Hardware Service Guide
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