Installing System Components
79
Replacing a Cooling Fan
CAUTION:
Many repairs may only be done by a certified service technician. You
should only perform troubleshooting and simple repairs as authorized in your
product documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized by Dell is not covered
by your warranty. Read and follow the safety instructions that came with the
product.
1
Align the fan module so that the side with the power cable faces toward
the back of the system.
2
Slide the fan module into the fan assembly until the fan is fully seated.
See Figure 3-10 and Figure 3-10.
3
Connect the fan’s power cable to the power connector on the system
board.
4
Route the power cable through the guides on the chassis.
NOTE:
First replace the internal hard-drive carrier and bay. See "Installing an
Internal Hard Drive Bay" on page 75.
5
Replace the cooling shroud. See "Installing the Cooling Shroud" on
page 69.
6
Close the system. See "Closing the System" on page 67.
7
Reconnect the system to its electrical outlet and turn the system on,
including any attached peripherals.
Power Supplies
Your system supports 750 W/1100 W redundant power supplies.
NOTE:
The maximum output power (shown in watts) is listed on the
power supply label.
If two power supplies are installed, the second power supply provides
hot-swappable, power redundancy. In redundant mode, the system
distributes the power load across both power supplies to maximize efficiency.
When a power supply is removed with the system powered on, the full power
load is picked up by the remaining power supply.
CAUTION:
To ensure proper system cooling, the power supply blank must
be installed in the PS2 bay in a redundant configuration. See "Installing the Power
Supply Blank" on page 82.
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