Dell PowerEdge SC 430 - Manual (Page 44)

Cooling Fans
The system contains two cooling fans, one for the processor and one for the card cage. Each contains a shroud that is part of the cooling fan assembly. The
fan and shroud are replaced as a unit.
Replacing the Cooling Fans
1. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See " Opening the System " in "Troubleshooting Your System."
3. Disconnect the fan's power cable from the system board. See Figure A -3 .
4. Depending on which fan you are removing:
a. If you are removing the smaller card cage fan, press the single release tab that attaches the fan to the chassis and slide the fan toward the back
panel. The fan can then be lifted out.
b. If you are removing the larger processor cooling fan, you must first remove the processor heat sink and shroud assembly. See " Removing the
Processor ." Once the heat sink and shroud assembly are removed, press the release tab that attaches the processor cooling fan to the chassis
and slide the fan toward the back panel. The fan can then be lifted out.
5. Align the securing tabs on the replacement fan with the mounting holes in the system chassis.
6. Slide the fan toward the front panel until it snaps into place.
7. If you replaced the larger processor cooling fan, replace the processor heat sink and shroud. See " Replacing the Processor ."
8. Reconnect the fan power cables to the system board.
9. Close the system. See " Closing the System " in "Troubleshooting Your System."
System Battery
A coin-cell battery maintains system configuration, date, and time information. The battery can last several years.
To determine whether you need to replace the battery, see " Troubleshooting the System Battery " in "Troubleshooting Your System."
You can operate your system without a battery; however, without a battery, the configuration information is erased if the system is turned off or unplugged
from the electrical outlet. In this case, you must enter the System Setup program and reset the configuration options.
Replacing the Battery
1. Enter the System Setup program and write down your setup settings. See "Using the System Setup Program" in your User's Guide.
2. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
3. Open the system. See " Opening the System " in "Troubleshooting Your System.""
4. Locate the battery on the system board. See Figure A -3 for the battery location.
NOTE: If you are removing the larger processor cooling fan, you must first remove the processor heat sink and shroud assembly. See " Removing the
Processor " and Figure 5 -2 .
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system.
Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the
computer and protecting against electrostatic discharge.
CAUTION: A new battery can explode if it is incorrectly installed. Replace the battery only with the same or equivalent type recommended by the
manufacturer. Discard used batteries according to the manufacturer's instructions.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system.
Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the
computer and protecting against electrostatic discharge.
NOTICE: If you use a blunt, nonconductive object to depress the tab next to the battery, be careful not to touch the system board with the object.
Ensure that the object is inserted between the battery and the tab before you attempt to depress the tab. Do not pry out the battery. You may
damage the system board by prying off the socket or by breaking circuit traces on the system board.