The four memory module connectors on the system board can accommodate from 256 MB to 4 GB of 533-MHz unbuffered ECC DDR II single or dual-rank memory modules. See Figure A-3 for the location of the four memory module connectors.
NOTE: As shown in Figure A-3, memory slots are not in numeric order on the system board. When installing memory, take care to install it in the proper slots according to the configuration guidelines in Table 5-1. Installing memory in the wrong slots will significantly reduce system performance.
Memory Module Upgrade Kits
The system is upgradable to 4 GB by installing combinations of 256-MB, 512-MB, or 1-GB 533-MHz unbuffered ECC DDR II single or dual-rank memory modules. You can purchase memory upgrade kits from Dell.
Memory Module Installation Guidelines
If only one memory module is installed, it must be installed in connector DIMM_1.
If only one memory module is installed in connector DIMM_1, its capacity must be 256 MB.
If more than one memory module is installed, the memory modules must be installed in pairs of matched memory size, speed, and technology.
Memory modules must be installed in ordered pairs in connectors DIMM_1 and DIMM_2, and then DIMM_3 and DIMM_4.
If a processor with a slower front-side bus rating than the memory is installed, the memory will operate at the processor's slower front-side bus speed.
NOTICE: If you remove your original memory modules from the system during a memory upgrade, keep them separate from any new memory modules that you may have, even if you purchased the new memory modules from Dell. Use only unregistered or unbuffered ECC DDR II memory modules.
Table 5-1 illustrates memory configuration guidelines. It is important to follow the slot installation configurations shown here to achieve maximum memory performance.
Table 5-1. Memory Configuration Guidelines
Total Memory
DIMM_1
DIMM_2
DIMM_3
DIMM_4
256 MB
256 MB
none
none
none
512 MB
256 MB
256 MB
none
none
1 GB
256 MB
256 MB
256 MB
256 MB
1 GB
512 MB
512 MB
none
none
1.5 GB
256 MB
256 MB
512 MB
512 MB
2 GB
512 MB
512 MB
512 MB
512 MB
2 GB
1 GB
1 GB
none
none
3 GB
1 GB
1 GB
512 MB
512 MB
4 GB
1 GB
1 GB
1 GB
1 GB
Addressing Memory With 4-GB Configurations (Microsoft® Windows® Operating System Only)
Your system supports a maximum of 4 GB of memory using four 1-GB memory modules. Current operating systems can use a maximum of 4 GB of address space; however, the amount of memory available to the operating system is slightly less than 4 GB.
NOTE: Depending on the type of PCI/PCIe expansion cards that are installed in your system, your system may only support a maximum of 3.4 GB of memory or less.
Integrated PCI devices (such as NICs) and SCSI controllers
PCI expansion cards
At start-up, the BIOS identifies the components that require address space. The BIOS dynamically calculates the amount of reserved address space required. The BIOS then subtracts the reserved address space from 4 GB to determine the amount of usable space.
If the total installed system memory is less than the usable space, all installed system memory is available for use only by the operating system.
If the total installed system memory is equal to or greater than the usable address space, a small portion of installed memory is available for use by the operating system.
Installing a Memory Module
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.
Turn off the system and attached peripherals, and disconnect the system from the electrical
outlet.
Open the system. See "Opening the System" in "Troubleshooting Your System."
Press on the securing clip at each end of the memory module connector. See Figure 5-1.
Align the memory module's edge connector with the alignment key in the connector.
The memory module connector has an alignment key that allows the memory module to be installed in the connector in only one way.
Applying even pressure to both ends of the module, insert the module into the connector and
carefully press the module into place.
Figure 5-1. Installing a Memory Module
Pull up on the securing clips to lock the module into place.
If you insert the module correctly, the securing clips snap into the cutouts at each end of the module.
When the memory module is properly seated in the connector, the securing clips on the memory module socket should align with the securing clips on the other connectors with memory modules installed.
Close the system. See "Closing the System" in "Troubleshooting Your System."
Reconnect the system to the electrical outlet, and turn on the system and attached
peripherals.
The system detects that the new memory does not match the existing configuration information and generates the following message:
The amount of system memory has changed. Strike the F1 key to continue, F2 to run the setup utility
Press <F2> to enter the System Setup program and check the value for Memory Info. See
your User's Guide for detailed information.
The system should have changed the value for Memory Info to reflect the newly installed memory. Verify the new value. If it is correct, skip to step 13.
If the memory value is incorrect, turn off the system and attached peripherals, and disconnect
the system from the electrical outlet.
Open the system. See "Opening the System" in "Troubleshooting Your System."
Ensure that the installed memory modules are seated properly in their connectors, and repeat
step 6 through step 9.
When the Memory Info value is correct, press <Esc> to exit the System Setup program.
Run the system diagnostics to verify that the memory modules are operating properly.
Removing a Memory Module
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.
Turn off the system and attached peripherals, and disconnect the system from the electrical
outlet.
Open the system. See "Opening the System" in "Troubleshooting Your System."
Press out on the securing clip at each end of the memory module connector. See Figure 5-1.
Grasp the memory module and pull it out of the connector.
If the module is difficult to remove, gently move the module back and forth to remove it from the connector.
Microprocessor
To take advantage of future options in speed and functionality, you can upgrade the processor.
The processor and its associated cache memory are contained in a Land Grid Array (LGA) package that is installed in a socket on the system board.
Removing the Processor
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: The processor and heat sink can get very hot during normal operation. Ensure that they have had sufficient time to cool before you touch them.
Turn off the system and attached peripherals, and disconnect the system from the electrical
outlet.
Open the system. See "Opening the System" in "Troubleshooting Your System."
Loosen the two captive screws holding the processor cooling shroud and heat sink in place.
These captive screws are adjacent to the processor cooling fan housing. See Figure 5-2.
Tilt the processor cooling shroud away from the fan housing and lift it out.
Figure 5-2. Removing the Processor Cooling Assembly
Open the processor cover by sliding the release lever from under the release level latch on the
socket. Then, pull the lever back to release the processor. See Figure 5-3.
Figure 5-3. Removing the Processor
NOTICE: The retention latch is pressure-loaded. Ensure that the latch does not quickly open and strike the processor or system board.
Carefully pivot the retention latch away from the processor.
NOTICE: Do not pry the processor from the socket by a single edge. This could result in damage to the processor's delicate connections.
NOTICE: Be careful not to touch or drop any foreign materials on the socket connector pads.
Lift the processor straight up and out of the socket.
Leave the release lever and retention latch in the release position so that the socket is ready for the new processor.
Replacing the Processor
Ensure that the contacts on the bottom of the replacement processor are free from dirt or
other foreign material.
Align the notched edge of the replacement processor with the tab on the processor frame. See
Figure 5-3.
NOTICE: Use caution when removing and installing the processor. Damaging the processor socket connectors can damage the system board.
Carefully set the processor in the processor frame. Ensure that the notched edge of the
processor fits securely over the matching tab on the processor frame. Do not press down on
the processor. If the processor is seated correctly, it should fit snugly in the socket frame. See
Figure 5-3.
Lower the retention latch onto the processor, and then rotate the release lever latch back
toward the system board until it snaps into place.
Clean the thermal grease from the bottom of the heat sink.
NOTICE: Ensure that you apply new thermal grease. Applying new thermal grease is critical to ensuring proper thermal bonding as well as optimal processor operation.
Apply new thermal grease to the top of the processor.
Place the heat sink assembly back onto the heat sink assembly bracket and tilt the heat sink
assembly down on the system board. See Figure 5-2.
Align the two capture screws properly with the system board, then tighten them to secure the
heat sink assembly to the system board.
Close the system. See "Closing the System" in "Troubleshooting Your System."
Reconnect the system to the electrical outlet, and turn on the system and attached
peripherals.
Expansion Cards
The system board can accommodate five expansion cards (two 5-V, half-length 32-bit, 33-MHz PCI, one 2.5-Gb/sec PCIe [x1], one 2.5-Gb/sec PCIe [x4], and one 2.5-Gb/sec PCIe [x8]). See Figure A-3 for the location of the expansion card slots.
NOTE: The PCI slots do not support 3.3-V expansion cards. Only 5-V PCI expansion cards are supported.
Installing an Expansion Card
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.
Turn off the system and attached peripherals, and disconnect the system from the electrical
outlet.
Open the system. See "Opening the System" in "Troubleshooting Your System."
Press the two release tabs on the card retention door inward to open it. See Figure 5-4.
Figure 5-4. Installing an Expansion Card
If you are installing a new card, remove the filler bracket.
NOTE: Keep this bracket in case you need to remove the expansion card. Filler brackets must be installed over empty expansion-card slots to maintain Federal Communications Commission (FCC) certification of the system. The brackets also keep dust and dirt out of the system and aid in proper cooling and airflow inside the system.
Prepare the card for installation.
See the documentation that came with the card for information on configuring the card, making internal connections, or otherwise customizing it for your system.
NOTE: Some NICs automatically start the system when they are connected to a network.
Place the card-edge connector in the expansion-card connector and press down firmly. Ensure
that the card is fully seated in the slot and all cards and filler brackets are flush with the
alignment bar.
Close the card retention door to secure the card(s) in the system.
NOTICE: Do not route card cables over or behind the cards. Cables routed over the cards can prevent the system cover from closing properly or cause damage to the equipment.
Connect any cables that should be attached to the card.
See the documentation for the card for information about the card's cable connections.
Close the system. See "Closing the System" in "Troubleshooting Your System."
Reconnect the system to the electrical outlet, and turn on the system and attached
peripherals.
Install any device drivers required for the card as described in the documentation for the card.
Removing an Expansion Card
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.
Turn off the system and attached peripherals, and disconnect the system from the electrical
outlet.
Open the system. See "Opening the System" in "Troubleshooting Your System."
Press the two release tabs on the card retention door inward to open it. See Figure 5-4.
If necessary, disconnect any cables from the card.
Grasp the card by its top corners and ease it out of its connector.
If you are removing the card permanently, install a filler bracket in the empty card-slot
opening.
NOTE: Filler brackets must be installed over empty expansion card slots to maintain FCC certification of the system. The brackets also keep dust and dirt out of the system and aid in proper cooling and airflow inside the system.
Close the card retention door to secure the remaining card(s) in the system. See Figure 5-4.
Close the system. See "Closing the System" in "Troubleshooting Your System."
Reconnect the system to the electrical outlet, and turn on the system and attached
peripherals.
Remove the card's device driver from the operating system.
Power Supply
Removing the Power Supply
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.
Turn off the system and attached peripherals, and disconnect the system from the electrical
outlet.
P3 and P5 connectors to the SATA drives (if applicable)
P11 connector to the SCSI drives (if applicable)
P7 connector to the diskette drive (if applicable)
P8 and P9 connectors to the optical and tape drives (if applicable)
NOTE: Note the routing of the DC power cables underneath the tabs in the system frame as you release the tabs and remove the cables from the system board and drives. You must route these cables properly when you replace them to prevent their being pinched or crimped.
Remove the IDE, I/O panel, and SATA cables attached to the routing clamps on the side of
the power supply.
Using a #2 Phillips screwdriver, remove the four Phillips screws that secure the power supply
to the back panel.
Press the power-supply release tab down and slide the power supply toward the front of the
system, then lift it out of the system chassis. See Figure 5-5.
Figure 5-5. Removing the Power Supply and Cooling Fan
Installing the Power Supply
Prepare the new power supply for installation.
Align the power supply mounting holes with the mounting holes on the back panel.
Slide the power supply toward the back panel until it snaps into place over the power-supply
release tab.
Using a #2 Phillips screwdriver, install the four Phillips screws that secure the power supply to
the back panel.
Reconnect the following power-supply cables:
P1 and P2 connector to the system board
P3 and P5 connectors to the SATA drives (if applicable)
P11 connector to the SCSI drives (if applicable)
P7 connector to the diskette drive (if applicable)
P8 and P9 connectors to the optical and tape drives (if applicable)
Close the system. See "Closing the System" in "Troubleshooting Your System."
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.
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.
Replacing the Cooling Fans
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.
Turn off the system and attached peripherals, and disconnect the system from the electrical
outlet.
Open the system. See "Opening the System" in "Troubleshooting Your System."
Disconnect the fan's power cable from the system board. See Figure A-3.
Depending on which fan you are removing:
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.
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.
Align the securing tabs on the replacement fan with the mounting holes in the system chassis.
Slide the fan toward the front panel until it snaps into place.
If you replaced the larger processor cooling fan, replace the processor heat sink and shroud.
See "Replacing the Processor."
Reconnect the fan power cables to the system board.
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.
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.
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.
Replacing the Battery
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.
Enter the System Setup program and write down your setup settings. See "Using the System
Setup Program" in your User's Guide.
Turn off the system and attached peripherals, and disconnect the system from the electrical
outlet.
Open the system. See "Opening the System" in "Troubleshooting Your System.""
Locate the battery on the system board. See Figure A-3 for the battery location.
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.
Remove the battery by pressing on the tab. See Figure 5-6.
Figure 5-6. Replacing the Battery
Install the new battery with the side labeled "+" facing up, and press down until it snaps into
place.
Close the system. See "Closing the System" in "Troubleshooting Your System."
Reconnect the system to the electrical outlet, and turn on the system and attached
peripherals.
Enter the System Setup program to confirm that the battery operates properly.
From the main screen, select System Time to enter the correct time and date.
Also, re-enter any system configuration information that is no longer displayed on the System Setup screens, and then exit the System Setup program.
To test the newly installed battery, turn off the system and disconnect it from electrical power
for at least an hour.
After an hour, reconnect the system to a power source and turn it on.
Enter the System Setup program. If the time and date are still incorrect, see "Getting Help."
Properly dispose of the old battery. For more information, see your Product Information Guide.