This section describes how to install the following system components:
Cooling shroud
System battery
Fan assembly
Power supply
Expansion cards
Riser board
System memory
Processor
System Board Components
When installing and replacing system board components, use Figure 6-1 to locate the components.
Figure 6-1. System Board Components and Connectors
Cooling Shroud
The cooling shroud covers the processor and system battery. The shroud also directs air flow to the expansion cards and system memory.
Removing the Cooling Shroud
CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Open the system. See "Opening the System" in Troubleshooting Your System."
While grasping the cooling shroud, press the release latch and rotate away from the fan
assembly. See Figure 6-2.
Remove the cooling shroud.
Figure 6-2. Installing and Removing the Cooling Shroud
Installing the Cooling Shroud
Insert the two tabs of the cooling shroud into the back panel. See Figure 6-2.
Rotate the cooling shroud down until the release latch snaps into place securing the shroud to
the fan assembly.
Close the system. See "Closing the System" in "Troubleshooting Your System."
System Battery
Replacing the System Battery
CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Enter the System Setup program and, if possible, make a printed copy of the System Setup
screens.
See "Using the System Setup Program" in the User's Guide.
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.
Grasp the battery socket release tab with your fingers and gently pull out away from the
battery to remove the battery from the battery socket. See Figure 6-3.
Place the new battery in the battery socket as shown in Figure 6-3.
NOTE: The side of the battery labeled "+" must face toward the open side of the battery socket.
Figure 6-3. Replacing the Battery
Press the battery into the socket until it snaps into place.
The fan assembly contains three fans and provides cooling for the processor, memory modules, and expansion cards.
Removing the Fan Assembly
CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Open the system. See "Opening the System" in Troubleshooting Your System."
Close the system. See "Closing the System" in "Troubleshooting Your System."
Power Supply
The system supports a single nonredundant power supply.
Removing the Power Supply
CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Open the system. See "Opening the System" in Troubleshooting Your System."
Disconnect the following power supply cables:
P3 from the hard drive cable harness
P2 from system board connector CN2
P1 from system board connector CN1
Loosen the captive screw at the front of the power supply that secures the power supply to the
chassis. See Figure 6-5.
Slide the power supply forward and lift straight up to remove the power supply from the
chassis.
Figure 6-5. Installing and Removing the Power Supply
Installing the Power Supply
Lower the power supply into the chassis and slide it backward until the four pins on the power
supply are engaged into the securing brackets.
Tighten the captive screw at the front of the power supply that secures the power supply to
the chassis.
Connect the following power supply cables:
P3 to the hard drive cable harness
P2 to the system board connector CN2
P1 to the system board connector CN3
Close the system. See "Closing the System" in "Troubleshooting Your System."
Expansion Cards
The system supports up to two PCI expansion cards, which are installed in connectors on a riser board. The upper slot supports PCI 32-bit, 33-MHz (5.0 V) expansion cards and the lower slot supports PCI-X 64-bit, 66-MHz (3.3 V) expansion cards. See Figure A-4. If you are installing a remote access controller card, it must be installed in the upper slot of the riser board. Install most RAID controller cards and SCSI controllers in the lower slot.
Installing an Expansion Card
CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Open the system. See "Opening the System" in Troubleshooting Your System."
Remove the expansion-card retainer adjacent to the PCI slots. See Figure 6-6.
Remove the filler bracket on the slot you will be using.
NOTE: Keep this bracket if 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.
Insert the expansion card firmly into the expansion-card connector on the riser board until
the card is fully seated, being careful not to remove the riser board from the system board.
NOTE: Ensure that the expansion-card bracket is also inserted into the securing slot on the
chassis's back panel.
Replace the expansion-card retainer. See Figure 6-6.
Connect any internal or external cable(s) to the expansion card.
Close the system. See "Closing the System" in "Troubleshooting Your System."
Figure 6-6. Installing and Removing Expansion Cards
Removing an Expansion Card
CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Open the system. See "Opening the System" in Troubleshooting Your System."
Disconnect any internal or external cable(s) that are connected to the expansion card.
Remove the expansion-card retainer adjacent to the PCI slots. See Figure 6-6.
Grasp the expansion card and carefully pull it away from the riser-board connector.
If you are removing a SCSI controller card, disconnect the cables from the card that connects to the SCSI hard drives.
If you are permanently removing the card, replace the metal filler bracket over 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.
Replace the expansion-card retainer.
Close the system. See "Closing the System" in "Troubleshooting Your System."
Riser Board
The riser board provides two expansion-card slots.
Removing the Riser Board
CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Open the system. See "Opening the System" in Troubleshooting Your System."
Loosen the two captive screws that secure the riser board to the system board. See Figure 6-7.
From the back of the system, slide the riser board to the right to disconnect the riser board
from the system board, and lift the riser board out of the chassis.
Figure 6-7. Installing and Removing the Riser Board
Installing the Riser Board
CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Slide the riser board onto the system board. See Figure 6-7.
Tighten the two captive screws that secure the riser board to the system board. See Figure 6-7.
Close the system. See "Closing the System" in Troubleshooting Your System."
System Memory
The four memory module sockets are located on the system board adjacent to the power supply and can accommodate from 256 MB to 4 GB of unbuffered ECC PC-3200 (DDR400) memory. See Figure 6-1 for the location of the memory module sockets.
You can upgrade the system memory by installing combinations of 256-, 512-MB, and 1-GB unbuffered memory modules. If you receive an error message stating that maximum memory has been exceeded, see "Indicators, Messages, and Codes" for more information. You can purchase memory upgrade kits from Dell.
NOTE: The memory modules must be PC-3200 compliant.
Memory Module Installation Guidelines
The memory module sockets are arranged in banks (1 and 2) on two channels (A and B). The memory module banks must be installed in identical pairs.
The memory module banks are identified as follows:
Bank 1: DIMM1_A and DIMM1_B
Bank 2: DIMM2_A and DIMM2_B
For example, if socket DIMM1_A contains a 256-MB memory module, then socket DIMM1_B must contain a 256-MB memory module.
Table 6-1 shows examples of different memory configurations.
If only one memory module is installed, it must be installed in the DIMM1_A socket.
A bank must contain identical memory modules.
Install the memory modules in bank 1 (DIMM1_x) before installing memory modules in bank 2 (DIMM2_x).
Installing three memory modules is not supported.
Table 6-1. Sample Memory Module Configurations
Total Memory
DIMM1_A
DIMM2_A
DIMM1_B
DIMM2_B
256 MB
256 MB
None
None
None
512 MB
256 MB
None
256 MB
None
1 GB
256 MB
256 MB
256 MB
256 MB
1 GB
512 MB
None
512 MB
None
1.5 GB
512 MB
256 MB
512 MB
256 MB
2 GB
1 GB
None
1 GB
None
2 GB
512 MB
512 MB
512 MB
512 MB
3 GB
1 GB
512 MB
1 GB
512 MB
4 GB
1 GB
1 GB
1 GB
1 GB
Installing Memory Modules
Open the system. See "Opening the System" in Troubleshooting Your System."
Press the ejectors on the memory module socket down and out, as shown in Figure 6-8, to
allow the memory module to be inserted into the socket.
Align the memory module's edge connector with the alignment keys of the memory module
socket, and insert the memory module in the socket.
NOTE: The memory module socket has two alignment keys that allow you to install the memory
module in the socket in only one way.
Press down on the memory module with your thumbs while pulling up on the ejectors with
your index fingers to lock the memory module into the socket.
When the memory module is properly seated in the socket, the ejectors on the memory module socket align with the ejectors on the other sockets that have memory modules installed.
Repeat step 2 through step 5 of this procedure to install the remaining memory modules. See
Table 6-1 for installing the total desired memory.
Close the system. See "Closing the System" in "Troubleshooting Your System."
(Optional) Press <F2> to enter the System Setup program, and check the System Memory
setting on the main System Setup screen.
The system should have already changed the value to reflect the newly installed memory.
If the value is incorrect, one or more of the memory modules may not be installed properly.
Repeat step 1 through step 8 of this procedure, checking to ensure that the memory modules
are firmly seated in their sockets.
Figure 6-8. Installing and Removing a Memory Module
Removing Memory Modules
CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Open the system. See "Opening the System" in Troubleshooting Your System."
Press down and out on the ejectors on each end of the socket until the memory module pops
out of the socket. See Figure 6-8.
Close the system. See "Closing the System" in "Troubleshooting Your System."
Processor
It is possible to upgrade your processor to take advantage of future options in speed and functionality. Each processor and its associated internal cache memory are contained in a pin grid array (PGA) package that is installed in a ZIF socket on the system board.
The following items are included in the processor upgrade kit:
Processor
Heat sink
Replacing the Processor
CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Open the system. See "Opening the System" in Troubleshooting Your System."
NOTICE: The processor and heat sink can become extremely hot. Be sure the processor has had
sufficient time to cool before handling.
Pushing down with one hand on the securing clip's rubber-coated tab, use the other hand to
slide the latch on the securing clip away from the heat-sink post to release the securing clip.
See Figure 6-9.
Remove the securing clip.
NOTICE: Never remove the heat sink from a processor unless you intend to remove the processor. The
heat sink is necessary to maintain proper thermal conditions.
Repeat step 3 and step 4 to remove the other securing clip.
Figure 6-9. Installing and Removing the Securing Clip
NOTE: When removing the heat sink, the possibility exists that the processor might adhere to the heat
sink and be removed from the socket. It is recommended that you remove the heat sink while the
processor is still warm.
Remove the heat sink.
Gently rotate the heat sink side-to-side before lifting the heat sink from the processor.
If the processor is removed from the socket with the heat sink, twist or slide the processor
off of the heat sink. Do not pry the processor off of the heat sink.
Set the heat sink upside down so as not to contaminate the thermal grease.
Pull the socket-release lever straight up until the processor is released from the socket. See
Figure 6-10.
Lift the processor out of the socket and leave the release lever up so that the socket is ready for
the new processor.
NOTICE: Be careful not to bend any of the pins when removing the processor. Bending the pins can
permanently damage the processor.
Unpack the new processor.
If any of the pins on the processor appear bent, see "Getting Help."
Align the pin-1 corner of the processor with the pin-1 corner of the ZIF socket. See
Figure 6-10.
NOTE: Identifying the pin-1 corners is critical to positioning the processor correctly.
Identify the pin-1 corner of the processor by locating the tiny gold triangle on one corner of the processor. Place this corner in the same corner of the ZIF socket identified by a corresponding triangle.
Install the processor in the socket.
Figure 6-10. Installing and Removing the Processor in the Socket
NOTICE: Positioning the processor incorrectly can permanently damage the processor and the system
when you turn it on. When placing the processor in the socket, be sure that all of the pins on the
processor enter the corresponding holes. Be careful not to bend the pins.
If the release lever on the processor socket is not positioned all the way up, move it to that position.
With the pin-1 corners of the processor and socket aligned, set the processor lightly in the socket, making sure all pins are matched with the correct holes in the socket. Because the system uses a ZIF processor socket, do not use force, which could bend the pins if the processor is misaligned. When the processor is positioned correctly, it drops down into the socket with minimal pressure.
When the processor is fully seated in the socket, rotate the socket release lever back down until it snaps into place, securing the processor.
Install the heat sink.
Using a clean lint-free cloth, remove the existing thermal grease from the heat sink.
NOTE: Use the heat sink that you removed in step 6.
Apply thermal grease evenly to the top of the processor.
Align the holes on both sides of the heat sink with the heat-sink posts on the system
chassis. See Figure 6-9.
Orient the securing clips so that the rubber-coated tabs are toward the back of the chassis.
NOTE: If the securing clips are installed so that the rubber-coated tabs are toward the front of the
system, the cooling shroud cannot be installed correctly.
Lower the end opposite of the rubber-coated tab of each securing clip over the heat-sink post,
and then slide the securing clip toward the heat-sink post until they snap onto the post. See
Figure 6-9.
While holding down the rubber-coated tab with one hand, push the latch on the securing clip
toward the heat-sink post until it locks the clip onto the post.
Close the system. See "Closing the System" in "Troubleshooting Your System."
As the system boots, it detects the presence of the new processor and automatically changes the system configuration information in the System Setup program.
Press <F2> to enter the System Setup program, and check that the processor information
matches the new system configuration.
See your User's Guide for instructions about using the System Setup program.
Run the system diagnostics to verify that the new processor operates correctly.
See "Running the System Diagnostics" for information about running the diagnostics and troubleshooting processor problems.
