The procedures in this guide require that you remove the cover and work inside the system. While working inside the system, do not attempt to service the system except as explained in this manual and elsewhere in your system documentation. Always follow the instructions closely. Review all of the procedures in the System Information Guide.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
This section provides servicing procedures for components inside the system. Before you start any of the procedures in this section, perform the following tasks:
Read the safety information in the System Information Guide.
Figure 4-1 shows the rack and tower versions of the system. The illustrations in this document depict the tower version of the system lying on its side.
The bezel has a system status indicator. A lock on the bezel restricts access to the power button, diskette drive, CD drive, hard drive(s), power supplies, and the interior of the system. You must open or remove the bezel and remove the system cover to gain access to internal components.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
In Figure 4-4, the covers and bezel are removed to provide an interior view of the system.
Figure 4-4. Inside the System
The system board holds the system's control circuitry and other electronic components. Several hardware options, such as the microprocessors and memory, are installed directly on the system board. The system board can accommodate up to seven PCI or PCI-X expansion cards (two PCI or PCI-X cards at 64-bit/33-133 MHz, four PCI or PCI-X cards at 64-bit/33-100 MHz, and one PCI card at 32-bit/33 MHz).
The peripheral bay provides space for a 3.5-inch diskette drive, a CD drive, and two hard drives.The hard-drive bays provide space for up to five 1-inch SCSI hard drives. The hard drives connect to a controller on the system board or a RAID controller card through the SCSI backplane board. For more information, see "Hard Drives."
The hard-drive bays provide space for up to six 1-inch hard drives. These hard drives are connected to a SCSI host adapter on the system board or on an expansion card, by way of the SCSI backplane board.
The power supply distribution board (PSDB) provides power distribution for the system. One front-loadable power supply slides into connectors mounted on the PSDB to provide power to the system board and internal peripherals. An option for a second hot-pluggable power supply to provide redundant power is available.
For non-SCSI drives such as the diskette drive and CD drive, an interface cable connects the interposer board, attached to the diskette drive and CD drive, to the system board. For SCSI devices, interface cables connect externally accessible SCSI devices and the SCSI backplane board to a SCSI host adapter either on the system board or on an expansion card. For more information, see "Installing a Hard Drive."
During an installation, repair, or troubleshooting procedure, you may be required to change a jumper. For information on the system board jumpers, see "Jumpers and Connectors."
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Disconnect the CD/diskette drive cable from the back of the CD/diskette drive (see
Figure 4-5).
The other end of this cable connects to the system board.
Disconnect any cables from any devices already installed in the peripheral bay.
Loosen the thumbscrew securing the back of the peripheral bay to the chassis.
Grasping the peripheral bay by its top handle with one hand and pressing the front of
the peripheral bay, slide the peripheral bay backward approximately 0.5-inch and lift
up to remove the peripheral bay from the chassis.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Lower the control-panel and its cable into the system.
Connect the control-panel cable to the system board (see Figure 5-3 for location).
Slide the assembly towards the front panel (see Figure 4-6).
Install the retaining screw that secures the control-panel assembly to the front panel
(see Figure 4-6).
The cooling shroud is attached to the back fan assembly and secured to the system board with two thumbscrews.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
The system includes the following hot-pluggable cooling fans:
Two fan assemblies containing two individual fans. One assembly is located near the SCSI backplane board. The other fan assembly is attached to the back of the chassis.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Align the fan assembly with the fan assembly guide on the back of the chassis, and
push down until the fan assembly is firmly seated and the latch is engaged (see
Figure 4-10).
Connect the fan assembly power cable to the back fan connector on the system board
(see Figure 4-10).
The system includes one or two power supplies. If a single power supply is installed, the system must be shut down and the power cables disconnected from the power receptacle. If there are two power supplies installed, the system is in the redundant mode and the faulty power supply can be removed and replaced with the system is powered on.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
NOTICE: The power supplies are hot-pluggable. The system requires one power supply to be
installed for the system to operate normally. The system is in the redundant mode when two
power supplies are installed. Remove and replace only one power supply at a time in a system
that is powered on.
Slide the power supply into the chassis until it snaps into place (see Figure 4-13).
NOTE: After installing a new power supply, allow several seconds for the system to
recognize the power supply and determine whether it is working properly. The power-on
indicator will turn green to signify that the power supply is functioning properly (see
Figure 3-4).
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Disconnect power cable connector P17 from the system board connector POWER
connector (see Figure 4-14).
Disconnect power cable connector P18 from the system board connector GROUND
connector (see Figure 4-14).
Disconnect the PDM interface cable from the system board PDB connector (see
Figure 4-14).
Figure 4-14. Disconnecting PDM Cables
At the back of the system, remove the four screws securing the PDM to the back panel,
as shown in Figure 4-15.
Figure 4-15. Removing the PDM
Carefully use the pull rings to pull the PDM out of its slot, taking care to guide the
connectors you disconnected from the system board down and away from the system
board.
You can install expansion cards of different operating speeds on the same bus; however, the bus will operate at the slowest operating speed of the cards on that bus. For example, if one card on the bus has an operating speed of 66 MHz and the other card has an operating speed of 100 MHz, the bus will only operate at 66 MHz.
To identify expansion slots, see Figure 5-3. Table 4-1 lists the PCI bus and operating speed for each expansion-card slot.
The system's BIOS scans and numbers PCI buses and devices during startup. Expansion slots are scanned according to the host bus ordering, not by the slot numbers. See Table 4-2 for the order in which the expansion slots and embedded PCI devices are scanned.
An additional factor affects the assignment of PCI bus numbers: an expansion card may have its own PCI bridge chip which requires the assignment of a bus number for the card as well as one for the bridge. A particular expansion card may have two PCI bridge chips which would result in three sequential PCI bus numbers all assigned in the same expansion slot.
If you install expansion cards, you may have some difficulty in directly determining the bus number of a controller on a particular expansion card. However, the PCI bus scan order listed in Table 4-2 can help determine the relative numbering of PCI buses within the expansion slots. For example, a PCI controller residing in expansion slot 3 will never have a lower bus number than one in slot 2 because slot 2 precedes slot 3 in the scan order.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Unpack the expansion card, and prepare it for installation.
For instructions, see the documentation accompanying the card.
Position the expansion card so that the card-edge connector aligns with the
expansion-card connector on the system board.
Insert the card-edge connector firmly into the expansion-card connector until the
card is fully seated.
When the card is seated in the connector, close the expansion-card latch (see
Figure 4-16).
NOTE: SCSI cables connected from an expansion card to the SCSI backplane board
should be routed under the front fan assembly.
Figure 4-16. Installing an Expansion Card
Reconnect all expansion-card cables, including those for the new card.
See the documentation that came with the card for information about its cable connections.
NOTE: If the expansion card you are installing is of a different operating speed as the card
already installed on the same PCI bus, all expansion cards on that bus will operate at the
slower speed.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Grasp the expansion card by its top corners, and carefully remove it from the
expansion-card connector.
If you are removing the card permanently, install a metal filler bracket over the empty
expansion slot opening and close the expansion-card latch.
NOTICE: You must install a filler bracket over an empty expansion slot 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.
To remove the ERA/O card, perform the following steps.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
CAUTION: Your system has two power supply cables. To reduce the risk of electrical shock, a trained service technician must disconnect both power supply cables before servicing the system.
NOTE: For more information about setting up and using an ERA/O, see the remote
access controller documentation provided on the documentation CD that came with
your system.
You must remove the expansion card guide from the system before you remove the
ERA/O card. To remove the expansion card guide, perform the following steps:
Press the middle of the expansion card guide in the direction of the SCSI
backplane (away from the system board) and carefully rotate the expansion card
guide toward the system board until the card guide unhooks from the system
board (see Figure 4-17).
Swing the expansion card guide up.
Figure 4-17. Removing the Expansion Card Guide
To remove the ERA/O card from its connector on the system board, unfasten each of
the support posts from the card.
NOTICE: Do not attempt to disconnect the ERA/O card from the connector on the system board
until you have unfastened the card from each of the four support posts.
Compress the clasp at the top of the support post while carefully lifting up on the
corner of the card to unseat the post (see Figure 4-18).
Repeat step a for each support post.
Lift the ERA/O card straight up and out of the chassis.
If you are not installing a replacement ERA/O card at this time, disconnect the
network cable from the 10-Mbps server management Ethernet connector on the
system back panel.
To install the replacement ERA/O card in the system, perform the following steps:
Position the ERA/O card so that the card connector is directly over the connector
on the system board and the mounting holes on the card line up with the support
posts on the system board.(see Figure 4-19).
Press down until the ERA/O-card connector is fully seated in the connector on the
system board and the support posts are secured in the mounting holes on the card.
Figure 4-19. Installing the ERA/O Card
Reinstall the expansion-card guide:
Holding the expansion-card guide at a 45-five degree angle, insert the two tabs at
the ends of the expansion-card guide base into the slots on the system board (see
Figure 4-17).
Rotate the expansion-card guide down until the clip snaps securely onto the
system board.
The CD/diskette drive assembly attaches to the side of the peripheral bay and connects to the IDE controller on the system board through a single ribbon cable.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Align the replacement CD/diskette drive assembly with the opening in the side of the
peripheral bay.
Press the CD/diskette drive assembly firmly into the side of the peripheral bay and
slide the assembly towards the back of the peripheral bay until the release latch snaps
into place (see Figure 4-20).
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Although SCSI devices are installed in essentially the same way as other devices, their configuration requirements are different. To install and configure an external SCSI device, follow the guidelines in the following subsections.
SCSI interface connectors are keyed for correct insertion. Keying ensures that the pin-1 wire in the cable connects to pin 1 in the connectors on both ends. When you disconnect an interface cable, take care to grasp the cable connector, rather than the cable itself, to avoid stress on the cable.
SCSI logic requires that termination be enabled for the two devices at opposite ends of the SCSI chain and disabled for all devices in between. For internal SCSI devices, termination is configured automatically. For external SCSI devices, you should disable termination on all devices and use terminated cables. See the documentation provided with any optional SCSI device you purchase for information on disabling termination.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Turn off the system, including any attached peripherals, and disconnect the system
from the electrical outlet.
Prepare the tape drive for installation.
Ground yourself by touching an unpainted metal surface on the back of the system, unpack the drive (and controller card, if applicable), and compare the jumper and switch settings with those in the drive documentation. Change any settings necessary for your system's configuration.
Connect the tape drive's interface cable to the external SCSI connector on the
controller card.
Reconnect the system to its electrical outlet and turn the system on, including any
attached peripherals.
Perform a tape backup and verification test with the drive as instructed in the software
documentation that came with the drive.
Before attempting to remove or install a drive while the system is running, see the documentation for the RAID controller card ensure that the system is configured correctly to support hot-pluggable drive removal and insertion.
SCSI hard drives are supplied in special drive carriers that fit in the hard-drive bays.
NOTE: You should only use drives that have been tested and approved by the system
manufacturer for use with the SCSI backplane board.
You may need to use different programs than those provided with the operating system to partition and format hard drives. See "Installing and Configuring SCSI Drivers" in the User's Guide for information and instructions.
NOTICE: Do not turn off or reboot your system while the drive is being formatted. Doing so can
cause a drive failure.
When you format a high-capacity hard drive, allow enough time for the formatting to be completed. Long format times for these drives are normal. For example, an exceptionally large drive can take over an hour to format.
The hard-drive bays provide space for up to six 1-inch SCSI hard drives. The hard drives connect to a controller on the system board or a RAID controller card through the SCSI backplane board.
The system provides several options for hard drive configurations:
If the onboard SCSI controller or the optional integrated RAID controller is used, SCSI cables connect from the system board to the 1 x 6 backplane for both SCSI channels.
If a RAID controller card is installed, the onboard SCSI cables are removed and longer cables are installed from the controller card to SCSI A and/or SCSI B backplane board connector(s).
If a cable is connected to the SCSI B backplane board connector, the SCSI backplane daughter card must be installed to activate the 2 x 3 split configuration. Otherwise, the system will display an error message.
See Figure 5-4 to locate the connectors on the SCSI backplane board.
Take the hard drive offline and wait until the hard-drive indicator codes on the drive
carrier signal that the drive may be removed safely (see Table 3-6).
If the drive has been online, the drive status indicator will blink green twice per second as the drive is powered down. When all indicators are off, the drive is ready for removal.
See your operating system documentation for more information on taking the hard drive offline.
Open the hard-drive carrier handle to release the drive (see Figure 4-22).
Slide the hard drive out until it is free of the drive bay (see Figure 4-22).
If you are permanently removing the hard drive, install a blank insert.
NOTICE: When installing a hard drive, ensure that the adjacent drives are fully installed.
Inserting a hard-drive carrier and attempting to lock its handle next to a partially installed
carrier can damage the partially installed carrier's shield spring and make it unusable.
NOTICE: Not all operating systems support hot-plug drive installation. See the documentation
supplied with your operating system.
Open the hard-drive carrier handle (see Figure 4-22).
NOTICE: Do not insert a hard-drive carrier and attempt to lock its handle next to a partially
installed carrier. Doing so can damage the partially installed carrier's shield spring and make it
unusable. Ensure that the adjacent drive carrier is fully installed.
Insert the hard-drive carrier into the drive bay (see Figure 4-22).
Close the hard-drive carrier handle to lock it in place.
CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Insert the replacement hard drive into the carrier (see Figure 4-23).
Install the four screws that secure the drive to the carrier.
To activate the integrated RAID controller, you must install three components, the RAID controller memory module, hardware key, and battery.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
CAUTION: Replace the battery only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions. See the System Information Guide for additional information.
NOTICE: To avoid possible data loss, back up all data on the hard drives before changing the
mode of operation of the integrated SCSI controller from SCSI to RAID.
Turn off the system, including any attached peripherals, and disconnect the system
from the electrical outlet.
Push the ejectors on the RAID memory module connector down and outward to allow
the memory module to be inserted into the connector (see Figure 4-24).
See Figure 5-3 to locate the RAID memory module connector on the system board.
Align the memory module's edge connector with the alignment keys, and insert the
memory module into the connector (see Figure 4-24).
The memory module connector has two alignment keys that allow the memory module to be installed into the connector in only one way.
NOTE: The RAID controller memory module must be an unbuffered memory module, rated
to run at 100 MHz or faster. Do not substitute registered memory modules such as those
used for system memory.
Press on the memory module with your thumbs while pulling up on the ejectors with
your index fingers to lock the memory module into the connector.
Figure 4-24. Installing the RAID Controller Memory Module
Push the ejectors on the RAID hardware key connector down and outward to allow the
key to be inserted into the connector (see Figure 4-25).
Insert the RAID hardware key into its connector on the system board and secure the
key with the latches on each end of the connector (see Figure 4-25).
See Figure 5-3 to locate the RAID hardware key on the system board.
Press on the hardware key with your thumbs while pulling up on the ejectors with your
index fingers to lock the hardware key into the connector.
Figure 4-25. Installing the RAID Hardware Key
Connect the battery cable to the RAID battery cable connector on the system board.
See Figure 5-3 to locate the RAID battery cable connector on the system board.
Hook the retention tab on the bottom of the battery into the slot in the chassis side
wall, and then snap the battery release clip into place (see Figure 4-26).
Figure 4-26. Removing and Installing the RAID Battery
Reconnect the system to its electrical outlet and turn the system on, including any
attached peripherals.
Enter the System Setup program and verify that the setting for the SCSI controller has
changed to reflect the presence of the RAID hardware (see "Using the System Setup
Program").
Install the RAID software.
See the RAID controller documentation for more information.
Follow these general guidelines when installing a RAID controller card. For specific instructions, see the documentation supplied with the RAID controller card.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
NOTICE: To avoid possible data loss, back up all data on the hard drives before changing the
mode of operation of the integrated SCSI controller from SCSI to RAID.
Unpack the RAID controller card, and prepare it for installation.
For instructions, see the documentation accompanying the card.
Turn off the system, including any attached peripherals, and disconnect the system
from the electrical outlet.
Connect SCSI interface cables supplied with the card to the SCSIA and/or SCSIB
connectors on the SCSI backplane board.
NOTE: Cables can be connected from the RAID controller card to SCSIA and/or SCSIB
backplane board connector(s). A backplane board connector that is not attached to the
RAID controller card will use the integrated SCSI controller or optional integrated RAID
controller.
To identify the connector on the RAID controller card, see documentation for the card. See Figure 5-4 to locate the SCSI controller connectors on the SCSI backplane board.
Route the SCSI cables over the SCSI backplane board to the RAID controller card.
Connect the external SCSI devices to the card's external connector on the system's
back panel.
If you are attaching multiple external SCSI devices, daisy-chain the devices to each other using the cables shipped with each device.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
NOTICE: To avoid possible data loss, back up all data on the hard drives before changing the
SCSI configuration.
Unpack the SCSI backplane board daughter card kit.
Turn off the system, including any attached peripherals, and disconnect the system
from the electrical outlet.
The daughter card fits between the sides of the card guide above the drive bay. To
install the daughter card in the card guide, performing the following steps:
Hold the daughter card by its edges with the component side facing up and the
card connector facing the SCSI backplane board (see Figure 4-27).
Ensure that the retention lever is in the open position.
Position the card in the drive bay so that the notches on the left and right edges of
the card are aligned with the tabs on the card guide above the drive bay.
Lower the card into the card guide.
Close the retention lever to slide the daughter card into the SCSI backplane
connector and lock the card into place (see Figure 4-27).
Figure 4-27. Installing a SCSI Backplane Daughter Card
Reconfigure the SCSI cable connections to the SCSI backplane as necessary to
operate the backplane as a 2 x 3 split backplane:
An integrated RAID controller card is installed by default; no cables are required to use the integrated RAID controller in either the 1 x 5 or 2 x 3 split configuration. See Figure 5-4 to locate the connectors on the SCSI backplane board.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
NOTICE: To avoid possible data loss, back up all data on the hard drives before changing the
SCSI configuration.
Turn off the system, including any attached peripherals, and disconnect the system
from the electrical outlet.
Pull the retention lever to slide the daughter card away from the SCSI backplane
connector (see Figure 4-27).
Lift the card up and away from the tabs on the card guide above the drive bay (see
Figure 4-27).
The system contains up to six 1-inch SCSI hard drives that connect to a controller on the system board or a RAID controller card through the SCSI backplane board.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Turn off the system, including any attached peripherals, and disconnect the system
from the electrical outlet.
Disconnect the front fan assembly power cable from its P1 connector on the front of
the SCSI backplane board.
Disconnect the SCSI_A connector from the SCSI_A connector on the back of the
SCSI backplane board (see Figure 4-28).
Pull the locking bar to the unlock position to remove the flat cable connector
(BKPLN) from the PLANAR CONNECTOR on the back of the SCSI backplane board
(see Figure 4-28).
Disconnect the 14-conductor power cable from the SCSI BACKPLANE POWER
connector on the back of the SCSI backplane board (see Figure 4-28).
Disconnect the 4-conductor power cable from the 1 x 2 SCSI POWER connector on
the back of the SCSI backplane board (see Figure 4-28).
Loosen the thumbscrew that secures the SCSI backplane board in the system (see
Figure 4-28).
Slide the backplane board up about 0.5 inch.
Pull the backplane board off of its grounding tabs.
Lift the backplane board out of the system (see Figure 4-28).
Figure 4-28. Removing and Replacing the SCSI Backplane Board
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Lower the backplane board into the system.
NOTICE: To avoid damage to the system, align the bottom of the backplane board in the
board's mounting grooves before rotating the top of the board onto the grounding tabs (see
Figure 4-28).
Align the backplane board onto the board's grounding tabs.
Insert the SCSI_A cable into the SCSI_A connector on the back of the SCSI
backplane board (see Figure 4-28).
Pull the locking bar to the unlock position to insert the flat cable connector (BKPLN)
into the PLANAR CONNECTOR on the back of the SCSI backplane board; next,
push the locking bar to lock the flat cable into the connector (see Figure 4-28).
Insert the 14-conductor power cable into the SCSI BACKPLANE POWER connector
on the back of the SCSI backplane board (see Figure 4-28).
Insert the 4-conductor power cable into the 1 x 2 POWER connector on the back of
the SCSI backplane board (see Figure 4-28).
Insert the front fan cable into the P1 connector on the front of the SCSI backplane
board.
The six memory module connectors on the system board can accommodate a minimum of 256 MB of registered memory modules. The memory module connectors are arranged in pairs which consist of three banks
(bank 1, bank 2, and bank 3).
The system is upgradable by installing combinations of 128-, 256-, 512-MB, or 1-GB registered DDR SDRAM modules. You can purchase memory upgrade kits as needed.
NOTICE: The memory modules must be PC-2100 compliant.
Starting with the connector nearest the side of the chassis, the memory module connectors are labeled
"DIMM_1A" through "DIMM_3B" (see Figure 4-29). When you install memory modules, follow these guidelines:
You must install memory modules in matched pairs.
Install a pair of memory modules in connector DIMM_1A and DIMM_1B before installing a second pair in connectors
DIMM_2A and DIMM_2B, and so on.
Figure 4-29. Memory Module Connectors
Table 4-3 lists several sample memory configurations based on these guidelines.
CAUTION: Before you perform this procedure, you must turn off the system and disconnect it from its power source. For more information, see the safety instructions in your System Information Guide.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Reconnect the system to its electrical outlet and turn the system on, including any
attached peripherals.
After the system completes the POST routine, it runs a memory test.
The system detects that the new memory does not match the system configuration information, which is stored in NVRAM. The monitor displays an error message that ends with the following words:
Press <F1> to continue; <F2> to enter System Setup
Press <F2> to enter the System Setup program, and check the System Memory
setting.
The system should have already changed the value in the System Memory setting to reflect the newly installed memory.
If the System Memory value is incorrect, one or more of the memory modules may not
be installed properly. Repeat step 1 through step 8, ensuring that the memory modules
are firmly seated in their connectors.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Locate the memory module connectors in which you will install a memory module
(see Figure 4-29).
Press down and outward on the memory module connector ejectors, as shown in
Figure 4-30, to allow the memory module to be inserted into the connector.
Figure 4-30. Removing and Installing a Memory Module
Align the memory module's edge connector with the alignment key, and insert the
memory module in the connector (see Figure 4-30).
The memory module connector has an alignment key that allows the memory module to be installed in the connector 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 connector (see
Figure 4-30).
When the memory module is properly seated in the connector, the memory module connector ejectors should align with the ejectors on the other connectors with memory modules installed.
Repeat step 5 through step 8 of this procedure to install the remaining memory
modules.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
To take advantage of future options in speed and functionality, you can add a second microprocessor or replace either the primary or secondary microprocessor.
NOTE: The second microprocessor must be of the same type as the first. If the two
microprocessors are different speeds, both will operate at the speed of the slower
microprocessor.
Each microprocessor and its associated cache memory are contained in a PGA package that is installed in a ZIF socket on the system board. A second ZIF socket accommodates a secondary microprocessor.
NOTE: In a single microprocessor system, the microprocessor must be installed in the
PROC 1 socket.
CAUTION: Before you perform this procedure, you must turn off the system and disconnect it from its power source. For more information, see the safety instructions in your System Information Guide.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Remove the back fan assembly (see "Removing the Back Fan Assembly"). If you are
installing a second microprocessor, go to step 9.
Remove the microprocessor heat sink:
Press down on the heat-sink securing clips to release the clips from the retaining
tabs on the ZIF socket (see Figure 4-31).
Remove the heat-sink securing clips.
CAUTION: The microprocessor and heat sink can become extremely hot. Be sure the microprocessor has had sufficient time to cool before handling.
NOTICE: Never remove the heat sink from a microprocessor unless you intend to remove the
microprocessor. The heat sink is required to maintain proper thermal conditions.
Lift the heat sink out of the chassis and place it on its side.
Figure 4-31. Removing and Replacing a Heat Sink
Pull the socket release lever straight up until the microprocessor is released (see
Figure 4-32).
Lift the microprocessor out of the socket and leave the release lever up so that the
socket is ready for the new microprocessor.
NOTICE: Be careful not to bend any of the pins when removing the microprocessor. Bending
the pins can permanently damage the microprocessor.
Figure 4-32. Removing and Replacing a Microprocessor
Unpack the new microprocessor.
If any of the pins on the microprocessor appear bent, contact the system manufacturer.
Ensure that the release lever on the microprocessor socket is in the upright position.
Align pin 1 on the microprocessor (see Figure 4-32) with pin 1 on the microprocessor
socket.
NOTE: Force is not needed to install the microprocessor in the socket. When the
microprocessor is aligned correctly, it should drop into the socket.
Install the microprocessor in the socket (see Figure 4-32).
NOTICE: Positioning the microprocessor incorrectly can permanently damage the
microprocessor and the system when you turn on the system. When placing the microprocessor
in the socket, be sure that all of the pins on the microprocessor go into the corresponding holes.
Be careful not to bend the pins.
When the microprocessor is fully seated in the socket, rotate the socket release lever
back down until it snaps into place, securing the microprocessor.
Place the new heat sink on top of the microprocessor (see Figure 4-31).
Orient the securing clips as shown in Figure 4-31.
Hook the end of the clips without the latch to the tab on the edge of the socket.
Push down and pivot the securing clip latch until the hole on the clip latches onto the
ZIF socket tab.
If you are adding a second microprocessor, you must install a VRM in the VRM 2
connector, pushing down firmly to make sure that the latches engage (see
Figure 4-33).
Reconnect the system to its electrical outlet and turn the system on, including any
attached peripherals.
Enter the System Setup program, and ensure that the microprocessor options match
the new system configuration (see "Using the System Setup Program").
As the system boots, it detects the presence of the new microprocessor and automatically changes the system configuration information in the System Setup program. If you installed a second microprocessor, a message similar to the following appears:
Confirm that the top line of the system data area in the System Setup program
correctly identifies the installed microprocessor(s) (see "Using the System Setup
Program").
Exit the System Setup program.
Run the system diagnostics to verify that the new microprocessor is operating
correctly.
See "Running the System Diagnostics" for information on running the diagnostics and troubleshooting any problems that may occur.
CAUTION: Before you perform this procedure, you must turn off the system and disconnect it from its power source. For more information, see the safety instructions in your System Information Guide.
CAUTION: There is a danger of a new battery exploding 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. See the System Information Guide for additional information.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Turn off the system, including any attached peripherals, and disconnect the system
from the electrical outlet.
Remove the memory module, hardware key, and battery for the integrated RAID
controller (if those components are installed) (see "Activating the Integrated RAID
Controller").
Remove all other cables attached to the system board (including the intrusion alarm
cable, the control panel cable, and the three cables from the power distribution
module).
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
Lower the system board onto its grounding tabs and slide the system board back until
the board's thumbscrew can be tightened to secure the system board into place (see
Figure 4-35).
Replace all other cables removed when the system board was removed (intrusion alarm
cable, control panel cable, IDE cable for the CD/diskette drive, and the power and
interface cables from the power distribution module).
Reconnect the system to its electrical outlet(s) and turn the system on, including any
attached peripherals.
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