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 your System Information document.
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 document for complete safety information.
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 document.
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), and the interior of the system.
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 expansion-card cage accommodates up to three full-length PCI or PCI-X expansion cards.
The system provides space for a 3.5-inch diskette drive and a CD drive. The CD/diskette drive tray connects to the controllers on the system board through the SCSI backplane board. For more information, see "CD and Diskettes 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."
During an installation or troubleshooting procedure, you may be required to change a jumper setting. For more information, see "Jumpers and Connectors."
NOTE: The procedure for installing each individual fan is the same.
CAUTION: See "Protecting Against Electrostatic Discharge" in the safety instructions in your System Information document.
Lower the fan into the retention base until the fan snaps into position (see Figure 4-8).
NOTE: After installing a new fan, allow up to 30 seconds for the system to recognize the
fan and determine whether it is functioning properly. The status indicator will turn green to
signify that the fan is functioning properly (see "Cooling Fan Indicator Codes").
The system includes one or two hot-pluggable power supplies.
CAUTION: DC power supplies require a safety ground wire connected to the grounding post on the system (see Figure 3-3). An energy hazard will exist if the safety ground cable is omitted or disconnected. For more information, see the DC power supply documentation.
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.
Squeeze the latch at the bottom of the power-supply handle.
Rotate the power-supply handle up until the power supply is released from the chassis
(see Figure 4-10).
Pull the power supply straight out to clear the chassis (see Figure 4-10).
Figure 4-10. Removing and Installing a Power Supply
With the power-supply handle in the extended position, slide the new power supply
into the chassis (see Figure 4-10).
Rotate the handle down until it snaps into place (see Figure 4-10).
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 "Power Indicator Codes").
The removable expansion-card cage simplifies many installation procedures by allowing you to remove the riser board and all installed expansion cards in a single step.
CAUTION: Before you perform this procedure, read the safety instructions in your System Information document.
CAUTION: See "Protecting Against Electrostatic Discharge" in the safety instructions in your System Information document.
NOTICE: To avoid damage to the system, keep the bottom of the expansion-card cage parallel
to the system board, while lowering the cage into the chassis.
With the expansion-card cage lever in the upright position, carefully lower the cage
into the chassis until it is aligned with the tabs on the chassis side wall (see
Figure 4-11).
Rotate the expansion-card cage lever down until the handle is flush with the top of the
cage, and the cage is secured in the chassis (see Figure 4-11).
The system includes three expansion slots. The expansion cards are installed on the system's riser board (see Figure 5-4 to identify the expansion slots).
Use the following guidelines when installing expansion cards:
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 33 MHz and the other card has an operating speed of 66 MHz, the bus will only operate at 33 MHz.
When installing a boot controller expansion card, such as a RAID or SCSI controller card, install the boot controller card in expansion slot 1. This position allows your operating system to properly use the boot controller card. For more information, see "PCI Bus Scan Order."
To identify expansion slots and PCI buses, see Figure 5-4. 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. Figure 5-4 provides a diagram of buses and expansion slots.
Certain operating systems do not allow the PCI bus number of the system's boot controller to change after the operating system loads. Installing an expansion card with its own PCI bridge chip in an expansion slot earlier in the PCI bus scan order than the boot controller can cause the renumbering of the boot controller PCI bus number. To allow your operating system to properly use the boot controller expansion card, install the boot controller card, such as a RAID or SCSI controller card, in expansion slot 1.
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.
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.
Press the release tab on the card-guide latch (see Figure 4-12).
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.
NOTE: 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.
The six memory module connectors on the system board can accommodate 256 MB to 6 GB of registered memory modules. The memory module connectors are arranged in pairs which consist of three banks.
The system is upgradable to 6 GB by installing combinations of 128-, 256-, 512-MB, and 1-GB registered DDR SDRAM modules. You can purchase memory upgrade kits as needed.
NOTE: The memory modules must be PC-1600 compliant.
Memory module connectors are arranged in pairs, labeled A and B. Each pair of modules forms a single bank. See Figure 5-3 to identify memory module connectors on the system board.
When you install memory modules, follow these guidelines:
You must install memory modules in matched pairs.
Install identical memory modules in connectors A and B for bank 1 before installing modules in connectors for bank 2, and so on.
Table 4-3 lists several sample memory configurations based on these guidelines.
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 steps 1 through 6, ensuring that the memory modules are
firmly seated in their connectors.
Locate the memory module connectors in which you will install a memory module
(see Figure 5-3).
Press down and outward on the memory module connector ejectors, as shown in
Figure 4-14, to allow the memory module to be inserted into the connector.
Figure 4-14. 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 4-14).
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 4-14).
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 steps 3 through 6 of this procedure to install the remaining memory modules.
A CD drive and a diskette drive mount together on a tray that slides in the front panel and connects to the controllers on the system board through the SCSI backplane board.
NOTE: You do not have to remove the CD and diskette drives from the tray to remove the
drive cable (see "Removing the CD and Diskette Drives From the Tray"). However, you must
disconnect the cable from the drives to replace the cable.
If you did not remove the CD and diskette drives from the tray, disconnect the cable
from the drives (see Figure 4-16):
Disconnect the cable from the CD drive by pulling the cable connector away from
the drive.
Disconnect the cable from the diskette drive by pulling the securing latch on the
drive's connector upward to release the cable, and then sliding the cable out of the
drive's connector.
Remove the drive cable assembly from the tray bracket (see Figure 4-17):
Remove the two rivets that secure the cable assembly board to the tray bracket.
If you did not remove the CD and diskette drives from the tray, connect the cable to
the drives (see Figure 4-16):
Connect the cable to the diskette drive by raising the securing latch on the drive's
connector to the released position, sliding the cable into the drive's connector, and
pressing the cable securing latch into the locked position.
Connect the cable to the CD drive by pressing the cable connector to the drive
connector.
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: See "Protecting Against Electrostatic Discharge" in the safety instructions in your System Information document.
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 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.
The system provides several options for hard drive configurations:
If a RAID controller card is not installed, no cables are required to use either the onboard SCSI controller or optional integrated RAID controller in either a 1 x 5 or 2/3 split configuration.
If a RAID controller card is installed, cables can be connected from the 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 onboard SCSI controller or optional integrated RAID controller.
If a cable is connected to the SCSIB backplane board connector, the SCSI backplane daughter card must be installed to activate the 2/3 split configuration. Otherwise, the system will display an error message.
See Figure 5-5 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 4-18).
Slide the hard drive out until it is free of the drive bay (see Figure 4-18).
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 4-18).
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 4-18).
Close the hard-drive carrier handle to lock it in place.
CAUTION: Before you perform this procedure, read the safety instructions in your System Information document.
CAUTION: See "Protecting Against Electrostatic Discharge" in the safety instructions in your System Information document.
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 document 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 4-20).
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 4-20).
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 4-20. 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 4-21).
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 4-21).
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 4-21. 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 4-22).
Figure 4-22. 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: Before you perform this procedure, read the safety instructions in your System Information document.
CAUTION: See "Protecting Against Electrostatic Discharge" in the safety instructions in your System Information document.
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 onboard SCSI controller or optional integrated RAID
controller.
To identify the connector on the RAID controller card, see documentation for the card. See Figure 5-5 to locate the SCSI controller connectors on the SCSI backplane board.
Route the SCSI cables over the SCSI backplane board to the expansion-card cage.
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.
To operate the SCSI backplane in a split backplane configuration, you must install a daughter card. In a split backplane configuration, the five hard-drive bays are arranged in one group of two drives and another group of three drives. This configuration is referred to as a 2/3 split backplane configuration.
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 4-23).
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 4-23).
Figure 4-23. Installing a SCSI Backplane Daughter Card
Reconfigure the SCSI cable connections to the SCSI backplane as necessary to
operate the backplane as a 2/3 split backplane:
If a RAID controller card is not installed, no cables are required to use either the onboard SCSI controller or optional integrated RAID controller in either a 1 x 5 or 2/3 split configuration.
If a RAID controller card is installed, cables can be connected from the 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 onboard SCSI controller or optional integrated RAID controller.
If a cable is connected to the SCSIB backplane board connector, the SCSI backplane daughter card must be installed to activate the 2/3 split configuration. Otherwise, the system will display an error message.
See Figure 5-5 to locate the connectors on the SCSI backplane board.
The system contains a 3.5-inch diskette drive and a CD drive mounted on the CD/diskette drive tray that connects to the controllers on the system board through the SCSI backplane board. The system also contains up to five 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: Before you perform this procedure, read the safety instructions in your System Information document.
CAUTION: See "Protecting Against Electrostatic Discharge" in the safety instructions in your System Information document.
Lower the backplane board into the system board tray.
Connect the control-panel cable to the SCSI backplane board (see Figure 4-5).
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 4-24).
Align the bottom of the backplane board in the board's mounting grooves (see
Figure 4-24).
Rotate the top of the backplane board onto the board's grounding tabs.
Slide the backplane board toward the left side chassis wall about 0.5 inch.
