The procedures in this guide require that you open or 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 system documentation. Always follow the instructions closely. Make sure to review all
of the procedures in "Safety Instructions" in your System Information
document.
This section provides servicing procedures for components inside the system. Before you
start any of the procedures in this section, perform the following tasks:
The optional front bezel has system status indicators. A lock on the bezel restricts
access to the power button, diskette drive, CD drive, hard drive(s), and the
interior of the system.
To remove the bezel, use the system key to unlock the keylock on the
bezel, press the tab at each end of the bezel, and then pull the bezel away
from the system (see Figure 1).
To replace the front bezel, fit the tabs on the bezel into the
corresponding slots in the front panel and lock the keylock.
If the system is installed in a rack, loosen the front-panel thumbscrews that secure the system to the
rack cabinet, and slide the system out of the rack to the slide assembly's fully
extended position.
If the optional security screw is installed on the system cover, remove it
now.
The system board can accommodate one or two microprocessors. A riser board
accommodates one or two PCI expansion cards. Up to four memory modules may be
installed on the system board.
The hard-drive bays provide space for up to three 1-inch SCSI hard drives or
two IDE hard drives. SCSI hard drives are connected to a SCSI host adapter on
the system board through the SCSI backplane board. IDE hard drives are
connected directly to the system board.
The peripheral bays provide space for an optional 3.5-inch diskette drive and
a CD drive.
The power supply distribution board (PSDB) provides hot-plug logic and power
distribution for the system. Two hot-pluggable, redundant power supplies provide
power to the system board and internal peripherals. Separate PSDBs, power
supplies, and power entry modules are provided for systems powered by -48 VDC
and for systems powered by AC input power.
During an installation or troubleshooting procedure, you may be required to
change a jumper. For information on the system board jumpers, see "Jumpers
and Connectors."
CAUTION: Before
attempting to install the replacement power supply, check to ensure
that you are installing the same type power supply. You cannot install an AC
input power supply in a system configured for 48 VDC power; and
conversely, you cannot install a 48 VDC power supply in a system
configured for AC power.
Your system may have one or two power supplies installed. If two power
supplies are installed, they are hot-pluggable, which means that you can replace one without
shutting down the system and turning off the power. For systems with two
hot-pluggable power supplies, begin this procedure at step 2.
CAUTION: Read the safety instructions
in your System Information document.
If your system has a single power supply, turn off the system, including any attached peripherals, and disconnect the
system from the electrical outlets.
CAUTION: In a
system with two power supplies, the
power supplies are hot-pluggable. Remove and replace only one power
supply at a time.
CAUTION: The
connectors on the PSDB contain high voltages. Do not remove the metal
cover from the PSDB or touch the connectors on the PSDB or the power supply.
While grasping the power supply handle, slide the power supply
away from the PSDB 0.75 inch (2 cm), and then lift the power supply out of
the chassis (see Figure 5).
AC power supply (one notch on card-edge
connector)
3
48 VDC power supply (two notches on
card-edge connector)
To install the replacement power supply, align the stud on the
side of the power supply (see Figure 5)
with the corresponding notch in the chassis, and then lower the power supply
into the chassis.
Slide the power supply toward the PSDB until the power supply
connector is fully seated in the PSDB connector.
Your system may have five or six cooling fans. If your system has the
optional second power supply installed, the sixth fan is provided to cool the second power supply.
CAUTION: Read the safety instructions
in your System Information document.
If the problem is not resolved, install a replacement cooling
fan.
Disconnect the fan power cable from the system board or
control panel board.
Lift the defective fan straight up out of the power-supply
bay or fan bracket (see Figure 6).
Insert the new fan into the power-supply bay or fan bracket.
When replacing the fan, ensure that the finger
guard on the fan faces the back of the system and the fan cable points toward
the fan power cable connector on the system board or control panel board
(see Figure 6).
Connect the fan power cable to the system board or control
panel board.
If the replacement fan does not operate, the system board is faulty.
NOTE: After
installing a new fan, allow up to 30 seconds for the system to recognize
the fan and determine whether it is working properly.
Disconnect the fan power cable from the system board for each cooling
fan mounted on the fan bracket.
Do not remove the fans from the bracket at this time.
Press the fan bracket release tab, lift the fan bracket out of
the system with the fans attached, and set the bracket with fans
installed on a smooth surface.
Lift the fans straight up out of the fan bracket (see Figure 7).
Insert the fans into the new replacement fan bracket.
When replacing the fans, ensure that the finger
guard on the fan faces the back of the system and the fan cable points toward
the fan power cable connector on the system board (see Figure 7).
Lower the fan bracket into place into the chassis.
The bracket release latch clicks as it locks in place.
CAUTION: Read the safety instructions
in your System Information document.
Your system may have a diskette drive, a CD drive, and up to three SCSI or up
to two IDE hard drives installed. Procedures for replacing all drives are found in the following subsections.
Disconnect the diskette drive interface cable from the FLOPPY connector on the
top of the SCSI backplane assembly (or, if IDE drives are installed, from
the FLOPPY connector on the system board).
Push down on the drive retention latch approximately 6.35 mm (0.25 inch) while
pulling the
diskette drive out of the peripheral bay (see Figure
8).
If the replacement diskette drive has no carrier tray, remove the faulty
diskette drive from its carrier tray:
Grasp both the right- and left-sides of the carrier tray and
gently bend the sides backward (see Figure
9) until the diskette drive is released from the carrier tray.
Fit the right edge of the new replacement diskette drive into the
carrier tray, and then
lower the left edge of the drive into the carrier tray until the drive snaps
into place.
If the replacement CD drive has no carrier tray, remove the faulty
CD drive from its carrier tray:
Grasp both the right- and left-sides of the carrier tray and
gently bend the sides backward (see Figure
11) until the CD drive is released from the carrier tray.
Fit the right edge of the new replacement CD drive into the
carrier tray, and then
lower the left edge of the drive into the carrier tray until the drive snaps
into place.
If the drive is a hot-pluggable replacement that has
already been prepared, turn on the drive bay and reintegrate the drive.
If the replacement drive is not a hot-pluggable hard drive, reconnect the system and peripherals to their electrical
outlets, turn on the system, and run the
system diagnostics
to test and prepare the new drive.
Expansion cards are installed on the system's riser board (see Figure 16).
The riser board plugs into the RISER connector on the system board
and is considered an extension of the system board.
Your system is available with two different riser board configurations (see Figure 16):
Two 64-bit, 66-MHz expansion slots
One 64-bit, 66-MHz expansion slot (PCI2) and one 32-bit, 33-MHz expansion
slot (PCI1) for 5-V cards
NOTE: The
optional server management card uses the 32-bit, 33-MHz, 5-V expansion slot.
You can install only half-length PCI cards in the lower expansion slot
(PCI2). You can install a full-length expansion card in the upper expansion slot
(PCI1) unless you have installed an optional server management card. In this
case, neither slot will accommodate full-length cards.
Remove the expansion-card latch by loosening the captive thumbscrew and
removing the latch (see Figure 17).
Grasp the expansion card by its edges and remove it from the expansion-card connector.
Installing a Replacement Expansion Card
To install a replacement or an additional expansion card, perform the following
steps:
Prepare the replacement expansion card for installation.
See the documentation that came with the expansion card for information on configuring the
card, making internal connections, or otherwise customizing the card for the system.
If the replacement card is an identical replacement, ensure that any
jumpers or configuration switches are set in an identical manner as the
expansion card you just removed.
Locate the slot from which you removed the faulty expansion card.
If this is an additional expansion card, select the expansion slot in which
you will install the new expansion card.
Install the new expansion card:
Remove the filler panel bracket from the expansion slot, if
this is a new installation.
Lower the card into the system.
If the card is a full-length card, you may need to guide
the front edge of the card into the full-length card support bracket.
Insert the card-edge connector firmly into the expansion-card connector
on the riser board until the card is fully
seated.
When the card is seated in the connector, replace and secure
the expansion-card latch.
Connect any cables that should be attached to the card.
See the documentation supplied with the card for information
about its cable connections.
The four memory module sockets on the system board can accommodate from 256 MB to 4 GB of registered SDRAM. The memory module sockets are arranged in pairs consisting of two banks (bank 1 and bank 2). These banks are located near the
back edge of the system board (see Figure 26)
next to the back power supply.
CAUTION: Read the safety instructions
in your System Information document.
System Memory Upgrade Kits
The system is upgradable to 4 GB by installing combinations of 128-, 256-,
512-MB, and 1-GB registered memory modules. If you receive an error message
stating that the maximum memory has been exceeded, see Messages,
Codes
and Indicators. You can purchase memory upgrade kits from the system
manufacturer as needed.
NOTE: The memory modules must be
PC-133 compliant.
Memory Module Installation Guidelines
Starting with the socket farthest from the power-supply bay, the memory module sockets are labeled
BANK1_DIMM_A, BANK1_DIMM_B, BANK2_DIMMA, and BANK2_DIMM_B (see Figure
18). When you install
memory modules, follow these guidelines:
You must install memory modules in matched pairs (see Figure
18).
Install a pair of memory modules in bank 1 before installing a second pair
in bank 2.
To perform a memory upgrade to the system board, perform the following steps.
CAUTION: Before
you perform this procedure, you must turn off the system and disconnect
it from its power source. For more information, read the safety instructions
in your System Information document."
Close the system doors, reconnect the system to the electrical
outlet, and turn on the system.
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 and displays an error message.
Press <F2> to enter the System Setup program, and check
the System Memory setting on the System Setup screens.
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 5,
checking to make sure that the memory modules are firmly seated in their
sockets.
Run the system memory test in the system diagnostics.
To add or install a memory module, perform the following steps.
CAUTION: Read the safety instructions
in your System Information document.
Press down and outward on the ejectors on the memory module socket, as
shown in Figure 19, to allow the memory
module to be inserted into the socket.
Align the memory module's edge connector with the slot in the
center of the memory module socket, and insert the memory module into the
socket (see Figure 19).
The memory module socket has two alignment keys that allow the memory module
to be installed 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 (see Figure 19).
When the memory module is properly seated in the socket, the ejectors on the
memory module socket should align with the ejectors on the other sockets
with memory modules installed.
Repeat steps 1 through 3 of this procedure to install the
remaining memory modules.
CAUTION: Read the safety instructions
in your System Information document.
To remove a memory module, press down and outward on the ejectors on each end of the socket
until the memory module pops out of the socket (see Figure
20).
The system board has two zero-insertion-force (ZIF) sockets which hold microprocessors
and heat-sink assemblies.
If you are adding a microprocessor, the
secondary microprocessor must have the same operating frequency as the first. For example,
if the system has a 1.13-GHz primary microprocessor, your secondary microprocessor must
also be a 1.13-GHz microprocessor.
NOTICE: If you are upgrading a system by installing
a secondary microprocessor, or one or two higher-speed microprocessors, you must order
your upgrade kits from the system manufacturer. The upgrade kits from the system
manufacturer contain the correct version of the microprocessor for use as a secondary
microprocessor.
Locate the microprocessor ZIF sockets into which you will install or replace a
microprocessor and heat-sink assembly.
To remove the retention clip that secures the heat sink to the
microprocessor socket, press down firmly on the tab on the retention clip,
and then remove the clip from the heat sink (see Figure
21).
Remove the heat sink and set it down with the underside of the heat sink
facing up.
NOTICE: Note the orientation of the heat sink with respect to the
microprocessor and its ZIF socket. The heat sink and its securing clip must be
aligned with the arrow beside the ZIF socket on the system board.
NOTICE: Never
remove the heat sink from a microprocessor unless you intend to remove the
microprocessor. The heat sink is necessary to maintain proper heat transfer
from the microprocessor.
Pull the socket release lever straight up until the microprocessor is
released (see Figure 22).
CAUTION: Read the safety instructions
in your System Information document.
NOTICE: Be
careful not to bend any of the pins when unpacking the microprocessor
chip. Bending the pins can permanently damage the microprocessor chip.
To install an additional or a replacement microprocessor and heat-sink assembly,
perform the following steps.
This procedure assumes the system cover and front bezel have been removed, the
system power is off, and all power cables and peripheral cables are disconnected.
Unpack the new microprocessor.
If any of the pins on the microprocessor appear bent, see "Obtaining
Technical Assistance" for instructions on obtaining technical assistance.
NOTICE: Identifying
the pin-1 corners is critical to positioning the chip correctly.
Identify the pin-1 corner of the microprocessor by turning the
chip over and locating the tiny gold triangle that extends from one corner
of the large central rectangular area. The gold triangle points toward pin 1,
which is also uniquely identified by a triangular pad (see Figure
23).
Align the pin-1 corner of the microprocessor chip (see Figure 24)
with the pin-1 corner of the microprocessor socket.
NOTICE: Positioning
the microprocessor incorrectly can permanently damage the chip and the
system when you turn on the system.
Install the microprocessor chip in the socket (see Figure 24).
If the release lever on the microprocessor socket is not all
the way up, move it to that position now.
NOTICE: When
placing the microprocessor chip in the socket, be sure that all of the
pins on the chip go into the corresponding holes of the socket. Be
careful not to bend the pins.
With the pin-1 corners of the chip and socket aligned, set the
chip lightly in the socket and make sure that all pins are matched with
the correct holes in the socket.
Because the system uses a ZIF microprocessor socket, there is no need
to use force (which could bend the pins if the chip is misaligned).
When the chip is positioned correctly, it should drop down into the socket
with minimal pressure.
When the chip is fully seated in the socket, rotate the socket
release lever back down until it snaps into place, securing the chip.
Pin 1 corner of
microprocessor aligned with pin-1 corner of ZIF socket
NOTICE: Note the orientation of the heat sink with respect to the
microprocessor and its ZIF socket. The heat sink and its securing clip must be
aligned with the arrow head beside the ZIF socket on the system board.
Place the new heat sink on top of the microprocessor chip (see Figure 25).
Replace the retention clip:
Orient the clip so that the release tab is facing the back
of the system and the alignment arrow on the system board.
Hook the unfolded end of the clip over the tab on the edge
of the socket facing the front of the system.
Press down on the release tab on the free end of the clip to
snap the clip over the tab on the socket (see Figure 25).
Reconnect your system and peripherals to their electrical outlets, and
turn them on.
As the system boots, it detects the presence of the new microprocessor and
automatically changes the system configuration information in the System
Setup program.
Press <F2> to enter the System Setup program, and check that the
microprocessor categories match the new system configuration.
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.
To install a replacement system board, perform the following steps:
Press the system board evenly onto all of the grounding tabs on the floor of
the chassis, and then slide it toward the back of the system about 6.3 mm (0.25 inch).
Tighten the thumbscrew to secure the system board to the chassis.
NOTICE: Systems
with IDE hard drives do not have a SCSI backplane board.
The SCSI backplane board has connectors on the top that connect to the CD
drive and the diskette drive. The bottom of the SCSI backplane board has connectors for connecting
hard drives to the system board SCSI controller.
A release latch on the back-right corner must be moved to the left to release
the SCSI backplane board (it is not necessary to touch this latch when
installing the SCSI backplane board).
CAUTION: Read the safety instructions
in your System Information document.
To remove a power supply distribution board (PSDB), perform the following steps.
CAUTION: Avoid
touching the cable connectors on the power supplies. Wait 10 to 20 seconds after
disconnecting the power cables before removing the power supplies or coming into contact
with their cable connectors.
Remove the power cables from both power entry module connectors. If you
are removing 48 VDC power cables, you must also remove the ground lugs
from the ground stud beside the power entry module.
CAUTION: Avoid
touching the cable connectors on the power supplies. Wait 10 to 20 seconds after
disconnecting the power cables before removing the power supplies or coming into contact
with their cable connectors.
At the back of the chassis, remove the screw that secures the power entry
module to the chassis (see Figure 32).
Remove the screw that secures the power supply distribution board cover (see
Figure 30).
On the side of the chassis, remove the screw that secures the forward end of
the power entry module.
Disconnect the two power cables from the top of the power supply
distribution board (see Figure 30).
Pull the power cables out the hole in the side of the chassis and set the
power entry module aside.
Installing the Replacement Power Entry Module
CAUTION: Before
attempting to install the replacement power entry module, check to ensure
that you are installing the same type module. You cannot install an AC
power entry module in a system configured for 48 VDC power; and
conversely, you cannot install a 48 VDC power entry module in a system
configured for AC power.
At the forward end of the power entry module, insert the two cable
connectors into the hole on the side of the chassis adjacent to the power
supply distribution board.
Secure the forward end of the power entry module to the side of the
chassis with the screw you removed in step 7 of "Removing the
Power Entry Module" (see Figure 32).
Install the power input cables to the power entry module's receptacles. If
you are installing a 48 VDC cable assembly, install the ground lugs on
the ground stud on the back panel of the system and secure it with the
grounding nut (see Figure 31).
Reconnect the system and peripherals to their power sources, and
turn them on.
Enter the System Setup program and verify that the setting for
the SCSI controller has changed to properly reflect the presence of the RAID hardware
(see "Using the
System Setup Program").
Reinstall the RAID software, if necessary (see the ROMB card software
documentation for more information).
Locate the ERA card connector on the system board (see Figure 34).
Align the forward edges of the ERA card with the plastic support bracket on the system board (see Figure 34)
and lower the card into the ERA card connector on the system board.
Secure the ERA card with the plastic retention clip (see Figure 34).
The system battery is a 3.0-V, coin-cell battery that maintains system
configuration, date, and time information in a special section of memory when
you turn off the system. The operating life of the battery ranges from 2 to 5
years, depending on how you use the system (for example, if you keep the system
on most of the time, the battery gets little use and thus lasts longer). You may
need to replace the battery if an incorrect time or date is displayed during the
boot routine.
You can operate the system without a battery; however, the system
configuration information maintained by the battery in NVRAM is erased each time
you remove power from the system. Therefore, you must reenter the system
configuration information and reset the options each time the system boots until
you replace the battery.
To replace the battery, perform the following steps.
CAUTION: Before
you perform this procedure, you must turn off the system and disconnect
it from its power source. See "Protecting Against Electrostatic
Discharge" in the safety instructions in your System Information
document.
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 document for additional
information.
Enter the System Setup program and, if possible, make a printed
copy of the System Setup screens (see "Using the
System Setup Program").
Turn off the system, including any attached peripherals, and
disconnect the system from the electrical outlet.
