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Midsize Chassis - Removing and Replacing Parts: Dell OptiPlex GX110 Systems Service
Manual
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Midsize Chassis — Removing and Replacing Parts: Dell™
OptiPlex™ GX110 Systems Service Manual
This section provides procedures for removing and replacing the
components, assemblies, and subassemblies in the Dell OptiPlex midsize chassis GX110
system.
Unless otherwise noted, each procedure assumes that the following
conditions exist:
The procedures in this manual require the use of a #2 Phillips-head
screwdriver.
Also, use a wrist grounding strap as explained in "Precautionary Measures."
Before you perform any procedure in this section, take a few moments
to read the following caution for your personal safety and to prevent damage to the system
from ESD.
 |
CAUTION: FOR YOUR PERSONAL SAFETY AND PROTECTION OF THE
EQUIPMENT Before you start to work on the system,
perform the following steps in the sequence listed:
- Turn off the computer and all peripherals.
- Disconnect the computer and peripherals from their electrical
outlets. Also, disconnect any telephone or telecommunication lines from the computer.
Doing so reduces the potential for personal injury or shock.
- If you are disconnecting a peripheral from the computer or are
removing a component from the system board, wait 10 to 20 seconds after disconnecting the
computer from the electrical outlet before disconnecting the peripheral or removing the
component to avoid possible damage to the system board.
- Wear a wrist grounding strap, and clip it to an unpainted metal
surface, such as the padlock loop on the back of the chassis. If a wrist grounding strap
is not available, touch any unpainted metal surface on the back of the computer or on the
computer chassis, such as the power supply, to discharge any static charge from your body
before touching anything inside the computer. While you work, periodically touch an
unpainted metal surface on the computer chassis to dissipate any static electricity that
might harm internal components.
- Handle components and cards with care. Do not touch the components or
contacts on a card. Hold a card by it edges or by its metal mounting bracket. Hold a
component such as a microprocessor by its edges, not by its pins.
- Verify that the standby power LED on the system board is
not on. If it is on, you may need to wait 10 to 30 seconds for it to go out
(see Figure 19).
|
Figure 1 shows a side view of the midsize chassis to help orient you
when you work inside the computer.
Figure 1. Midsize Chassis
Orientation View
 |
| 1 |
System board |
| 2 |
Expansion-card cage |
| 3 |
Power supply |
| 4 |
5.25-inch drive slots |
| 5 |
Internal drive cage |
|
Figure 2 shows the midsize chassis with the cover removed.
Figure 2. Inside the Midsize
Chassis
 |
| 1 |
Drive in upper bay |
| 2 |
Internal drive cage |
| 3 |
Chassis intrusion switch |
| 4 |
Drive interface cable |
| 5 |
Expansion-card cage |
| 6 |
Security cable slot |
| 7 |
I/O ports and connectors |
| 8 |
AC power receptacle |
| 9 |
Padlock ring |
| 10 |
Power supply |
| 11 |
System board |
| 12 |
Drive interface cable |
|
Figure 3. Computer Cover Removal
 |
| 1 |
Securing buttons (2) |
| 2 |
Cover hooks (4) |
|
To remove the midsize chassis computer cover, perform the following
steps:
- Turn off your computer and peripherals, and observe the caution for
your personal safety and protection of the equipment described in "Precautionary Measures."
- If you have installed a padlock through the padlock ring on the back
panel, remove the padlock.
- Press in on the two securing buttons until the cover is free to swing
up (see Figure 3).
- Raise the back of the cover, and pivot it toward the front of the
computer.
- Lift the cover off the hooks at the front of the chassis.
Figure 4. Computer Cover
Replacement
 |
| 1 |
Securing buttons (2) |
| 2 |
Cover hooks (4) |
|
To replace the midsize chassis cover,
perform the following steps:
- Check all cable connections, especially those that might have come
loose during your work. Fold cables out of the way so that they do not catch on the
computer cover. Make sure cables are not routed over the drive cage—they will prevent
the cover from closing properly.
- Facing the left side of the computer, hold the cover at a slight
angle as shown in Figure 4.
- Fit the cover hooks into the rectangular slots on the chassis. (It
might be helpful to look down into the chassis to verify that the hooks are in place.)
- Pivot the cover down toward the back and into position. Make sure
that the two securing buttons click into place.
 |
NOTE: After you remove and replace the
cover, the chassis intrusion detector will cause the following message to be displayed at
the next system start-up: ALERT! Cover was
previously removed. |
For instructions on resetting the chassis intrusion detector, see "Checking System Functions."
Figure 5. 5.25-Inch Front-Panel Insert Removal
 |
| 1 |
5.25-inch front-panel insert |
| 2 |
Ring tabs (2) |
| 3 |
Posts (2) |
|
To remove a 5.25-inch front-panel insert in the midsize chassis,
perform the following steps:
- Hold the bezel with the front facing you.
- From the front of the top cover, use your thumbs to press inward on
the insert until it snaps free of the cover.
To replace a 5.25-inch front-panel insert, position the two
ring-tabs over the posts on the inside of the bay opening, and then press the ring tabs
over the posts.
Figure 6. Control Panel Removal
 |
| 1 |
Chassis hooks (2) |
| 2 |
Mounting screw |
| 3 |
Control panel |
| 4 |
Control panel cable |
|
To remove the control panel in the midsize chassis, perform the
following steps:
- Remove the hard-disk drive cage.
- Disconnect the control panel cable from the control panel connector
on the system board (see Figure 19 or the internal service label for the location of the
control PANEL connector).
- Remove the mounting screw holding the control panel to the chassis.
- Slide the control panel out of the hooks holding it to the chassis.
Note the routing of the control panel cable as you remove it from the chassis.
Figure 7. Chassis Intrusion
Switch Removal
 |
| 1 |
Control panel |
| 2 |
Chassis intrusion switch |
|
To remove the chassis intrusion switch in the midsize chassis,
perform the following steps:
- Remove the control panel from the front panel.
- Disconnect the chassis intrusion switch cable from the control panel (see Figure 7).
Note the routing of the chassis intrusion cable as you remove the cable from the chassis.
Chassis hooks may hold the cable in place inside the chassis.
- Slide the chassis intrusion switch out of its slot on the chassis and carefully remove
the switch and its attached cable from the chassis.
- Install the replacement chassis intrusion switch and cable.
- To reset the chassis intrusion detector, enter System Setup during the system's POST. In
the Chassis Intrusion option, press the left- or right-arrow key to select Reset,
and then choose Enabled, Enabled-Silent, or Disabled (see your System
User's Guide for instructions).
| |
NOTE: In all of the following procedures, left and
right refer to your left and right as you face the front of the computer. |
3.5-Inch Diskette Drive Removal
Figure 8. 3.5-Inch
Diskette Drive Removal
To remove the 3.5-inch diskette drive assembly in the midsize
chassis, perform the following steps:
- Disconnect the DC power and cables from the diskette drive.
- Press the bracket release and pull the diskette drive assembly from
the chassis.
- Rotate the left side of the 3.5-inch diskette drive assembly up, and
lift the assembly out of the chassis (see Figure 9).
Figure 9. 3.5-Inch
Drive Bracket Removal
 |
| 1 |
Bracket-mounting screw |
| 2 |
Hooks (2) |
| 3 |
Drive-mounting screws (2) |
|
- Remove the two drive-mounting screws from the left side of the drive,
and remove the drive from the bracket.
When you replace the 3.5-inch diskette drive assembly, be sure that
the two hooks on the right side of the bracket engage the mounting holes in the side of
the 3.5-inch diskette drive assembly.
Figure 10. 5.25-Inch Drive Removal
To remove a 5.25-inch drive from an externally accessible drive bay
in the midsize chassis, perform the following steps:
- Disconnect the DC power and data cables from the back of the drive.
- Squeeze the retaining tabs that extend from each side of the drive
bracket and slide the bracket out of the bay (see Figure 10).
- Turn the drive assembly upside down and remove the four screws that
secure the drive to the bracket (see Figure 11).
Figure 11. Drive Bracket
|
| 1 |
Metal tabs (2) |
| 2 |
Drive bracket |
|
- Remove the drive bracket from the chassis.
If a hard-disk drive is already installed on the drive bracket,
disconnect the DC power cable and EIDE cable from the drive.
- Remove the screw securing the hard-disk drive bracket to the front
wall of the chassis. Grasp the front part of the bracket that serves as a handle, and
rotate the bracket up toward the back of the computer until it disengages from the floor
of the chassis (see Figure 12).
Figure 12. Removing the Hard-Disk
Drive Bracket
 |
| 1 |
"Handle" on bracket |
| 2 |
Screw securing drive to chassis |
|
- Slide the drive into the chosen bay of the bracket, orienting it so
that the connectors on the back of the drive face the back of the chassis—and the
power input connector is closest to the floor of the chassis—when the bracket is
reinstalled.
Figure 13. Inserting the
Hard-Disk Drive in the Bracket
 |
| 1 |
Drive bracket |
| 2 |
Tabs (2) |
| 3 |
1.6-inch drive |
| 4 |
Screws (4) |
|
- Align the four screw holes of the drive and bracket. Insert and
tighten the screws that came with your upgrade kit (see Figure
13).
If you are replacing a drive in the 1.6-inch slot, use the four
screw holes in the side of the bracket. If you are replacing a drive in the 1-inch slot,
use the four screw holes in the bottom of the bracket.
- Reinstall the hard-disk drive bracket in the chassis.
Hold the bracket by its handle, so that it stays at the proper tilt.
Let it brush the side of the drive cage as you lower it into the chassis until the two
tabs at the bottom back of the bracket (see Figure 13)
fit flush against the front of the rail that extends across the chassis floor and the
horizontal lip at the back fits over the rail (see Figure
14).
Rotate the bracket down into position, and reinstall the screw you
removed in step 2.
NOTICE: You must match the colored strip on the EIDE cable with
pin 1 on the IDE1 connector to avoid possible damage to your system.
- Connect one of the device connectors on the EIDE cable to the 40-pin
interface connector on the back of the hard-disk drive (see Figure
14). The cable is keyed so that the colored edge of the EIDE cable lines up with the
pin-1 end of the interface connector.
| |
NOTE: Ultra Advanced Technology
Attachment (ATA)/66 hard-disk drives require an 80-conductor cable to transfer data at
full speed. The 80-conductor cable has a 40-pin connector just like the Ultra ATA/33 cable
but has twice as many wires within the cable itself. If you use an Ultra ATA/33 cable with
Ultra ATA/66 hard-disk drives, they will transfer data at Ultra ATA/33 speeds. |
Figure 14. Attaching Hard-Disk
Drives Cables
 |
| 1 |
Interface connector |
| 2 |
Power input connector on drive |
| 3 |
Lip |
| 4 |
Rail |
| 5 |
IDE1 connector |
| 6 |
IDE2 connector |
| 7 |
DC power cable |
| 8 |
EIDE cable |
|
NOTICE: You must match the colored strip on the EIDE cable with
pin 1 on the IDE1 connector to avoid possible damage to your system. Pin 1 is indicated by
a silk-screened "1" printed on the system board.
- If it is not already connected, connect the other end of the EIDE cable to the
appropriate EIDE interface connector on the system board.
To locate the IDE1 connector on the system board, see Figure 19.
- Connect a DC power cable into the power input connector on the back
of the drive (see Figure 14).
Check all connectors to be certain that they are properly cabled and
firmly seated.
- Replace the computer cover.
Reconnect your computer and peripherals to their electrical outlets, and turn on the
peripherals.
- Insert a bootable system diskette into drive A, and turn on the
computer system.
- Enter System Setup and update the Drive 0 option under Primary
Drive n.
After you update the drive setting,
reboot the system.
- Partition and logically format your drive before proceeding to the
next step.
See the documentation for your operating system
for instructions.
- Start the Dell Diagnostics, and test the hard-disk drive by running
the Hard-Disk Drive(s) Test Group.
- Install your operating system on your hard-disk drive.
Refer to the documentation that came with your operating system.
To access some of the components on the system board, you may have
to rotate the system power supply out of the way.
To rotate the power supply, perform the following steps:
- Disconnect the AC power cable from the AC power receptacle on the
back of the power supply.
Figure 15. System Power Supply
Rotation
 |
| 1 |
Securing tab |
| 2 |
Release latch |
| 3 |
Power supply |
|
- Free the power supply from the securing tab labeled
"RELEASE—>," and rotate it upward until it locks in its extended
position.
To remove the system power supply in the midsize chassis, perform
the following steps:
- Rotate the system power supply.
- Disconnect the power cables from all drives.
- Remove the power supply cables from the system board.
- Lift the front of the power supply until it stops. Then rotate the
power supply away from the chassis.
- Lift the power supply out of the chassis.
To reinstall the system power supply, align the swivel points at the
rear of the power supply with the holes in the chassis and power supply support arm. Then
perform the removal procedure in reverse.
Figure 16. Expansion-Card Cage Removal
 |
| 1 |
Slots (2) |
| 2 |
Tabs (2) |
| 3 |
Securing lever |
|
To remove the expansion-card cage, complete the following steps:
- Rotate the securing lever toward the back of the computer until it
stops in the upright position.
- Lift the expansion-card cage up and away from the computer.
To replace an expansion-card cage, keep the cage flush against the
chassis to ensure that the lever engages the notch when the lever is depressed.
The midsize chassis is available with either a standard PCI riser
board (see Figure 17) or an optional PCI/ISA riser board (see Figure 18). The standard PCI riser board provides five PCI
expansion card slots. The optional PCI/ISA riser board provides two PCI expansion slots,
two ISA expansion slots, and one shared PCI/ISA expansion slot.
|
NOTE: ISA expansion-card connector 1 and PCI
expansion-card connector 3 share an expansion slot; only one of these two connectors can
be used. |
Figure 17. Midsize Chassis PCI Riser Board
(Standard)
 |
| 1 |
Auxiliary power indicator (AUX_LED) |
| 2 |
PCI expansion connector 5 (PCI5) |
| 3 |
PCI expansion connector 4 (PCI4) |
| 4 |
Remote Wakeup header (WOL) |
| 5 |
PCI expansion connector 1 (PCI1) |
| 6 |
PCI expansion connector 2 (PCI2) |
| 7 |
PCI expansion connector 3 (PCI3) |
|
Figure 18. PCI/ISA Riser Board
(Optional)
 |
| 1 |
Auxiliary power indicator LED (AUX_LED)
|
| 2 |
ISA expansion connector 3 (ISA3) |
| 3 |
ISA expansion connector 2 (ISA2) |
| 4 |
ISA expansion connector 1 (ISA1) |
| 5 |
Remote Wakeup header (WOL) |
| 6 |
PCI expansion connector 1 (PCI1) |
| 7 |
PCI expansion connector 2 (PCI2) |
| 8 |
PCI expansion connector 3 (PCI3) |
|
Figure 19 shows the system board and the location of all its sockets
and connectors.
Figure 19. System Board Components
 |
| 1 |
Optional audio connectors |
| 2 |
NIC connector |
| 3 |
Standby power LED (AUX_PWR) |
| 4 |
Video connector |
| 5 |
CD-ROM drive audio cable connector
(optional) |
| 6 |
Fan power connector |
| 7 |
Telephony connector (optional) |
| 8 |
Serial port 2 connector |
| 9 |
USB connectors (2) |
| 10 |
Mouse (upper) and keyboard (lower)
connectors |
| 11 |
Parallel port (upper) and serial port 1
(lower) connectors |
| 12 |
Riser board connector |
| 13 |
System board jumpers |
| 14 |
IDE1 connector |
| 15 |
IDE2 connector |
| 16 |
Diskette/tape-drive connector |
| 17 |
PC speaker connector |
| 18 |
Battery |
| 19 |
DIMM sockets (2) |
| 20 |
Microprocessor package |
| 21 |
3.3-V power connector |
| 22 |
Control panel connector |
| 23 |
DC power connector |
|
Figure 20 shows the location of the
PSWD jumper on the system board.
Figure 20. System Board Jumper
Table 1 lists the labels for connectors and sockets on the system
board, and it gives a brief description of their functions.
Table 1. System Board Connectors
and Sockets
| Connector or Socket |
Description |
| AUX_PWR |
Standby power indicator |
| B1 |
Battery socket |
| CD-IN |
CD-ROM drive audio cable connector
(optional) |
| DIMM_x |
DIMM socket |
| DSKT |
Diskette/tape drive interface connector
|
| ENET |
Integrated NIC connector |
| FAN |
Microprocessor fan connector |
| IDEn |
EIDE interface connector |
| INTRUSION |
Chassis intrusion switch connector
|
| KYBD |
Keyboard connector |
| LINE-IN |
Line-in connector (optional) |
| LINE-OUT |
Line-out connector (optional) |
| MIC |
Microphone connector (optional) |
| MICROPROCESSOR |
Microprocessor connector |
| MODEM |
Telephony connector (optional) |
| MONITOR |
Video connector |
| MOUSE |
Mouse connector |
| PANEL |
Control panel connector |
| PARALLEL |
Parallel port connector; sometimes
referred to as LPT1 |
| POWER_1 |
Main power input connector |
| POWER_2 |
3.3-V power input connector |
| RISER |
Riser board connector |
| SERIALn |
Serial port connectors |
| USB |
USB connectors |
The GX110 midsize chassis system accommodates up to five expansion
cards. (See Figure 21 for examples of these cards.)
| |
NOTE: Before disconnecting a peripheral from
the system or removing a component from the system board, verify that the standby power
LED on the riser board is off. If it is on, you may need to wait 10 to 30 seconds for it
to go out (see Figure 17 or Figure
18). |
Figure 21. Expansion Cards
 |
| 1 |
8-bit ISA expansion card |
| 2 |
16-bit ISA expansion card |
| 3 |
32-bit PCI expansion card |
|
Expansion-Card Removal
To remove an expansion card, perform the following steps:
- Remove the expansion-card cage.
- If necessary, disconnect any cables connected to the card.
- Unscrew the mounting bracket of the card you want to remove.
- Grasp the card by its outside corners, and ease it out of its
connector.
- If you are removing the card permanently, install a metal filler
bracket over the empty card-slot opening.
| |
NOTE: Installing filler brackets over empty
card-slot openings is necessary to maintain FCC certification of the system. The brackets
also keep dust and dirt out of your computer. |
- Replace the expansion-card cage.
Expansion-Card Replacement
Figure 22. Expansion Card
Replacement
 |
| 1 |
Card-edge connector |
| 2 |
Expansion card |
| 3 |
Riser board |
| 4 |
Expansion-card connector |
| 5 |
Expansion-card cage |
|
To replace an expansion card, perform the following steps.
- Prepare the expansion card for installation, and remove the computer cover.
See the documentation that came with the expansion card for
information on configuring the card, making internal connections, or otherwise customizing
it for your system.
| |
CAUTION: Some network cards automatically start up
the system when they are connected. To guard against electric shock, be sure to unplug
your computer from its electrical outlet before installing any expansion cards.
|
- Remove the expansion-card cage.
- If the card-slot opening for the
slot you intend to use is covered by a metal filler bracket, unscrew and remove the
bracket (see Figure 23).
Save the screw to use when installing the expansion card later in this
procedure.
Figure 23. Removing the
Filler Bracket
- Insert the expansion card into the expansion-card connector.
If the expansion card is full-length, insert the front end of the card into the
corresponding card guide on the inside front of the chassis as you insert the card into
its connector. Insert the card's edge connector firmly into the expansion-card slot.
Gently rock the card into the connector until it is fully seated.
- When the card is firmly seated in the connector, secure the card's
mounting bracket to the chassis with the screw you removed in step 3.
- Replace the expansion-card cage.
- Connect any cables that should be attached to the card.
See the documentation for the card for information about the card's cable connections.
Figure 24. DIMM Removal
To remove a DIMM, perform the following steps:
- Unlatch and rotate the power supply up until it locks (see Figure 15).
- Push outward on both of the two DIMM socket ejectors until the DIMM
is released from its socket.
- Lift the DIMM away from the socket.
To install a DIMM, press the DIMM fully into the socket while
closing the ejectors to lock the DIMM into the socket (see Figure
25).
Figure 25. DIMM Installation
 |
| 1 |
Ejectors (2) |
| 2 |
Notches (2) |
|
Airflow Shroud, Heat Sink Assembly, and Microprocessor Package Removal
To remove the airflow shroud, heat sink assembly, and the microprocessor package in the
midsize chassis, perform the following steps:
- Remove the computer cover, observing
all safety precautions.
- Rotate the power supply out of the way.
- Remove the airflow shroud by pulling up on the airflow shroud release
tabs on the sides at the bottom of the shroud while you lift the airflow shroud straight
up and out of the chassis (see Figure 26).
Figure 26. Airflow Shroud Removal
 |
| 1 |
Airflow shroud |
| 2 |
Release tabs |
| 3 |
Heat sink assembly |
|
- Remove the metal retaining clip (see Figure 27) that
secures the heat sink assembly to the microprocessor package by gently pushing down on the
folded part of the retaining clip with a small screwdriver.
The retaining clip hooks over tabs on the sides of the ZIF socket.
Figure 27. Heat Sink Assembly Removal
 |
| 1 |
Retaining clip |
| 2 |
Heat sink assembly |
| 3 |
Microprocessor package |
| 4 |
ZIF socket |
|
| |
CAUTION: The microprocessor package and heat sink assembly can
get extremely hot. To avoid burns, be sure the package and assembly have had sufficient
time to cool before you touch them. |
- Remove the heat sink assembly from the microprocessor package.
NOTICE: Be careful not to bend any of the pins when you remove the microprocessor
package from the ZIF socket. Bending the package pins can permanently damage the
microprocessor.
- Detach and lift out the microprocessor package from the ZIF socket.
The ZIF socket has a lever-type handle that secures and releases the
microprocessor package (see Figure 28) from the ZIF socket.
- Pull the socket release lever straight out until the microprocessor
package releases.
- Remove the microprocessor package from the socket.
Leave the release lever extended so that the socket is ready for the
new microprocessor package.
Figure 28. Microprocessor Package Removal
 |
| 1 |
Microprocessor package |
| 2 |
Socket release lever |
| 3 |
ZIF socket |
|
Microprocessor Package, Heat Sink Assembly, and Airflow Shroud Replacement
To replace the microprocessor package, heat sink assembly, and the airflow shroud in
the midsize chassis, perform the following steps:
- Unpack the new microprocessor package.
If any of the pins on the microprocessor appear to be bent, see
"Getting Help" in your System User's Guide for instructions on obtaining
technical assistance.
NOTICE: You must position the microprocessor package correctly in the ZIF socket to
avoid permanent damage to the microprocessor and the computer when you turn on the system.
- Install the microprocessor package in the ZIF socket (see Figure 29).
- If the release lever on the ZIF socket is not all the way out, move
it to that position now.
- Align pin-1 (the beveled corner) of the microprocessor package and
pin-1 of the ZIF socket.
- Set the microprocessor package lightly in the socket, making sure
that all the pins are headed into the correct holes.
Because your system uses a ZIF socket, there is no need to use force
(which could bend the pins if the microprocessor package is misaligned).
- When the microprocessor package is positioned correctly, press it
with minimal pressure to fully seat it in the ZIF socket.
- When the microprocessor package is fully seated, pivot the release
lever back toward the system board until it snaps into place, securing the microprocessor
package.
Figure 29. Microprocessor Package Replacement
 |
| 1 |
Microprocessor package |
| 2 |
ZIF socket |
| 3 |
Pin-1 (alignment corner) |
|
- Unpack the heat sink included in your upgrade kit.
NOTICE: Do not reuse the old heat sink when replacing the
microprocessor package. Doing so can cause the microprocessor to overheat because of an
inadequate amount of thermal compound between the heat sink assembly and the
microprocessor package.
- Replace the heat sink assembly.
- Peel the release liner from the adhesive tape that is attached to the bottom of the new
heat sink assembly.
- Place the heat sink assembly on top of the microprocessor package.
- Orient the metal retaining clip as shown in Figure 30, and
hook the unhinged end of the clip over the tab on the top edge of the ZIF socket.
- Press down on the hinged end of the clip to snap the clip over the tab on the bottom
edge of the ZIF socket.
Figure 30. Heat Sink Assembly Replacement
 |
| 1 |
Retaining clip |
| 2 |
Heat sink assembly |
| 3 |
Microprocessor package |
| 4 |
ZIF socket |
|
- Replace the airflow shroud by placing the shroud over the top of the
microprocessor/heat sink assembly.
- Fit the mouth of the shroud into the alignment slot on the left side
of the cooling fan and between the fan and the power supply bracket on the right.
- Squeeze the release tabs on the sides of the shroud and lower it
until the clips on the bottom of the shroud engage the top of the heat sink assembly (see Figure 31).
Figure 31. Airflow Shroud Replacement
 |
| 1 |
Airflow shroud |
| 2 |
Release tabs |
| 3 |
Microprocessor/heat sink assembly |
|
- Rotate the power supply back into position, making sure that the
securing tab snaps into position.
- Replace the computer cover, reconnect the computer and peripherals to
their power sources, and turn them on.
To remove the system cooling fan in the midsize chassis, perform the
following steps.
Figure 32. System Cooling Fan
Removal
 |
| 1 |
Locking tab |
| 2 |
Cooling fan |
|
- Rotate the system power supply out of the way.
- Disconnect the fan power cable from the fan power connector on the
system board (see Figure 19).
- Gently pull the plastic locking tab, and slide the fan toward the
power supply to disengage the four latching tabs holding the fan to the back of the
chassis.
- Pull the fan forward and away from the back panel to remove it.
Checking System Functions
As the system boots, it detects the presence of the new microprocessor and
automatically changes the system configuration information in System Setup.
| |
NOTE: After you remove and replace the cover, the
chassis intrusion detector will cause the following message to be displayed at the next
system start-up: ALERT! Cover was previously
removed. |
- Enter System Setup and confirm that the system data area correctly
identifies the type of installed microprocessor.
| |
NOTE: For instructions on using System Setup, see
the online System User's Guide. |
- While in System Setup, reset the Chassis Intrusion option by
pressing the left- or right-arrow key to select Reset and then choosing Enabled,
Enabled-Silent, or Disabled.
See the online System User's Guide for detailed information on
the chassis intrusion detector.
| |
NOTE: If a setup password has been assigned by
someone else, contact the network administrator for information on resetting the chassis
intrusion detector. |
- Run the Dell Diagnostics to verify that the new processor is
operating correctly.
Figure 33. System Battery Removal
| |
CAUTION: There is a danger of the 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. |
To remove the system battery, perform the following steps:
- If possible, enter System Setup and print the System Setup screens.
- Remove the computer cover.
- Remove the system battery by carefully prying it out of its socket
with your fingers or with a blunt, nonconducting object such as a plastic screwdriver.
When you replace the system battery, orient the new battery with the
"+" facing up. Insert the battery into its socket and snap it into place.
Figure 34. System Board Removal
To remove the system board in the midsize chassis, perform the following steps:
- Disconnect all cables from their connectors at the back of the computer, observing all
safety precautions in "Precautionary Measures."
- Remove the expansion-card cage.
- Rotate the power supply out of the away.
- Remove the hard-disk drive/bracket assembly.
- Disconnect all cables from the system board.
- Remove the screw that secures the existing system board to the bottom
of the chassis (see Figure 34).
Before you remove the existing system board, visually compare the
replacement system board to the existing system board to make sure that you have the
correct part.
- Slide the system board toward the front of the chassis until it
stops.
- Carefully lift the system board out of the chassis (lift evenly and
do not twist the system board). Place the system board that you just removed next to the
replacement system board.
To replace a system board in the midsize chassis, perform the following steps:
- Transfer components from the existing system board to the replacement
system board.
- Remove the DIMMs and install them on the replacement board.
- Remove the microprocessor package from the existing system board and
transfer it to the replacement system board.
- Configure the settings of the replacement system board.
Set the jumper on the replacement system board so it is identical to
the one on the existing board.
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NOTE: Some components and connectors on the
replacement system board may be in different locations than the corresponding connectors
on the existing system board. |
- Orient the replacement system board in the computer chassis. Push
down near each slot to engage the grounding clip onto its corresponding chassis tab.
- Push evenly on both sides of the system board as you slide and lock
it into position (do not twist the system board).
- Replace the screw that secures the system board to the chassis.
- Replace any components that you removed from the system board.
- Reconnect any cables that you disconnected from the system board.
- Replace the hard-disk drive/bracket assembly.
- Rotate the power supply back into position.
- Replace the expansion-card cage.
- Replace the computer cover.
- Reconnect all cables to their connectors at the back of the computer.
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