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Low-Profile Chassis - Removing and Replacing Parts: Dell OptiPlex GX110 Systems
Service Manual
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Low-Profile 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 low-profile chassis GX110 system.
Unless otherwise noted, each procedure assumes that the following
conditions exist:
Most of the procedures in this manual require the use of one or more of the following
tools:
- Small flat-blade screwdriver
- Wide flat-blade screwdriver
- #1 and #2 Phillips-head screwdrivers
- 1/4-inch nut driver
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 attached peripherals.
- Disconnect the computer and peripherals from their AC power sources.
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 AC power 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 17).
|
Figure 1 shows a top view of the low-profile chassis to help orient you when you work
inside the computer.
Figure 1. Low-Profile Chassis Orientation
View
 |
| 1 |
System board |
| 2 |
Hard-disk drive |
| 3 |
Power supply |
| 4 |
Externally accessible drive bays |
|
Figure 2 shows the low-profile chassis with the cover removed.
Figure 2. Inside the Low-Profile Chassis
 |
| 1 |
Diskette drive in upper bay |
| 2 |
Diskette drive interface cable |
| 3 |
Hard-disk drive interface cable |
| 4 |
Hard-disk drive |
| 5 |
Chassis intrusion switch |
| 6 |
Expansion-card cage |
| 7 |
Expansion-card slots |
| 8 |
Security cable slot |
| 9 |
I/O ports and connectors |
| 10 |
AC power receptacle |
| 11 |
Padlock ring |
| 12 |
Power supply |
|
Figure 3. Computer Cover Removal
To remove the low-profile 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."
- Press in to retract the padlock ring into the cover (this permits
opening of the cover).
- 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.
- Disengage the tabs that secure the cover to the top of the chassis,
and lift the cover away.
Figure 4. Computer Cover Replacement
To replace the low-profile chassis computer cover, perform the following steps:
- Face the front of the computer and hold the cover at a slight angle
(Figure 4).
- Align the bottom of the cover with the bottom of the chassis and
insert the hooks on the cover into the recessed slots on the computer chassis so that the
tabs catch the hooks inside the slots.
- Pivot the cover down toward the back of the chassis and into
position.
Make sure that the securing buttons click into place.
- If you wish to install a padlock, slide the padlock ring out of the
cover.
Make sure that the 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. Eject, Power, and Reset Button Removal
 |
| 1 |
Disk eject button |
| 2 |
Reset button |
| 3 |
Power button |
|
To remove the eject, power, and reset buttons in the low-profile
chassis, perform the following steps:
- Lay the computer cover on a flat work surface, with the inside of the
top cover facing up.
- To remove the 3.5-inch diskette-drive eject button, pull gently on
the plastic part of the button until it comes free.
- To remove the power button or the reset button, use a small
screwdriver and push in the two or three plastic clips that hold the button to the
bezel. When these clips are released, the buttons come free from the bezel.
Figure 6. 5.25-Inch Front-Panel Insert Removal
 |
| 1 |
Posts (2) |
| 2 |
Front of top cover |
| 3 |
Ring tabs (2) |
|
To remove a 5.25-inch front-panel insert in the low-profile 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 in the low-profile chassis, 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 7. Control Panel Removal
 |
| 1 |
Control panel |
| 2 |
Chassis intrusion switch |
|
To remove the control panel in the low-profile chassis, perform the
following steps:
- Disconnect the control panel cable from the control panel connector
on the system board (see "System Board Labels"
for the location of the PANEL connector).
Note the routing of the control panel cable as you remove it from the chassis.
- From inside the chassis, remove the mounting screw that secures the
control panel to the chassis.
- Disconnect the chassis intrusion switch cable connector from the
control panel.
- Remove the control panel from the chassis.
Note the routing of the control panel cable as you remove it from the
chassis.
When you reinstall the control panel, be sure to put the right side of the control
panel behind the mounting tab.
Figure 8. Chassis Intrusion Switch Removal
 |
| 1 |
Control panel |
| 2 |
Chassis intrusion switch |
|
To remove the chassis intrusion switch in the low-profile chassis, perform the
following steps:
- Disconnect the chassis intrusion switch cable connector from the control panel on the
front of the chassis.
Note the routing of the chassis intrusion cable as you remove it from the chassis. Chassis
hooks may hold the cable in place inside the chassis.
- Slide the chassis intrusion switch out of its slot and remove the switch and its
attached cable from the chassis (see Figure 8).
- 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. |
Figure 9. Drive Locations
 |
| 1 |
5.25-inch drive |
| 2 |
3.5-inch diskette drive |
| 3 |
Hard-disk drive |
| 4 |
Chassis intrusion switch |
|
To remove the 3.5-inch diskette drive assembly from the drive shelf, perform the
following steps:
- Disconnect the power cable and the interface cable from the back of
the drive.
- Press both release latches on the left side of the 3.5-inch diskette
drive.
- Pivot the 3.5-inch diskette drive upward 1 inch (2.5 cm), and then
pull the drive away from the notched tabs on the right chassis wall.
- Remove the bracket from the diskette drive you just removed.
5.25-inch Drive
To remove the 5.25-inch drive/bracket assembly, perform the following steps:
- Remove the diskette drive
and bracket.
- Disconnect the power cable and interface cable from the drive.
- Lift the 5.25-inch drive/bracket straight up and out of the chassis.
Hard-Disk Drive Removal
Figure 10. Hard-Disk
Drive/Bracket Assembly Removal
 |
| 1 |
Captive screw |
| 2 |
Hinge tabs on back of drive bracket (2)
|
| 3 |
Slots in floor divider (3) |
|
To remove the hard-disk drive/bracket assembly in the low-profile chassis, perform the
following steps:
- If you are replacing a hard-disk drive that contains data you want to
keep, make a backup copy of your files before you continue this procedure.
- Disconnect the power cable and interface cable from the drive.
- Loosen the captive screw securing the hard-disk drive/bracket to the
bottom of the chassis.
- Grasp the drive/bracket, and pivot it upward from the chassis until
the two hinge tabs (located on the side opposite the screw) clear the floor divider (see
Figure 10). Then lift the bracket upward and out of the chassis.
- To remove the hard-disk drive from the bracket, place the
drive/bracket on a flat surface with the bracket facing up.
- Remove the four screws securing the
hard-disk drive to the bottom of the bracket (see Figure 11).
Figure 11. Hard-Disk Drive to Bracket Installation
 |
| 1 |
Hard-disk drive |
| 2 |
Bracket |
| 3 |
Screws (4) |
|
To install a replacement hard-disk drive in the low-profile chassis, perform the
following steps.
| |
CAUTION: To avoid the possibility of electric
shock, turn off the computer and any peripherals, disconnect them from electrical outlets,
and then wait at least 15 seconds before you remove the computer cover. Also, before you
install a drive, see the other precautions in "Precautionary
Measures." |
NOTICE: To avoid damaging the drive by ESD, ground yourself by touching an unpainted
metal surface on the back of the computer.
NOTICE: When you unpack the drive, do not set it on a hard surface,
which may damage the drive. Instead, set the drive on a surface, such as a foam pad, that
will sufficiently cushion it.
- Prepare the drive for installation.
Check the documentation for the drive to verify that it is configured for your computer
system.
- If not already done, remove the computer cover.
- To install the hard-disk drive to the bracket, place the drive
top-down on a flat surface with the bracket mounting holes facing up.
- Attach the new hard-disk drive to the bracket with the four screws
you removed in step 6 of the previous procedure.
- Insert the bracket's hinge tabs into the chassis slots so that the
tabs hook over the slots.
- Rotate the bracket toward the chassis floor and secure the bracket
with a screw.
- Connect a power cable to the power input connector on the back of the
drive.
- Connect one of the device connectors on the interface cable to the
40-pin interface connector on the back of the hard-disk drive.
- Check all connectors to ensure that they are properly cabled and
firmly seated.
Figure 12. Hard-Disk Drive Cable Attachment
 |
| 1 |
Power cable |
| 2 |
EIDE interface cable |
| 3 |
IDE1 connector on system board |
|
NOTICE: You must attach the blue connector on the EIDE interface cable to the IDE1
connector on the system board to avoid possible damage to your system.
NOTICE: You must match the red colored stripe on the EIDE cable with
pin 1 on the drive's interface connector to avoid possible damage to your system.
NOTICE: You must match the red colored stripe on the EIDE interface
cable with pin 1 on the IDE1 connector to avoid possible damage to your system.
- If it is not already connected, connect the blue connector on the
EIDE interface cable to the IDE1 connector on the system board.
To locate the IDE1 connector on the system board, see "System
Board Components."
- Replace the computer cover. Then reconnect your computer and
peripherals to their electrical outlets, and turn on the peripherals.
- If the drive you just installed is the primary drive, insert a
bootable system diskette into drive A.
- Turn on the computer system.
- Enter System Setup and update the Primary Drive option, 0 or 1 (see
the online System User's Guide for complete information).
- After you update the System Setup settings, reboot the system.
- Partition and logically format your drive before you proceed to the
next step.
See the documentation for your operating system for instructions.
| |
NOTE: On systems with hard-disk drives larger than
2 GB, create a primary partition of 2 GB and divide the remaining capacity into partitions
of 2 GB or less. For example, a system with a 2.5-GB hard-disk drive would have a primary
partition of 2 GB (drive C) and a second partition of 500 MB (drive D). Hard-disk drives
must be partitioned this way because MS-DOS�—based operating systems (including
Microsoft� Windows NT�, when using a FAT16 file system) do not support drive partitions
larger than 2 GB. |
- Test the hard-disk drive by running the Dell Diagnostics (see the
online System User's Guide for complete information.
- If the drive you just installed is the primary drive, install your
operating system on the hard-disk drive.
For instructions, refer to the documentation that came with your operating system.
Figure 13. Power Supply Removal
 |
| 1 |
AC power cord |
| 2 |
AC power receptacle |
| 3 |
Power supply |
| 4 |
DC power cables |
| 5 |
Securing screw |
|
To remove the system power supply in the low-profile chassis, perform the following
steps:
- Disconnect the AC power cable from the back of the power supply.
- Disconnect the DC power cables from the system board and the
drives.
Note the routing of the DC power cables underneath the tabs in the chassis as you remove
them from the system board and drives. It is important to route these cables properly when
you replace them to prevent them from being pinched or crimped.
- Remove the screw below the fan guard on the back of the chassis.
- Slide the power supply toward the front of the computer approximately
1 inch.
- Lift the power supply up and out of the chassis.
Figure 14. Expansion-Card
Cage Removal
 |
| 1 |
Securing lever |
| 2 |
Expansion-card cage |
| 3 |
Slots (2) |
| 4 |
Tabs (2) |
|
To remove the expansion-card cage in the low-profile chassis, perform the following
steps:
- Remove the computer cover.
- Examine any cables connected to
expansion cards through the back-panel openings and disconnect any cables that will not
extend to where the cage must be placed when it is removed from the chassis.
- Locate the securing lever (see Figure 14) and rotate the lever
upward until it stops in an upright position.
- Slide the expansion-card cage out of the chassis.
- Lift the expansion-card cage up and away from the chassis.
To replace the expansion-card cage in the low-profile chassis,
perform the following steps:
- With the securing lever in the upright position, align the
expansion-card cage slots with the tabs in the chassis opening for the expansion-card cage
(see Figure 14). Slide the expansion-card cage into place.
- Rotate the securing lever downward until it is flush with the top of
the chassis. Make sure that the riser board is fully seated in the RISER connector on the
system board.
- Reconnect any cables you removed in step
2 of the previous procedure.
The low-profile chassis has a standard PCI riser board (see Figure
15) or an optional PCI/ISA riser board (see Figure 16). The PCI riser board provides three
PCI expansion-card slots. The PCI/ISA riser board provides one PCI expansion-card slot,
one ISA expansion-card slot, and one shared PCI/ISA expansion-card slot.
Figure 15. PCI Riser Board (Standard)
 |
| 1 |
Auxiliary power LED (AUX_LED)
|
| 2 |
Remote Wakeup header (WOL) |
| 3 |
PCI expansion-card connector 1 (PCI1)
|
| 4 |
PCI expansion-card connector 2 (PCI2)
|
| 5 |
PCI expansion-card connector 3 (PCI3)
|
|
Figure 16. PCI/ISA Riser Board (Optional)
 |
| 1 |
Auxiliary power LED (AUX_LED)
|
| 2 |
ISA expansion-card connector 1 (ISA1)
|
| 3 |
ISA expansion-card connector 2 (ISA2)
|
| 4 |
Remote Wakeup header (WOL) |
| 5 |
PCI expansion-card connector 1 (PCI1)
|
| 6 |
PCI expansion-card connector 2 (PCI2)
|
|
|
NOTE: The ISA expansion-card connector 1 and PCI
expansion-card connector 2 share an expansion slot; only one of these two connectors can
be used at any given time. |
To remove a riser board in the low-profile chassis, perform the
following steps.
- Remove the expansion-card cage.
- Remove the expansion cards
installed in the slots.
- Remove the screws securing the riser board to the expansion-card
cage.
- Lift the riser board off the expansion-card cage.
The subsections that follow contain procedures for removing system board components,
which are shown in Figure 17.
Figure 17. 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 18 shows the location of the PSWD jumper on the system board.
Figure 18. System Board Jumper
Table 1 lists the labels for connectors and sockets on your 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 low-profile GX110 chassis accommodates up to three 32-bit PCI expansion cards
(standard).
The low-profile chassis also accommodates an optional configuration
that supports one PCI expansion-card slot, one ISA expansion-card slot, and one shared
PCI/ISA expansion-card slot. Figure 19 shows an example of an 8-bit ISA expansion card,
16-bit ISA expansion card, and a 32-bit PCI expansion card.
Figure 19.
Expansion Cards
 |
| 1 |
8-bit ISA expansion card |
| 2 |
16-bit ISA expansion card |
| 3 |
32-bit PCI expansion card |
|
To remove an expansion card, perform the following steps:
- Remove the computer cover.
- If necessary, disconnect any cables connected to the card.
- Remove the screw on 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 computer cover, and reconnect your computer and
peripherals to their power sources and turn them on.
| |
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. |
- 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 the online System
User's Guide for detailed information on the 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. |
Figure 20. Expansion Card Replacement
 |
| 1 |
Expansion card |
| 2 |
Card-edge connector |
| 3 |
Riser board |
| 4 |
Expansion-card connector |
| 5 |
Expansion-card cage |
|
| |
CAUTION: Some network cards automatically start the
system when they are connected. To guard against electrical shock, be sure to unplug your
computer from its electrical outlet before installing any expansion cards.
|
To install an expansion card in the low-profile chassis, 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.
- Remove the screw and remove the metal
filler bracket that covers the opening for the expansion-card slot you intend to use (see
Figure 21).
Save the screw to use when installing the expansion card later in this procedure.
Figure 21. Filler Bracket Removal
- 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.
- 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
2.
- Connect any cables that should be attached to the card.
See the documentation for the card for information about the card's cable connections.
- Replace the computer cover, and
reconnect your computer and peripherals to their power sources and turn them on.
| |
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. |
- 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 the 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. |
Figure 22. DIMM Removal
To remove a DIMM, perform the following steps:
- Push outward on the two DIMM socket ejectors simultaneously 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 23).
Figure 23. DIMM Installation
 |
| 1 |
Ejectors (2) |
| 2 |
Notches (2) |
|
Removing the Cooling Fan, Heat Sink Assembly, and Microprocessor Package
To remove the cooling fan, heat sink assembly, and microprocessor package, perform the
following steps.
- Remove the computer cover, observing all
safety precautions.
- Disconnect the cooling fan power cable from the fan power connector
on the system board.
- Remove the two thumbscrews securing the cooling fan to the heat sink
assembly.
- Lift the cooling fan off the heat sink assembly (see Figure 24).
Figure 24. Cooling Fan Removal
 |
| 1 |
Thumbscrews (2) |
| 2 |
Cooling fan |
| 3 |
Retaining clip |
| 4 |
ZIF socket |
| 5 |
Heat sink assembly |
|
- Remove the metal retaining clip 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 (see Figure 25).
Figure 25. Retaining Clip and 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 or releases the
microprocessor package (see Figure 26) from the ZIF socket.
- Pull the socket release lever straight out until the microprocessor
package is released.
- Remove the microprocessor package from the socket.
Leave the release lever extended so that the socket is ready for the
new microprocessor package.
Figure 26. Microprocessor Package Removal
 |
| 1 |
Microprocessor package |
| 2 |
Socket release lever |
| 3 |
ZIF socket |
|
Microprocessor Package, Heat Sink Assembly, and Cooling Fan Replacement
To replace the microprocessor package, heat sink assembly, and
cooling fan, perform the following steps.
- Unpack the new microprocessor package.
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 27).
- 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 27. 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 28, 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 28. Heat Sink Assembly Replacement
 |
| 1 |
Retaining clip |
| 2 |
Heat sink assembly |
| 3 |
Microprocessor package |
| 4 |
ZIF socket |
|
- Replace the cooling fan on top of the heat sink assembly, and secure
the fan with the two thumbscrews.
- Reconnect the cooling fan power cable to its system board connector.
- Replace the computer cover, reconnect the computer and peripherals to
their power sources, and turn them on.
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 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 29. 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 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 30. System Board Removal
To remove the system board, perform the following steps:
- Disconnect all cables from their connectors at the back of the
computer.
- Remove the expansion-card cage.
- Disconnect all cables from the system board.
- Remove the screw that secures the system board to the bottom of the
chassis.
- Slide the system board toward the front of the chassis until it
stops.
- Carefully lift the system board out of the chassis (be sure to lift
evenly and not twist the system board).
To replace the system board, perform the following steps:
- Remove the DIMMs, microprocessor package, heat sink assembly,
and cooling fan. Install them on the replacement board.
- Set the jumper on the new system board so it is identical to the one
on the old board.
- Push down near each slot to engage the grounding clip onto its
corresponding 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 the expansion-card cage.
- Replace the computer cover.
- Reconnect all cables to their connectors at the back of the computer.
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