Dell™ OptiPlex™ GX240
SERVICE MANUAL
www.dell.com
support.dell.com
Contents
1 Before You Begin
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Recommended Tools .
10
Precautionary Measures
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10
2 Computer Cover
Opening the Computer Cover
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14
17
Closing the Computer Cover .
3 Inside the Computer
Key Components
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20
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Computer Cables .
4 Battery
Removing the Battery
Replacing the Battery
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28
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5 Badge
Removing the Badge
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30
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Small Form-Factor Computer .
Small Desktop and Small Mini-Tower Computers
Contents
3
Replacing the Badge .
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31
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33
Small Desktop and Small Mini-Tower Computers .
6 Chassis Intrusion Switch
Removing the Chassis Intrusion Switch .
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36
38
39
Resetting the Chassis Intrusion Detector .
Removing the Control Panel .
Small Form-Factor Computer
Small Desktop Computer .
Small Mini-Tower Computer .
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Replacing the Control Panel .
Small Form-Factor Computer
Small Mini-Tower Computer .
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45
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7 Drives
Removing the Floppy Drive
Small Form-Factor Computer
Small Desktop Computer .
Small Mini-Tower Computer .
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50
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Replacing the Floppy Drive
Small Form-Factor Computer
Small Desktop Computer .
Small Mini-Tower Computer .
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58
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Removing the CD/DVD Drive
Small Form-Factor Computer
Small Desktop Computer .
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60
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62
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4
Contents
Small Mini-Tower Computer .
Replacing the CD/DVD Drive .
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Small Form-Factor Computer .
Small Desktop Computer
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Small Mini-Tower Computer .
Removing the Hard Drive .
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77
Small Form-Factor Computer .
Small Desktop Computer
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Small Mini-Tower Computer .
Replacing the Hard Drive .
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82
Small Form-Factor Computer .
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Small Mini-Tower Computer .
Adding a Second Hard Drive — Small Mini-Tower Computer
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83
Expansion Card Types
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88
Removing an Expansion Card
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Small Form-Factor Computer .
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Replacing an Expansion Card
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92
Small Form-Factor, Desktop, and Mini-Tower Computers
92
Removing an AGP Graphics Card .
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Small Form-Factor Computer .
Small Desktop Computer
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Small Mini-Tower Computer .
Replacing an AGP Graphics Card .
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99
Contents
5
9 Expansion Card Cage (Small Desktop Computer Only)
Removing the Expansion-Card Cage
Replacing the Expansion-Card Cage
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. 102
. 102
. 103
. 103
Removing the PCI Riser Board
Replacing the PCI Riser Board
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10 Front-Panel Inserts
Removing Front-Panel Inserts .
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. 106
Replacing Front-Panel Inserts .
. 110
11 I/O Panel
Removing the Front I/O Panel .
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. 112
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. 115
Small Form-Factor Computer
Small Mini-Tower Computer .
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Replacing the Front I/O Panel .
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. 116
12 Memory
Removing a Memory Module
Replacing a Memory Module
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. 118
. 118
13 Microprocessor
Removing the Cooling Fan/Heat-Sink Assembly and Microprocessor
122
Replacing the Cooling Fan/Heat-Sink Assembly and Microprocessor .
126
6
Contents
14 Power Supply
Removing the Power Supply
Replacing the Power Supply
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132
135
15 System Board
System Board Components .
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138
141
142
Removing the System Board .
Replacing the System Board .
Contents
7
8
Contents
Getting Started
This section provides procedures for removing and replacing the
components, assemblies, and subassemblies in the Dell™ OptiPlex™
GX240 small form-factor, small desktop, and small mini-tower computers.
Unless otherwise noted, each procedure assumes that the following
conditions exist:
•
•
You have performed the steps in "Precautionary Measures."
You have opened the computer cover.
Recommended Tools
The GX240 computer is primarily a tool-less one, but certain procedures
(such as removing the heat sink blower or the control panel) require the use
of one or more of the following tools:
•
•
•
Small flat-blade screwdriver
#1 and #2 Phillips-head screwdrivers
An 8-inch, #2 Phillips-head screwdriver
Also, Dell recommends that you use a wrist grounding strap as explained in
"Precautionary Measures."
Precautionary Measures
Before you perform any procedure in this section, read the following caution
for your personal safety and to prevent damage to the computer from
electrostatic discharge (ESD).
CAUTION: FOR YOUR PERSONAL SAFETY AND PROTECTION OF
THE EQUIPMENT
Before you start to work on the computer, perform the following steps in the
sequence listed:
1
2
Perform an orderly computer shutdown using the operating system
menu.
Turn off the computer and all attached devices.
10
Before You Begin
3
Disconnect the computer and devices 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 device from the computer or are removing a
component from the system board, wait 15 to 30 seconds after
disconnecting the computer from AC power before disconnecting the
device or removing the component to avoid possible damage to the
system board.
Verify that the auxiliary power light on the system board is not on. If it
is on, you may need to wait 15 to 30 seconds for it to go out (see
"System Board Components" for the location of this light).
4
Wear a wrist grounding strap, and clip it to an unpainted metal
surface, such as the padlock ring on the back of the computer. If a wrist
grounding strap is not available, touch an unpainted metal surface on
the computer, such as the power supply, to discharge static charge from
your body before touching anything inside the computer. While you
work, periodically touch an unpainted metal surface on the computer
to dissipate static electricity that might harm internal components.
In addition, take note of the following safety guideline when appropriate:
•
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.
Before You Begin
11
12
Before You Begin
Small Desktop Computer
1
2
1
2
Padlock ring
Release buttons (one on each side)
Computer Cover
15
Small Mini-Tower Computer
1
2
1
2
Padlock ring
Release buttons (one on each side)
1
Remove the padlock from the padlock ring, if present.
NOTICE: Do not open the cover if the computer is on the edge of a desk or
table. Doing so may cause the computer to tip over and fall. Make sure that the
computer is situated so that there is at least 12 inches of desk- or table-top for
the cover to rest on.
NOTICE: Open the computer cover slowly to prevent damage to the system
cables.
2
Press in on the two securing buttons until the cover is free to swing up.
NOTICE: On the small mini-tower computer, to prevent damage to the system
board, open the cover until it catches at a 45-degree angle. Then remove the
drive data cables from the system board and open the cover to a 90-degree
angle.
16
Computer Cover
Closing the Computer Cover
1
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.
2
3
4
Check to see that no tools or extra parts (including screws) are left
inside the computer.
On the small mini-tower computer, close the cover to a 45-degree
angle and connect the drive data cables to the system board.
Close the computer cover by pivoting the cover down toward the back
of the computer and into position. Make sure that the securing
buttons click into place.
5
NOTE: After you open and close the cover, the chassis intrusion detector
causes the following message to be displayed at the next computer start-
up:
ALERT! Cover was previously removed.
See "Resetting the Chassis Intrusion Detector" for instructions.
Computer Cover
17
18
Computer Cover
Key Components
Small Form-Factor Computer
NOTE: User service
access points are color-
coded green.
2
3
1
4
5
6
12
11
7
10
8
9
1
2
3
4
5
6
Hard drive
7
8
9
System board
Power supply
3.5-inch floppy drive
CD/DVD drive
AC power connector
Cover release buttons (2)
Internal speaker
10 I/O ports and connectors
11 Padlock ring
Chassis intrusion switch
12 Heat sink and blower assembly
20
Inside the Computer
Small Desktop Computer
14
13
1
2
12
3
4
11
5
10
6
9
8
7
1
2
3
4
5
6
7
Cover release buttons (2)
Hard drive
8
9
AC power connector
Padlock ring
Internal speaker
10 I/O ports and connectors
11 Heat sink and blower assembly
12 System board
Chassis intrusion switch
Expansion-card cage
Power supply
13 3.5-inch floppy drive
14 CD/DVD drive
Expansion-card slots
Inside the Computer
21
Small Mini-Tower Computer
1
2
13
12
11
10
3
4
9
8
5
7
6
1
2
3
4
5
6
7
Cover release buttons (2)
Hard drive
8
9
AC power connector
Padlock ring
Internal speaker
10 Microprocessor and airflow shroud
11 Power supply
Chassis intrusion switch
System board
12 3.5-inch floppy drive
13 CD/DVD drive
Expansion-card slots
I/O ports and connectors
22
Inside the Computer
Computer Cables
Small Form-Factor Computer
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
CD/DVD drive data cable
Floppy drive data cable
Control panel cable
6
7
8
9
IDE data cable (hard drive)
Input/output cable
Input/output audio cable
Microprocessor power cable
CD/DVD drive power cable
IDE drive power cable (hard drive) 10 CD/DVD audio cable
Inside the Computer
23
Small Mini-Tower Computer
3
4
5
6
7
8
9
2
1
1
2
3
4
5
CD/DVD drive power cable
CD/DVD drive audio cable
CD/DVD drive data cable
Floppy drive power cable
Floppy drive data cable
6
7
8
9
IDE drive power cable (hard drive)
IDE drive data cable (hard drive)
Input/output cable
Input/output audio cable
Inside the Computer
25
Cable Colors
Device
Color
Hard drive
Floppy drive
CD/DVD drive
USB
Blue
Black
Orange
Gray
ATA, IDE, or EIDE drive Green
Control panel
Yellow
Blue
CD/DVD audio
Computer audio
Black
26
Inside the Computer
Removing the Battery
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.
1
2
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.
Replacing the Battery
1
2
Orient the new battery with the "+" facing up.
Insert the battery into its socket and snap it into place.
28
Battery
Removing the Badge
Small Form-Factor Computer
1
2
Open the computer cover.
Using a flat-blade screwdriver, release the tabs from the inside of the
computer and remove the plastic computer cover from the metal
component.
Computer Cover Removal
1
1
Tabs (2 on each side)
3
4
5
Remove the accent door by pressing the middle of the door while
lifting away the sides of the door.
From inside the front bezel, push in on the two tabs on either side of
the badge to release the badge.
Press on the badge until it is freed.
30
Badge
Small Desktop and Small Mini-Tower Computers
1
2
Open the front USB door.
From inside the door, push in the two tabs on either side of the badge
to release the badge.
3
Press on the badge until it is freed.
Replacing the Badge
Small Form-Factor Computer
1
Replace the plastic computer cover. Make sure that the two metal
hooks and tabs are securely in place.
Badge
31
Computer Cover Replacement
1
1
Metal hooks (2)
To help replace the plastic computer cover, remove the accent door and
front mask from the plastic computer cover:
a
Remove the front mask by releasing the tabs on the inside of the
plastic computer cover.
b
Remove the accent door by pressing the middle of the door while
lifting away the sides of the door.
c
After replacing the plastic computer cover, snap the front mask
and accent door into place.
32
Badge
Front Mask and Accent Door Removal
1
2
1
2
Accent door
Front mask
2
Replace the badge by pressing it into place, ensuring that the two tabs
click, securing it into position.
Small Desktop and Small Mini-Tower Computers
Replace the badge by pressing it into place, ensuring that the two tabs click,
securing it into position.
Badge
33
34
Badge
Small Desktop Computer
Chassis Intrusion Switch
37
Small Mini-Tower Computer
1
2
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.
Replacing the Chassis Intrusion Switch
To replace the chassis intrusion switch, follow the "Removing the Chassis
Intrusion Switch" procedures in reverse order.
38
Chassis Intrusion Switch
Resetting the Chassis Intrusion
Detector
1
Enter system setup by pressing <F2> during the computer's POST.
NOTE: For instructions on using system setup, see the User's Guide.
2
Under the System Security tab, reset the Chassis Intrusion option by
pressing the left- or right-arrow key to select Reset. Change the setting
to Enabled, Enabled-Silent, or Disabled.
NOTE: The default is Enabled-Silent.
3
Press <Alt><B> to restart the computer and implement your
changes.
NOTE: If a setup
password has been
assigned by someone else,
contact the network
administrator for
information on resetting
the chassis intrusion
detector.
Chassis Intrusion Switch
39
40
Chassis Intrusion Switch
S E C T I O N 7
Control
Panel
Control Panel Removal
2
Remove the screw holding the control panel to the computer, and pull
the panel up and away from the computer.
Small Mini-Tower Computer
1
2
Lay the computer on its right side and open the cover.
Remove the top and bottom panels of the computer by releasing the
eight tabs on each panel.
3
Remove the front bezel:
a
Release the three tabs located on the front bezel: one tab is
located by the CD/DVD drive and two tabs are located by the I/O
panel.
44
Control Panel
Front Bezel Tabs—Small Mini-Tower Computer
1
2
4
3
1
2
3
4
Top panel
Bottom panel
Front-panel tabs (3)
Top-panel tabs (8)
b
Close the cover and remove the front bezel.
Control Panel
45
Control Panel Removal
4
Remove the screw holding the control panel to the chassis, and pull
the panel up and away from the chassis.
Replacing the Control Panel
Small Form-Factor Computer
1
2
Replace the control panel and the control-panel shield.
Replace the plastic computer cover. Make sure that the two metal
hooks and tabs are securely in place.
46
Control Panel
Computer Cover Replacement
1
1
Metal hooks (2)
To help replace the plastic computer cover, remove the accent door
and front mask from the plastic computer cover:
a
Remove the front mask by releasing the tabs on the inside of the
plastic computer cover.
b
Remove the accent door by pressing the middle of the door while
lifting away the sides of the door.
c
After replacing the plastic computer cover, snap the front mask
and accent door into place.
Control Panel
47
Front Mask and Accent Door Removal—Small Form-Factor
Computer
1
2
1
Accent door
Small Desktop Computer
1
the screw you removed in step 2 of the removal procedure.
2
Replace the front I/O panel.
Small Mini-Tower Computer
Follow the “Removing the Control Panel” procedure in reverse, ensuring
that the tabs on the top panel, bottom panel, and front panel are secure.
48
Control Panel
Removing the Floppy Drive
Small Form-Factor Computer
1
2
3
Disconnect the floppy-drive cable from the system board.
Remove the power cable from the interposer board.
Disconnect the CD/DVD drive cable and the power cable from the
CD/DVD drive.
4
5
Remove or raise the drive by pressing the green tabs on either side of
the drive and lifting the drive up.
Remove the floppy-drive cable from the floppy drive.
a
Remove the interposer board from the floppy drive by pressing the
tab and rotating the interposer board.
Removing the Interposer Board—Small Form-Factor
Computer
1
2
1
2
3
3
or
4
4
1
Floppy-drive cable
Tab
2
3
4
Interposer board
System board floppy-drive connector (DSKT)
50
Drives
b
To release the floppy-drive cable from the connector, slide the
lever until it is fully extended, and then lift the cable away.
Drives
51
Removing the Floppy-Drive Cable
1
2
or
1
2
52
Drives
1
2
Floppy-drive cable
Lever
6
Remove the floppy drive from its sled by pulling the sled tab out while
pushing the drive up, and then sliding the drive out of the sled.
Small Desktop Computer
1
Disconnect the power cable and the floppy-drive data cable from the
drive.
2
Disconnect the data cable from the floppy-drive connector on the
system board.
Cable Removal
1
2
3
1
2
3
Power cable
Floppy-drive data cable
Floppy-drive connector
Drives
53
3
4
Press inward on the two tabs on the sides of the drive bay to disengage
the drive from the computer.
Slide the drive upward and remove it from the computer.
Floppy-Drive Removal
5
If the replacement drive does not have the bracket rails attached,
remove the rails from the old drive by removing the two screws that
secure each rail to the drive.
Drive Bracket Rail Removal
54
Drives
Small Mini-Tower Computer
1
Disconnect the power cable and the floppy-drive data cable from the
drive.
2
Disconnect the data cable from the floppy-drive connector on the
system board.
Cable Removal
1
2
3
1
2
3
Power cable
Floppy-drive data cable
Floppy-drive connector
Replacing the Floppy Drive
Small Form-Factor Computer
1
Snap the replacement drive into the sled and ensure that it is secure.
Drives
55
2
Connect the interposer board to the floppy drive.
a
b
c
Slide the floppy-drive cable into the connector.
Close the lever so that the cable is secure in the connector.
Line up the hole on the bottom of the interposer board with the
notch on the connector, and snap the interposer board onto the
drive.
3
Gently slide the floppy drive into the computer until the tabs securely
click into position.
56
Drives
Attaching the Floppy-Drive Data Cable
2
1
3
4
or
2
1
3
4
Drives
57
1
2
3
4
Connector notch
Interposer board alignment hole
Floppy-drive cable
Lever
4
Attach the power cable to the interposer board on the floppy drive.
5
6
7
8
9
Attach the CD/DVD drive cable and the power cable to the CD/DVD
drive.
Connect the floppy-drive cable to the DSKT connector on the system
board.
Check all cable connections, and fold cables out of the way to provide
airflow for the fan and cooling vents.
Close the computer cover, reconnect your computer and devices to
their electrical outlets, and turn them on.
Enter system setup and update the appropriate Diskette Drive A
option to reflect the size and capacity of your new floppy drive.
10 Verify that your computer works correctly by running the Dell
Diagnostics.
Small Desktop Computer
1
If the replacement drive does not have the bracket rails attached,
remove the rails from the old drive by removing the two screws that
secure each rail to the drive. Attach the bracket to the new drive by
aligning the screw holes on the drive with the screw holes on the
bracket rails and tightening all four screws (two screws on each rail).
2
3
Gently slide the floppy drive into place until the tabs click securely
into position.
Attach the power and floppy-drive data cables to the floppy drive, and
connect the other end of the data cable to the connector on the system
board.
58
Drives
Cable Replacement
1
2
3
1
2
3
Power cable
Floppy-drive data cable
Floppy-drive connector
Small Mini-Tower Computer
1
If the replacement drive does not have the bracket rails attached,
remove the rails from the old drive by removing the two screws that
secure each rail to the drive. Attach the bracket to the new drive by
aligning the screw holes on the drive with the screw holes on the
bracket rails and tightening all four screws (two screws on each rail).
2
3
Gently slide the floppy drive into place until the tabs click securely
into position.
Attach the power and floppy-drive data cables to the floppy drive, and
connect the other end of the data cable to the connector on the system
board.
Drives
59
Interposer Board Removal
1
1
or
1
Interposer board
2
3
Press inward on the two tabs on the sides of the drive to disengage the
drive from the computer.
Slide the drive upward and remove it from the computer.
Drives
61
Cable Removal
1
2
3
4
1
2
3
4
Power cable
Audio cable
Data cable
Drive connector
2
Press inward on the two tabs on the sides of the drive bay to disengage
the drive from the computer.
3
4
Slide the drive upward and remove it from the computer.
If the replacement drive does not have the bracket rails attached,
remove the rails from the old drive by removing the two screws that
secure each rail to the drive.
Drives
63
Cable Removal
1
2
3
4
1
2
3
4
Power cable
Audio cable
Data cable
Drive connector
2
3
Press inward on the two tabs on the sides of the drive bay to disengage
the drive from the computer.
Slide the drive upward and remove it from the computer.
Drives
65
CD/DVD Drive Removal
4
If the replacement drive does not have the bracket rails attached,
remove the rails from the old drive by removing the two screws that
secure each rail to the drive.
Drive Bracket Rail Removal
66
Drives
Replacing the CD/DVD Drive
Small Form-Factor Computer
1
2
Gently slide the drive into place until the tabs securely click into
position.
Connect the interposer board to the CD/DVD drive.
a
Ensure that the interposer board tab fits securely under the notch
on the inside of the cover.
b
Attach the power and audio cables to the interposer board.
Drives
67
Interposer Board Replacement
1
2
3
or
1
2
3
68
Drives
1
2
3
Interposer board
Notch on inside of cover
Interposer board tab
If your computer came with a CD drive, use the spare connector on
the existing interface cable. Otherwise, use the IDE interface cable
provided in the drive kit.
3
Connect the data, power, and audio cables to the drive.
4
Check all cable connections, and fold cables out of the way to provide
airflow for the fan and cooling vents.
5
If the drive bay was previously empty, remove the front-panel insert
from the front panel.
a
Remove the front-panel cover with your fingers.
Remove the insert by pressing it until it pops free.
b
c
Replace the front-panel piece by snapping it into place.
Small Desktop Computer
1
Gently slide the drive into place until the tabs securely click into
position.
2
Connect the data, power, and audio cables to the drive.
Drives
69
Cable Replacement
1
2
3
4
1
2
3
4
Power cable
Audio cable
Data cable
Drive connector
If your computer came with an IDE CD drive, use the spare connector
on the existing interface cable. Otherwise, use the IDE interface cable
provided in the drive kit.
3
4
If you are installing a drive that has its own controller card, install the
controller card in an expansion slot.
Check all cable connections, and fold cables out of the way to provide
airflow for the fan and cooling vents.
70
Drives
5
If the drive bay was previously empty, remove the front-panel insert
from the front panel.
a
Release the insert tabs from inside the chassis.
Remove the insert by pressing it until it pops free.
b
c
Replace the front-panel piece by snapping it into place.
Small Mini-Tower Computer
1
Gently slide the drive into place until the tabs securely click into
position.
2
Connect the data, power, and audio cables to the drive.
Cable Replacement
1
2
3
4
Drives
71
1
2
3
4
Power cable
Audio cable
Data cable
Drive connector
If your computer came with an IDE CD drive, use the spare connector
on the existing interface cable. Otherwise, use the IDE interface cable
provided in the drive kit.
3
4
5
If you are installing a drive that has its own controller card, install the
controller card in an expansion slot.
Check all cable connections, and fold cables out of the way to provide
airflow for the fan and cooling vents.
If the drive bay was previously empty, remove the front-panel insert
from the front panel.
a
Release the insert tabs from inside the chassis.
Remove the insert by pressing it until it pops free.
b
c
Replace the front-panel piece by snapping it into place.
Removing the Hard Drive
Small Form-Factor Computer
1
Disconnect the power cable and hard-drive cable from the drive.
72
Drives
Cable Removal
1
2
1
2
Power cable
Hard-drive cable
2
Press in on the tabs on each side of the drive, and slide the drive
toward the I/O panel until the notch in the drive rail allows the drive to
be removed from the computer.
Drives
73
Hard Drive Removal
1
2
1
2
Notch in drive rail
Tabs (2)
3
If the replacement drive does not have the bracket rails attached,
remove the rails from the old drive by removing the two screws that
secure each rail to the drive.
Small Desktop Computer
1
The hard drive may or may not have a plastic shroud cover. (Operating
the computer without a hard-drive shroud does not affect its
performance.) If your computer's hard drive does not have a shroud,
proceed to the next step. If your computer's hard drive does have a
shroud, remove it by pressing in on the indented tab at the top of the
shroud and lifting the shroud away.
74
Drives
Cable Removal
1
2
1
2
Hard-drive cable
Power cable
3
Press in on the tabs on each side of the drive and slide it up and out.
76
Drives
Hard Drive Removal
1
1
Tabs (2)
4
If the replacement drive does not have the bracket rails attached,
remove the rails from the old drive by removing the two screws that
secure each rail to the drive.
Small Mini-Tower Computer
1
Disconnect the power and hard-drive data cables from the drive.
Drives
77
Cable Removal
1
2
1
2
Power cable
Hard-drive cable
2
Press in on the tabs on each side of the drive and slide it up and out.
78
Drives
Hard Drive Removal
3
If the replacement drive does not have the bracket rails attached,
remove the rails from the old drive by removing the two screws that
secure each rail to the drive.
Replacing the Hard Drive
NOTICE: To avoid possibly 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.
1
2
Gently slide the drive into place until you hear it securely click.
Connect the power cable to the drive, and connect the IDE data cable
to the drive and the IDE1 connector on the system board.
Drives
79
Small Mini-Tower Computer
Hard Drive Replacement
1
2
3
1
2
3
Power cable
IDE data cable
IDE1 connector
3
4
On the small desktop computer, if your computer has a hard-drive
shroud, replace the shroud by inserting the two tabs on the bottom
into the holes in the computer and snapping the top into place.
(Operating the computer without a hard-drive shroud does not affect
its performance.).
Check all connectors to be certain that they are properly cabled and
firmly seated.
NOTICE: To avoid possible damage to the computer, you must match the
colored stripe on the hard-drive data cable with pin 1 on the hard-drive (IDE1)
connector and with the system board interface connector (IDE1).
82
Drives
To locate the system board interface connector (IDE1), see "System
Board Components."
5
If the drive you just installed is the primary drive, insert a bootable
floppy disk into the floppy drive.
6
7
Turn on the computer.
Enter system setup and update the appropriate Primary Drive option,
0 or 1.
See the User's Guide for complete information on system setup.
Reset the chassis intrusion detector.
8
9
Restart the computer.
10 Partition and logically format the computer's hard drive before
proceeding to the next step.
For partition and format instructions, see the documentation that
came with the operating system.
11 Test the hard drive by running the Dell Diagnostics.
See "Solving Problems" in the User's Guide for complete information.
12 If the drive you just installed is the primary drive, install the operating
system on the hard drive.
For instructions, see the documentation that came with the operating
system.
Adding a Second Hard Drive — Small
Mini-Tower Computer
NOTICE: Ground yourself by touching an unpainted metal surface on the
back of the chassis.
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.
1
2
Unpack the drive, and prepare it for installation.
Check the documentation for the drive to verify that it is configured
for your computer.
3
Open the computer cover.
Drives
83
4
5
Remove the two green plastic drive rails inside the lower hard-drive
bay.
These rails are not attached with screws to the inside of the hard-drive
bay. To remove the rails, gently pull the rails up and out of the bay.
Attach the rails to the hard drive using the two screws attached to the
rails.
Ensure that the rail tabs are positioned at the back of the hard drive.
NOTICE: Do not install a drive into the lower hard-drive bay until you remove
the green drive rails from inside the lower hard-drive bay.
6
Remove the first hard drive from the upper bay and install it in the
lower bay.
a
Disconnect the power cable and the data cable from the back of
the first hard drive.
b
Press in the two green rail tabs and pull the first hard drive out of
the upper bay.
c
Gently slide the first hard drive into the lower bay until you hear a
click.
d
Reconnect the power cable and the data cable to the back of the
hard drive.
7
Gently slide the new hard drive into the upper bay until you hear a
click.
84
Drives
Second Hard Drive Installed
1
2
3
4
1
2
Rail tabs (2)
Second hard drive in upper
bay
3
4
First hard drive in lower bay
Hard drive cage
NOTICE: Match the colored strip on the cable with pin 1 on the drive.
Locate the extra connector on the drive cable that is attached to the
first hard drive and attach the connector to the second hard drive.
Drives
85
86
Drives
Expansion Card Types
Your computer provides expansion slots for the following cards:
•
In the small form-factor computer, one low-profile, 32-bit, 33-MHz
PCI card.
•
•
In the small desktop computer, up to two 32-bit, 33-MHz PCI cards.
In the small mini-tower computer, up to four 32-bit, 33-MHz PCI
cards.
All of the form factors provide an expansion slot for one 32-bit, AGP 4x card
(low-profile in the small form-factor and small desktop computers)
operating at 1.5 V.
88
Expansion Card
Expansion Cards
NOTE: Before
disconnecting a device
from the computer or
removing a component
from the system board,
verify that the auxiliary
power light on the system
board is off. For the
location of this light, see
"System Board
1
2
Components."
3
1
2
3
AGP 4x card
Low-profile 32-bit PCI card
32-bit PCI card
Removing an Expansion Card
CAUTION: Use a wrist grounding strap as explained in
"Precautionary Measures."
Small Form-Factor Computer
1
If necessary, disconnect any cables connected to the card.
Expansion Card
89
2
3
4
Press the hinged lever on the expansion card retention arm and raise
the retention arm.
Grasp the card by its outside corners and ease it out of its connector on
the riser board.
If you are removing the card permanently, install a metal filler bracket
over the empty card-slot opening.
Expansion Card Removal
1
2
3
4
5
1
2
3
4
5
Card-edge connector
Expansion card
Hinged lever
Retention arm
Expansion-card connector
Small Desktop Computer
1
2
Remove the expansion-card cage.
If necessary, disconnect any cables connected to the card.
90
Expansion Card
3
Press the lever on the expansion card retention arm and raise the
retention arm.
Expansion Card Removal
2
1
3
4
5
6
7
1
2
3
4
Retention arm
Lever
5
6
7
Expansion-card connector
Riser board
Expansion card
Card-edge connector
Expansion-card cage
4
5
Grasp the card by its outside corners and ease it out of its connector on
the riser board.
If you are removing the card permanently, install a metal filler bracket
over the empty card-slot opening.
Small Mini-Tower Computer
1
2
If necessary, disconnect any cables connected to the card.
Press the lever on the expansion card retention arm and raise the
retention arm.
Expansion Card
91
Small Mini-Tower Computer
1
2
3
5
4
1
2
3
4
5
Expansion card
Card-edge connector
Expansion-card connector
Retention arm
Lever
3
4
Grasp the card by its outside corners and ease it out of its connector on
the riser board.
If you are removing the card permanently, install a metal filler bracket
over the empty card-slot opening.
Replacing an Expansion Card
Small Form-Factor, Desktop, and Mini-Tower Computers
CAUTION: Use a wrist grounding strap as explained in
"Precautionary Measures."
92
Expansion Card
CAUTION: Some network cards automatically start the computer
when they are connected. To guard against electrical shock, be
sure to unplug the computer from its electrical outlet before
installing any expansion cards.
1
See the documentation that came with the expansion card for
information on configuring the card, making internal connections, or
otherwise customizing it for your computer.
2
3
Follow the procedures, in reverse order, for your particular computer in
"Removing an Expansion Card."
Place the expansion card on the connector and press down firmly.
Make sure that the card is fully seated in the slot.
If the expansion card is full-length, insert the end of the card into the
expansion-card guide bracket as you lower the card toward its
connector on the system board. Insert the card firmly into the
expansion-card connector on the system board.
Expansion Card
93
Expansion Card Connection
4
3
2
1
1
2
3
4
Bracket within slot
Bracket caught outside of slot
Fully seated card
Not fully seated card
4
Before lowering the retention arm, make sure of the following:
•
Tops of all expansion cards and filler brackets are flush with the
alignment bar.
•
Notch in the top of the card or filler bracket fits around the alignment
guide.
Press the arm into place, securing the expansion card(s) in the
computer.
94
Expansion Card
Retention Arm Closure
4
3
2
1
1
2
3
4
Filler bracket
Alignment guide
Alignment bar
Retention arm
5
Reconnect the computer and devices to their electrical outlets and
NOTE: After you open and close the cover, the chassis intrusion detector
causes the following message to be displayed at the next computer
start-up:
ALERT! Cover was previously removed.
See "Resetting the Chassis Intrusion Detector" for instructions.
Expansion Card
95
Removing an AGP Graphics Card
Small Form-Factor Computer
1
Remove the filler bracket by raising the hinged lever and then sliding
the bracket up.
AGP Slot Filler Bracket Removal
1
1
Hinged lever
2
3
On the AGP card clip, press the lever toward the PCI slot 1.
Pull the AGP card up and out of the AGP card clip.
Small Desktop Computer
1
On the hinged lever, press the indentation with your thumb at an
angle toward the system board until you release the tab. Continue
holding the lever and pull the lever up.
2
Slide the filler bracket up.
96
Expansion Card
AGP Slot Filler Bracket Removal
2
1
1
2
Hinged lever
Indented tab
3
4
On the AGP card clip, press the lever toward the PCI slot 1.
Pull the AGP card up and out of the AGP card clip.
Small Mini-Tower Computer
1
Remove the filler bracket by raising the hinged lever and then sliding
the bracket up.
Expansion Card
97
AGP Slot Filler Bracket Removal
1
1
Hinged lever
2
3
On the AGP card clip, press the lever toward PCI slot 1.
Pull the AGP card up and out of the AGP card clip.
98
Expansion Card
Replacing an AGP Graphics Card
Small Form-Factor, Small Desktop, and Small Mini-Tower
Computers
1
6
5
4
3
2
1
2
3
AGP card
4
5
6
AGP card clip tab
AGP card clip lever
AGP card notch
System board
AGP card clip
1
2
Press the AGP card clip lever, ensuring that the tab on the AGP card
clip lever fits into the notch on the front end of the AGP card.
Secure the AGP card by lowering the hinged lever on the back panel.
Expansion Card
99
100
Expansion Card
Removing the Expansion-Card Cage
CAUTION: Use a wrist grounding strap as explained in
"Precautionary Measures."
1
Examine any cables connected to expansion cards through the back-
panel openings, and disconnect any cables that will not reach the
expansion-card cage once it is removed from the computer.
2
3
Remove any cables connected to the expansion card.
Gently pull on the handle and lift the expansion-card cage up and
away from the computer.
Expansion-Card Cage Removal
Replacing the Expansion-Card Cage
1
Align the slots in the side of the expansion-card cage with the tabs on
the side of the computer, and slide the expansion-card cage down into
place.
2
Make sure that the riser board is fully seated in the RISER connector
on the system board.
102
Expansion-Card Cage (Small Desktop Computer Only)
Expansion-Card Cage Replacement
3
Replace and reconnect any cables you removed in steps 1 and 2 of the
previous procedure.
Removing the PCI Riser Board
NOTICE: To avoid damage to the expansion cards or the system board by
ESD, ground yourself by touching an unpainted metal surface on the back of
the computer.
CAUTION: Use a wrist grounding strap as explained in
"Precautionary Measures."
1
2
3
Remove the expansion-card cage.
Remove the expansion cards installed in the slots.
Remove the two screws that attach the riser board to the expansion-
card cage.
Replacing the PCI Riser Board
Follow the "Removing the PCI Riser Board" procedures in reverse order.
Expansion-Card Cage (Small Desktop Computer Only)
103
104
Expansion-Card Cage (Small Desktop Computer Only)
Removing Front-Panel Inserts
1
On the small form-factor and small desktop computers, perform the
following steps.
a
Face the front of the computer and use your fingers to remove the
front-panel cover.
b
Press on the insert until it pops free of the front-panel cover.
2
On the small mini-tower computer, perform the following steps.
a
Open the computer cover to a 45-degree angle and disconnect the
CD/DVD drive data cable.
b
Open the cover to a 90-degree angle and release the insert tabs
from inside the chassis.
c
Press on the insert until it pops free of the front-panel cover.
106
Front-Panel Inserts
Small Form-Factor Computer
Front-Panel Inserts
107
Small Desktop Computer
108
Front-Panel Inserts
Small Mini-Tower Computer
Front-Panel Inserts
109
Removing the Front I/O Panel
Small Form-Factor Computer
1
To access the mounting screw that holds the front I/O panel to the
computer, remove the hard drive.
Front I/O Panel Removal
1
2
4
3
1
2
3
4
Front I/O cable
Front audio cable
Mounting screw
Control panel cable
2
Disconnect the control panel cable from the control panel connector
on the I/O panel.
112
I/O Panel
3
Disconnect the front I/O cable from the front-panel connector on the
system board (see "System Board Components" for the location of the
front-panel connector and see "Small Form-Factor Computer" for the
location of the control panel and I/O cables).
4
5
Remove all cables that are connected to the front I/O panel.
secures the front I/O panel to the computer.
6
Remove the front I/O panel from the computer.
Small Desktop Computer
1
2
3
Remove the hard-drive shroud.
Disconnect the hard-drive data cable.
Disconnect the control panel cable from the control panel connector
on the I/O panel.
4
Disconnect the front I/O cable from the front-panel connector on the
system board (see "System Board Components" for the location of the
front-panel connector and see "Small Desktop Computer" for the
location of the control panel and I/O cables).
Note the routing of the control panel cable as you remove it from the
computer so that you can replace it correctly.
I/O Panel
113
Front I/O Panel Removal
1
2
3
4
1
2
3
4
Control panel cable
Front I/O cable
Front audio cable
Mounting screw
5
6
Remove all cables that are connected to the front I/O panel.
Remove the mounting screw that secures the front I/O panel to the
computer.
7
Remove the front I/O panel from the computer.
114
I/O Panel
Small Mini-Tower Computer
Front I/O Panel Removal
1
2
3
4
1
2
3
4
Control panel cable
Front audio cable
Front I/O cable
Mounting screw
1
2
Disconnect the control panel cable from the control panel connector
on the I/O panel.
Disconnect the front I/O cable from the front-panel connector on the
system board (see "System Board Components" for the location of the
front-panel connector and see "Small Mini-Tower Computer" for the
location of the control panel and front I/O cables).
I/O Panel
115
Note the routing of the control panel cable as you remove it from the
computer so that you can replace it correctly.
3
4
Remove all cables that are connected to the front I/O panel.
From inside the chassis cover, remove the mounting screw that secures
the front I/O panel to the chassis.
5
Remove the front I/O panel from the chassis.
Replacing the Front I/O Panel
To replace the front I/O panel, follow the removal procedure for your
computer in reverse.
116
I/O Panel
Removing a Memory Module
CAUTION: Use a wrist grounding strap as explained in
"Precautionary Measures."
1
Press the securing clips outward simultaneously until the memory
module disengages and pops out slightly from the socket.
Memor y Module Removal
2
1
1
2
Securing clips (2)
Socket
2
Lift the module away from the socket.
Replacing a Memory Module
1
Press the module fully into the socket while closing the securing clips
to lock the module into place.
118
Memory
Memor y Module Replacement
3
2
1
1
2
3
Socket
Slot
Securing clip
Memory
119
120
Memory
Removing the Cooling Fan/Heat-Sink
Assembly and Microprocessor
CAUTION: Use a wrist grounding strap as explained in
"Precautionary Measures."
CAUTION: The microprocessor and heat sink assembly can get
extremely hot. To avoid burns, be sure both have had sufficient
time to cool before you touch them.
1
2
3
Disconnect the fan cable from the system board.
Disconnect the 12-volt power cable from the system board.
On the small mini-tower computer, rotate the airflow shroud.
Air flow Shroud Rotation—Small Mini-Tower Computer
1
1
Airflow shroud
4
On the small mini-tower computer, press down on the metal securing
latches to release the securing clips from the retention base. Then lift
the clips out of the tabs on the retention base and away from the heat
sink.
122
Microprocessor
Heat Sink Removal—Small Mini-Tower Computer
2
1
3
4
5
6
1
2
3
Securing latches (2)
Securing clips (2)
Heat sink
4
5
6
Retention base
ZIF socket
Tabs (3)
5
On the small form-factor and small desktop computers, remove the
securing clips to remove the heat sink/blower assembly.
The heat sink is attached to the blower.
Microprocessor
123
Heat Sink/Blower Assembly Removal—Small Form-Factor
and Small Desktop Computers
2
1
3
4
5
6
1
2
3
Latches (2)
Securing clips (2)
Blower
4
5
6
Screws (2)
Heat sink
Retention base
NOTICE: Before you remove the heat sink, gently rock the heat sink, and then
slightly twist it as you lift it from the system board.
6
7
Lift the heat sink or heat sink/blower assembly away from the
microprocessor.
On the small form-factor and small desktop computers, remove the
two screws on the blower to remove it from the heat sink.
124
Microprocessor
NOTICE: Do not discard the original heat sink and securing clips unless you
are installing a microprocessor upgrade kit from Dell. If you are not installing
a microprocessor upgrade kit from Dell, reuse the original heat sink, blower,
and securing clips when installing your new microprocessor.
NOTICE: Lay the heat sink down with the thermal grease facing upward. Do
not lay the heat sink down with the thermal grease touching the work surface.
8
Discard the original heat sink and securing clips.
Microprocessor Removal
1
2
3
1
2
3
Release lever
Microprocessor
ZIF socket
NOTICE: Be careful not to bend any of the pins when you remove the
microprocessor from the ZIF socket. Bending the pins can permanently
damage the microprocessor.
The ZIF socket has a lever-type handle that secures and releases the
microprocessor from the ZIF socket.
9
Pull the socket release lever straight up until the microprocessor
releases.
Microprocessor
125
10 Remove the microprocessor from the socket.
11 Leave the release lever extended so that the socket is ready for the new
microprocessor.
Replacing the Cooling Fan/Heat-Sink
Assembly and Microprocessor
CAUTION: Use a wrist grounding strap as explained in
"Precautionary Measures."
NOTICE: Be careful not to bend any of the pins when you unpack the
microprocessor. Bending the pins can permanently damage the microprocessor.
1
2
Unpack the new microprocessor.
Align pin-1 (the beveled corner) of the microprocessor with the pin-1
corner of the socket.
NOTE: You must identify the pin-1 corner to correctly position the
microprocessor.
126
Microprocessor
Microprocessor Installation
1
1
Pin-1 corners of microprocessor and socket aligned
NOTICE: You must position the microprocessor correctly in the ZIF socket to
avoid permanent damage to the microprocessor and the computer when you
turn on the computer.
3
4
Set the microprocessor lightly in the socket and make sure all pins are
headed into the correct holes. Because your computer uses a ZIF
socket, there is no need to use force (which could bend the pins if the
microprocessor is misaligned). When the microprocessor is positioned
correctly, press it with minimal pressure to seat it.
When the microprocessor is fully seated in the socket, pivot the release
lever back toward the socket until it snaps into place, securing the
microprocessor.
NOTICE: If you are installing a microprocessor replacement kit from Dell,
return the microprocessor to Dell in the same package in which your
replacement kit was sent.
Microprocessor
127
NOTICE: If you are not installing a microprocessor upgrade kit from Dell,
reuse the original blower/heat sink assembly and securing clips when replacing
the microprocessor.
5
6
Remove the film covering the bottom of the heat sink.
On the small form-factor and small desktop computers, reinstall the
two screws that attach the blower to the heat sink.
7
8
Lower the heat sink or blower/heat sink assembly to the
microprocessor so that the heat sink fits in the retention base.
Fit the end of each securing clip that does not have the latch over its
tab on the retention base. Then, fit the middle of the clip over the
middle tab on the retention base, and press down on the clip’s latch to
secure the clip to the retention base.
9
On the small mini-tower computer, rotate the airflow shroud back over
the heat sink.
10 Plug the fan cable into its connector on the system board.
11 Plug the 12-volt power cable into its connector on the system board.
12 Close the computer cover, reconnect your computer and devices to
their electrical outlets, and turn them on.
As the computer boots, it detects the presence of the new
microprocessor and automatically changes the configuration
information in system setup.
NOTE: After you open and close the cover, the chassis intrusion detector
causes the following message to be displayed at the next system start-up:
ALERT! Cover was previously removed.
13 Enter system setup and confirm that the system data area correctly
identifies the type of installed microprocessor.
For instructions on using system setup, see the User's Guide.
14 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 User's Guide for information on the chassis intrusion detector.
128
Microprocessor
15 Run the Dell Diagnostics to verify that the new processor is operating
NOTE: If a setup
password has been
assigned by someone else,
contact the network
administrator for
correctly.
See the User’s Guide for information on Dell Diagnostics.
information on resetting
the chassis intrusion
detector.
Microprocessor
129
130
Microprocessor
Small Desktop Computer
1
2
1
2
Release button
AC power connector
Power Supply
133
Small Mini-Tower Computer
1
2
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 clips in the
computer 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.
3
On the small desktop computer, remove the expansion-card cage and
remove the power cables from the side of the hard drive. To remove
the power cables, use the cables as leverage and pull away from the
clips while simultaneously pulling on the metal clips with your fingers.
4
5
6
On the small mini-tower computer, remove the two screws that attach
the power supply to the rear wall.
Press the release button. On the small desktop computer, press down
on the handle, which in turn presses on the release button.
Slide the power supply toward the front of the computer
approximately 1 inch.
134
Power Supply
7
Lift the power supply up and out of the computer.
Replacing the Power Supply
1
2
3
4
Slide the power supply into place.
Reconnect the DC power cables.
Connect the AC power cable to the connector.
On the small desktop computer, reattach the power cables to the side
of the hard drive and replace the expansion-card cage.
5
6
Run the cables underneath the clips.
Press the clips to close them over the cables.
Power Supply
135
136
Power Supply
1
2
3
4
5
6
7
8
9
Floppy drive
16 Audio line-out connector
17 12-volt microprocessor power connector
18 Network (upper) and USB connectors (2) (lower)
19 Keyboard (lower) and mouse (upper) connectors
20 Diagnostic lights
Internal speaker
EIDE2 connector
Front panel connector
EIDE1 connector
Suspend-to-RAM light
PCI riser (small mini-tower computer only)
Auxiliary power light
AGP connector
21 Serial 2 connector
22 Parallel connector
23 Serial 1 connector
24 Microprocessor and heat sink
25 Memory module (DIMM) connectors
26 Fan connector
10 PCI connectors
11 CD audio connector
12 Telephony connector (TAPI)
13 Front audio connector
14 Microphone connector
15 Audio line-in connector
27 Main power connector
28 Battery
29 RTC reset jumper
30 Password jumper
System Board L abels
Connector or Socket
AUDIO
Description
Line-in, line-out, and microphone jacks
Auxiliary power light
AUX_PWR
BATTERY
CD-IN
Battery socket
CD/DVD drive audio cable connector
Microprocessor connector
CPU
DIAG_LED
DIMM_x
DSKT
Diagnostic lights
Dual in-line memory module (DIMM) socket
Floppy/tape drive interface connector
Microprocessor fan connector
Front panel audio connector for integrated audio
Front panel cable connector
FAN
FRONTAUDIO
FRONTPANEL
H_RISER
IDEn
Horizontal riser board connector; vertical PCI cards
EIDE interface connector
System Board
139
Connector or Socket
KYBD_MOUSE
MODEM
Description
Keyboard and mouse connectors
Telephony connector
NIC_USB
Integrated network adapter connector and USB
connectors
PAR_SER1_SER2
PCIn
Parallel and serial port connectors
PCI expansion card connectors
Main power input connector
12-volt power connector
POWER
12VPOWER
PSWD
Password jumper
RTCRST
SPEAKER
STR
RTC reset jumper
Internal speaker
Suspend-to-RAM light
V_RISER
Vertical riser board connector; horizontal PCI cards
System Board Jumper
140
System Board
System-Board Jumper Settings
Jumper Setting
Description
PSWD
(default) Password features are enabled.
Password features are disabled.
RTCRST
Real-time clock reset. Can be used for
troubleshooting purposes.
jumpered
unjumpered
Removing the System Board
CAUTION: Before you remove any component from the system
board, read the steps in "Precautionary Measures."
1
2
3
Remove any components that restrict access to the system board.
Disconnect all cables from the system board.
NOTE: The system board
and metal tray are
attached and are removed
as one piece.
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.
4
Pull up on the tab and slide the system board toward the front of the
computer; lift it up and away.
System Board
141
Removing the System Board
5
Place the system board that you just removed next to the replacement
system board.
Replacing the System Board
1
Transfer components from the existing system board to the
replacement system board.
2
Remove the memory modules and install them on the replacement
board.
CAUTION: The microprocessor package and heat sink assembly
can get hot. To avoid burns, be sure that the package and
assembly have had sufficient time to cool before you touch them.
3
4
Remove the heat sink assembly and microprocessor from the existing
system board and transfer them to the replacement system board.
Configure the settings of the replacement system board.
142
System Board
5
6
7
8
9
Set the jumpers on the replacement system board so it is identical to
the one on the existing board.
Orient the replacement board by aligning the notches on the bottom
to the tabs on the computer floor.
NOTE: Some
components and
connectors on the
replacement system board
may be in different
locations than the
corresponding connectors
on the existing system
board.
Slide the board toward the back of the computer until it clicks into
place.
Replace any components and cables that you removed from the system
board.
Reconnect all cables to their connectors at the back of the computer,
their power sources and turn them on.
NOTE: After you close the cover, the chassis intrusion detector causes the
following message to be displayed at the next computer start-up:
ALERT! Cover was previously removed.
10 Reset the chassis intrusion detector.
System Board
143
144
System Board
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