OptiPlex SX270 - Desktop computer DELL - Free user manual and instructions

Product type	Desktop computer
Brand	Dell
Model	OptiPlex SX270
Processor	Intel Pentium 4 (up to 2.8 GHz)
Memory	Up to 2 GB DDR SDRAM
Storage	IDE hard drive (up to 80 GB)
Dimensions (H × W × D)	Approximately 9.1 × 27.9 × 35.6 cm
Weight	Approximately 5.4 kg
Power supply	200 W (internal power supply)
Main functions	Office work, internet browsing, basic multimedia; USB, serial, parallel, VGA, Ethernet, audio ports
Maintenance and cleaning	Clean with a soft, dry cloth; avoid liquids; dust vents regularly
Security	Chassis intrusion detection; optional hood lock
Spare parts and repairability	System board, heat sink, fan, hard drive, modular peripheral
General information	Launch year: 2003; operating system: Windows XP

Frequently Asked Questions - OptiPlex SX270 DELL

How to replace the system board on the Dell OptiPlex SX270?

Follow the steps in the manual: turn off the computer, disconnect all cables, remove the cover and components in order (modular peripheral, hard drive, cover, fan shroud, heat sink, intrusion switch), then remove the system board screws and replace it. Be sure to discharge static electricity by touching an unpainted metal surface before handling components.

What type of RAM does the Dell OptiPlex SX270 use?

It uses DDR SDRAM (184-pin) at 266 MHz or 333 MHz, with a maximum capacity of 2 GB (two slots).

How to reset the chassis intrusion detector?

After replacing the cover, restart the computer and enter the BIOS (usually by pressing F2 on startup). In the Chassis Intrusion menu, select Enabled or Enabled-Silent to reset.

What is the maximum processor supported by the OptiPlex SX270?

The maximum processor is an Intel Pentium 4 running at 2.8 GHz (socket 478 with 533 MHz front-side bus).

How to clean the inside of my Dell OptiPlex SX270?

Turn off and unplug the computer. Use a soft, dry cloth for exterior cleaning. For the interior, use compressed air to dust the fans, heat sink, and vents. Avoid using liquids or chemicals.

What peripherals can I connect to the ports on the OptiPlex SX270?

It has ports for PS/2 mouse/keyboard, USB 2.0 (front and rear), one serial port, one parallel port, one VGA port, one 10/100 Ethernet port, audio jacks (line-in, line-out, microphone).

My OptiPlex SX270 won't power on, what should I do?

Check the power cable and electrical outlet. Make sure the power switch is in the I position. If the problem persists, open the case and check internal connections (system board, power supply). A faulty power supply may be the cause.

What is the hard drive size compatible with the OptiPlex SX270?

The hard drive must be 3.5-inch IDE (parallel ATA). Common capacities ranged from 20 GB to 80 GB. It is possible to install a hard drive with an adapter, but SATA models are not native.

Is it possible to add a dedicated graphics card to the OptiPlex SX270?

Yes, it has a standard PCI slot (no AGP slot). You can install a PCI graphics card, but its performance will be limited. The integrated graphics (Intel Extreme Graphics) is used by default.

How to update the BIOS on the OptiPlex SX270?

Download the latest BIOS version from support.dell.com for the OptiPlex SX270 model. Create a bootable floppy disk or USB key with the update file. Restart the computer with the media and follow the on-screen instructions. Do not power off during the update.

USER MANUAL OptiPlex SX270 DELL

Replacing the System Board

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Dell™ Computers

Replacing the System Board

DELL™

www.dell.com | support.dell.com

Notes, Notices, and Cautions

NOTE: A NOTE indicates important information that helps you make better use of your computer.
NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death.

CAUTION: Before you begin this procedure, follow the safety instructions in the Setup and Quick Reference Guide.

CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis.

1 Shut down the computer through the Start menu.
2 Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your computer, turn them off now.
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.
3 Disconnect any telephone or telecommunication lines from the computer.
4 Disconnect your computer and attached devices from their electrical outlets, and then press the power button to ground the system board.
5 Remove the computer from the mounting plate (if used).
6 Remove the cable cover, if it is attached.
7 Remove the stand, if it is attached.

CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.

NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of the computer. While you work, periodically touch an unpainted metal surface to dissipate any static electricity that could harm internal components.

8 Remove the following components in the order in which they are listed (for detailed removal steps, see the User's Guide):

a Module device
b Hard drive
c Computer cover

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d Heat-sink fan shroud

e Heat sink

f Chassis intrusion switch

9 Remove the heat-sink retention base by removing the four green screws that secure the retention base to the chassis.

10 Remove the five silver screws that secure the system board to the chassis.

NOTICE: The module device connector is attached underneath the system board. When removing the system board, be careful not to bump or catch the connector on the metal chassis floor.

4 Replacing the System Board

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11 Remove the system board and I/O shield assembly by slightly sliding the board toward the front of the computer and lifting up.

Illustration of an open computer drive chassis showing internal components and a blue arrow indicating a process or operation (no text or symbols present)

12 Remove the two black screws that secure the I/O shield to the system board.

Technical diagram of a device showing internal components and external structure (no text or symbols)

Replacing the System Board 5

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13 Remove the I/O shield:

a Turn the system board upside down.

b Carefully insert a blunt, nonconducting object such as a plastic screwdriver under the I/O shield and pry the shield away from the system board until the shield dislodges from the system board.

Technical line drawing of a computer chassis with an arrow indicating a component (no text or symbols present)

14 Attach the I/O shield to the replacement system board:

a Align the two flanged screw mounts on the I/O shield with the two screw holes on the system board.

b Rotate the I/O shield toward the system board and snap the I/O shield into place.

c Replace the two screws that you removed in step 12.

6 Replacing the System Board

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Technical line drawing of a computer chassis with labeled components and an arrow indicating rotation (no text or symbols present)

15 Install the replacement system board and I/O shield assembly:

a Line up the parallel port connector with the opening on the back of the computer.
b Insert the back-panel connectors into the openings at the back of the computer and lower the system board into place.

Illustration of an open computer drive chassis showing internal components and a blue arrow indicating compression or disassembly (no text or symbols present)

Replacing the System Board 7

c Replace the five silver screws that you removed in step 10.

d Reinstall the heat sink retention base by reinserting the four green screws that you removed in step 9.

e Replace all of the components that you removed in step 8.

16 Reattach the stand (if used).

17 Attach the computer to the mounting plate (if used).

18 Replace the cable cover (if used).

NOTICE: To connect a network cable, first plug the cable in to the network wall jack and then in to the computer.

19 Connect your computer to the adapter cable and to an electrical outlet, connect any devices to electrical outlets, and then turn on the computer and devices.

After you replace the cover, the chassis intrusion detector, if enabled, causes the following message to appear on the screen at the next computer start-up:

ALERT! Cover was previously removed.

20 Reset the chassis intrusion detector by changing the Chassis Intrusion option to Enabled or Enabled-Silent.

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Dell™ Computers

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Isometric view of a computer motherboard showing CPU socket, drive bays, and internal components (no text or labels)

Diagram of a device interior showing internal components and external structure (no text or symbols)

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Technical line drawing of a computer chassis with an arrow indicating a component (no text or symbols present)

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Technical line drawing of a computer chassis with mounting hardware and a blue arrow indicating rotation (no text or symbols)

Illustration of a computer tower internal structure with a blue arrow indicating compression or disassembly (no text or symbols present)

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Dell™ Computers

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Isometric view of a computer motherboard showing CPU socket, drive bays, and internal components (no text or labels)

Diagram of a device interior showing internal components and external structure (no text or symbols)

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Technical line drawing of a computer chassis with an arrow indicating a component (no text or symbols present)

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Technical line drawing of a computer chassis with labeled components and directional arrows indicating motion (no text or symbols present)

Illustration of an open computer drive chassis showing internal components and a blue arrow indicating compression or disassembly (no text or symbols present)

ALERT! Cover was previously removed (Alerta. La cubierta se ha quitado anteriormente).

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