Dell OptiPlex SX270N Service Manual
Summary
Step-by-step service guide for replacing the system board in Dell DCT (Desktop Client Terminal) computers, covering safety precautions, static discharge prevention, component removal sequence, and system board reassembly procedures. Targeted at Dell service technicians performing motherboard-level repairs on DCT model systems.
Page 1 Text Content
0Y0561.book Page 1 Thursday, May 8, 2003 9:45 AM
Dell™ Computers
Replacing the System Board Remplacement de la carte système Sustitución de la placa base
Model DCT
Page Summary Contents For Dell OptiPlex SX270N Service Manual
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0Y0561.book Page 1 Thursday, May 8, 2003 9:45 AM Dell™ Computers Replacing the System Board Remplacement de la carte système Sustitución de la placa base Model DCT
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0Y0561.book Page 2 Thursday, May 8, 2003 9:45 AM
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0Y0561.book Page 1 Thursday, May 8, 2003 9:45 AM Dell™ Computers Replacing the System Board
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0Y0561.book Page 2 Thursday, May 8, 2003 9:45 AM Notes, Notices, and Cautions NOTE: A NOTE indicates important information that helps you make better use of your computer. NOTICE: A NOTICE indicates e...
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0Y0561.book Page 3 Thursday, May 8, 2003 9:45 AM CAUTION: Before you begin this procedure, follow the safety instructions in the Setup and Quick Reference Guide. CAUTION: To prevent static damage to c...
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0Y0561.book Page 4 Thursday, May 8, 2003 9:45 AM .d ll .c .d ll .c Heat-sink fan shroud Heat sink Chassis intrusion switch Remove the heat-sink retention base by removing the four green screws that se...
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0Y0561.book Page 5 Thursday, May 8, 2003 9:45 AM Remove the system board and I/O shield assembly by slightly sliding the board toward the front of the computer and lifting up. Remove the two black scr...
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0Y0561.book Page 6 Thursday, May 8, 2003 9:45 AM .d ll .c .d ll .c Remove the I/O shield: Turn the system board upside down. Carefully insert a blunt, nonconducting object such as a plastic screwdrive...
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0Y0561.book Page 7 Thursday, May 8, 2003 9:45 AM Install the replacement system board and I/O shield assembly: Line up the parallel port connector with the opening on the back of the computer. Insert ...
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0Y0561.book Page 8 Thursday, May 8, 2003 9:45 AM .d ll .c .d ll .c Replace the five silver screws that you removed in step 10. Reinstall the heat sink retention base by reinserting the four green scre...
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0Y0561.book Page 9 Thursday, May 8, 2003 9:45 AM Dell™ Computers Remplacement de la carte système
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0Y0561.book Page 10 Thursday, May 8, 2003 9:45 AM Remarques, avis et précautions REMARQUE : Une REMARQUE fournit des informations importantes qui vous aident à mieux utiliser votre ordinateur. AVIS : ...
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0Y0561.book Page 11 Thursday, May 8, 2003 9:45 AM PRÉCAUTION : Avant de commencer cette procédure, suivez les instructions de sécurité décrites dans le Guide de configuration et de référence rapide. P...
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0Y0561.book Page 12 Thursday, May 8, 2003 9:45 AM .d ll .c .d ll .c Retirez les composants suivants dans l'ordre dans lequel ils sont répertoriés (pour obtenir la procédure détaillée de retrait, repor...
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0Y0561.book Page 13 Thursday, May 8, 2003 9:45 AM Retirez la carte système et le blindage d'E/S en faisant glisser légèrement la carte vers l'avant de l'ordinateur et en la soulevant. Retirez les deux...
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0Y0561.book Page 14 Thursday, May 8, 2003 9:45 AM .d ll .c .d ll .c Retirez le blindage d'E/S : Retournez la carte système. Insérez soigneusement un objet émoussé non conducteur tel qu'un tournevis en...
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0Y0561.book Page 15 Thursday, May 8, 2003 9:45 AM Installez la carte système de rechange et l'ensemble de blindage d'E/S : Alignez le connecteur de port parallèle avec l'ouverture située à l'arrière d...
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0Y0561.book Page 16 Thursday, May 8, 2003 9:45 AM .d ll .c .d ll .c Replacez les cinq vis argentées que vous avez retirées à l'étape 10. Réinstallez le socle de rétention du dissipateur de chaleur en ...
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0Y0561.book Page 17 Thursday, May 8, 2003 9:45 AM Dell™ Computers Sustitución de la placa base
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0Y0561.book Page 18 Thursday, May 8, 2003 9:45 AM Notas, avisos y precauciones NOTA: Una NOTA proporciona información importante que le ayuda a utilizar su equipo de la mejor manera posible. AVISO: Un...
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0Y0561.book Page 19 Thursday, May 8, 2003 9:45 AM PRECAUCIÓN: Antes de comenzar este procedimiento, siga las instrucciones de seguridad de la Guía de configuración y de referencia rápida. PRECAUCIÓN: ...
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0Y0561.book Page 20 Thursday, May 8, 2003 9:45 AM .d ll .c .d ll .c Cubierta del ventilador del disipador de calor Disipador de calor Interruptor de intromisión al chasis Extraiga la base de retención...
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0Y0561.book Page 21 Thursday, May 8, 2003 9:45 AM Extraiga la placa base y el ensamblaje del blindaje de E/S deslizando ligeramente la placa hacia la parte anterior del equipo y levántela. Retire los ...
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0Y0561.book Page 22 Thursday, May 8, 2003 9:45 AM .d ll .c .d ll .c Extraiga el blindaje de E/S: Ponga la placa base boca abajo. Inserte con cuidado un objeto romo y no conductor, como un destornillad...
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0Y0561.book Page 23 Thursday, May 8, 2003 9:45 AM Instale la placa base de sustitución y el ensamblaje del blindaje de E/S: Alinee el conector de puerto paralelo con la abertura de la parte posterior ...
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0Y0561.book Page 24 Thursday, May 8, 2003 9:45 AM .d ll .c .d ll .c Vuelva a colocar los cinco tornillos plateados que extrajo en el paso 10. Vuelva a instalar la base de retención del disipador de ca...
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0Y0561.book Page 2 Thursday, May 8, 2003 9:45 AM Printed in the U.S.A. Imprimé aux États-Unis. Impreso en Estados Unidos.
Manual Details
| Brand | Dell |
|---|---|
| Pages | 27 |
| File Size | 10.00 MB |
| Published | June 27, 2026 |
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Frequently Asked Questions
What should I do before starting the system board replacement?
Follow safety instructions. Discharge static electricity by touching an unpainted metal surface on the chassis.
How do I ensure a safe electrical connection during component removal?
Always unplug your computer from the electrical outlet and ground yourself by touching an unpainted metal surface initially, and periodically while working.
What is the proper sequence for reconnecting the network cable?
Connect the cable first to the network wall jack, then plug it into your computer.
How do I re-enable the chassis intrusion detection after servicing?
Change the Chassis Intrusion setting in the BIOS/setup menu back to 'Enabled' or 'Enabled-Silent'.