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Ensure that the tab on the processor cover is positioned underneath the center cover latch on the socket. 9. Pivot the socket release lever back towards the socket, and snap it into place to secure the processor. 10. Clean the thermal grease from the bottom of the heat sink. CAUTION: Ground yourself by touching an unpainted metal surface or the computer stand. 1 processor cover 2 processor 3 processor socket 4 center cover latch 5 release lever 6 front alignment notch 7 processor pin-1 indicator 8 rear alignment notch 9 tab CAUTION: Socket pins are delicate. To avoid damage, ensure that the processor is aligned properly with the socket, and do not use excessive force when you install the processor. Be careful not to touch or bend the pins on the system board. CAUTION: You must position the processor correctly in the socket to avoid permanent damage to the processor. CAUTION: Ensure that you apply new thermal grease. New thermal grease is critical for ensuring adequate thermal bonding, which is a requirement for optimal processor operation. 11. Apply the new thermal grease to the top of the processor. 12. Replace the processor heat sink (see Replacing the Heat Sink). 13. Replace the back I/O panel (see Replacing the Back I/O Panel). 14. Replace the stand (see Replacing the Stand). 15. Replace the shield (see Replacing the Shield). 16. Replace the computer cover (see Replacing the Computer Cover). 17. Connect your computer and all attached devices to electrical outlets, and then turn them on. Back to Contents Page CAUTION: Ensure that the processor heat sink is correctly seated and secure. Back to Contents Page Power Supply Unit Dell Studio One 19/1909 Service Manual Removing the Power Supply Unit Replacing the Power Supply Unit Removing the Power Supply Unit 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3. Remove the shield (see Removing the Shield). 4. Remove the stand (see Removing the Stand). 5. Disconnect the power plug cable from the power supply unit. 6. Disconnect the power supply unit cable from the connector (ATX_POWER1) on the system board. 7. Remove the four screws that secure the power supply unit to the chassis. 8. Place the power supply unit in a secure location. WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at WARNING: To guard against likelihood of electric shock, laceration by moving fan blades or other unexpected injuries, always unplug your computer from the electrical outlet before removing the computer cover. WARNING: Ensure that the part number of the replacement power supply unit matches that of the current power supply unit. CAUTION: Do not perform the following steps unless you are familiar with hardware removal and replacement. Performing these steps incorrectly could damage your computer. For technical assistance, see the Setup Guide. 1 power supply unit cable 2 screws (4) 3 protective grounding cable screw 4 power plug cable Replacing the Power Supply Unit 1. Follow the procedures in Before You Begin. 2. Replace the four screws that secure the power supply unit to the chassis. 3. Connect the power supply unit cable to the connector (ATX_POWER1) on the system board. 4. Connect the power plug cable to the power supply unit. 5. Replace the stand (see Replacing the Stand). 6. Replace the shield (see Replacing the Shield). 7. Replace the computer cover (see Replacing the Computer Cover). Back to Contents Page WARNING: Ensure that the protective grounding cable screw is secure. Back to Contents Page Shield Dell Studio One 19/1909 Service Manual Removing the Shield Replacing the Shield Removing the Shield 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3. To remove the shield loosen the eight captive screws that secure the shield to the computer. Replacing the Shield 1. Follow the procedures in Before You Begin. 2. Position the shield over the computer and tighten the eight captive screws. 3. Replace the computer cover (see Replacing the Computer Cover). Back to Contents Page WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at 1 captive screws (8) 2 shield NOTE: Before replacing the shield, ensure that all the cables are connected and that no tools or extra parts (including screws) are left inside the computer. Back to Contents Page Side I/O Panel Dell Studio One 19/1909 Service Manual Removing the Side I/O Panel Replacing the Side I/O Panel Removing the Side I/O Panel 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3. Remove the shield (see...