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© 2010 Dell Inc. All rights reserved. Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden. Trademarks used in this text: Dell, the DELL logo, and Inspiron are trademarks of Dell Inc.; Windows and the Windows start button logo are either trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries; Bluetooth is a registered trademark owned by Bluetooth SIG, Inc. and is used by Dell under license. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own. December 2010 Rev. A00 Regulatory model: P07T series Regulatory type: P07T001 Before You Begin Battery Memory Module(s) Keyboard Hard Drive Palm Rest Power Button Board Wireless Mini-Card(s) Audio Board Coin-Cell Battery Display Camera Middle Cover AC Adapter Connector System Board Processor Heat Sink Speakers Flashing the BIOS NOTE: A NOTE indicates important information that helps you make better use of your computer. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. Back to Contents Page AC Adapter Connector Dell™ Inspiron™ 1121 Service Manual Removing the AC Adapter Connector Replacing the AC Adapter Connector Removing the AC Adapter Connector 1. Follow the instructions in Before You Begin. 2. Remove the battery (see Removing the Battery). 3. Remove the keyboard (see Removing the Keyboard). 4. Follow the instructions from step 4 to step 6 in Removing the Hard Drive. 5. Remove the palm rest (see Removing the Palm Rest). 6. Remove the display assembly (see Removing the Display Assembly). 7. Remove the middle cover (see Removing the Middle Cover). 8. Remove the audio board (see Removing the Audio Board). 9. Lift and remove the bracket off the computer base as shown in the illustration. 10. Disconnect the AC adapter connector cable from the connector on the system board. 11. Make note of the cable routing and carefully dislodge the AC adapter connector cable from the routing guides. 12. Lift the AC adapter connector off the computer base. 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 CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell™ is not covered by your warranty. CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as a connector on your computer). CAUTION: To help prevent damage to the system board, remove the main battery (see Removing the Battery) before working inside the computer. 1 bracket Replacing the AC Adapter Connector 1. Follow the instructions in Before You Begin. 2. Route the AC adapter connector cable and place the AC adapter connector on the computer base. 3. Connect the AC adapter connector cable to the connector on the system board. 4. Replace the bracket that secures the AC adapter connector on the computer base. 5. Replace the audio board (see Replacing the Audio Board). 6. Replace the middle cover (see Replacing the Middle Cover). 7. Replace the display assembly (see Replacing the Display Assembly). 8. Replace the palm rest (see Replacing the Palm Rest). 9. Follow the instructions from step 5 to step 7 in Replacing the Hard Drive. 10. Replace the keyboard (see Replacing the Keyboard). 11. Replace the battery (see Replacing the Battery). Back to Contents Page 1 AC adapter connector cable 2 AC adapter connector CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer. Back to Contents Page Audio Board Dell™ Inspiron™ 1121 Service Manual Removing the Audio Board Replacing the Audio Board Removing the Audio Board 1. Follow the instructions in Before You Begin. 2. Remove the battery (see Removing the Battery). 3. Remove the keyboard (see Removing the Keyboard). 4. Follow the instructions from step 4 to step 6 in Removing the Hard Drive. 5. Remove the palm rest (see Removing the Palm Rest). 6. Disconnect the Mini-Card antenna cables from the Mini-Card(s). 7. Disconnect the audio cable and the speaker cable from their connectors on the audio board. 8. Remove the three screws that secure the audio board to the computer base. 9. Lift the audio board out of the computer base. Replacing the Audio Board 1. Follow the instructions in Before You Begin. 2. Align the connectors on the audio board with the slots on the ...