Inspiron 3655 Service Manual Regulatory Model: D20M Regulatory Type: D20M001
Notes, cautions, and warnings 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. © 2016 Dell Inc. All rights reserved. This product is protected by U.S. and international copyright and intellectual property laws.
Contents 1 Before working inside your computer............................................................................................. 6 Before you begin ...................................................................................................................................................................6 Safety instructions.................................................................................................................................................................
13 Replacing the 2.5-inch hard drives............................................................................................. 25 Procedure............................................................................................................................................................................. 25 Post-requisites.....................................................................................................................................................................
25 Replacing the antenna modules..................................................................................................43 Procedure............................................................................................................................................................................. 43 Post-requisites.....................................................................................................................................................................
1 Before working inside your computer NOTE: The images in this document may differ from your computer depending on the configuration you ordered. Topics: • • • Before you begin Safety instructions Recommended tools Before you begin 1. Save and close all open files and exit all open applications. 2. Shut down your computer. The shut-down instruction varies depending on the operating system installed on your computer. Power > Shut down. • Windows 10: Click Start > • • Windows 8.
disconnecting cables, keep them evenly aligned to avoid bending any connector pins. When connecting cables, ensure that the ports and connectors are correctly oriented and aligned. CAUTION: Press and eject any installed card from the media-card reader.
2 After working inside your computer CAUTION: Leaving stray or loose screws inside your computer may severely damage your computer. 1. Replace all screws and ensure that no stray screws remain inside your computer. 2. Connect any external devices, peripherals, or cables you removed before working on your computer. 3. Replace any media cards, discs, or any other parts that you removed before working on your computer. 4. Connect your computer and all attached devices to their electrical outlets. 5.
3 Technical overview NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • System Board Components System Board Components 1. 3. 5. 7. 9. 11. 13.
4 Removing the computer cover NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • Procedure Procedure 1. Lay the computer on its side with the vents facing up. 2.
5 Replacing the computer cover NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • Procedure Procedure 1.
6 Removing the front bezel NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Prerequisites Procedure Prerequisites Remove the computer cover. Procedure 1.
a. chassis b. front-bezel tabs c.
7 Replacing the front bezel NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Procedure Post-requisites Procedure 1.
8 Removing the memory modules NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Prerequisites Procedure Prerequisites 1. Remove the computer cover. 2.
a. securing clip b. memory-module slot c.
9 Replacing the memory modules NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Procedure Post-requisites Procedure 1.
Post-requisites 1. Replace the front bezel. 2. Replace the computer cover.
10 Removing the 3.5-inch hard drive NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Prerequisites Procedure Prerequisites 1. Remove the computer cover. 2.
a. hard-drive assembly b. hard-drive cable c. power cable 4. Slide the hard-drive assembly out of the side-chassis. a. hard-drive assembly b. side-chassis 20 Removing the 3.
5. Remove the screws that secure the hard-drive bracket to the hard drive. 6. Lift the hard drive off the hard-drive bracket. a. hard-drive bracket b. hard drive c. screws (4) Removing the 3.
11 Replacing the 3.5-inch hard drive NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Procedure Post-requisites Procedure 1. Place the hard drive in the hard-drive bracket.
12 Removing the 2.5-inch hard drives NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Prerequisites Procedure Prerequisites 1. Remove the computer cover. 2.
a. hard-drive cable b. power cable c. hard-drive assembly 4. Spread apart the hard-drive bracket from one edge and lift the hard drive up. 5. Slide and remove the hard drive from the hard-drive bracket. NOTE: Note the orientation of the hard drive so that you can replace it correctly. a. hard-drive bracket b. hard drive 24 Removing the 2.
13 Replacing the 2.5-inch hard drives NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Procedure Post-requisites Procedure 1.
14 Replacing the optical drive NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Prerequisites Procedure Prerequisites 1. Remove the computer cover. 2.
1. hard-drive cable 3. hard-drive power cable 5. optical-drive cable 2. hard drive 4. optical-drive power cable 6. optical drive 4. Close the side-chassis. 5. Remove the screw that secures the optical-drive assembly to the side-chassis. 6. Gently slide the optical-drive module out of the optical-drive bay on the front of the chassis. a. side-chassis b. screw c.
7. Remove the screws that secure the optical-drive bracket to the optical drive. a. optical-drive bracket b. optical drive c. screws (2) 8. Gently pull and disconnect the optical-drive bezel from the optical drive. a. optical-drive bezel b.
15 Removing the optical drive NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Procedure Post-requisites Procedure 1.
16 Removing the processor fan NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Prerequisites Procedure Prerequisites 1. Remove the computer cover. 2.
a. processor fan b. screws (4) c.
17 Replacing the processor fan NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Procedure Post-requisites Procedure 1.
18 Removing the heat sink NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. NOTE: The heat sink may become hot during normal operation.
19 Replacing the heat sink NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. CAUTION: Incorrect alignment of the heat sink can damage the system board and processor.
20 Removing the coin-cell battery NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. CAUTION: Removing the coin-cell battery resets the BIOS setup program’s settings to default.
a. plastic scribe b. coin-cell battery c.
21 Replacing the coin-cell battery NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Procedure Post-requisites Procedure 1.
22 Removing the wireless card NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Prerequisites Procedure Prerequisites 1. Remove the computer cover. 2.
1. screw 3. wireless card 5. antenna cables 2. wireless-card slot 4.
23 Replacing the wireless card NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Procedure Post-requisites Procedure 1.
24 Removing the antenna modules NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Prerequisites Procedure Prerequisites 1. Remove the computer cover. 2.
5. Using a plastic scribe, gently pry the antenna modules off the side-chassis. 1. antenna modules (2) 3. plastic scribe 42 Removing the antenna modules 2. screws (2) 4.
25 Replacing the antenna modules NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Procedure Post-requisites Procedure 1.
26 Removing the power-button module NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Prerequisites Procedure Prerequisites 1. Remove the computer cover. 2.
a. power-button cable b. tab c.
27 Replacing the power-button module NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Procedure Post-requisites Procedure 1. Slide the power button into its socket. 2.
28 Removing the chassis fan NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Prerequisites Procedure Prerequisites 1. Remove the computer cover. 2. Remove the front bezel.
a. side-chassis 3. Disconnect the chassis-fan cable from the system board. 4. Remove the chassis fan from the chassis. a. chassis fan b.
29 Replacing the chassis fan NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Topics: • • Procedure Post-requisites Procedure 1.
30 Removing the system board NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. NOTE: Your computer’s Service Tag is stored in the system board.
1. chassis-fan cable 3. drive-power cable 5. optical-drive cable 2. power-button cable 4. system board 6. hard-drive cable 3. Remove the screw that secures the I/O cover to the chassis and lift the cover off the system board. 4. Remove the screws that secure the system board to the chassis. 5. Starting from the edge near the memory-module slots, gently lift the system board off the chassis. a. system board b. screws (7) c.
31 Replacing the system board NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. NOTE: Your computer’s Service Tag is stored in the system board.
32 BIOS setup program Overview CAUTION: Unless you are an expert computer user, do not change the settings in the BIOS setup program. Certain changes can make your computer work incorrectly. NOTE: Before you change BIOS setup program, it is recommended that you write down the BIOS setup program screen information for future reference. Use BIOS setup program to: • • • Get information about the hardware installed in your computer, such as the amount of RAM, the size of the hard drive, and so on.
1. jumper plug 3. pin 2 2. pin 1 4. pin 3 5. Close the side-chassis. Post-requisites 1. Replace the front bezel. 2. Replace the computer cover. Clearing CMOS Settings NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer.
1. jumper plug 3. pin 2 2. pin 1 4. pin 3 5. Close the side-chassis. Post-requisites 1. Replace the front bezel. 2. Replace the computer cover.
33 Flashing the BIOS You may need to flash (update) the BIOS when an update is available or when you replace the system board. To flash the BIOS: 1. Turn on your computer. 2. Go to www.dell.com/support. 3. Click Product support, enter the Service Tag of your computer, and then click Submit. NOTE: If you do not have the Service Tag, use the auto-detect feature or manually browse for your computer model. 4. Click Drivers & downloads > Find it myself. 5. Select the operating system installed on your computer.
34 Getting help and contacting Dell Self-help resources You can get information and help on Dell products and services using these self-help resources: Information about Dell products and services www.dell.com Windows 8.1 and Windows 10 Dell Help & Support app Windows 10 Get started app Windows 8.1 Help + Tips app Accessing help in Windows 8, Windows 8.1, and Windows 10 In Windows search, type Help and Support, and press Enter. Accessing help in Windows 7 Click Start > Help and Support.
