Inspiron 5485 Service Manual Computer Model: Inspiron 5485 Regulatory Model: P92G Regulatory Type: P92G002
Notes, cautions, and warnings NOTE: A NOTE indicates important information that helps you make better use of your product. 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. © 2019 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries.
Contents 1 Before working inside your computer............................................................................................................. 7 Before you begin ................................................................................................................................................................7 2 After working inside your computer............................................................................................................... 8 3 Safety instructions....
13 Replacing the wireless card........................................................................................................................ 27 Procedure..........................................................................................................................................................................27 Post-requisites.................................................................................................................................................................
25 Replacing the touchpad............................................................................................................................. 43 Procedure..........................................................................................................................................................................43 Post-requisites.................................................................................................................................................................
Prerequisites..................................................................................................................................................................... 60 Procedure......................................................................................................................................................................... 60 37 Replacing the system board.......................................................................................................................
1 Before working inside your computer NOTE: The images in this document may differ from your computer depending on the configuration you ordered. Before you begin 1 Save and close all open files and exit all open applications. 2 Shut down your computer. Click Start > Power > Shut down. NOTE: If you are using a different operating system, see the documentation of your operating system for shut-down instructions. 3 Disconnect your computer and all attached devices from their electrical outlets.
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.
3 Safety instructions Use the following safety guidelines to protect your computer from potential damage and ensure your personal safety. WARNING: Before working inside your computer, read the safety information that shipped with your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. WARNING: Disconnect all power sources before opening the computer cover or panels.
• Handle all static-sensitive components in a static-safe area. If possible, use anti-static floor pads and workbench pads. • When unpacking a static-sensitive component from its shipping carton, do not remove the component from the anti-static packing material until you are ready to install the component. Before unwrapping the anti-static packaging, ensure that you discharge static electricity from your body.
Transporting sensitive components When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport. Lifting equipment Adhere to the following guidelines when lifting heavy weight equipment: CAUTION: Do not lift greater than 50 pounds. Always obtain additional resources or use a mechanical lifting device. 1 Get a firm balanced footing.
4 Recommended tools The procedures in this document may require the following tools: • Phillips screwdriver #1 • Plastic scribe 12 Recommended tools
5 Screw list NOTE: When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and then place them in a screw storage box. This is to ensure that the correct number of screws and correct screw type is restored when the component is replaced. NOTE: Some computers have magnetic surfaces. Ensure that the screws are not left attached to such surface when replacing a component. NOTE: Screw color may vary with the configuration ordered. Table 1.
Component Secured to Screw type Quantity Wireless-card bracket System board M2x3 1 Power-adapter port Palm rest and keyboard assembly M2x2 1 Power-button board Palm rest and keyboard assembly M2x3 1 Power button with fingerprint reader (optional) Palm rest and keyboard assembly M2x2 1 Solid-state drive Palm rest and keyboard assembly M2x2.
6 Removing the base cover WARNING: 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 following steps are applicable only if you want to further remove other components from your computer. 5 Peel the tape that secures the battery cable to the system board. 6 Peel the tape that secures the battery cable connection to the system board. 7 Disconnect the battery cable from the system board. 8 Press and hold the power button for five seconds to ground the computer and drain the flea power.
7 Replacing the base cover WARNING: 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.
6 Tighten the three captive screws that secure the base cover to the palm-rest and keyboard assembly. 7 Replace the 6 screws (M2x5) that secure the base cover to the palm-rest and keyboard assembly.
8 Removing the battery WARNING: 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. Lithium-ion battery precautions CAUTION: • Exercise caution when handling Lithium-ion batteries.
4 Remove the four screws (M2x3) that secure the battery to the palm-rest and keyboard assembly. 5 Lift the battery off the palm-rest and keyboard assembly. 6 Press and hold the power button for five seconds to ground the computer and drain the flea power.
9 Replacing the battery WARNING: 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.
Post-requisites Replace the base cover.
10 Removing the memory modules WARNING: 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. Prerequisites Remove the base cover. Procedure 1 Open the flap on the memory module.
11 Replacing the memory modules WARNING: 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. Procedure 1 Lift the flap from the memory module slot.
12 Removing the wireless card WARNING: 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. Prerequisites Remove the base cover. Procedure 1 Locate the wireless card.
Removing the wireless card
13 Replacing the wireless card WARNING: 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. Procedure 1 Connect the antenna cables to the wireless card.
14 Removing the coin-cell battery WARNING: 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.
15 Replacing the coin-cell battery WARNING: 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. Procedure 1 Adhere the coin-cell battery assembly to the palm-rest and keyboard assembly.
16 Removing the fan WARNING: 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. Prerequisites Remove the base cover. Procedure 1 Peel the tape off the heat sink.
17 Replacing the fan WARNING: 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. Procedure 1 Align the screw holes on the fan with the screw holes on the palm-rest and keyboard assembly.
18 Removing the solid-state drive WARNING: 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: Solid-state drives are fragile. Exercise care when handling the solid-state drive.
Removing the solid-state drive 33
19 Replacing the solid-state drive WARNING: 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: Solid-state drives are fragile. Exercise care when handling the solid-state drive.
20 Removing the hard drive WARNING: 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: Hard drives are fragile. Exercise care when handling the hard drive.
5 Remove the four screws (M3x3) that secure the hard-drive bracket to the hard drive. 6 Lift the hard-drive bracket off the hard drive.
21 Replacing the hard drive WARNING: 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: Hard drives are fragile. Exercise care when handling the hard drive.
Post-requisites 1 Replace the battery. 2 Replace the base cover.
22 Removing the I/O board WARNING: 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. Prerequisites 1 Remove the base cover. 2 Remove the fan.
23 Replacing the I/O board WARNING: 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.
24 Removing the touchpad WARNING: 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. Prerequisites 1 Remove the base cover. 2 Remove the battery.
Removing the touchpad
25 Replacing the touchpad WARNING: 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.
Post-requisites 1 Replace the battery. 2 Replace the base cover.
26 Removing the speakers WARNING: 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. Prerequisites 1 Remove the base cover. 2 Remove the battery.
27 Replacing the speakers WARNING: 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.
28 Removing the heat sink WARNING: 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. WARNING: The heat sink may become hot during normal operation.
Removing the heat sink
29 Replacing the heat sink WARNING: 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.
Post-requisites Replace the base cover.
30 Removing the display assembly WARNING: 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. Prerequisites 1 Remove the base cover. 2 Remove the wireless card.
7 Open the display at an angle of 90 degrees. 8 Lift the display assembly off the palm-rest and keyboard assembly.
Removing the display assembly 53
31 Replacing the display assembly WARNING: 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.
5 Slide the display cable into the connector on the system board and close the latch to secure the cable. 6 Adhere the tape to secure the display cable to the system board. 7 Slide the I/O-board cable into the connector on the I/O board and close the latch to secure the cable. 8 Adhere the tape to secure the I/O-board cable to the I/O board. Post-requisites 1 Replace the wireless card. 2 Replace the base cover.
32 Removing the power button with fingerprint reader WARNING: 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: Applicable only for computers that are shipped with fingerprint reader.
33 Replacing the power button with fingerprint reader WARNING: 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: Applicable only for computers that are shipped with fingerprint reader.
34 Removing the power-adapter port WARNING: 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. Prerequisites Remove the base cover.
35 Replacing the power-adapter port WARNING: 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.
36 Removing the system board WARNING: 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.
5 Disconnect the power-adapter port cable from the system board. 6 Remove the two screws (M2x3) that secure the USB Type-C port bracket to the system board. 7 Lift the USB Type-C port bracket off the system board. 8 Disconnect the speaker cable from the system board. 9 Open the latch and disconnect the keyboard cable from the system board. 10 Open the latch and disconnect the keyboard-backlight cable (optional) from the system board.
37 Replacing the system board WARNING: 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.
12 Connect the I/O cable to the system board and close the latch. 13 Adhere the tape that secures the I/O cable to the system board. Post-requisites 1 Replace the solid-state drive. 2 Replace the fan. 3 Replace the wireless card. 4 Replace the memory modules. 5 Replace the battery. 6 Replace the base cover.
Entering the Service Tag in the BIOS setup program 1 Turn on or restart your computer. 2 Press F2 when the Dell logo is displayed to enter the BIOS setup program. 3 Navigate to the Main tab and enter the Service Tag in the Service Tag Input field. NOTE: Service tag is the alphanumeric identifier located at the back side of your computer.
38 Removing the palm-rest and keyboard assembly WARNING: 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. Prerequisites 1 Remove the base cover. 2 Remove the battery.
Removing the palm-rest and keyboard assembly
39 Replacing the palm-rest and keyboard assembly WARNING: 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. Procedure Place the palm-rest and keyboard assembly on a clean and flat surface.
40 Device drivers Video drivers In the Device Manager, check if the video driver is installed. Install the video driver update from www.dell.com/support. Wireless and Bluetooth drivers In the Device Manager, check if the network card driver is installed. Install the driver updates from www.dell.com/support. In the Device Manager, check if the Bluetooth driver is installed. Install the driver updates from www.dell.com/support.
41 System setup NOTE: Depending on the computer and its installed devices, the items listed in this section may or may not be displayed. System setup 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.
• Bring up the one-time boot menu by pressing F12 key The one-time boot menu displays the devices that you can boot from including the diagnostic option. The boot menu options are: • Removable Drive (if available) • STXXXX Drive • Optical Drive (if available) • SATA Hard Drive (if available) • Diagnostics NOTE: XXX denotes the SATA drive number. NOTE: Choosing Diagnostics, will display the ePSA diagnostics screen.
Table 4. System setup options—Advanced menu Advanced PowerNow! Enable Enables or disables the dynamic frequency scaling and powersaving technology for the AMD processor. Default: Enabled Virtualization Enables or disables the Virtualization technology. Default: Enabled Integrated NIC Enables or disables the on-board LAN controller. Default: Enabled USB Emulation Enables or disables the USB emulation feature.
Advanced Battery Health Displays the battery health. Camera Enables or disables the camera. Default: Disabled Battery Charge Configuration Set the battery charge settings with a preselected custom charge start and stop. Default: Adaptive Advanced Battery Charge Configuration Enable Advanced Battery Charge Configuration from the beginning of the day to a specified work period. Default: Disabled Sleep Mode Selects the power-saving state when your computer is idle.
Security Password Change Allows you to permit or deny system password or HDD password changes. Default: Permitted Computrace Enables or disables the BIOS module interface of the optional Computrace Service from Absolute Software. Default: Deactivate SED Block SID Authentication Enables or disables SED Block SID Authentication.
Boot File Browser Add Boot Option Allows you to add the boot options. Table 7. System setup options—Exit menu Exit Exit Saving Changes Allows you to exit system setup and save your changes. Save Change Without Exit Allows you to save your changes without exiting the BIOS setup. Exit Discarding Changes Allows you to exit the BIOS setup without saving the changes. Load Optimal Defaults Allows you to restore default values for all system setup options.
42 Troubleshooting Enhanced Pre-Boot System Assessment (ePSA) diagnostics The ePSA diagnostics (also known as system diagnostics) performs a complete check of your hardware. The ePSA is embedded with the BIOS and is launched by the BIOS internally.
Power and battery-status light Indicates the power and battery-charge status Solid white — Power adapter is connected and the battery has more than 5 percent charge. Amber — Computer is running on battery and the battery has less than 5 percent charge. Off • Power adapter is connected and the battery is fully charged. • Computer is running on battery and the battery has more than 5 percent charge.
4 Connect the bootable USB drive to the computer that needs the BIOS update. 5 Restart the computer and press F12 when the Dell logo is displayed on the screen. 6 Boot to the USB drive from the One Time Boot Menu. 7 Type the BIOS setup program filename and press Enter. 8 The BIOS Update Utility appears. Follow the instructions on the screen to complete the BIOS update. Flashing the BIOS You may need to flash (update) the BIOS when an update is available or when you replace the system board.
