Inspiron 5485 Service Manual 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. © 2018 - 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.................................
Post-requisites..................................................................................................................................................................... 27 14 Removing the coin-cell battery...................................................................................................28 Prerequisites.........................................................................................................................................................................
Post-requisites..................................................................................................................................................................... 44 26 Removing the speakers............................................................................................................. 45 Prerequisites........................................................................................................................................................................
37 Replacing the system board.......................................................................................................62 Procedure............................................................................................................................................................................. 62 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. 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. 4.
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 Safety instructions Use the following safety guidelines to protect your computer from potential damage and ensure your personal safety. NOTE: 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. NOTE: Disconnect all power sources before opening the computer cover or panels.
• • 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. Before transporting a static-sensitive component, place it in an anti-static container or packaging. ESD field service kit The unmonitored Field Service kit is the most commonly used service kit.
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. 2. 3. 4. 5. Get a firm balanced footing.
4 Recommended tools The procedures in this document may require the following tools: • • 12 Phillips screwdriver #1 Plastic scribe 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 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 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. Procedure 1. Loosen the three captive screws that secure the base cover to the palm-rest and keyboard assembly.
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 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.
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 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. 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 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. Procedure 1. Align the screw holes on the battery with the screw holes on the palm-rest and keyboard assembly. 2.
Post-requisites Replace the base cover.
10 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. Prerequisites Remove the base cover. Procedure 1. Open the flap on the memory module. 2.
11 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. Procedure 1. Lift the flap from the memory module slot. 2.
12 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. Prerequisites Remove the base cover. Procedure 1. Locate the wireless card. 2.
Removing the wireless card
13 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. Procedure 1. Connect the antenna cables to the wireless card.
14 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.
15 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. Procedure 1. Adhere the coin-cell battery assembly to the palm-rest and keyboard assembly. 2.
16 Removing the 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. Prerequisites Remove the base cover. Procedure 1. Peel the tape off the heat sink. 2.
17 Replacing the 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. Procedure 1. Align the screw holes on the fan with the screw holes on the palm-rest and keyboard assembly. 2.
18 Removing the solid-state 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. 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 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: Solid-state drives are fragile. Exercise care when handling the solid-state drive.
20 Removing the 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. 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 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: Hard drives are fragile. Exercise care when handling the hard drive. Procedure 1.
Post-requisites 1. Replace the battery. 2. Replace the base cover.
22 Removing the I/O 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. Prerequisites 1. Remove the base cover. 2. Remove the fan. Procedure 1.
23 Replacing the I/O 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. Procedure 1.
24 Removing the touchpad 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. Prerequisites 1. Remove the base cover. 2. Remove the battery. Procedure 1.
Removing the touchpad
25 Replacing the touchpad 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. Procedure 1. Align the screw holes on the touchpad with the screw holes on the palm-rest and keyboard assembly.
Post-requisites 1. Replace the battery. 2. Replace the base cover.
26 Removing the speakers 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. Prerequisites 1. Remove the base cover. 2. Remove the battery. Procedure 1.
27 Replacing the speakers 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. Procedure 1. Using the alignment posts, align and place the speakers on the palm-rest and keyboard assembly. 2.
28 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.
Removing the heat sink
29 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.
Post-requisites Replace the base cover.
30 Removing the display assembly 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. Prerequisites 1. Remove the base cover. 2. Remove the wireless card. Procedure 1.
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 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. Procedure 1.
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 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: Applicable only for computers that are shipped with fingerprint reader.
33 Replacing the power button with fingerprint reader 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: Applicable only for computers that are shipped with fingerprint reader.
34 Removing the power-adapter port 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. Prerequisites Remove the base cover. Procedure 1.
35 Replacing the power-adapter port 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. Procedure 1.
36 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.
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 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.
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 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. Prerequisites 1. Remove the base cover. 2. Remove the battery. 3.
39 Replacing the palm-rest and keyboard assembly 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. 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.
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. The boot sequence screen also displays the option to access the System Setup screen.
Advanced Default: Enabled USB Emulation Enables or disables the USB emulation feature. This feature defines how the BIOS, in the absence of a USB-aware operating system, handles USB devices. USB emulation is always enabled during POST. NOTE: You cannot boot any type of USB device (floppy, hard drive, or memory key) when this option is off. Default: Enabled USB Wake Support Allows you to enable USB devices to wake the computer from standby or to disable the USB wake support feature.
Advanced Default: OS Automatic Selection Maintenance Data Wipe on next boot Enables or disables data wipe on the next boot. Default: Disabled BIOS Recovery from Hard Drive Enables the user to recover from certain corrupted BIOS conditions from a recovery file on the user primary hard drive or an external USB key. BIOS Auto-Recovery Enables BIOS to automatically recover BIOS without user actions.
Security Default: Disabled Firmware TPM Enable or disable the firmware TPM. Default: Enabled PPI Bypass for Clear Command Allows you to control the TPM Physical Presence Interface (PPI). When enabled, this setting will allow the OS to skip BIOS PPI user prompts when issuing the Clear command. Changes to this setting take effect immediately. Default: Disabled UEFI Firmware Capsule Updates Enables or disables BIOS updates through UEFI capsule update packages.
4. Wait for one minute. 5. Replace the coin-cell battery. 6. Connect the battery cable to the system board. 7. Replace the base cover. Clearing BIOS (System Setup) and System passwords To clear the system or BIOS passwords, contact Dell technical support as described at www.dell.com/contactdell. NOTE: For information on how to reset Windows or application passwords, refer to the documentation accompanying Windows or your application.
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.
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. Computer is in sleep state, hibernation, or turned off NOTE: Hard-drive activity light is supported only on computers shipped with hard drive. The power and battery-status light blinks amber along with beep codes indicating failures.
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. 6. Scroll down the page and expand BIOS. 7. Click Download to download the latest version of the BIOS for your computer. 8.
