Latitude 3330 Service Manual Regulatory Model: P158G/P159G Regulatory Type: P158G002/P159G002 April 2022 Rev.
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. © 2022 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies, Dell, and other trademarks are trademarks of Dell Inc. or its subsidiaries.
Contents Chapter 1: Working inside your computer...................................................................................... 6 Safety instructions.............................................................................................................................................................. 6 Before working inside your computer....................................................................................................................... 6 Safety precautions....................
Removing the display assembly............................................................................................................................... 35 Installing the display assembly..................................................................................................................................39 I/O board.............................................................................................................................................................................
Built-in self-test (BIST)................................................................................................................................................... 83 M-BIST...........................................................................................................................................................................83 LCD Power rail test (L-BIST)................................................................................................................................
1 Working inside your computer Safety instructions Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unless otherwise noted, each procedure included in this document assumes that you have read the safety information that shipped with your computer. WARNING: Before working inside your computer, read the safety information that is shipped with your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.
5. Remove any media card and optical disk from your computer, if applicable. 6. Enter the service mode, if you are able to power on your computer. Service Mode Service Mode is used to cut-off power, without disconnecting battery cable from system board prior conducting repairs in the computer. CAUTION: If you are unable to turn on the computer to put it into Service Mode or the computer does not support Service Mode then proceed to disconnect the battery cable.
Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher than in previous Dell products. For this reason, some previously approved methods of handling parts are no longer applicable. Two recognized types of ESD damage are catastrophic and intermittent failures. ● Catastrophic – Catastrophic failures represent approximately 20 percent of ESD-related failures. The damage causes an immediate and complete loss of device functionality.
● ESD Packaging – All ESD-sensitive devices must be shipped and received in static-safe packaging. Metal, static-shielded bags are preferred. However, you should always return the damaged part using the same ESD bag and packaging that the new part arrived in. The ESD bag should be folded over and taped shut and all the same foam packing material should be used in the original box that the new part arrived in.
2 Removing and installing components NOTE: The images in this document may differ from your computer depending on the configuration you ordered. Recommended tools The procedures in this document may require the following tools: ● Phillips screwdriver #0 ● Phillips screwdriver #1 ● Plastic scribe 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.
Table 1. Screw list (continued) Component Screw type Quantity Display hinges M2x3 4 I/O board M2x3 2 Power button with optional fingerprint reader M2x3 1 Touchpad bracket ● M2x2.5 ● M2x1.8 ● 3 ● 2 Touchpad module Screw image ● ● USB type-C bracket M2x3 1 System board M2x2 4 Major components of Latitude 3330 The following image shows the major components of Latitude 3330.
Removing and installing components
1. 3. 5. 7. 9. 11. 13. 15. Base cover WLAN card Speakers Coin-cell battery Display assembly Thermal heat-sink I/O board Power button with optional fingerprint reader 2. 4. 6. 8. 10. 12. 14. 16. Battery System board Touchpad Palm-rest and keyboard assembly Thermal fan I/O board cable Power adapter port M.2 2280 solid-state drive NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased.
Installing the micro-secure digital card Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following images indicate the location of the micro-secure digital card and provide a visual representation of the installation procedure. Steps Slide the micro-secure digital card into the micro-secure digital card slot until it clicks into place. Next steps 1. Follow the procedure in After working inside your computer.
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Steps 1. Loosen the seven captive screws that secure the base cover to the chassis. 2. Using a plastic scribe, pry open the base cover starting from the recesses, which are located in the U-shaped indents at the top edge of the base cover, near the hinges. 3. Pry open the top side of the base cover and continue working on the left, right and, bottom sides to open the base cover. 4. Carefully lift and remove the base cover from the chassis.
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Steps 1. Place the base cover on top of the chassis. 2. Align the screw holes on the base cover with the screw holes on the palm-rest and keyboard assembly, and snap the base cover latches into place. 3. Tighten the seven captive screws to secure the base cover to the chassis. Next steps 1. Follow the procedure in After working inside your computer.
Battery Lithium-ion battery precautions CAUTION: ● Exercise caution when handling Lithium-ion batteries. ● Discharge the battery completely before removing it. Disconnect the AC power adapter from the system and operate the computer solely on battery power—the battery is fully discharged when the computer no longer turns on when the power button is pressed. ● Do not crush, drop, mutilate, or penetrate the battery with foreign objects.
Steps 1. Use the pull tab to disconnect the battery cable from the connector system board. 2. Remove the three screws (M2x3) that secure the 3-cell battery to the palm-rest and keyboard assembly. 3. Lift the 3-cell battery, along with the battery cable, at an angle. Slide out the 3-cell battery to remove it from the palm-rest and keyboard assembly. 4. Disconnect and remove the battery cable from the 3-cell battery.
Steps 1. Connect the battery cable to the 3-cell battery. 2. Slide and place the 3-cell battery, along with the battery cable, at an angle on the palm-rest and keyboard assembly. 3. Align the screw holes on the 3-cell battery to the screw holes on the palm-rest and keyboard assembly. 4. Replace the three screws (M2x3) to secure the 3-cell battery to the palm-rest and keyboard assembly. 5. Connect the battery cable to the connector on the system board. Next steps 1. Install the base cover. 2.
Removing the 4-cell battery Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. Steps 1. Use the pull tab to disconnect the battery cable from the connector system board. 2. Remove the three screws (M2x3) that secure the 4-cell battery to the palm-rest and keyboard assembly. 3. Lift the 4-cell battery, along with the battery cable, at an angle. Slide out the 4-cell battery to remove it from the palm-rest and keyboard assembly. 4.
NOTE: There is a protective mylar sheet covering the M.2 2230 solid-state drive. This mylar sheet must be opened in order to proceed with the removal procedure. NOTE: Be careful when opening the mylar sheet as it can easily rip. 2. Remove the two screws (M2x2) that secure the M.2 2230 solid-state drive thermal plate to the system board. 3. Remove the M.2 2230 solid-state drive thermal plate from the system board. 4. Slide and remove the M.2 2230 solid-state drive from the M.
NOTE: The M.2 card that is installed on your system depends on the configuration ordered. Supported card configurations on the M.2 card slot are: ● M.2 2230 solid-state drive ● M.2 2280 solid-state drive The following images indicate the location of the M.2 2280 solid-state drive and provide a visual representation of the removal procedure. Steps 1. Open the M.2 2280 solid-state drive mylar sheet that covers the M.2 2280 solid-state drive. NOTE: There is a protective mylar sheet covering the M.
About this task The following images indicate the location of the M.2 2280 solid-state drive and provide a visual representation of the installation procedure. Steps 1. Align the notch on the M.2 2280 solid-state drive with the tab on the M.2 card connector on the system board. 2. Slide the M.2 2280 solid-state drive into the M.2 card connector on the system board. NOTE: A thermal pad sticker is adhered to the system board underneath the M.2280 solid-state drive. If in the process of replacing the M.
Wireless card Removing the wireless card Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the 3-cell battery or the 4-cell battery, whichever applicable. About this task The following images indicate the location of the wireless card and provide a visual representation of the removal procedure.
Steps 1. Remove the screw (M2x3) that secures wireless-card bracket to the system board. 2. Slide and remove the wireless-card bracket from the system. 3. Disconnect the WLAN-antenna cables from the respective connectors on the wireless card. 4. Lift and remove the wireless card from the wireless card slot on the system board. Installing the wireless card Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
Steps 1. Connect the WLAN-antenna cables to the respective connectors on the wireless card. NOTE: The WLAN-antenna cable connectors are fragile, and utmost care should be taken while replacing them. Table 2. WLAN-antenna cable color scheme Connectors on the wireless card Antenna-cable color Main - White triangle (△) on the wireless module of the system board White cable Auxiliary - Solid triangle (▲) on the wireless module of the system board Black cable 2.
3. Slide the wireless card at an angle into the wireless card slot. 4. Place the wireless-card bracket on the wireless card. 5. Align the screw hole on the wireless-card bracket with the screw hole on the system board. 6. Replace the screw (M2x3) to secure the wireless-card bracket and the wireless card to the system board. Next steps 1. Install the 3-cell battery or the 4-cell battery, whichever applicable. 2. Install the base cover. 3. Follow the procedure in After working inside your computer.
Steps 1. Disconnect the thermal-fan cable from the connector on the system board. 2. Remove the two screws (M2x3) that secure the thermal fan to the system board. 3. Lift and remove the thermal fan from the system board. Installing the thermal module Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
Steps 1. Place the thermal fan into its slot on the system board. 2. Align the screw holes on the thermal fan to the screw holes on the system board. 3. Replace the two screws (M2x3) to secure the thermal fan to the system board. 4. Connect the thermal-fan cable to the connector on the system board. Next steps 1. Install the 3-cell battery or the 4-cell battery, whichever applicable. 2. Install the base cover. 3. Follow the procedure in After working inside your computer.
2. Remove the base cover. 3. Remove the 3-cell battery or the 4-cell battery, whichever applicable. About this task NOTE: The thermal heat-sink may become hot during normal operation. Allow sufficient time for the thermal heat-sink to cool before you touch it. NOTE: For maximum cooling of the processor, do not touch the heat transfer areas on the thermal heat-sink. The oils in your skin can reduce the heat transfer capability of the thermal grease.
The following image indicates the location of the thermal heat-sink and provides a visual representation of the installation procedure. Steps 1. Place the thermal heat-sink into its slot on the system board. 2. Align the screw holes on the thermal heat-sink to the screw holes on the system board. 3. Tighten the four captive screws to secure the thermal heat-sink to the system board.
About this task NOTE: When the coin-cell battery is removed, it clears the CMOS settings. The following image indicates the location of the coin-cell battery and provides a visual representation of the removal procedure. Steps 1. Disconnect the coin-cell battery cable from the connector on the system board. 2. Using a plastic scribe, pry the coin-cell battery off its slot on the palm-rest and keyboard assembly.
Steps 1. Align and place the coin-cell battery into its slot on the palm-rest and keyboard assembly. 2. Connect the coin-cell battery cable to the connector on the system board. Next steps 1. Install the 3-cell battery or the 4-cell battery, whichever applicable. 2. Install the base cover. 3. Follow the procedure in After working inside your computer. Display assembly Removing the display assembly Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3.
Removing and installing components
Removing and installing components 37
Steps 1. Remove the two screws (M2x3) that secure the display-cable bracket in place to the system board. 2. Remove the display-cable bracket from the system board. 3. Peel the adhesive tape that secures the display cable. 4. Disconnect the display cable from the connector on the system board. 5.
Installing the display assembly Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task NOTE: The display assembly installation procedure is the same for both clamshell and 2-in-1 convertible chassis. NOTE: Ensure that the hinges are opened to the maximum before replacing the display assembly on the palm-rest and keyboard assembly.
Removing and installing components
Removing and installing components 41
Steps 1. Place the display assembly on a flat surface. 2. Slide the display assembly at an angle and place the system chassis under the hinges of the display assembly. 3. Gently press down on the display hinges to align the screw holes on the display hinges with the screw holes on the palm-rest and keyboard assembly. 4. Replace the four screws (M2x3) screws to secure the display hinges to the palm-rest and keyboard assembly. 5. Connect the display cable to its connector on the system board. 6.
Steps 1. Remove the two screws (M2x3) that secure the left display hinge to the system. 2. Lift the left display hinge in upward direction away from the system. 3. Open the latch and disconnect the I/O-board cable from the connector on the I/O board. 4. Disconnect the fingerprint reader flexible printed circuits from the connector on the I/O board. NOTE: This procedure applies only to systems shipped with a power button with fingerprint reader installed. 5.
Steps 1. Align and place the I/O board on the palm-rest and keyboard assembly. 2. Align the screw holes on the I/O board with the screw holes on the palm-rest and keyboard assembly. 3. Replace the two screws (M2x3) to secure the I/O board to the palm-rest and keyboard assembly. 4. Connect the fingerprint reader flexible printed circuits to the connector on the I/O board. NOTE: This procedure applies only to systems shipped with a power button with fingerprint reader installed. 5.
Power button Removing the power button Prerequisites 1. 2. 3. 4. 5. Follow the procedure in Before working inside your computer. Remove the base cover. Remove the 3-cell battery or the 4-cell battery, whichever applicable. Remove the coin-cell battery. Remove the display assembly. About this task The following images indicate the location of the power button and provide a visual representation of the removal procedure. Steps 1.
Installing the power button Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following images indicate the location of the power button and provide a visual representation of the installation procedure. Steps 1. Align and place the power button into its slot on the palm-rest and keyboard assembly. 2. Align the screw hole on the power button to the screw hole on the palm-rest and keyboard assembly. 3.
Power button with optional fingerprint reader Removing the power button with optional fingerprint reader Prerequisites 1. 2. 3. 4. 5. Follow the procedure in Before working inside your computer. Remove the base cover. Remove the 3-cell battery or the 4-cell battery, whichever applicable. Remove the coin-cell battery. Remove the display assembly.
Installing the power button with optional fingerprint reader Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following images indicate the location of the power button with optional fingerprint reader and provide a visual representation of the installation procedure. Steps 1. Align and place the power button with optional fingerprint reader into its slot on the palm-rest and keyboard assembly. 2.
5. Follow the procedure in After working inside your computer. Speakers Removing the speakers Prerequisites 1. 2. 3. 4. Follow the procedure in Before working inside your computer. Remove the base cover. Remove the 3-cell battery or the 4-cell battery, whichever applicable. Remove the wireless card. About this task The following images indicate the location of the speakers and provide a visual representation of the removal procedure.
Steps 1. Open the latch and disconnect the touchpad flexible flat cable and keyboard flexible printed circuits from the connector on the system board. 2. Disconnect the speaker cable from the connector on the system board. 3. Peel the adhesive tapes that secure the speaker cable in place to the palm-rest and keyboard assembly.
4. Unroute the speaker cable from the routing guides on the palm-rest and keyboard assembly. 5. Remove the speakers from the chassis. Installing the speakers Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task NOTE: If the rubber grommets are pushed out when removing the speakers, push them back in place before replacing the speakers.
Steps 1. Align and place the speakers in the slot on the chassis. 2. Route the speaker cables through the routing guides on the palm-rest and keyboard assembly. 3. Adhere the adhesive tapes to secure the speaker cable to the palm-rest and keyboard assembly. 4. Connect the speaker cable to the connector on the system board.
5. Connect the touchpad flexible flat cable and keyboard flexible printed circuits to the connector on the system board and close the latch. Next steps 1. 2. 3. 4. Install the wireless card. Install the 3-cell battery or the 4-cell battery, whichever applicable. Install the base cover. Follow the procedure in After working inside your computer. Touchpad Removing the touchpad Prerequisites 1. 2. 3. 4. Follow the procedure in Before working inside your computer. Remove the base cover.
2. Peel the adhesive shielding cover from over the touchpad. 3. Remove the three screws (M2x2.5) that secure the touchpad bracket to the touchpad module. 4. Lift and remove the touchpad bracket from the touchpad module. 5. Remove the two screws (M2x1.8) that secure the touchpad module to the palm-rest and keyboard assembly. 6. Lift the touchpad module at an angle and slide it out to remove the touchpad module from the palm-rest and keyboard assembly.
Next steps 1. 2. 3. 4. Install the speakers. Install the 3-cell battery or the 4-cell battery, whichever applicable. Install the base cover. Follow the procedure in After working inside your computer. System board Removing the system board Prerequisites 1. 2. 3. 4. 5. 6. 7. 8. Follow the procedure in Before working inside your computer. Remove the base cover. Remove the 3-cell battery or the 4-cell battery, whichever applicable. Remove the M.2 2230 solid-state drive or the M.
3. 5. 7. 9. 11. Coin-cell battery cable connector Power adapter port cable connector M.2 solid-state drive connector Keyboard backlit LED cable connector WLAN card connector 4. 6. 8. 10. 12. Display cable connector Battery cable connector Keyboard cable connector Touchpad cable connector I/O board cable connector The following images indicate the location of the system board and provide a visual representation of the removal procedure.
Steps 1. Remove the two screws (M2x3) that secure the display-cable bracket to the system board. 2. Remove the display-cable bracket from the system board. 3. Remove the two screws (M2x3) that secure the right display hinge to the system board. 4. Lift the right display hinge in upward direction away from the system board. 5. Remove the screw (M2x3) that secures the USB type-C bracket to the system board. 6. Lift and remove the USB type-C bracket from the system board. 7.
Figure 2. System-board connectors 1. 3. 5. 7. 9. 11. Speaker cable connector Coin-cell battery cable connector Power adapter port cable connector M.2 solid-state drive connector Keyboard backlit LED cable connector WLAN card connector 2. 4. 6. 8. 10. 12.
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Steps 1. Align and place the system board on the palm-rest and keyboard assembly. 2. Align the screw holes on the system board with the screw holes on the palm-rest and keyboard assembly. 3. Replace the four screws (M2x2) to secure the system board to the palm-rest and keyboard assembly. 4. Connect the following cables to the respective connectors on the system board: a. b. c. d. e. f. g.
9. Align the screw holes on the right display hinge with the screw holes on the system board. 10. Replace the two screws (M2x3) to secure the right display hinge to the system board. 11. Align and place the display-cable bracket on the display-cable connector on the system board. 12. Replace the two screws (M2x3) to secure the display-cable bracket to the system board. Next steps 1. 2. 3. 4. 5. 6. 7. 8. Install the display assembly. Install the thermal heat-sink. Install the thermal fan.
Steps 1. Remove the two screws (M2x3) that secure the right display hinge to the system. 2. Lift the right display hinge in upward direction away from the system. 3. Remove the screw (M2x3) that secures the USB type-C bracket to the system board. 4. Lift and remove the USB type-C bracket from the system board. 5. Disconnect the power-adapter port cable from the connector on the system board and remove the power-adapter port from the system board.
Steps 1. Align and place the power-adapter port on the system board. 2. Connect the power-adapter port cable to the connector on the system board. 3. Align and place the USB type-C bracket on the system board. 4. Align the screw holes on the USB type-C bracket with the screw holes on the system board. 5. Replace the screw (M2x3) to secure the USB type-C bracket to the system board. 6. Gently press the right display hinge in downward direction towards the system. 7.
7. Install the base cover. 8. Follow the procedure in After working inside your computer. Palm-rest and keyboard assembly Removing the palm-rest and keyboard assembly Prerequisites 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. Follow the procedure in Before working inside your computer. Remove the base cover. Remove the 3-cell battery or the 4-cell battery, whichever applicable. Remove the M.2 2230 solid-state drive or the M.2 2280 solid-state drive, whichever applicable. Remove the wireless card.
Steps After performing the pre-requisites, you are left with the palm-rest and keyboard assembly. Installing the palm-rest and keyboard assembly Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the palm-rest and keyboard assembly and provides a visual representation of the installation procedure.
Steps Place the palm-rest and keyboard assembly on a flat surface and perform the post-requisites to install the palm-rest and keyboard assembly. Next steps 1. Install the power-adapter port. 2. Install the system board. NOTE: The system board can be installed with the thermal heat-sink attached to it in order to simplify the procedure and preserve the thermal bond between the system board and the thermal heat-sink. 3. Install the touchpad. 4. Install the speakers. 5.
3 Drivers and downloads When troubleshooting, downloading or installing drivers it is recommended that you read the Dell Knowledge Based article, Drivers and Downloads FAQ 000123347.
4 BIOS 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: Depending on the computer and its installed devices, the items listed in this section may or may not be displayed. NOTE: Before you change BIOS Setup program, it is recommended that you write down the BIOS Setup program screen information for future reference.
Table 3. Navigation keys (continued) Keys Navigation Esc Moves to the previous page until you view the main screen. Pressing Esc in the main screen displays a message that prompts you to save any unsaved changes and restarts the system. One time boot menu To enter one time boot menu, turn on your computer, and then press F12 immediately. NOTE: It is recommended to shutdown the computer if it is on. The one-time boot menu displays the devices that you can boot from including the diagnostic option.
Table 4. System setup options—System information menu (continued) Overview Maximum Clock Speed Displays the maximum processor clock speed. Minimum Clock Speed Displays the minimum processor clock speed. Current Clock Speed Displays the current processor clock speed. Core Count Displays the number of cores on the processor. Processor ID Displays the processor identification code. Processor L2 Cache Displays the processor L2 Cache size. Processor L3 Cache Displays the processor L3 Cache size.
Table 5. System setup options—Boot Configuration menu (continued) Boot Configuration By default, the custom mode option is not enabled. Custom Mode Key Management Select the custom values for expert key management. Table 6. System setup options—Integrated Devices menu Integrated Devices Date/Time Displays the current date in MM/DD/YYYY format and current time in HH:MM:SS AM/PM format. Camera Enables or disable the camera.
Table 7. System setup options—Storage menu (continued) Storage Secure Digital (SD) Card Enable or disable the SD card. By default, the Secure Digital (SD) Card option is enabled. Secure Digital (SD) Card Read-Only Mode Enable or disable the SD card read-only mode. By default, the Secure Digital (SD) Card Read-Only Mode option is not enabled. Table 8.
Table 10. System setup options—Power menu (continued) Power Peak Shift Enables the system to run on battery during peak power usage hours. Enable Peak Shift By default, the Enable Peak Shift option is disabled. Thermal Management Enables to cool the fan and processor heat management to adjust the system performance, noise, and temperature. By default, the Optimized option is enabled.
Table 11. System setup options—Security menu (continued) Security Clear Enables to clear the TPM owner information and returns the TPM to the default state. By default, the Clear option is disabled. PPI Bypass for Clear Commands Controls the TPM Physical Presence Interface (PPI). By default, the PPI ByPass for clear Commands option is disabled. SMM Security Mitigation Enable or disable additional UEFI SMM Security Mitigation protections. By default, the option is enabled.
Table 12. System setup options—Passwords menu (continued) Passwords Password Changes Enable Non-Admin Password Changes Enable or disable to change system and hard drive password without the need for admin password. By default, the option is enabled. Admin Setup Lockout Enable Admin Setup Lockout Enables administrators control over how their users can or cannot access BIOS setup. By default, the option is disabled.
Table 14. System setup options—System Management menu System Management Service Tag Displays the Service Tag of the system. Asset Tag Create a system Asset Tag. AC Behavior Wake on AC Enable or disable the wake on AC option. By default, the option is disabled. Auto on Time Enable to set the system to turn on automatically every day or on a preselected date and time. This option can be configured only if the Auto On Time is set to Everyday, Weekdays, or Selected Days.
Table 17. System setup options—Virtualization menu (continued) Virtualization Intel Trusted Execution Technology (TXT) Enable Intel Trusted Execution Technology (TXT) Specifies whether a measured Virtual Machine Monitor (MVMM) can use the additional hardware capabilities that are provided by Intel Trusted Execution Technology. The following must be enabled in order to enable Intel TXT.
Table 19. System setup options—System Logs menu (continued) System Logs Clear Thermal Event Log Displays Thermal events. By default, the Keep Log option is enabled. Power Event Log Clear Power Event Log Displays power events. By default, the Keep Log option is enabled. License Information Displays the license information of the system.
Steps 1. Follow the procedure from step 1 to step 6 in Updating the BIOS in Windows to download the latest BIOS setup program file. 2. Create a bootable USB drive. For more information, search in the Knowledge Base Resource at www.dell.com/support. 3. Copy the BIOS setup program file to the bootable USB drive. 4. Connect the bootable USB drive to the computer that needs the BIOS update. 5. Restart the computer and press F12 . 6. Select the USB drive from the One Time Boot Menu. 7.
System and setup password Table 20. System and setup password Password type Description System password Password that you must enter to log in to your system. Setup password Password that you must enter to access and make changes to the BIOS settings of your computer. You can create a system password and a setup password to secure your computer. CAUTION: The password features provide a basic level of security for the data on your computer.
Steps 1. In the System BIOS or System Setup screen, select System Security and press Enter. The System Security screen is displayed. 2. In the System Security screen, verify that Password Status is Unlocked. 3. Select System Password, update, or delete the existing system password, and press Enter or Tab. 4. Select Setup Password, update, or delete the existing setup password, and press Enter or Tab. NOTE: If you change the System and/or Setup password, reenter the new password when prompted.
5 Troubleshooting Handling swollen Lithium-ion batteries Like most laptops, Dell laptops use lithium-ion batteries. One type of lithium-ion battery is the lithium-ion polymer battery. Lithium-ion polymer batteries have increased in popularity in recent years and have become standard in the electronics industry due to customer preferences for a slim form factor (especially with newer ultra-thin laptops) and long battery life.
● Run thorough tests to introduce additional test options to provide extra information about the failed device(s) ● View status messages that inform you if tests are completed successfully ● View error messages that inform you of problems encountered during testing NOTE: Some tests for specific devices require user interaction. Always ensure that you are present at the computer terminal when the diagnostic tests are performed. For more information, see https://www.dell.com/support/kbdoc/000180971.
LCD Power rail test (L-BIST) L-BIST is an enhancement to the single LED error code diagnostics and is automatically initiated during POST. L-BIST will check the LCD power rail. If there is no power being supplied to the LCD (i.e., the L-BIST circuit fails), the battery status LED will flash either an error code [2,8] or an error code [2,7]. NOTE: If L-BIST fails, LCD-BIST cannot function as no power will be supplied to the LCD. How to invoke L-BIST Test: 1. Press the power button to start the system. 2.
Table 22. System-diagnostic lights (continued) Blinking pattern Amber White Problem description Suggested resolution 1 6 Generic catch-all for ungraceful EC code flow errors Disconnect all power source (AC, battery, coin cell) and drain flea power by pressing and holding down power button for 3-5 seconds.
Table 22. System-diagnostic lights (continued) Blinking pattern Amber White Problem description Suggested resolution 3 5 Power rail failure Replace the system board. 3 6 Flash corruption detected by SBIOS. ● ● ● ● 3 7 Timeout waiting on ME to reply to HECI message. Press power button for over 25 seconds to do RTC reset. If problem persists, replace the system board.
Backup media and recovery options It is recommended to create a recovery drive to troubleshoot and fix problems that may occur with Windows. Dell proposes multiple options for recovering Windows operating system on your Dell PC. For more information. see Dell Windows Backup Media and Recovery Options. WiFi power cycle About this task If your computer is unable to access the internet due to WiFi connectivity issues a WiFi power cycle procedure may be performed.
6 Getting help and contacting Dell Self-help resources You can get information and help on Dell products and services using these self-help resources: Table 23. Self-help resources Self-help resources Resource location Information about Dell products and services www.dell.com My Dell app Tips Contact Support In Windows search, type Contact Support, and press Enter. Online help for operating system www.dell.com/support/windows www.dell.
