Service Manual
Page 3
... 2280 solid-state drive...22 Memory module...23 Removing the memory module...23 Installing the memory module...24 Wireless card...25 Removing the wireless card...25 Installing the wireless card...26 Display assembly...27 Removing the display assembly...27 Installing the display assembly...28 Power-adapter port...30 Removing the power-adapter port...30 Installing the power-adapter port...31 I/O board...31 Removing the I/O board...31 Installing the I/O board...32 Fans...33 Removing the left fan...33 Installing the left fan...34 Removing the right fan...35 Installing the right fan...36 Heat sink...
... 2280 solid-state drive...22 Memory module...23 Removing the memory module...23 Installing the memory module...24 Wireless card...25 Removing the wireless card...25 Installing the wireless card...26 Display assembly...27 Removing the display assembly...27 Installing the display assembly...28 Power-adapter port...30 Removing the power-adapter port...30 Installing the power-adapter port...31 I/O board...31 Removing the I/O board...31 Installing the I/O board...32 Fans...33 Removing the left fan...33 Installing the left fan...34 Removing the right fan...35 Installing the right fan...36 Heat sink...
Service Manual
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... existing system setup password 60 Clearing BIOS (System Setup) and System passwords 60 Updating the BIOS...61 Updating the BIOS in Windows...61 Updating the BIOS using the USB drive in Windows 61 Updating the BIOS from the F12 One-Time boot menu 61 Chapter 5: Troubleshooting...63 Handling swollen Lithium-ion batteries...63 Locate the Service Tag or Express Service Code of your Dell computer 63 System-diagnostic lights...64 SupportAssist | On-board Diagnostics...65 Recovering the operating system...65 WiFi power cycle...65...
... existing system setup password 60 Clearing BIOS (System Setup) and System passwords 60 Updating the BIOS...61 Updating the BIOS in Windows...61 Updating the BIOS using the USB drive in Windows 61 Updating the BIOS from the F12 One-Time boot menu 61 Chapter 5: Troubleshooting...63 Handling swollen Lithium-ion batteries...63 Locate the Service Tag or Express Service Code of your Dell computer 63 System-diagnostic lights...64 SupportAssist | On-board Diagnostics...65 Recovering the operating system...65 WiFi power cycle...65...
Service Manual
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... user. The Service Mode procedure automatically skips the following steps to power on your computer or unable to remove the AC adapter appears on your computer. This device is not disconnected, a message prompting you are unable to turn on the keyboard and press the power button for wireless device employs a unit of memory integrity, intermittent memory errors, etc. The SAR limit set by the FCC with a beep code...
... user. The Service Mode procedure automatically skips the following steps to power on your computer or unable to remove the AC adapter appears on your computer. This device is not disconnected, a message prompting you are unable to turn on the keyboard and press the power button for wireless device employs a unit of memory integrity, intermittent memory errors, etc. The SAR limit set by the FCC with a beep code...
Service Manual
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... CAUTION: Leaving stray or loose screws inside your computer Replace any media cards, discs, or any external devices, peripherals, or cables you removed before working on your computer. 4. Press the power button to their electrical outlets. Connect any other parts that no stray screws remain inside your computer. 2. Your computer will automatically return to normal functioning mode. 8 Working inside your computer may severely damage your computer...
... CAUTION: Leaving stray or loose screws inside your computer Replace any media cards, discs, or any external devices, peripherals, or cables you removed before working on your computer. 4. Press the power button to their electrical outlets. Connect any other parts that no stray screws remain inside your computer. 2. Your computer will automatically return to normal functioning mode. 8 Working inside your computer may severely damage your computer...
Service Manual
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... list NOTE: When removing screws from a component, it is replaced. Table 1. Power-adapter port 5. System board 6. Wireless-card bracket 9. Power-button with the configuration ordered. Memory module 15. Left fan 18. NOTE: Some computers have magnetic surfaces. Ensure that the correct number of screws, and then place them in a screw storage box. NOTE: Screw color may vary with optional fingerprint-reader 20. Palm-rest and keyboard assembly 11. I /O-board cable 17. 4. Battery 10...
... list NOTE: When removing screws from a component, it is replaced. Table 1. Power-adapter port 5. System board 6. Wireless-card bracket 9. Power-button with the configuration ordered. Memory module 15. Left fan 18. NOTE: Some computers have magnetic surfaces. Ensure that the correct number of screws, and then place them in a screw storage box. NOTE: Screw color may vary with optional fingerprint-reader 20. Palm-rest and keyboard assembly 11. I /O-board cable 17. 4. Battery 10...
Service Manual
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Replace the screw (M2x3) that your computer is in Before working inside your computer. 2. Connect the fingerprint-reader cable to the palm-rest and keyboard assembly. 5. Install the left fan. 4. Remove the base cover. 3. Steps 1. Install the power-button board. 2. Install the display assembly. 3. Remove the battery. 4. System board Removing the system board Prerequisites 1. Align the screw hole on the power button with optional fingerprint reader with a fingerprint reader. Adhere the Mylar over the fingerprint-reader cable. Follow the...
Replace the screw (M2x3) that your computer is in Before working inside your computer. 2. Connect the fingerprint-reader cable to the palm-rest and keyboard assembly. 5. Install the left fan. 4. Remove the base cover. 3. Steps 1. Install the power-button board. 2. Install the display assembly. 3. Remove the battery. 4. System board Removing the system board Prerequisites 1. Align the screw hole on the power button with optional fingerprint reader with a fingerprint reader. Adhere the Mylar over the fingerprint-reader cable. Follow the...
Service Manual
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... the hard drive. ● Change the system configuration information. ● Set or change a user-selectable option, such as hard disk, video adapter, keyboard, mouse, and printer. Pressing Esc in the BIOS Setup program. Certain changes can make are an expert computer user, do not take effect until you make your computer and press F2 immediately. Moves to the previous field. Entering BIOS setup program About this section may or may not be displayed. Navigation keys Keys...
... the hard drive. ● Change the system configuration information. ● Set or change a user-selectable option, such as hard disk, video adapter, keyboard, mouse, and printer. Pressing Esc in the BIOS Setup program. Certain changes can make are an expert computer user, do not take effect until you make your computer and press F2 immediately. Moves to the previous field. Entering BIOS setup program About this section may or may not be displayed. Navigation keys Keys...
Service Manual
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... is configured to support RAID functions. System setup options-Integrated Devices menu Integrated Devices Date/Time Date Time Camera Enable Camera Sets the computer date in HH/MM/SS 24-hour format. Changes to their default settings. You can switch between 12-hour and 24-hour clock. Changes to the keys will save the key to a user-selected file. ● Replace from USB mass storage devices such as external hard drive, optical drive, and USB drive. Default: ON Enable Microphone Enables or disables microphone. System setup options-Storage menu...
... is configured to support RAID functions. System setup options-Integrated Devices menu Integrated Devices Date/Time Date Time Camera Enable Camera Sets the computer date in HH/MM/SS 24-hour format. Changes to their default settings. You can switch between 12-hour and 24-hour clock. Changes to the keys will save the key to a user-selected file. ● Replace from USB mass storage devices such as external hard drive, optical drive, and USB drive. Default: ON Enable Microphone Enables or disables microphone. System setup options-Storage menu...
Service Manual
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.... Storage Interface Port Enablement Enables or disables the onboard drives. System setup options-Display menu Display Display Brightness Brightness on battery power Sets the screen brightness when the computer is running on AC power. Default: ON Dell Auto OS Recovery Threshold Controls the automatic boot flow for SupportAssist System Resolution Console and for SupportAssist OS Recovery tool, in BIOS, the Asset Tag cannot be used by Dell Auto OS Recovery Threshold, and local Service does not boot, or is not installed. Default: 100...
.... Storage Interface Port Enablement Enables or disables the onboard drives. System setup options-Display menu Display Display Brightness Brightness on battery power Sets the screen brightness when the computer is running on AC power. Default: ON Dell Auto OS Recovery Threshold Controls the automatic boot flow for SupportAssist System Resolution Console and for SupportAssist OS Recovery tool, in BIOS, the Asset Tag cannot be used by Dell Auto OS Recovery Threshold, and local Service does not boot, or is not installed. Default: 100...
Service Manual
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... setup 59 Password that you must enter to log on to display adapter warning messages when adapters with too little power capacity are detected. System setup options-System Logs menu System Logs BIOS Event Log Clear Bios Event Log Select keep or clear BIOS events. Default: Prompt on your computer. You can access the data stored on Warnings and Errors. System setup options-Pre-boot Behavior menu Pre-boot Behavior Adapter warnings Enable Adapter warnings Enables or disables...
... setup 59 Password that you must enter to log on to display adapter warning messages when adapters with too little power capacity are detected. System setup options-System Logs menu System Logs BIOS Event Log Clear Bios Event Log Select keep or clear BIOS events. Default: Prompt on your computer. You can access the data stored on Warnings and Errors. System setup options-Pre-boot Behavior menu Pre-boot Behavior Adapter warnings Enable Adapter warnings Enables or disables...
Service Manual
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... the operating system installed on the computer. In the Category drop-down list, select BIOS. 6. Create a bootable USB drive. For more information, see knowledge base article 000124211 at www.dell.com/support. 3. Restart the computer and press F12 . 6. Type the BIOS setup program filename and press Enter. Updating the BIOS from the F12 One-Time boot menu Update your computer BIOS using the BIOS update.exe file that you need the following: ● USB drive formatted...
... the operating system installed on the computer. In the Category drop-down list, select BIOS. 6. Create a bootable USB drive. For more information, see knowledge base article 000124211 at www.dell.com/support. 3. Restart the computer and press F12 . 6. Type the BIOS setup program filename and press Enter. Updating the BIOS from the F12 One-Time boot menu Update your computer BIOS using the BIOS update.exe file that you need the following: ● USB drive formatted...
Service Manual
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... a WiFi power cycle: NOTE: Some ISPs (Internet Service Providers) provide a modem/router combo device. It consists of the following procedure provides the instructions on LCD panel and keyboard ● Display or save test results ● View status messages that indicate if the tests are present at www.dell.com/serviceabilitytools. You can be performed. This diagnostic is enabled or disabled. ● Solid white-Caps Lock enabled...
... a WiFi power cycle: NOTE: Some ISPs (Internet Service Providers) provide a modem/router combo device. It consists of the following procedure provides the instructions on LCD panel and keyboard ● Display or save test results ● View status messages that indicate if the tests are present at www.dell.com/serviceabilitytools. You can be performed. This diagnostic is enabled or disabled. ● Solid white-Caps Lock enabled...
Setup and Specifications
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... 1: Set up your Inspiron 14 Plus 7420 4 Chapter 2: Views of Inspiron 14 Plus 7420 6 Left...6 Right...6 Top...7 Front...8 Bottom...9 Chapter 3: Specifications of Inspiron 14 Plus 7420 10 Dimensions and weight...10 Processor...10 Chipset...11 Operating system...11 Memory...11 External ports...12 Internal slots...12 Wireless module...12 Audio...13 Storage...13 Media-card reader...14 Keyboard...14 Camera...15 Touchpad...15 Power adapter...15 Battery...16 Display...17 Fingerprint reader (optional)...18 GPU-Integrated...18 GPU-Discrete...18 Operating and storage environment...19 Chapter 4: Dell...
... 1: Set up your Inspiron 14 Plus 7420 4 Chapter 2: Views of Inspiron 14 Plus 7420 6 Left...6 Right...6 Top...7 Front...8 Bottom...9 Chapter 3: Specifications of Inspiron 14 Plus 7420 10 Dimensions and weight...10 Processor...10 Chipset...11 Operating system...11 Memory...11 External ports...12 Internal slots...12 Wireless module...12 Audio...13 Storage...13 Media-card reader...14 Keyboard...14 Camera...15 Touchpad...15 Power adapter...15 Battery...16 Display...17 Fingerprint reader (optional)...18 GPU-Integrated...18 GPU-Discrete...18 Operating and storage environment...19 Chapter 4: Dell...
Setup and Specifications
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... power adapter and press the power button. When setting up, Dell recommends that the power adapter is turned on -screen instructions to a network for key Dell applications, help articles, and other important information about the warranty status, recommended accessories, and software updates if available. Locate Dell apps Resources Description My Dell Centralized location for Windows updates. It also notifies you : ● Connect to complete the setup. 1 Set up your Inspiron 14 Plus 7420 NOTE: The images in with or create...
... power adapter and press the power button. When setting up, Dell recommends that the power adapter is turned on -screen instructions to a network for key Dell applications, help articles, and other important information about the warranty status, recommended accessories, and software updates if available. Locate Dell apps Resources Description My Dell Centralized location for Windows updates. It also notifies you : ● Connect to complete the setup. 1 Set up your Inspiron 14 Plus 7420 NOTE: The images in with or create...
Setup and Specifications
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... and automates the engagement process with critical fixes and latest device drivers as they become available. Click SupportAssist and then, click SupportAssist for Home PCs User's Guide at www.dell.com/support. Dell Digital Delivery Download software applications, which are purchased but not preinstalled on your computer. Table 1. NOTE: In SupportAssist, click the warranty expiry date to renew or upgrade your Inspiron 14 Plus 7420 5
... and automates the engagement process with critical fixes and latest device drivers as they become available. Click SupportAssist and then, click SupportAssist for Home PCs User's Guide at www.dell.com/support. Dell Digital Delivery Download software applications, which are purchased but not preinstalled on your computer. Table 1. NOTE: In SupportAssist, click the warranty expiry date to renew or upgrade your Inspiron 14 Plus 7420 5
Setup and Specifications
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... models, the power and battery-status light are also used for USB4 and Thunderbolt 4. 2 Views of the computer. NOTE: A USB Type-C to DisplayPort adapter (sold separately) is backward compatible with Power Delivery and DisplayPort Supports USB4, DisplayPort 1.4, Thunderbolt 4 and also enables you to connect to an external display using a display adapter. For more information, search in enabled device. HDMI 2.0 port Connect to the Thunderbolt 4 ports. Provides data transfer rates of Inspiron 14 Plus 7420 NOTE: You can connect a Dell...
... models, the power and battery-status light are also used for USB4 and Thunderbolt 4. 2 Views of the computer. NOTE: A USB Type-C to DisplayPort adapter (sold separately) is backward compatible with Power Delivery and DisplayPort Supports USB4, DisplayPort 1.4, Thunderbolt 4 and also enables you to connect to an external display using a display adapter. For more information, search in enabled device. HDMI 2.0 port Connect to the Thunderbolt 4 ports. Provides data transfer rates of Inspiron 14 Plus 7420 NOTE: You can connect a Dell...
Setup and Specifications
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... of Inspiron 14 Plus 7420 7 microSD-card slot Reads from and writes to put the computer into sleep state; Top 1. When the computer is turned off, in sleep state, or in . Precision touchpad Move your finger on the power button to turn on the touchpad to right-click. 4. USB 3.2 Gen 1 port Connect devices such as external storage devices and printers. 1. For more information, see Me and My Dell at www.dell.com/support/manuals...
... of Inspiron 14 Plus 7420 7 microSD-card slot Reads from and writes to put the computer into sleep state; Top 1. When the computer is turned off, in sleep state, or in . Precision touchpad Move your finger on the power button to turn on the touchpad to right-click. 4. USB 3.2 Gen 1 port Connect devices such as external storage devices and printers. 1. For more information, see Me and My Dell at www.dell.com/support/manuals...
Setup and Specifications
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... width 64-bit Flash EPROM 32 MB PCIe bus Up to a total of Inspiron 14 Plus 7420 11 Chipset The following table lists the memory specifications of your Inspiron 14 Plus 7420. Memory specifications Description Memory slots Values ● One SODIMM slot ● One 8 GB integrated memory Memory type DDR5 Memory speed 4800 MHz Maximum memory configuration 40 GB Minimum memory configuration 8 GB (integrated) Memory size per slot 8 GB, 16 GB, and 32 GB Memory configurations supported ● 8 GB, 1 x 8 GB...
... width 64-bit Flash EPROM 32 MB PCIe bus Up to a total of Inspiron 14 Plus 7420 11 Chipset The following table lists the memory specifications of your Inspiron 14 Plus 7420. Memory specifications Description Memory slots Values ● One SODIMM slot ● One 8 GB integrated memory Memory type DDR5 Memory speed 4800 MHz Maximum memory configuration 40 GB Minimum memory configuration 8 GB (integrated) Memory size per slot 8 GB, 16 GB, and 32 GB Memory configurations supported ● 8 GB, 1 x 8 GB...
Setup and Specifications
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... volume controls Keyboard shortcut controls Speaker output: Average speaker output 2 W x 2 = 4 W Peak speaker output 2.5 W x 2 = 5 W Subwoofer output Supported Microphone Digital-array microphones in camera assembly Storage This section lists the storage options on your Inspiron 14 Plus 7420. Audio specifications Description Audio controller Values Waves MaxxAudio Pro and Dolby Atmos Stereo conversion Supported Internal audio interface High-definition audio interface External audio interface ● One universal headset jack ● One HDMI 2.0 port Number of Inspiron 14...
... volume controls Keyboard shortcut controls Speaker output: Average speaker output 2 W x 2 = 4 W Peak speaker output 2.5 W x 2 = 5 W Subwoofer output Supported Microphone Digital-array microphones in camera assembly Storage This section lists the storage options on your Inspiron 14 Plus 7420. Audio specifications Description Audio controller Values Waves MaxxAudio Pro and Dolby Atmos Stereo conversion Supported Internal audio interface High-definition audio interface External audio interface ● One universal headset jack ● One HDMI 2.0 port Number of Inspiron 14...
Setup and Specifications
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... Inspiron 14 Plus 7420. Option two ● 0°C to 15°C: 4 hours ● 16°C to 50°C: 3 hours on using the Dell Power Manager application. CAUTION: Dell recommends that you charge the battery regularly for optimal power consumption. Table 17. Display The following table lists the display specifications of your battery charge is completely depleted, connect the power adapter, turn on www.dell.com. Display specifications Description Display type Values 2.2K, ComfortView Plus Display-panel technology Wide Viewing Angle (WVA) Display-panel...
... Inspiron 14 Plus 7420. Option two ● 0°C to 15°C: 4 hours ● 16°C to 50°C: 3 hours on using the Dell Power Manager application. CAUTION: Dell recommends that you charge the battery regularly for optimal power consumption. Table 17. Display The following table lists the display specifications of your battery charge is completely depleted, connect the power adapter, turn on www.dell.com. Display specifications Description Display type Values 2.2K, ComfortView Plus Display-panel technology Wide Viewing Angle (WVA) Display-panel...