Related Manuals for Dell Latitude 9440 2-in-1
Summary of Contents for Dell Latitude 9440 2-in-1
- Page 1 Latitude 9440 2-in-1 Service Manual Regulatory Model: P166G Regulatory Type: P166G001 March 2023 Rev. A00...
- Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2023 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies, Dell, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.
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Page 3: Table Of Contents
Contents Chapter 1: Working inside your computer..................5 Safety instructions................................5 Before working inside your computer........................5 Safety precautions................................ 6 Electrostatic discharge—ESD protection....................... 6 ESD field service kit ..............................7 Transporting sensitive components.......................... 8 After working inside your computer..........................8 BitLocker..................................8 Chapter 2: Removing and installing components................9 SIM card tray.................................. - Page 4 BIOS Reset..................................73 Chapter 5: Troubleshooting......................74 Handling swollen rechargeable Li-ion batteries......................74 Locate the Service Tag or Express Service Code of your Dell computer ..........74 Dell SupportAssist Pre-boot System Performance Check diagnostics..............75 Running the SupportAssist Pre-Boot System Performance Check..............75 Built-in self-test (BIST)..............................75 M-BIST...................................
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Page 5: Chapter 1: Working Inside Your Computer
You should only perform troubleshooting and repairs as authorized or directed by the Dell technical assistance team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. See the safety instructions that is shipped with the product or at www.dell.com/regulatory_compliance. -
Page 6: Safety Precautions
Ensure that your computer is shut down and the AC adapter is disconnected. a. Hold <B> key on the keyboard and press the power button for 3 seconds or until the Dell logo appears on the screen. b. Press any key to continue. -
Page 7: Esd Field Service Kit
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. -
Page 8: Transporting Sensitive Components
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. -
Page 9: Chapter 2: Removing And Installing Components
Removing and installing components NOTE: The images in this document may differ from your computer depending on the configuration you ordered. SIM card tray Removing the SIM card tray Prerequisites Follow the procedure in Before working inside your computer. NOTE: Ensure that your computer is in Service Mode. -
Page 10: Installing The Sim Card Tray
Steps 1. Insert the SIM card removal pin into the release hole to release the SIM card tray. 2. Push the pin to disengage the lock, and eject the SIM card tray. 3. Slide the SIM card tray out of the slot on the system. 4. - Page 11 About this task The following image provides a visual representation of the SIM card tray installation procedure. Steps 1. Insert the SIM card removal pin into the release hole to remove the SIM card tray. 2. Push the pin to disengage the lock, and eject the SIM card tray. 3.
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Page 12: Base Cover
NOTE: Ensure that your computer is in Service Mode. For more information see, step 6 in Before working inside your computer. Base cover Removing the base cover Prerequisites 1. Follow the procedure in Before working inside your computer. NOTE: Ensure that your computer is in Service Mode. For more information see, step 6 in Before working inside your computer. - Page 13 Steps 1. Loosen the six captive screws that secure the base cover to the system. 2. Using a plastic scribe, pry open the base cover starting from the recesses that are located in the U-shaped indents near the hinges at the top edge of the base cover. NOTE: Do not lift the base cover from the top side immediately after prying it from the recesses, as this will cause damage to the base cover.
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Page 14: Installing The Base Cover
4. Hold the left and right sides of the base cover, and remove the base cover from the system. 5. Using the pull tab disconnect the battery cable from the connector on the system board. Installing the base cover Prerequisites If you are replacing a component, remove the necessary component before the installation procedure. -
Page 15: Solid-State Drive
Steps 1. Connect the battery cable to the connector on the system board. 2. Align and place the base cover on the palm-rest assembly, and snap the base cover into place. 3. Tighten the six captive screws to secure the base cover to the system. Next steps 1. - Page 16 About this task The following images indicate the location of the solid-state drive and provide a visual representation of the removal procedure. Steps 1. Using a plastic scribe pry open the solid-state drive shielding cover from the recess at the right side of the solid-state drive shielding cover.
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Page 17: Installing The Solid-State Drive
Installing the solid-state drive 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 solid-state drive and provides a visual representation of the installation procedure. -
Page 18: Installing The Wwan Card
About this task The following images indicate the location of the WWAN card and provide a visual representation of the removal procedure. Steps 1. Using a plastic scribe pry open the WWAN card shielding cover from the right edge of the WWAN card shielding cover. NOTE: A thermal pad is included with the WWAN shielding cover and must always be adhered to the cover. - Page 19 For instructions on how to find your computer's IMEI (International Mobile Station Equipment Identity) number, see the knowledge base article 000143678 at www.dell.com/support. 5. Align and place the WWAN-card shielding cover, press to fit it firmly to cover the WWAN card. Next steps 1.
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Page 20: System Fan
System fan Removing the right fan Prerequisites 1. Follow the procedure in Before working inside your computer. NOTE: Ensure that your computer is in Service Mode. For more information see, step 6 in Before working inside your computer. 2. Remove the base cover. -
Page 21: Removing The Left Fan
Steps 1. Align and place the right fan onto the palm-rest assembly. 2. Replace the two (M1.6x3) screws to secure the right fan to the palm-rest assembly. 3. Connect the right fan cable to the connector on the system board. 4. -
Page 22: Installing The Left Fan
Steps 1. Peel off the mylar sticker from the left fan FPC connector. 2. Disconnect the left fan FPC cable from the connector on the system board. 3. Remove the two (M1.6x3) screws that secure the left fan to the palm-rest assembly. 4. -
Page 23: Display Assembly
Steps 1. Align and place the left fan onto the palm-rest assembly. 2. Replace the two (M1.6x3) screws to secure the left fan to the palm-rest assembly. 3. Connect the left fan cable to the connector on the system board. 4. - Page 24 Removing and installing components...
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Page 25: Installing The Display Assembly
Steps 1. Remove the two (M1.6x3) screws that secure the display cable and Type-C bracket in place. 2. Remove the display cable and Type-C bracket off the computer. 3. Disconnect the camera cable and display cable from the connectors on the system board. NOTE: The connector for the display cable utilizes a latch that locks it in place on the system board which technicians must flip open in order to disconnect the display cable from the system board. - Page 26 Removing and installing components...
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Page 27: Heat Sink
Steps 1. Align and place the palm-rest assembly under the hinges of the display assembly. 2. Replace the six (M2.5x4) screws to secure the display assembly to the system. 3. Connect the display and camera cable to the connectors on the system board. 4. -
Page 28: Installing The Heat Sink
Installing the heat sink 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 heat sink and provides a visual representation of the installation procedure. Steps 1. -
Page 29: Removing The Battery
● If the battery gets stuck inside your computer as a result of swelling, do not try to release it as puncturing, bending, or crushing a rechargeable Li-ion battery can be dangerous. In such an instance, contact Dell technical support for assistance. See www.dell.com/contactdell. - Page 30 Removing and installing components...
- Page 31 Figure 1. Steps 1. Peel off the two pieces of tape securing the gray WWAN antenna cable in place at the bottom side of CPU shielding cover and unroute the wireless antenna cables from the routing guides on the system board and the routing guides along the top side of the battery.
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Page 32: Installing The Battery
NOTE: The cables for the WLAN antennas are routed over the plastic bracket at the upper right corner and within the routing guides along the bottom right side of the battery. You must be careful when unrouting the antenna cables from their routing guides while they are still attached to the wireless card. - Page 33 Figure 2. Removing and installing components...
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Page 34: Speakers
Steps 1. Align and place the battery on the palm-rest assembly. 2. Replace the single (M1.6x3) screw and four (M2x4) screws to secure the battery to the palm-rest assembly. 3. Reconnect the battery cable to the connector on the system board. 4. -
Page 35: Installing The Left Speaker
Steps 1. Peel the tape securing the left speaker cable to the chassis. 2. Disconnect the left speaker cable from connector on the system board. 3. Remove the two (M1.6x1.8) screws that secure the left speaker in place. 4. Lift the left speaker off the chassis. Installing the left speaker Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. - Page 36 Steps 1. Align and place the left speaker into the slot on the chassis. 2. Replace the two (M1.6x1.8) screws to secure the left speaker to the system. 3. Connect the left speaker cable to connector on the system board. 4.
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Page 37: Removing The Right Speaker
Removing the right speaker Prerequisites 1. Follow the procedure in Before working inside your computer. NOTE: Ensure that your computer is in Service Mode. For more information see, step 6 in Before working inside your computer. 2. Remove the base cover. - Page 38 Steps 1. Align and place the right speaker into the slot on the chassis. 2. Replace the two (M1.6x1.8) screws to secure the right speaker to the system. 3. Adhere the tape to secure the right speaker to the chassis. 4.
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Page 39: Wireless Local Area Network (Wlan) Antenna Module
4. Follow the procedure in After working inside your computer. Wireless Local Area Network (WLAN) Antenna module Removing the WLAN antenna module Prerequisites 1. Follow the procedure in Before working inside your computer. NOTE: Ensure that your computer is in Service Mode. For more information see, step 6 in Before working inside your computer. -
Page 40: System Board
About this task The following image indicates the location of the WLAN antenna module and provides a visual representation of the installation procedure. Steps 1. Align and place the WLAN antenna module in the slot on the system. 2. Replace the two (M1.6x3) screws to secure the WLAN antenna module to the palm-rest assembly. 3. - Page 41 9. Remove the battery. About this task CAUTION: The heatsink must be first removed before removing the system board, as there are two (M1.6x2) screws underneath the heatsink that secure the system board to the chassis. 1. Right speaker cable connector 2.
- Page 42 Steps 1. Peel back the left and right mylar stickers on the system board. 2. Remove the two (M1.6x3) screws that secure the display cable/Type-C bracket in place. Removing and installing components...
- Page 43 3. Remove the display cable/Type-C bracket off the system board. 4. For systems shipped with WWAN, remove the (M1.6x2.3) screw that secures the WWAN Darwin cable bracket to the system board. 5. For systems shipped with WWAN, lift the WWAN Darwin cable bracket off the system board. 6.
- Page 44 There are seven screws in two sizes securing the system board in place. 11. Remove the system board off the chassis. CAUTION: Do not hold and bend the system board from its “necks” as it may damage the system board. 12.
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Page 45: Installing The System Board
NOTE: The following items MUST be transferred to the replacement system board. a. Display absorber (for models shipped with WWAN antennas) or display mylar (for models shipped without WWAN antennas) b. WWAN card thermal pad sticker (for models shipped with WWAN antennas) or VPU card thermal pad sticker (for models shipped with a VPU card) Installing the system board Prerequisites... - Page 46 6. Left fan cable connector 7. M.2 2230 solid-state drive connector 8. Left speaker cable connector 9. Display cable connector 10. Camera cable connector Removing and installing components...
- Page 47 Steps 1. Adhere the display absorber and WWAN thermal pad (for systems shipped with WWAN) on the system board. NOTE: All of the above mentioned absorbers/stickers on the system board are re-usable and must be immediately relocated to the replacement system board. NOTE: The following items MUST be transferred to the replacement system board.
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Page 48: Power Button With Fingerprint Reader Assembly
There are seven screws in two sizes securing the system board in place. 4. Align and place the USB Type-C bracket on the system board. 5. Replace the three (1.6x3) screws to secure the USB Type-C bracket to the system board. 6. - Page 49 1. Follow the procedure in Before working inside your computer. NOTE: Ensure that your computer is in Service Mode. For more information see, step 6 in Before working inside your computer. 2. Remove the SIM card tray if applicable. 3. Remove the base cover.
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Page 50: Installing The Power Button With Fingerprint Reader Assembly
Installing the power button with fingerprint reader assembly 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 provides a visual representation of the installation procedure. -
Page 51: Palm-Rest And Keyboard Assembly
11. Follow the procedure in After working inside your computer. Palm-rest and keyboard assembly Removing the palm-rest and keyboard assembly Prerequisites 1. Follow the procedure in Before working inside your computer. NOTE: Ensure that your computer is in Service Mode. For more information see, step 6 in Before working inside your computer. -
Page 52: Installing 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 images indicate the location of the palm-rest and keyboard assembly and provide a visual representation of the removal procedure. -
Page 53: Recommended Tools
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. -
Page 54: Major Components Of Latitude 9440 2-In-1
System board M1.6x2 M1.6x3 Major components of Latitude 9440 2-in-1 The following image shows the major components of Latitude 9440 2-in-1. 1. Base cover 2. Right speaker 3. WWAN card shielding cover 4. WWAN card Removing and installing components... - Page 55 16. Left speaker NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative for purchase options.
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Page 56: Chapter 3: Drivers And Downloads
Drivers and downloads When troubleshooting, downloading or installing drivers it is recommended that you read the Dell Knowledge Base article, Drivers and Downloads FAQ 000123347. Drivers and downloads... -
Page 57: Chapter 4: Bios Setup
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. -
Page 58: System Setup Options
NOTE: Depending on your computer and its installed devices, the items listed in this section may or may not appear. Table 3. System setup options—System information menu Overview Latitude 9440 2-in-1 BIOS Version Displays the BIOS version number. Service Tag Displays the Service Tag of the computer. - Page 59 Table 3. System setup options—System information menu (continued) Overview 64-Bit Technology Displays whether 64-bit technology is used. Memory Information Memory Installed Displays the total computer memory installed. Memory Available Displays the total computer memory available. Memory Speed Displays the memory speed. Memory Channel Mode Displays single or dual channel mode.
- Page 60 By default, the Video/Power only on Type-C Ports option is disabled. Type-C Dock Override Enables to use connected Type-C Dell Dock to provide data stream with external USB ports disabled. When Type-C Dock override is enabled, the Video/Audio/Lan submenu is activated.
- Page 61 Table 6. System setup options—Storage menu Storage SATA/NVMe Operation SATA/NVMe Operation Set the operating mode of the integrated storage device controller. By default, the RAID On option is enabled. Storage Interface Port Enablement By default, the M.2 PCIe SSD-0 option is enabled. SMART Reporting Enable SMART Reporting Enable or disable Self-Monitoring, Analysis, and Reporting Technology...
- Page 62 By default, the Optimized option is enabled. USB Wake Support Wake on Dell USB-C Dock When enabled, connecting a Dell USB-C Dock will wake the computer from standby. By default, the Wake on Dell USB-C Dock option is enabled. Block Sleep Enables to block entering sleep (S3) mode in the operating system.
- Page 63 Table 10. System setup options—Security menu (continued) Security TPM 2.0 Security On Enable or disable TPM 2.0 security options. By default, the TPM 2.0 Security On option is enabled. Attestation Enable Enables to control whether the Trusted Platform Module (TPM) Endorsement Hierarchy is available to the operating system.
- Page 64 Allow Non-Admin PSID Revert Enable Allow Non-Admin PSID Revert Controls access to the Physical Security ID (PSID) revert of NVMe hard-drives from the Dell Security Manager prompt. By default, the option is disabled. Table 12. System setup options—Update, Recovery menu...
- Page 65 By default, the option is enabled. Dell Auto OS Recovery Threshold Controls the automatic boot flow for SupportAssist System Resolution Console and for Dell OS Recovery Tool. By default, the threshold value is set to 2. Table 13. System setup options—System Management menu...
- Page 66 Table 14. System setup options—Keyboard menu (continued) Keyboard Keyboard Backlight Timeout on AC Set the timeout value for the keyboard backlight when an AC adapter is connected to the computer. By default, the 10 seconds option is enabled. Keyboard Backlight Timeout on Set the timeout value for the keyboard backlight when the is running only on Battery battery power.
- Page 67 Table 16. System setup options—Virtualization menu (continued) Virtualization By default, the option is enabled. Intel Trusted Execution Technology (TXT) Enable Intel Trusted Execution Specifies whether a measured Virtual Machine Monitor (MVMM) can utilize Technology (TXT) the additional hardware capabilities provided by Intel Trusted Execution Technology.
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Page 68: Updating The Bios
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. -
Page 69: Updating The Bios From The F12 One-Time Boot Menu
One-Time boot menu on the computer. Most of the Dell computers built after 2012 have this capability, and you can confirm by booting your computer to the F12 One-Time Boot Menu to see if BIOS FLASH UPDATE is listed as a boot option for your computer. If the option is listed, then the BIOS supports this BIOS update option. -
Page 70: System And Setup Password
System and setup password Table 19. 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. -
Page 71: Clearing Bios (System Setup) And System Passwords
Clearing BIOS (System Setup) and System passwords About this task 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. - Page 72 If Block Boot Until Cleared is set to OFF, select Continue to boot up normally or BIOSSetup to clear the alert. NOTE: If Continue is selected, the user will continue to see the alert each time the system is powered on until the alert is cleared.
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Page 73: Bios Reset
About this task Latitude 9440 2-in-1 has a CMOS-less design. As result, the systems main Battery will cover CMOS-functionality. If the main battery runs out of power or is removed from system, Restore Settings allows users to select one of the following options: ●... -
Page 74: Chapter 5: Troubleshooting
● Using a non-Dell or incompatible battery may increase the risk of fire or explosion. Replace the battery only with a compatible battery purchased from Dell that is designed to work with your Dell computer. Do not use a battery from other computers with your computer. -
Page 75: Dell Supportassist Pre-Boot System Performance Check Diagnostics
Check diagnostics About this task SupportAssist diagnostics (also known as system diagnostics) performs a complete check of your hardware. The Dell SupportAssist Pre-boot System Performance Check diagnostics is embedded with the BIOS and is launched by the BIOS internally. The embedded system diagnostics provides a set of options for particular devices or device groups allowing you to: ●... -
Page 76: Lcd Power Rail Test (L-Bist)
LCD Built-in Self Test (BIST) Dell laptops have a built-in diagnostic tool that helps you determine if the screen abnormality you are experiencing is an inherent problem with the LCD (screen) of the Dell laptop or with the video card (GPU) and PC settings. -
Page 77: System-Diagnostic Lights
CPU power cable connection issue NOTE: Blinking 3-3-3 LEDs on Lock LED (Caps-Lock or Nums-Lock), Power button LED (without Fingerprint reader), and Diagnostic LED indicates failure to provide input during LCD panel test on Dell SupportAssist Pre-boot System Performance Check diagnostics. Troubleshooting... -
Page 78: Recovering The Operating System
It enables you to diagnose hardware issues, repair your computer, back up your files, or restore your computer to its factory state. You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their primary operating system due to software or hardware failures. - Page 79 6. Install the battery. 7. Install the base cover. 8. Connect the power adapter to your computer. 9. Turn on your computer. NOTE: For more information about performing a hard reset, search in the Knowledge Base Resource at www.dell.com/ support. Troubleshooting...
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Page 80: Chapter 6: Getting Help And Contacting Dell
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 22. Self-help resources Self-help resources Resource location Information about Dell products and services www.dell.com My Dell app...