hit counter script
Dell P44E Service Manual
  1. Manuals
  2. Brands
  3. Dell Manuals
  4. Laptop
  5. P44E
  6. Service manual
Dell P44E Service Manual

Dell P44E Service Manual

Hide thumbs Also See for P44E:
Table of Contents

Advertisement

Quick Links

Download this manual
Precision 7750
Service Manual
Regulatory Model: P44E
Regulatory Type: P44E001
December 2022
Rev. A01

Advertisement

Table of Contents
loading

Related Manuals for Dell P44E

Summary of Contents for Dell P44E

  • Page 1 Precision 7750 Service Manual Regulatory Model: P44E Regulatory Type: P44E001 December 2022 Rev. A01...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2020 - 2021 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.

  • Page 3: Table Of Contents

    Contents Chapter 1: Working on your computer................... 6 Safety instructions................................6 Before working inside your computer........................6 Safety precautions.................................7 Electrostatic discharge—ESD protection........................7 ESD field service kit ..............................8 After working inside your computer..........................9 Chapter 2: Major components of your system................10 Chapter 3: Technology and components..................13 USB features..................................13 USB Type-C..................................14...
  • Page 4 Installing the SIM card..............................39 WLAN card..................................40 Removing the WLAN card............................40 Installing the WLAN card............................41 WWAN card..................................42 Removing the WWAN card............................42 Installing the WWAN card............................43 Keyboard lattice.................................44 Removing the keyboard lattice..........................44 Installing the keyboard lattice...........................45 Keyboard..................................... 46 Removing the keyboard.............................
  • Page 5 Display back cover................................106 Replacing the display cable............................. 106 Chapter 5: Troubleshooting....................... 108 Dell SupportAssist Pre-boot System Performance Check diagnostics.............. 108 Running the SupportAssist Pre-Boot System Performance Check.............. 108 System board built-in self-test (M-BIST)......................... 109 Display panel power rail built-in self-test (L-BIST)....................109 Display panel built-in self-test (LCD-BIST)........................110...

  • Page 6: Chapter 1: Working On Your Computer

    Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

  • Page 7: Safety Precautions

    ESD protection is an increasing concern. 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.

  • Page 8: Esd Field Service Kit

    Always place parts in your hand, on the ESD mat, in the system, or inside an anti-static bag. ● 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. Working on your computer...

  • Page 9: After Working Inside Your Computer

    It is recommended to use the traditional wired ESD grounding wrist strap and protective anti-static mat at all times when servicing Dell products. In addition, it is critical to keep sensitive parts separate from all insulator parts while performing service and that they use anti-static bags for transporting sensitive components.

  • Page 10: Chapter 2: Major Components Of Your System

    Major components of your system...
  • Page 11 Major components of your system Major components of your system...
  • Page 12 22. M.2 SSD 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.

  • Page 13: Chapter 3: Technology And Components

    Technology and components This chapter details the technology and components available in the system. Topics: • USB features • USB Type-C • HDMI 2.0 • NVIDIA Quadro T1000 • NVIDIA Quadro RTX3000 • NVIDIA Quadro RTX4000 • NVIDIA Quadro RTX5000 USB features Universal Serial Bus, or USB, was introduced in 1996.

  • Page 14: Usb Type-C

    Speed Currently, there are five speed modes that are defined by the latest USB 3.0/USB 3.1 Gen 1 specification. Based on USB data transfer, they are categorized as Low Speed, Full Speed, High Speed (from version 2.0 of the specification), SuperSpeed (from version 3.0), and SuperSpeed+ (from version 3.1).
  • Page 15 USB Power Delivery The USB PD specification is also closely intertwined with USB Type-C. Currently, smartphones, tablets, and other mobile devices often use a USB connection to charge. A USB 2.0 connection provides up to 2.5 watts of power — that'll charge your phone, but that's about it.

  • Page 16: Hdmi 2.0

    Key Features of Thunderbolt 3 over USB Type-C 1. Thunderbolt, USB, DisplayPort, and power-on USB Type-C on a single cable (features vary between different products). 2. USB Type-C connector and cables which are compact and reversible. 3. Supports Thunderbolt Networking (*varies between different products). 4.

  • Page 17: Nvidia Quadro T1000

    ● HDMI combines video and multichannel audio into a single cable, eliminating the cost, complexity, and confusion of multiple cables that are currently used in A/V systems ● HDMI supports communication between the video source (such as a DVD player) and the DTV, enabling new functionality NVIDIA Quadro T1000 Table 2.

  • Page 18: Nvidia Quadro Rtx4000

    Table 3. NVIDIA Quadro RTX3000 (continued) Feature Values ● Max Digital : Dual DisplayPort 1.4 - 7680 x 4320 (8k) @ 60 Hz (mDP/type-c to DP) Numbers of Display Support Up to 4 displays NVIDIA Quadro RTX4000 Table 4. NVIDIA Quadro RTX4000 Feature Values Graphics memory...
  • Page 19 Table 5. NVIDIA Quadro RTX5000 (continued) Feature Values Operating Systems Graphics/ Video API Support DirectX 12.0, OpenGL 4.6, DisplayPort 1.4, DirectX 12.1 Supported Resolutions and Max Refresh Rates (Hz) ● Max Digital : Single DisplayPort 1.4 - 7680 x 4320 (8k) @ 30 Hz (mDP/Type-C to DP) ●...

  • Page 20: Chapter 4: Disassembly And Reassembly

    Disassembly and reassembly NOTE: The images in this document may differ from your computer depending on the configuration you ordered. Topics: • SD card • SSD door • Secondary M.2 solid-state drive • Base cover • Battery • Solid State Drive •...

  • Page 21: Sd Card

    SD card Removing SD card Prerequisites 1. Follow the procedure in before working inside your computer. About this task The figure indicates the location of the SD card and provides a visual representation of the removal procedure. Steps 1. Press the SD card to release it from the computer. 2.

  • Page 22: Ssd Door

    Next steps 1. Follow the procedure in after working inside your computer. SSD door Removing SSD door Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the card. About this task The figure indicates the location of the SSD door reader and provides a visual representation of the removal procedure. Steps 1.

  • Page 23: Secondary M.2 Solid-State Drive

    Steps 1. Place the SSD door into its slot on the base cover. 2. Push the SSD door towards right side to lock the SSD door. Next steps 1. Install the card. 2. Follow the procedure in after working inside your computer.
  • Page 24 For computers without SSD door configuration Disassembly and reassembly...
  • Page 25 Steps 1. For computers with SSD door configuration: a. Use a plastic scribe to pry open the SSD door from its recess point. NOTE: The SDD door is attached to the base cover from one side and cannot be detached. b.

  • Page 26: Installing The Secondary M.2 Ssd Module

    Installing the secondary M.2 SSD module Prerequisites NOTE: For computers shipped with M.2 2280 or 2230 SSD installed in slot 6. If you are replacing a component, remove the existing component before performing the installation procedure. About this task The figure indicates the location of the secondary M.2 SSD and provides a visual representation of the installation procedure. For computers with SSD door configuration For computers without SSD door configuration Disassembly and reassembly...
  • Page 27 Steps 1. For M.2 2280 SSD: a. Place the M.2 SSD onto its slot on SSD carrier. 2. For M.2 2230 SSD: a. Place the M.2 SSD into the SSD holder. b. Replace the (M2x2) screw to secure the M.2 SSD to the holder. c.

  • Page 28: Base Cover

    Base cover Removing the base cover Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the card. About this task The figure indicates the location of the base cover and provides a visual representation of the removal procedure Disassembly and reassembly...
  • Page 29 Steps 1. Loosen the eight captive screws that secure the base cover to the computer. 2. Using a plastic scribe, pry open the base cover starting from bottom edge of the cover. NOTE: For models shipped without SmartCard reader, pry open the base cover from the smart card reader slot. Use your fingers to pry open the base cover as the use of plastic scribe or any other sharp objects may damage the base cover.

  • Page 30: Installing The Base Cover

    3. Lift the base cover starting from the bottom edge and remove it from the computer. 4. Disconnect the battery cable from the connector on the system board. Installing the base cover Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The figure indicates the location of the base cover and provides a visual representation of the installation procedure.
  • Page 31 Disassembly and reassembly...

  • Page 32: Battery

    Steps 1. Connect the battery cable to the connector on the system board. 2. Slide the base cover into its slot until it clicks into place. 3. Tighten the eight captive screws to secure the base cover to the computer. Next steps 1.

  • Page 33: 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 lithium-ion battery can be dangerous. In such an instance, contact Dell technical support for assistance. See www.dell.com/contactdell.

  • Page 34: Solid State Drive

    About this task The figure indicates the location of the battery and provides a visual representation of the installation procedure. Steps 1. Connect the battery cable to the connector in the battery. 2. Place the battery onto its slot in the computer. 3.
  • Page 35 M.2 2230 SSD Steps 1. Remove the (M2x3) screw that secures the SSD thermal plate to the M.2 SSD module. 2. Carefully tilt at an angle and then slide to remove the SSD thermal plate from the slots on the inner frame. 3.

  • Page 36: Installing The Primary M.2 Ssd Module

    Installing the primary M.2 SSD module Prerequisites NOTE: For computers shipped with M.2 2280 or 2230 SSD installed in slot 3, slot 4, and/or slot 5. If you are replacing a component, remove the existing component before performing the installation procedure. About this task The figure indicates the location of the primary M.2 SSD and provides a visual representation of the installation procedure.

  • Page 37: Secondary Memory Module

    a. Place the M.2 SSD onto its slot on the computer. b. Replace the (M2x3) screw to secure the M.2 SSD to the computer. 2. For M.2 2230 SSD: a. Place the M.2 SSD into the SSD holder. b. Replace the (M2x2) screw to secure the M.2 SSD to the holder. c.

  • Page 38: Installing The Secondary Memory Module

    2. Remove the memory module from the memory-module slot. Installing the secondary memory module Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The figure indicates the location of the secondary and provides a visual representation of the installation procedure. Steps 1.

  • Page 39: Installing The Sim Card

    About this task The figure indicates the location of the SIM card and provides a visual representation of the removal procedure. Steps 1. Gently slide the SIM card cover towards the left side of the system to unlock the SIM card cover. CAUTION: The SIM card cover is very fragile and can be easily damaged if it is not properly unlocked before opening.

  • Page 40: Wlan Card

    Steps 1. Slide the SIM card into the SIM card slot. 2. Snap the SIM card cover down. 3. Slide the SIM card cover towards the right of the system to lock the cover. Next steps 1. Install the base cover.

  • Page 41: Installing The Wlan Card

    Steps 1. Loosen the captive screw that secures the WLAN card bracket to the system board. 2. Remove the WLAN card bracket away from the WLAN card. 3. Disconnect the antenna cables from the WLAN card. 4. Slide at an angle and remove the WLAN card from the connector on the system board. Installing the WLAN card Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 42: Wwan Card

    Steps 1. Insert the WLAN card to the connector on the system board. 2. Connect the antenna cables to the WLAN card. 3. Align and place the WLAN card bracket above the WLAN card to secure the antenna cables. 4. Tighten the captive screw to secure the WLAN card bracket to the system board. Next steps 1.

  • Page 43: Installing The Wwan Card

    About this task The figure indicates the location of the WWAN card and provides a visual representation of the removal procedure. Steps 1. Loosen the (M2x3) screw that secures the WWAN card bracket to the system board. 2. Lift the WWAN card bracket from the WWAN card. 3.

  • Page 44: Keyboard Lattice

    Steps 1. Connect the antenna cables to the connectors on the WWAN card. The following table provides the antenna-cable color scheme for the WWAN card of your computer. Table 6. Antenna-cable color scheme Antenna Cable Color Pin Definition White / Grey ANT0 Blue ANT1...

  • Page 45: Installing The Keyboard Lattice

    About this task The figure indicates the location of the keyboard lattice and provides a visual representation of the removal procedure. Steps 1. Using a plastic scribe, pry the top edge of the keyboard lattice starting from the recess points and working your way around the sides and bottom edge.

  • Page 46: Keyboard

    Steps 1. Align the keyboard lattice to its position on the keyboard. 2. Press the edges on the keyboard lattice until it clicks into place. Next steps 1. Install the base cover. 2. Install the card. 3. Follow the procedure in after working inside your computer.

  • Page 47: Installing The Keyboard

    Steps 1. Lift the latch and disconnect the keyboard cable and the keyboard backlight cable from the connectors on the touchpad module. 2. Turn-over and open the system at 90° angle. 3. Remove the six (M2x2.5) screws that secure the keyboard to the palmrest. 4.
  • Page 48 Steps 1. Align the keyboard to its slot on the palmrest 2. Route the keyboard cable and the keyboard backlight cable through the bottom of the palmrest. 3. Replace the six (M2x2.5) screws to secure the keyboard to the palmrest. 4.

  • Page 49: Primary Memory Module

    Primary memory module Removing the primary memory module Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the card. 3. Remove the base cover. 4. Remove the battery. 5. Remove the keyboard lattice. 6. Remove the keyboard. About this task The figure indicates the location of the primary memory module and provides a visual representation of the removal procedure.

  • Page 50: Installing The Primary Memory Module

    3. Pry the securing clips from both side of the memory module until the memory module pops up. 4. Remove the memory module from the memory-module slot. NOTE: Repeat the above steps if there are other memory installed. Installing the primary memory module Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 51: Heat Sink

    3. Carefully align the two clips on the memory shield with the slots on the computer chassis and insert the clips under the chassis. 4. Place the memory shield and slide it towards the left side of the computer to cover the memory module. 5.

  • Page 52: Installing The Heat Sink Assembly

    NOTE: Loosen the captive screws in the order stamped onto the heat-sink assembly next to the screws [1 > 2 > 3 > 4 > 5 > 6 > 7 > 8]. 4. Lift the heat-sink assembly to remove it from the computer. Installing the heat sink assembly Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 53: Power-Adapter Port

    Power-adapter port Removing the power-adapter port Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the card. 3. Remove the base cover. 4. Remove the battery. 5. Remove the heat-sink assembly. About this task The figure indicates the location of the power-adapter port and provides a visual representation of the removal procedure. Steps 1.

  • Page 54: Power Button Board

    Steps 1. Align and place the power-adapter cable on the computer. 2. Place the power-adapter port into its slot on the plamrest. 3. Replace the power-adapter cable bracket on the power-adapter port. 4. Replace the (M2x3) screw to secure the power-adapter cable bracket to the computer. 5.

  • Page 55: Installing The Power Button Board

    3. Remove the two (M2x3) screws that secure the power button board to the computer. 4. Remove the power button board with the power button board cable from the computer. 5. Disconnect the power button board cable from the power button board. Installing the power button board Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 56: Installing The Power Button Assembly With Fingerprint Reader

    Steps 1. Remove the (M2.5x2.5) screw that secures the power button assembly with fingerprint reader cable bracket to the power button board. 2. Remove the power button assembly with fingerprint reader cable bracket from the power button board. 3. Disconnect the power button assembly with fingerprint reader cable from the power button board. 4.

  • Page 57: Inner Frame

    Steps 1. Connect the power button board cable to the power button board. 2. Align and place the power button board with power button cable into its slot on the computer. 3. Replace the two (M2x3) screws to secure the power button board. 4.

  • Page 58: Installing The Inner Frame

    About this task The figure indicates the location of the inner frame and provides a visual representation of the removal procedure. Steps 1. Unroute the WLAN and WWAN antenna cables from the routing guide. 2. Disconnect the keyboard cable and the keyboard backlight cable from the connector on the touchpad module. 3.

  • Page 59: Smart-Card Reader

    Steps 1. Carefully route the keyboard and keyboard backlight cable through the inner frame and place the inner frame on the computer chassis. 2. Replace the six (M2x5) and the nine (M2x3) screws to secure the inner frame in place. 3.

  • Page 60: Installing The Smart-Card Reader

    About this task The figure indicates the location of the smart-card reader and provides a visual representation of the removal procedure. Steps 1. Disconnect the touchpad buttons cable from the touchpad. 2. Disconnect the smart-card reader cable from the connector on the USH daughter board. 3.

  • Page 61: Touchpad Button

    Steps 1. Align and place the smart-card reader into its slot on the computer. 2. Replace the two (M2x2.5) screws to secure the smart-card reader in place. 3. Adhere the smart-card reader cable to the touchpad. 4. Connect the smart-card reader cable to the connector on the USH daughter board. 5.

  • Page 62: Installing The Touchpad Buttons

    About this task The figure indicates the location of the touchpad buttons and provides a visual representation of the removal procedure. Steps 1. For models shipped with smart card reader, disconnect the smart card reader cable from the USH daughter board and peel the smart card reader cable from the touchpad.

  • Page 63: Sd Card Reader

    Steps 1. Place the touchpad buttons into its slot in the palmrest. 2. Replace the two (M2x2.5) screws to secure the touchpad buttons to the palmrest 3. Connect the touchpad buttons cable to the connector in the touchpad. 4. For models shipped with smart card reader, connect the smart card reader cable to the USH daughter board and adhere the smart card reader cable on the touchpad.

  • Page 64: Installing Sd Card Reader

    About this task The figure indicates the location of the SD card reader and provides a visual representation of the removal procedure. Steps 1. Disconnect the SD card reader cable from the connector on the system board. 2. Turn the computer and disconnect the LED board FFC from the SD card reader on the bottom side of the computer 3.

  • Page 65: Power Button

    Steps 1. Align the SD card reader with the FPC into its slot on the palmrest. 2. Place the SD card reader with the FPC on the palmrest and route the SD card reader FPC through the opening in the palmrest.

  • Page 66: Installing The Power Button

    About this task The figure indicates the location of the power button and provides a visual representation of the removal procedure. Steps 1. Remove the two (M2x3) screws that secure the power button in its slot on the computer. 2. Remove the power button from the computer. Installing the power button Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 67: Power Button Assembly With Fingerprint Reader

    Steps 1. Place the power button into its slot on the computer. 2. Replace the two (M2x3) screws to secure the power button in place. Next steps 1. Install the power button board. 2. Install the heat-sink assembly. 3. Install the battery. 4.

  • Page 68: Installing The Power Button Assembly With Fingerprint Reader

    Steps 1. Remove the two (M2x3) screws that secure the power button assembly with fingerprint reader in its slot on the computer. 2. Remove the power button assembly with fingerprint reader from the computer. Installing the power button assembly with fingerprint reader Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 69: Gpu Power Cable

    Steps 1. Place the power button assembly with fingerprint reader into its slot on the computer. 2. Replace the two (M2x3) screws to secure the power button assembly with fingerprint reader in place. Next steps 1. Install the power button board assembly with fingerprint reader.

  • Page 70: Installing The Gpu Power Cable

    2. Slightly slide the GPU power cable connector outwards to disconnect the GPU power cable from the GPU card. 3. Repeat the above steps to disconnect the GPU power cable from the system board. 4. Peel the GPU power cable from the computer. Installing the GPU power cable Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 71: System Board

    System board Removing the system board Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the card. 3. Remove the door. 4. Remove the secondary M.2 SSD. 5. Remove the base cover. 6. Remove the battery. 7.
  • Page 72 Steps 1. Carefully pry the GPU power cable connector outside the end of the connector head to unlock the GPU power cable connector from the system board on top side of the system. 2. Slightly slide the GPU power cable connector outwards to disconnect the GPU power cable from the connector on the system board.

  • Page 73: Installing The System Board

    NOTE: For UMA models, remove the two (M2x3) screws that secure the single beam connector in place on the bottom of the system. 10. Remove the beam connectors from the computer. 11. Remove the (M2x5) screw that secures the display cable bracket in place. 12.
  • Page 74 Disassembly and reassembly...
  • Page 75 Steps 1. Adhere the coin-cell battery to the palmrest and then place the system board on its slot on the palmrest. 2. Replace the four (M2x5) screws to secure the system board to the palmrest. 3. Connect the display cable, touch screen cable (for models shipped with a touch screen) or IR camera cable (for models shipped with an IR camera), power adapter cable, touchpad cable, USH daughter board FFC (for models shipped with a USH daughter board), and power button board cable to the connectors on the system board.

  • Page 76: Gpu Card

    3. Install the primary memory. 4. Install the keyboard. 5. Install the keyboard lattice. 6. Install the WLAN card. 7. Install the WWAN card. 8. Install the secondary memory. 9. Install the card. 10. Install the primary M.2 SSD. 11. Install the inner frame.

  • Page 77: Installing The Gpu Card

    Installing the GPU card Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The figure indicates the location of the GPU card and provides a visual representation of the installation procedure. Images to be uploaded in the next review cycle Steps 1.

  • Page 78: Installing The Speaker

    14. Remove the primary memory. 15. Remove the heat-sink assembly. 16. Remove the inner frame. 17. Remove the GPU power cable. 18. Remove the card. 19. Remove the system board. About this task The figure indicates the location of the speaker and provides a visual representation of the removal procedure. Images to be uploaded in the next review cycle.
  • Page 79 Steps 1. Align and place the speaker module into its slot on the top edge of the palmrest. 2. Adhere the three piece adhesive tape to secure the speaker cable in place on the palmrest. Next steps 1. Install the system board.

  • Page 80: Middle Cap

    Middle cap Removing the middle cap Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the card. 3. Remove the door. 4. Remove the secondary M.2 SSD. 5. Remove the base cover. 6. Remove the battery. 7.

  • Page 81: Installing The Middle Cap

    2. Remove the middle cap from the computer. Installing the middle cap Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The figure indicates the location of the middle cap and provides a visual representation of the installation procedure. Steps 1.

  • Page 82: Display Assembly

    15. Install the base cover. 16. Install the secondary M.2 SSD. 17. Install the door. 18. Install the card. 19. 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.
  • Page 83 Disassembly and reassembly...

  • Page 84: Installing The Display Assembly

    Steps 1. Open the display assembly to a 140-degree angle and place the computer at the edge of a flat table so that the display assembly can extend below the table. 2. Remove the (M2x5) screw that secures the display bracket to the palmrest. 3.
  • Page 85 Disassembly and reassembly...
  • Page 86 Steps NOTE: Before installing the display assembly, ensure that the display hinges are opened to a 140-degree angle against the display assembly, to fit the display assembly to the palmrest. Align the screw holes on the hinges on the display assembly to the screw holes on the palmrest. 2.

  • Page 87: Palm Rest

    12. Install the secondary M.2 SSD. 13. Install the door. 14. Install the card. 15. Follow the procedure in after working inside your computer. Palm rest Removing the palmrest Prerequisites 1. Follow the procedure in before working inside your computer. 2.

  • Page 88: Installing The Palmrest

    Installing the palmrest Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The figure indicates the palmrest and before performing the pre-installation parts procedures for any palmrest installation procedure. Disassembly and reassembly...

  • Page 89: Display Bezel

    Next steps 1. Install the display assembly. 2. Install the middle cap. 3. Install the speaker. 4. Install the system board. 5. Install the card. 6. Install the GPU power cable. 7. Install the inner frame. 8. Install the heat-sink assembly.

  • Page 90: Installing The Display Bezel (Non-Touch)

    20. Remove the speaker. 21. Remove the middle cap. 22. Remove the display assembly. About this task The figure indicates the location of the display bezel and provides a visual representation of the removal procedure. Images to be uploaded in the next review cycle. Steps 1.
  • Page 91 Steps 1. Place the display bezel on the display assembly. 2. Press the edges of the display bezel until it clicks onto the display assembly. Next steps 1. Install the display assembly. 2. Install the middle cap. 3. Install the speaker. 4.

  • Page 92: Display Panel

    20. Install the door. 21. Install the card. 22. Follow the procedure in after working inside your computer. Display panel Removing the display panel (non-touch) Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the card. 3.
  • Page 93 Steps 1. Remove the two (M2.5x2.5) screws and the two (M2x2.5) screws that secures the display panel to the display assembly. 2. Lift the display panel and turn the display panel over to access the display cable 3. Peel the conductive tape covering the display cable. 4.

  • Page 94: Installing The Display Panel (Non-Touch)

    Installing the display panel (non-touch) Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The figure indicates the display panel and provides a visual representation of the installation procedure. Steps 1.

  • Page 95: Display Hinges

    5. Replace the two (M2.5X2.5) and two (M2x2.5) screws to secure the display panel to the display assembly. Next steps 1. Install the display bezel. 2. Install the display assembly. 3. Install the middle cap. 4. Install the speaker. 5. Install the display assembly.

  • Page 96: Installing The Display Hinge (Non-Touch)

    22. Remove the display bezel. 23. Remove the display panel. About this task The figure indicates the location of the display hinge and provides a visual representation of the removal procedure. Images to be uploaded in the next review cycle. Steps 1.
  • Page 97 Steps 1. Place the display hinge in its slot on the display assembly. 2. Replace the eight (M2.5x2.5) screws to secure the display hinge to the display assembly. Next steps 1. Install the display panel. 2. Install the display bezel. 3.

  • Page 98: Camera

    Camera Removing the camera (non-touch) Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the card. 3. Remove the door. 4. Remove the secondary M.2 SSD. 5. Remove the base cover. 6. Remove the battery. 7. Remove the primary M.2 SSD.

  • Page 99: Installing The Camera

    Steps 1. Peel the adhesive tape that covers the camera module. 2. Disconnect the display cable from the camera module. 3. Gently pry the camera shutter cap from the top edge of the camera shutter and remove it from the display back cover. 4.

  • Page 100: P-Sensor Board

    13. Install the WLAN card. 14. Install the WWAN card. 15. Install the secondary memory. 16. Install the card. 17. Install the primary M.2 SSD. 18. Install the battery. 19. Install the base cover. 20. Install the secondary M.2 SSD. 21.

  • Page 101: Installing The P-Sensor Board

    Steps 1. Gently pry the P-sensor board from its slot on the display back cover. 2. Flip over the P-sensor board. 3. Disconnect the display cable from the P-sensor board. 4. Remove the P-sensor board. Installing the P-sensor board Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 102 Steps 1. Connect the display cable to the P-sensor board. 2. Flip the P-sensor board and place it gently in its slot on the display back cover. Next steps 1. Install the display panel. 2. Install the display bezel. 3. Install the speaker. 4.

  • Page 103: Display Cable

    Display cable Removing the display cable Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the card. 3. Remove the door. 4. Remove the secondary M.2 SSD. 5. Remove the base cover. 6. Remove the battery. 7.

  • Page 104: Installing The Display Cable

    Steps 1. Peel the adhesive tape covering the camera module. 2. Disconnect the display cable from the camera module. 3. Peel the display cable from the display cover and unroute the cable from the routing channels 4. Remove the display cable from the display back cover. Installing the display cable Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 105 Steps 1. Route and adhere the display cable on the display back cover. 2. Connect the display cable to the connector on the camera module. 3. Adhere the adhesive tape to cover the camera module. Next steps 1. Install the P-sensor board.

  • Page 106: Display Back Cover

    19. Install the battery. 20. Install the base cover. 21. Install the secondary M.2 SSD. 22. Install the door. 23. Install the card. 24. Follow the procedure in after working inside your computer. Display back cover Replacing the display cable Prerequisites 1.
  • Page 107 For installing the components, place the display back cover on a flat surface. 1. Install the display cable. 2. Install the camera. 3. Install the display hinges. 4. Install the P-sensor board. 5. Install the display panel. 6. Install the display bezel.

  • Page 108: Chapter 5: Troubleshooting

    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 109: System Board Built-In Self-Test (M-Bist)

    System board built-in self-test (M-BIST) About this task Steps 1. Press and hold both the M key and the power button to initiate M-BIST. 2. The battery-status light illuminates in amber when there is a system board failure. 3. Replace the system board to fix the issue. NOTE: The battery status LED does not illuminate if the system board is functioning properly.

  • Page 110: Display Panel Built-In Self-Test (Lcd-Bist)

    Display panel built-in self-test (LCD-BIST) About this task Steps 1. Press and hold the D key, and then press the power button. 2. Release both the D key and the power button when the computer begins POST. 3. The display panel begins to display a solid color, or cycling through different colors. NOTE: The sequence of colors may vary depending on the different display panel vendors.
  • Page 111 Table 7. LED codes Diagnostic light codes Problem description Recommended Solution TPM Detection Failure Replace System Board Unrecoverable SPI Flash Failure Replace System Board 1, 5 EC unable to program i-Fuse Replace System Board 1, 6 Generic catch-all for ungraceful EC code Disconnect all power source (AC, battery, coin cell) flow errors and drain flea power by pressing &...

  • Page 112: Wifi Power Cycle

    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. The following procedure provides the instructions on how to conduct a WiFi power cycle: NOTE: Some ISPs (Internet Service Providers) provide a modem/router combo device.

  • Page 113: Chapter 6: Getting Help

    About this task Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services may not be available in your area. To contact Dell for sales, technical support, or customer service issues: Steps 1.

This manual is also suitable for:

Precision 7750

Table of Contents