Table of Contents
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Table of Contents
Related Manuals for Dell Inspiron 7786
Summary of Contents for Dell Inspiron 7786
- Page 1 Inspiron 7786 Service Manual Regulatory Model: P36E Regulatory Type: P36E001...
- Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2018 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, 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 1 Before working inside your computer......................8 Before you begin ................................8 2 After working inside your computer....................... 9 3 Safety instructions............................10 Electrostatic discharge—ESD protection........................10 ESD field service kit ................................. 11 Components of an ESD field service kit........................11 ESD protection summary ............................11 Transporting sensitive components..........................12 Lifting equipment ...............................12... - Page 4 Procedure..................................26 Post-requisites..................................26 14 Removing the fan............................27 Prerequisites..................................27 Procedure..................................27 15 Replacing the fan............................28 Procedure..................................28 Post-requisites..................................28 16 Removing the heat sink..........................29 Prerequisites..................................29 Procedure..................................29 17 Replacing the heat sink..........................30 Procedure..................................30 Post-requisites..................................30 18 Removing the hard drive..........................31 Prerequisites..................................
- Page 5 25 Replacing the wireless card........................44 Procedure..................................44 Post-requisites..................................44 26 Removing the display assembly......................... 45 Prerequisites..................................45 Procedure..................................45 27 Replacing the display assembly........................46 Procedure..................................46 Post-requisites..................................46 28 Removing the power-adapter port......................47 Prerequisites..................................47 Procedure..................................47 29 Replacing the power-adapter port......................48 Procedure..................................48 Post-requisites..................................48 30 Removing the I/O board..........................
- Page 6 Procedure..................................57 37 Replacing the touchpad..........................58 Procedure..................................58 Post-requisites................................. 58 38 Removing the keyboard..........................59 Prerequisites..................................59 Procedure..................................59 39 Replacing the keyboard..........................61 Procedure ..................................61 Post-requisites..................................62 40 Removing the palm rest..........................63 Prerequisites..................................63 Procedure..................................63 41 Replacing the palm rest..........................65 Procedure..................................
- Page 7 Procedure..................................73 49 Replacing the display cable........................74 Procedure..................................74 Post-requisites.................................. 74 50 Removing the display back-cover and antenna assembly................75 Prerequisites..................................75 Procedure..................................75 51 Replacing the display back-cover and antenna assembly................76 Procedure..................................76 Post-requisites..................................76 52 Device drivers............................77 Intel Chipset Software Installation Utility........................77 Video drivers..................................
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Page 8: Before Working Inside Your Computer
Before working inside your computer NOTE: The images in this document may differ from your computer depending on the configuration you ordered. Before you begin Save and close all open files and exit all open applications. Shut down your computer. Click Start > Power >... -
Page 9: After Working Inside Your Computer
After working inside your computer CAUTION: Leaving stray or loose screws inside your computer may severely damage your computer. Replace all screws and ensure that no stray screws remain inside your computer. Connect any external devices, peripherals, or cables you removed before working on your computer. Replace any media cards, discs, or any other parts that you removed before working on your computer. -
Page 10: Safety Instructions
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 11: Esd Field Service Kit
It is recommended that all field service technicians 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 that technicians keep sensitive parts separate from all insulator parts while performing service and that they use anti-static bags for transporting sensitive components. -
Page 12: 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. Lifting equipment Adhere to the following guidelines when lifting heavy weight equipment: CAUTION: Do not lift greater than 50 pounds. -
Page 13: Recommended Tools
Recommended tools The procedures in this document may require the following tools: • Philips screwdriver #1 • Flat-head screwdriver • Plastic scribe Recommended tools... -
Page 14: Screw List
Screw list Table 1. Screw list Component Secured to Screw type Quantity Screw image Base cover Palm-rest assembly M2x5 Battery Palm-rest assembly M2x3 Wireless-card bracket System board M2x3 Hard-drive assembly Palm-rest assembly M2x3 Solid-state drive Palm-rest and keyboard M2x3 assembly Touchpad-bracket Palm-rest assembly M2x2... -
Page 15: Removing The Base Cover
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Remove the eight screws (M2x5) that secure the base cover to the palm-rest assembly. - Page 16 NOTE: The following step is applicable only if you want to further remove any other component from your computer. Disconnect the battery cable from the system board. Removing the base cover...
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Page 17: Replacing The Base Cover
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Connect the battery cable to the system board. Align the tabs on the base cover with the slots on the palm-rest assembly. - Page 18 Tighten the three captive screws that secure the base cover to the palm-rest assembly. Replace the eight screws (M2x5) that secure the base cover to the palm-rest assembly. Replacing the base cover...
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Page 19: Removing The Battery
Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover. - Page 20 Turn the computer over, open the display, then press and hold the power button for five seconds to ground the system board. Removing the battery...
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Page 21: Replacing The Battery
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Using the alignment posts, place the battery on the palm-rest assembly. -
Page 22: Post-Requisites
Post-requisites Replace the base cover. Replacing the battery... -
Page 23: Removing The Memory Modules
Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover. -
Page 24: Replacing The Memory Modules
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Lift the Mylar to access the memory-module slot. Align the notch on the memory module with the tab on the memory-module slot. -
Page 25: Removing The Coin-Cell Battery
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Removing the coin-cell battery resets the BIOS setup program’s settings to default. It is recommended that you note the BIOS setup program’s settings before removing the coin-cell battery. -
Page 26: Replacing The Coin-Cell Battery
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Adhere the coin-cell battery to the palm-rest assembly. Connect the coin-cell battery cable to the system board. -
Page 27: Removing The Fan
Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover. -
Page 28: Replacing The Fan
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Using the alignment posts, place the fan on the palm-rest assembly. -
Page 29: Removing The Heat Sink
After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. WARNING: The heat sink may become hot during normal operation. Allow sufficient time for the heat sink to cool before you touch it. -
Page 30: Replacing The Heat Sink
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Incorrect alignment of the heat sink can damage the system board and processor. -
Page 31: Removing The Hard Drive
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Hard drives are fragile. Exercise care when handling the hard drive. - Page 32 Remove the four screws (M3x3) that secure the hard-drive bracket to the hard drive. Lift the hard drive off the hard-drive bracket. Removing the hard drive...
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Page 33: Replacing The Hard Drive
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Hard drives are fragile. Exercise care when handling the hard drive. -
Page 34: Post-Requisites
Post-requisites Replace the battery. Replace the base cover. Replacing the hard drive... -
Page 35: Removing The Solid-State Drive/Intel Optane Memory Module
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites You need to disable the Intel Optane memory before removing Intel Optane memory module from your computer. For more... - Page 36 Removing the solid-state drive/Intel Optane memory module...
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Page 37: Replacing The Solid-State Drive/Intel Optane Memory Module
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Solid-state drives are fragile. Exercise care when handling the solid-state drive. -
Page 38: Post-Requisites
Post-requisites Replace the base cover. Enable the Intel Optane memory after you replace the Intel Optane memory module. For more information about enabling the Intel Optane memory, see Enabling Intel Optane memory. Procedure to move the screw mount This computer supports two solid-state drive form factors: •... - Page 39 Replacing the solid-state drive/Intel Optane memory module...
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Page 40: Removing The Speakers
Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover. -
Page 41: Replacing The Speakers
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Using the alignment posts on the palm-rest assembly, place the speakers on the palm-rest assembly. -
Page 42: Removing The Wireless Card
Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover. - Page 43 Removing the wireless card...
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Page 44: Replacing The Wireless Card
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure CAUTION: To avoid damage to the wireless card, do not place any cables under it. -
Page 45: Removing The Display Assembly
Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover. -
Page 46: Replacing The Display Assembly
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure CAUTION: Place the computer on a soft and clean surface to avoid scratching the display. -
Page 47: Removing The Power-Adapter Port
Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover. -
Page 48: Replacing The Power-Adapter Port
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Place the power-adapter port into the slot on the palm-rest assembly. -
Page 49: Removing The I/O Board
Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover. -
Page 50: Replacing The I/O Board
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Align the USB ports on the I/O board with the slots on the palm-rest assembly. -
Page 51: Removing The Power Button With Fingerprint Reader
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. NOTE: Applicable only for computers that are shipped with fingerprint reader. -
Page 52: Replacing The Power Button With Fingerprint Reader
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. NOTE: Applicable only for computers that are shipped with fingerprint reader. -
Page 53: Removing The System Board
After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. NOTE: Your computer’s Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup program after you replace the system board. - Page 54 Remove the two screws (M2x2) that secure the system board to the palm-rest assembly. Slide and lift the system board off the palm-rest assembly. Removing the system board...
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Page 55: Replacing The System Board
After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. NOTE: Your computer’s Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup program after you replace the system board. -
Page 56: Post-Requisites
Entering the Service Tag in the BIOS setup program Turn on or restart your computer. Press F2 when the Dell logo is displayed to enter the BIOS setup program. Navigate to the Main tab and enter the Service Tag in the Service Tag Input field. -
Page 57: Removing The Touchpad
Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover. -
Page 58: Replacing The Touchpad
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Align the screw holes on the touch pad with the screw holes on the palm-rest assembly. -
Page 59: Removing The Keyboard
Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover. - Page 60 Lift the keyboard bracket off the keyboard. Remove the five screws (M1.2x1.5) that secures the keyboard to the palm-rest assembly. Lift the keyboard off the palm-rest assembly. Removing the keyboard...
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Page 61: Replacing The Keyboard
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Align the screw holes on the keyboard with the screw holes on the palm-rest assembly. -
Page 62: Post-Requisites
Adhere the tape that secures the keyboard bracket to the keyboard. Post-requisites Replace the touchpad. Replace the system board. Replace the power button with fingerprint reader Replace the board. Replace the power-adapter port. Replace the display assembly. Replace the heat sink. -
Page 63: Removing The Palm Rest
Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover. - Page 64 Removing the palm rest...
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Page 65: Replacing The Palm Rest
Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Place the palm rest on a flat surface. Post-requisites Replace the keyboard. -
Page 66: Removing The Display Panel
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites NOTE: Piece parts replacement of the display panel using SR tapes and pressure films is only limited to RFR (Return For Repair –... - Page 67 After performing the above steps, we are left with the display panel. Removing the display panel...
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Page 68: Replacing The Display Panel
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Place the display panel on a flat surface. Replace the display cable. -
Page 69: Removing The Camera
Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover. -
Page 70: Replacing The Camera
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Connect the camera cable to the camera module. Adhere the tape that secures the camera cable to the camera. -
Page 71: Removing The Display Hinges
Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover. -
Page 72: Replacing The Display Hinges
After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Align the screw holes on the hinges and brackets with the screw holes on the display back-cover and antenna assembly. -
Page 73: Removing The Display Cable
Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover. -
Page 74: Replacing The Display Cable
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Adhere the display cable to the display panel. Connect the touch-screen cable and close the latch to secure the cable. -
Page 75: Removing The Display Back-Cover And Antenna Assembly
Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover. -
Page 76: Replacing The Display Back-Cover And Antenna Assembly
After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Place the display back-cover and antenna assembly on a flat surface. -
Page 77: Device Drivers
Device drivers Intel Chipset Software Installation Utility In the Device Manager, check if the chipset driver is installed. Install the Intel chipset updates from www.dell.com/support. Video drivers In the Device Manager, check if the video driver is installed. Install the video driver update from www.dell.com/support. -
Page 78: System Setup
Boot Sequence allows you to bypass the System Setup–defined boot device order and boot directly to a specific device (for example: optical drive or hard drive). During the Power-on Self Test (POST), when the Dell logo appears, you can: •... -
Page 79: Entering Bios Setup Program
Entering BIOS setup program Turn on (or restart) your computer. During POST, when the DELL logo is displayed, watch for the F2 prompt to appear, and then press F2 immediately. NOTE: The F2 prompt indicates that the keyboard is initialized. This prompt can appear very quickly, so you must watch for it, and then press F2. - Page 80 General-System Information Maximum Clock Speed Displays the maximum processor clock speed. Processor L2 Cache Displays the processor L2 Cache size. Processor L3 Cache Displays the processor L3 Cache size. HT Capable Displays whether the processor is HyperThreading (HT) capable. 64-Bit Technology Displays whether 64-bit technology is used.
- Page 81 System Configuration Enable External USB Port Enable or disable booting from USB mass storage devices connected to external USB port. Audio Enable or disable the integrated audio controller. Keyboard Illumination Enables you to choose the operating mode of the keyboard illumination feature. Keyboard Backlight Timeout on AC When the backlight is enabled, this feature defines the timeout value for the keyboard backlight when an AC adapter is plugged into the computer.
- Page 82 Table 7. System setup options—Secure Boot menu Secure Boot Secure Boot Enable Enable or disable the secure boot feature. Secure Boot Mode Modifies the behavior of Secure Boot to allow evaluation or enforcement of UEFI driver signatures. Expert Key Management Expert Key Management Enable or disable Expert Key Management.
- Page 83 Intel Software Guard Extensions POST Behavior Adapter Warnings Enable adapter warnings. Default: Enabled. Numlock Enable Enables the NumLock funcltion when computer boots. Fn Lock Options Enable or disable the Fn lock mode. Fastboot Enable to set the speed of the boot process. Default: Thorough.
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Page 84: Clearing Cmos Settings
Clearing BIOS (System Setup) and System passwords To clear the system or BIOS passwords, contact Dell technical support as described at www.dell.com/contactdell. NOTE: For information on how to reset Windows or application passwords, refer to the documentation accompanying Windows or your application. -
Page 85: Troubleshooting
Copy the BIOS setup program file to the bootable USB drive. Connect the bootable USB drive to the computer that needs the BIOS update. Restart the computer and press F12 when the Dell logo is displayed on the screen. Boot to the USB drive from the One Time Boot Menu. -
Page 86: Running The Epsa Diagnostics
3.0. Running the ePSA diagnostics Turn on your computer. As the computer boots, press the F12 key as the Dell logo appears. On the boot menu screen, select the Diagnostics option. Click the arrow at the bottom left corner. Diagnostics front page is displayed. -
Page 87: Enabling Intel Optane Memory
Table 14. Diagnostics Light pattern Problem description CPU failure System board: BIOS and ROM failure No memory or RAM detected Memory or RAM failure Invalid memory installed System board or chipset error LCD failure CMOS battery failure PCI or video card or chip failure Recovery image not found Recovery image found but invalid Power rail failure... -
Page 88: Wifi Power Cycle
On the Intel Optane memory tab, click Disable to disable the Intel Optane memory. Click Yes if you accept the warning. The disabling progress is displayed. Click Reboot to complete disabling your Intel Optane memory and restart your computer. WiFi power cycle If your computer is unable to access the internet due to WiFi connectivity issues a WiFi power cycle procedure may be performed.