Table of Contents
- Dell Latitude 9410 Service Manual
- Working on your computer
- Technology and components
- Major components of your system
- Removing and installing components
- Troubleshooting
- Getting help and contacting Dell
DELL 9410 2in1 User Manual
Displayed below is the user manual for 9410 2in1 by DELL which is a product in the Notebooks category. This manual has pages.
Related Manuals
Dell Latitude 9410
Service Manual
1
Regulatory Model: P110G
Regulatory Type: P110G001
October 2020
Rev. A01
Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better use of your product.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid
the problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
© 2020 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.
Chapter 1: Working on your computer........................................................................................... 5
Safety instructions.............................................................................................................................................................. 5
Turning off your computer — Windows 10...................................................................................................................5
Before working inside your computer.............................................................................................................................6
After working inside your computer................................................................................................................................6
Chapter 2: Technology and components........................................................................................ 7
USB features.........................................................................................................................................................................7
USB Type-C.......................................................................................................................................................................... 8
HDMI 2.0................................................................................................................................................................................9
Corning Gorilla Glass...........................................................................................................................................................9
Benefits.......................................................................................................................................................................... 10
Chapter 3: Major components of your system ............................................................................. 13
Chapter 4: Removing and installing components.......................................................................... 15
Recommended tools..........................................................................................................................................................15
Screw List............................................................................................................................................................................ 15
SD memory card.................................................................................................................................................................16
Removing the SD memory card................................................................................................................................ 16
Installing the SD memory card.................................................................................................................................. 17
SIM card tray...................................................................................................................................................................... 18
Removing the SIM card tray......................................................................................................................................18
Installing the SIM card tray........................................................................................................................................19
Base cover.......................................................................................................................................................................... 20
Removing the base cover..........................................................................................................................................20
Installing the base cover............................................................................................................................................ 23
Battery cable...................................................................................................................................................................... 26
Disconnecting the battery cable..............................................................................................................................26
Connecting the battery cable................................................................................................................................... 27
Coin cell............................................................................................................................................................................... 28
Removing the coin cell battery................................................................................................................................ 28
Installing the coin-cell battery.................................................................................................................................. 28
Solid state drive.................................................................................................................................................................29
Removing the solid state drive.................................................................................................................................29
Installing the solid state drive...................................................................................................................................32
WLAN card..........................................................................................................................................................................34
Removing the WLAN card.........................................................................................................................................34
Installing the WLAN card........................................................................................................................................... 34
WWAN card........................................................................................................................................................................ 35
Removing the WWAN card....................................................................................................................................... 35
Installing the WWAN card..........................................................................................................................................37
Fan........................................................................................................................................................................................ 39
Removing the fan........................................................................................................................................................ 39
Contents
Contents 3
Installing the fan.......................................................................................................................................................... 43
Speakers.............................................................................................................................................................................. 47
Removing the speakers.............................................................................................................................................. 47
Installing the speakers................................................................................................................................................ 48
Heatsink...............................................................................................................................................................................50
Removing the heatsink...............................................................................................................................................50
Installing the heatsink.................................................................................................................................................54
Display assembly................................................................................................................................................................58
Removing the display assembly............................................................................................................................... 58
Installing the display assembly.................................................................................................................................. 61
Battery................................................................................................................................................................................. 63
Lithium-ion battery precautions...............................................................................................................................63
Removing the battery.................................................................................................................................................64
Installing the battery...................................................................................................................................................66
System board..................................................................................................................................................................... 68
Removing the system board..................................................................................................................................... 68
Installing the system board........................................................................................................................................73
Keyboard..............................................................................................................................................................................78
Removing the keyboard............................................................................................................................................. 78
Installing the keyboard............................................................................................................................................... 83
Palmrest assembly.............................................................................................................................................................87
Chapter 5: Troubleshooting.........................................................................................................90
SupportAssist Diagnostics.............................................................................................................................................. 90
System-diagnostic lights................................................................................................................................................. 92
LED Indicators and Characteristics...............................................................................................................................93
Battery Charge and Status LED ............................................................................................................................. 93
M-BIST.................................................................................................................................................................................93
LCD Built-in Self Test (BIST)......................................................................................................................................... 94
Flashing BIOS (USB key).................................................................................................................................................94
Flashing the BIOS..............................................................................................................................................................94
Backup media and recovery options.............................................................................................................................95
WiFi power cycle............................................................................................................................................................... 95
Flea power release............................................................................................................................................................ 95
Chapter 6: Getting help and contacting Dell................................................................................ 96
4Contents
Working on your computer
Topics:
•Safety instructions
•Turning off your computer — Windows 10
•Before working inside your computer
•After working inside your computer
Safety instructions
Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unless
otherwise noted, each procedure included in this document assumes that the following conditions exist:
●You have read the safety information that shipped with your computer.
●A component can be replaced or, if purchased separately, installed by performing the removal procedure in reverse order.
NOTE: Disconnect all power sources before opening the computer cover or panels. After you finish working inside the
computer, replace all covers, panels, and screws before connecting to the power source.
WARNING: Before working inside your computer, read the safety information that shipped with your computer.
For additional safety best practices information, see the Regulatory Compliance Homepage
CAUTION: Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
telephone service and support team. 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.
CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically
touching an unpainted metal surface at the same time as touching a connector on the back of the computer.
CAUTION: Handle components and cards with care. Do not touch the components or contacts on a card. Hold a
card by its edges or by its metal mounting bracket. Hold a component such as a processor by its edges, not by
its pins.
CAUTION: When you disconnect a cable, pull on its connector or on its pull-tab, not on the cable itself. Some
cables have connectors with locking tabs; if you are disconnecting this type of cable, press in on the locking
tabs before you disconnect the cable. As you pull connectors apart, keep them evenly aligned to avoid bending
any connector pins. Also, before you connect a cable, ensure that both connectors are correctly oriented and
aligned.
NOTE: The color of your computer and certain components may appear differently than shown in this document.
Turning off your computer — Windows 10
CAUTION: To avoid losing data, save and close all open files and exit all open programs before you turn off your
computer or remove the side cover.
1. Click or tap .
2. Click or tap and then click or tap Shut down.
1
Working on your computer 5
NOTE: Ensure that the computer and all attached devices are turned off. If your computer and attached devices did not
automatically turn off when you shut down your operating system, press and hold the power button for about 6 seconds
to turn them off.
Before working inside your computer
1. Save and close all open files and exit all open applications.
2. Shut down your computer. Click Start > Power > Shut down.
NOTE: If you are using a different operating system, see the documentation of your operating system for shut-down
instructions.
3. Disconnect your computer and all attached devices from their electrical outlets.
4. Disconnect all attached network devices and peripherals, such as keyboard, mouse, and monitor from your computer.
5. Remove any media card and optical disc from your computer, if applicable.
6. After the computer is unplugged, press and hold the power button for 5 seconds to ground the system board.
CAUTION: Place the computer on a flat, soft, and clean surface to avoid scratches on the display.
7. Place the computer face down.
After working inside your computer
NOTE: Leaving stray or loose screws inside your computer may severely damage your computer.
1. Replace all screws and ensure that no stray screws remain inside your computer.
2. Connect any external devices, peripherals, or cables you removed before working on your computer.
3. Replace any media cards, discs, or any other parts that you removed before working on your computer.
4. Connect your computer and all attached devices to their electrical outlets.
5. Turn on your computer.
6Working on your computer
Technology and components
This chapter details the technology and components available in the system.
Topics:
•USB features
•USB Type-C
•HDMI 2.0
•Corning Gorilla Glass
USB features
Universal Serial Bus, or USB, was introduced in 1996. It dramatically simplified the connection between host system units and
peripheral devices like mouses, keyboards, external drivers, and printers.
Table 1. USB evolution
Type Data Transfer Rate Category
USB 2.0 480 Mbps High Speed
USB 3.2 Gen 1 5 Gbps SuperSpeed USB 5 Gbps
USB 3.2 Gen 2 10 Gbps SuperSpeed USB 10 Gbps
USB 3.2
For years, the USB 2.0 has been firmly entrenched as the de facto interface standard in the personal computer world with about
6 billion devices sold, and yet the need for more speed grows by ever faster computing hardware and ever greater bandwidth
demands. The USB 3.0/USB 3.1 Gen 1 finally has the answer to the consumers' demands with a theoretically 10 times faster
than its predecessor. In a nutshell, USB 3.2 features are as follows:
●Higher transfer rates (up to 20 Gbps).
●Increased multilane operation of 10 Gbps each.
●Increased maximum bus power and increased device current draw to better accommodate power-hungry devices.
●New power management features.
●Full-duplex data transfers and support for new transfer types.
●Backward compatibility with USB 3.1/3.0 and USB 2.0.
●New connectors and cable.
Speed
●The USB 3.2 provides three transfer rates:
○USB 3.2 Gen 1 (5 Gbps)
○USB 3.2 Gen 2 (10 Gbps)
○USB 3.2 Gen 2x2 (20 Gbps)
●The marketing names below indicates the performance signaling that a product delivers in the product packaging, and any
other marketing materials:
○SuperSpeed USB 5Gbps—product signals at 5 Gbps
○SuperSpeed USB 10Gbps—product signals at 10 Gbps
○SuperSpeed USB 20Gbps—product signals at 20 Gbps
2
Technology and components 7
NOTE:
●USB 3.2 protocol specification defines only the performance capabilities that may be implemented in a product.
●USB 3.2 is not USB Power Delivery or USB Battery Charging.
USB Type-C
USB Type-C is a new physical connector. The connector itself can support various exciting new USB standards.
Alternate Mode
USB Type-C is a new connector standard that is very small. It is about a third the size of an old USB Type-A plug. This is a
single connector standard that every device should be able to use. USB Type-C ports can support a variety of different
protocols using “alternate modes,” which allows you to have adapters that can output HDMI, VGA, DisplayPort, or other types
of connections from that single USB port
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. A laptop might require up to 60 watts, for example. The USB Power Delivery specification ups this
power delivery to 100 watts. It's bi-directional, so a device can either send or receive power. And this power can be transferred
at the same time the device is transmitting data across the connection.
This could spell the end of all those proprietary laptop charging cables, with everything charging via a standard USB connection.
You could charge your laptop from one of those portable battery packs you charge your smartphones and other portable devices
from today. You could plug your laptop into an external display connected to a power cable, and that external display would
charge your laptop as you used it as an external display — all via the one little USB Type-C connection. To use this, the device
and the cable have to support USB Power Delivery. Just having a USB Type-C connection doesn't necessarily mean they do.
Thunderbolt 3 over USB Type-C
Thunderbolt 3 brings Thunderbolt to USB Type-C at speeds up to 40 Gbps, creating one compact port that does it all -
delivering the fastest, most versatile connection to any dock, display or data device like an external hard drive. Thunderbolt 3
uses a USB Type-C connector/port to connect to supported peripherals.
1. Thunderbolt 3 uses USB Type-C connector and cables - It is compact and reversible
2. Thunderbolt 3 supports speed up to 40 Gbps
3. DisplayPort 1.4 – compatible with existing DisplayPort monitors, devices and cables
4. USB Power Delivery - Up to 130W on supported computers
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. Supports up to 4K displays
5. Up to 40 Gbps
NOTE: Data transfer speed may vary between different devices.
8 Technology and components
Thunderbolt Icons
Figure 1. Thunderbolt Iconography Variations
HDMI 2.0
This topic explains the High-Definition Multimedia Interface (HDMI) 2.0 and its features along with the advantages.
HDMI is an industry-supported, uncompressed, all-digital audio/video interface. HDMI provides an interface between any
compatible digital audio/video source, such as a DVD player, or A/V receiver and a compatible digital audio and/or video
monitor, such as a digital TV (DTV). The intended applications for HDMI TVs, and DVD players. The primary advantage is cable
reduction and content protection provisions. HDMI supports standard, enhanced, or high-definition video, plus multichannel
digital audio on a single cable.
HDMI 2.0 features
●HDMI Ethernet Channel - Adds high-speed networking to an HDMI link, enabling users to take full advantage of their IP-
enabled devices without a separate Ethernet cable
●Audio Return Channel - Allows an HDMI-connected TV with a integrated tuner to send audio data "upstream" to a
surround audio system, eliminating the need for a separate audio cable
●3D - Defines input/output protocols for major 3D video formats, paving the way for true 3D gaming and 3D home theater
applications
●Content Type - Real-time signaling of content types between display and source devices, enabling a TV to optimize
illustration settings based on content type
●Additional Color Spaces - Adds support for additional color models that are used in digital photography and computer
graphics
●4K Support - Enables video resolutions far beyond 1080p, supporting next-generation displays that rival the Digital Cinema
systems that are used in many commercial movie theaters
●HDMI Micro Connector - A new, smaller connector for phones and other portable devices, supporting video resolutions up
to 1080p
●Automotive Connection System - New cables and connectors for automotive video systems, which are designed to meet
the unique demands of the motoring environment while delivering true HD quality
Advantages of HDMI
●Quality HDMI transfers uncompressed digital audio and video for the highest, crispest image quality.
●Low -cost HDMI provides the quality and functionality of a digital interface while also supporting uncompressed video
formats in a simple, cost-effective manner
●Audio HDMI supports multiple audio formats from standard stereo to multichannel surround sound
●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
Corning Gorilla Glass
Corning Gorilla Glass 5: Corning’s latest composition was formulated to address breakage the #1 consumer complaint, according
to Corning’s research. The new glass is just as thin and light as previous versions, but has been formulated to deliver
dramatically improved native damage resistance allowing improved in-field performance. Corning Gorilla Glass 5 has been tested
for performance when subjected to sharp contact damage, such as asphalt and other real-world surfaces.
Technology and components 9
Benefits
●Enhanced retained strength after use.
●High resistance to scratch and sharp contact damage.
●Improved drop performance.
●Superior surface quality.
Applications
●Ideal protective cover for electronic displays in:
○Smartphones
○Laptop and tablet computer screens
○Wearable devices
●Touchscreen devices
●Optical components
●High strength glass articles
Dimensions
Thickness: 0.4 mm
Viscosity
Table 2. Viscosity
Parameters Vectors
Softening Point (107.6 poises) 884˚C
Annealing Point (1013.2 poises) 623˚C
Strain Point (1014.7 poises) 571˚C
Properties
Table 3. Properties
Density 2.43 g/cm
Youngs Modulus 76.7 GPa
Poissons Ratio 0.21
Shear Modulus 31.7 GPa
Vickers Hardness (200 g load)
●Un-strengthened
●Strengthened
489 kgf/mm2
596 kgf/mm2
596 kgf/mm2
Fracture Toughness 0.69 MPa m0.5
Coefficient of Expansion (0 ˚C - 300 ˚C) 78.8 x 10-7 /°C
Chemical Strengthening
Capability of >850MPa CS, at 50 µm Depth Of Layer(DOL)
10 Technology and components
Specifications subject to change
Optical
Table 4. Optical
Refractive Index (590 nm)
Core glass** 1.50
Compression layer 1.51
Photo-elastic constant 30.3 nm/cm/MPa
** Core index is used for FSM-based measurements since it is unaffected by ion-exchange conditions.
Chemical Durability
Durability is measured via weight loss per surface area after immersion in the solvents shown below. Values are highly
dependent upon actual testing conditions. Data reported is for Corning Gorilla Glass 5.
Table 5. Chemical Durability
Reagent Time Temperature (ºC) Weight Loss (mg/cm2)
HCl - 5% 24 hrs 95 5.9
NH4F:HF - 10% 20 min 20 1.0
HF - 10% 20 min 20 25.2
NaOH - 5% 6 hrs 95 2.7
Electrical
Table 6. Electrical
Frequency (MHz) Dielectric Constant Loss Tangent
54 7.08 0.009
163 7.01 0.010
272 7.01 0.011
272 7.00 0.010
490 7.99 0.010
599 7.97 0.011
912 7.01 0.012
1499 6.99 0.012
1977 6.97 0.014
2466 6.96 0.014
2986 6.96 0.014
Terminated coaxial line similar to that outlined in NIST Technical Notes 1520 and 1355-R
Putting Corning Gorilla Glass 5 to the test.
●Greater damage resistance (upto 1.8X) with deep abrasion.
Technology and components 11
●Faster chemical strengthening with high Compressive Stress and deeper depth of compression
○Shallower check depth with higher abrasions levels
●Enables thickness reduction
12 Technology and components
Major components of your system
1. Base cover
2. Heatsink shield
3
Major components of your system 13
3. Touchscreen FPC cable
4. Heatsink
5. Fan
6. System board
7. Battery
8. Speakers
9. Palmrest assembly
10. Coin cell
11. WLAN card
12. WWAN card
13. WWAN shield
14. Solid state drive
15. SSD shield
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.
14 Major components of your system
Removing and installing components
NOTE: The images in this document may differ from your computer depending on the configuration you ordered.
Topics:
•Recommended tools
•Screw List
•SD memory card
•SIM card tray
•Base cover
•Battery cable
•Coin cell
•Solid state drive
•WLAN card
•WWAN card
•Fan
•Speakers
•Heatsink
•Display assembly
•Battery
•System board
•Keyboard
•Palmrest assembly
Recommended tools
The procedures in this document require the following tools:
●Phillips #0 screwdriver
●Phillips #1 screwdriver
●Plastic scribe-Recommended for field technician.
Screw List
The following table shows the screw list and the images for Dell Latitude 9410, for different components and locations.
Table 7. Screw Size List
Component Screw type Quantity Image
Base cover Captive screws
NOTE: Screws are part of
the base cover
10
Solid State Drive M2x2 1
WLAN card M2x2 1
4
Removing and installing components 15
Table 7. Screw Size List (continued)
Component Screw type Quantity Image
WWAN card M2x2 1
Fan M2x2 1
Speakers M1.6x1.4 3
Heatsink M1.6x2.5 4
Display assembly M2.5x3.5 6
Battery M1.6x4.5 1
M2x3 4
System board M2x2 2
M2x4 2
M2x3 5
Keyboard M1.6x1.5 1
2
40
SD memory card
Removing the SD memory card
1. Press the SD memory card to eject it from the SD memory card slot [1].
2. Remove the SD memory card from the computer [2].
16 Removing and installing components
Installing the SD memory card
Insert the SD memory card into its slot [1] until it clicks into place [2].
Removing and installing components 17
SIM card tray
Removing the SIM card tray
NOTE: This procedure applies for models that are shipped with WWAN card only.
1. Insert a paperclip or a SIM card removal tool into the pinhole on the SIM card tray [1].
2. Push the pin to disengage the lock and eject the SIM card tray [2].
3. Pull the SIM card tray out of the computer [3].
18 Removing and installing components
Installing the SIM card tray
Install the SIM card tray into its slot on the computer [1] and push to lock it in place [2].
Removing and installing components 19
2. Pry the base cover along the edges from the top side [2] to separate the base cover from the computer [2].
CAUTION: Do not pull on the base cover from the top side immediately after prying it open from the recesses
as it can damage the base cover.
Removing and installing components 21
3. Pry along the left, right and bottom edges of the base.
4. Slide the base cover outwards before removing it off the computer and then lift the base cover off the computer.
22 Removing and installing components
5. Using the pull tab, disconnect the battery cable from the system board.
6. Turn your computer over and press the power button for 15 seconds to drain the flea power.
Installing the base cover
1. Connect the battery cable to the system board.
2. Slide in base cover and place it on the computer.
Removing and installing components 23
3. Press along the edges of the base cover until it click into place.
24 Removing and installing components
4. Tighten the 10 captive screws to secure the base cover to the computer.
Removing and installing components 25
1. Install the SD memory card.
2. Follow the procedure in after working inside your computer.
Battery cable
Disconnecting the battery cable
1. Follow the procedure in before working inside your computer.
2. Remove the SD memory card.
3. Remove the base cover.
Disconnect the battery cable from the connector on the system board.
26 Removing and installing components
4. Follow the procedure in after working inside your computer.
Coin cell
Removing the coin cell battery
1. Follow the procedure in before working inside your computer.
2. Remove the SD memory card.
3. Remove the base cover.
4. Disconnect the battery cable.
1. Disconnect the coin-cell battery cable from the connector on the system board [1].
2. Peel and lift the coin-cell battery off the computer [2].
Installing the coin-cell battery
1. Affix the coin-cell battery to the system [1].
2. Connect the coin-cell battery cable to the connector on the system board [2].
28 Removing and installing components
1. Connect the battery cable
2. Install the base cover.
3. Install the SD memory card.
4. Follow the procedure in after working inside your computer.
Solid state drive
Removing the solid state drive
1. Follow the procedure in before working inside your computer.
2. Remove the SD memory card.
3. Remove the base cover.
4. Disconnect the battery cable.
1. Peel off the metal foil [1] and the black tape [2] that partially covers the solid state drive (SSD) cover.
Removing and installing components 29
2. Remove the single (M2x2) screw [1] that secures the SSD shield to the system board.
NOTE: If the model is shipped with full-length SSD, then remove the two (M2x2) screws that secures the SSD shield to
the system board.
3. Lift to remove the SSD shield from the system board [2].
30 Removing and installing components
4. Slide and remove the SSD module from the connector on the system board.
Removing and installing components 31
Installing the solid state drive
1. Align and slide the solid state drive (SSD) module into the connector on the system board.
2. Place the SSD shield on the SSD module [1] and replace the single (M2x2) screw [2] to secure it to the system board.
NOTE: If the model is shipped with full-length SSD, then replace the two (M2x2) screws to secure the SSD shield to
the system board.
32 Removing and installing components
3. Affix the black tape [1] and the metal foil [2] to secure the SSD shield in place.
Removing and installing components 33
1. Connect the battery cable
2. Install the base cover.
3. Install the SD memory card.
4. Follow the procedure in after working inside your computer.
WLAN card
Removing the WLAN card
1. Follow the procedure in before working inside your computer.
2. Remove the SD memory card.
3. Remove the base cover.
4. Disconnect the battery cable.
1. Partially peel off the Mylar sheet that covers the WLAN card [1].
2. Remove the single (M2x2) screw [2] that secures the WLAN card bracket to the WLAN card.
3. Remove the WLAN card bracket from the WLAN card.
4. Disconnect the wireless antennae cables [4] from the connectors on the WLAN card.
5. Slide and remove the WLAN card [5] from the connector on the system board.
Installing the WLAN card
1. Slide the WLAN card [1] at an angle into the WLAN card connector on the system board.
2. Connect the WLAN antenna card cables [2] to the connector on the WLAN card.
34 Removing and installing components
3. Align the screw hole on the WLAN card bracket with the screw hole on the WLAN card [3].
4. Replace the single (M2x2) [4] screw to secure the WLAN card to the system board.
5. Stick the Mylar sheet on the system board to cover the WLAN card [5].
1. Connect the battery cable
2. Install the base cover.
3. Install the SD memory card.
4. Follow the procedure in after working inside your computer.
WWAN card
Removing the WWAN card
1. Follow the procedure in before working inside your computer.
2. Remove the SD memory card.
3. Remove the base cover.
4. Disconnect the battery cable.
1. Remove the metal shield from the WWAN card.
Removing and installing components 35
2. Remove the single (M2x2) screw [1] that secures the WWAN bracket to the WWAN card.
3. Remove the WWAN bracket [2] from the WWAN card.
4. Disconnect the wireless antennae cables [3] from the connectors on the WWAN card.
5. Slide and remove the WWAN card [4] from the connector on the system board.
36 Removing and installing components
Installing the WWAN card
1. Slide the WWAN card [1] at an angle into the WWAN card connector on the system board.
2. Connect the WWAN antenna cables [2] to the connector on the WWAN card.
3. Align the screw hole on the WWAN card bracket with the screw hole on the WWAN card [3].
4. Replace the single (M2x2) screw [4] to secure the WWAN card to the system board.
Removing and installing components 37
5. Place the metal shield on the WWAN card.
38 Removing and installing components
1. Connect the battery cable
2. Install the base cover.
3. Install the SD memory card.
4. Follow the procedure in after working inside your computer.
Fan
Removing the fan
1. Follow the procedure in before working inside your computer.
2. Remove the SD memory card.
3. Remove the base cover.
4. Disconnect the battery cable.
NOTE: For the system shipped with a WWAN card, there is an L-shaped bracket (P-sensor bracket) that covers the four
WWAN LTE antenna cable connections to the system board. The screw that secures the bracket to the system also helps
secure the fan to the system. Technicians must first remove the bracket before removing the fan and then reinstall the
bracket after the fan is reinstalled.
1. Peel off the Mylar sheet from the system board.
Removing and installing components 39
2. Disconnect the fan cable [1] from the connector on the system board [1].
3. Partially peel off the metal foil [2] and the black tape [3] on the SSD shield.
40 Removing and installing components
4. Remove the single (M2x2) screw [1] that secures the WWAN P-sensor bracket to the system board.
5. Remove the WWAN P-sensor bracket [2] from the system board.
6. Partially peel off the padded gasket [1] from the fan case.
7. Remove the single (M2x2) screw [2] that secures the fan to the system board.
Removing and installing components 41
8. CAUTION: There are cushions, partially obstructing the palmrest, on the bottom side of the fan. Technicians
should not lift the fan directly up, as it may damage the fan.
Partially lift the left side of the fan and slide it to the left to remove it from the computer.
42 Removing and installing components
Installing the fan
For the system shipped with a WWAN card, there is an L-shaped bracket (P-sensor bracket) that covers the four WWAN LTE
antenna cable connections to the system board. The screw that secures the bracket to the system also helps secure the fan to
the system. Technicians must first remove the bracket before removing the fan and then reinstall the bracket after the fan is
reinstalled.
1. Slide the fan at an angle into its slot on the system board.
Removing and installing components 43
2. Replace the single (M2x2) screw [1] to secure the fan to the system board.
3. Adhere the padded rubber gasket [2] on the fan case.
44 Removing and installing components
4. Align the screw holes on the WWAN P-sensor bracket [1] with the screw hole on the fan.
5. Replace the single (M2x2) screw [2] to secure the WWAN P-sensor bracket to the fan.
6. Connect the fan cable [1] to the connector on the system board.
7. Adhere the black tape [2] and the metal foil [3] partially covering the SSD shield.
Removing and installing components 45
8. Adhere the Mylar sheet on the system board.
46 Removing and installing components
1. Connect the battery cable
2. Install the base cover.
3. Install the SD memory card.
4. Follow the procedure in after working inside your computer.
Speakers
Removing the speakers
1. Follow the procedure in before working inside your computer.
2. Remove the SD memory card.
3. Remove the base cover.
4. Disconnect the battery cable.
1. Disconnect the speaker cable [1] from the connector from the system board and peel off the speaker flex cable [2] from the
battery.
2. Remove the three (M1.6x1.4) screws [1] that secure the speakers to the system board and lift the speakers off the computer
[2].
Removing and installing components 47
Installing the speakers
1. Align the screw holes on the speakers [1] with the screw holes on the chassis
2. Replace the three (M1.6x1.4) screws [2] that secure the speakers to the chassis.
48 Removing and installing components
3. Connect the speaker cable [1] to the connector on the system board and adhere the speaker flex cable [2] on the battery.
Removing and installing components 49
1. Connect the battery cable
2. Install the base cover.
3. Install the SD memory card.
4. Follow the procedure in after working inside your computer.
Heatsink
Removing the heatsink
1. Follow the procedure in before working inside your computer.
2. Remove the SD memory card.
3. Remove the base cover.
4. Disconnect the battery cable.
1. Partially peel off the Mylar sheet [1] from the system board.
2. Disconnect the camera and touch screen FPC cable [2] from the connector on the system board.
3. Peel off the camera and touch screen FPC cable from the heatsink shield [3].
50 Removing and installing components
4. Remove the metal foil from the heatsink shield.
Removing and installing components 51
5. Remove the heatsink shield from the system board.
52 Removing and installing components
6. Remove the four (M1.6x2.5) screws [1] that secure the heatsink on the system board.
7. Lift the heatsink [2] off the system board.
Removing and installing components 53
Installing the heatsink
1. Align the screw holes on the heatsink [1] with the screw holes on the system board.
2. Replace the four (M1.6x2.5) screws [2] that secure the heatsink to the system board.
54 Removing and installing components
3. Place the heatsink shield on the heatsink.
Removing and installing components 55
4. Adhere the metal foils on the heatsink shield.
56 Removing and installing components
5. Adhere the camera and touch screen FPC cables on the heatsink shield [1].
6. Connect the camera and touch screen FPC cables [2] to the connector on the system board.
7. Adhere the Mylar sheet [3] on the system board.
Removing and installing components 57
1. Connect the battery cable
2. Install the base cover.
3. Install the SD memory card.
4. Follow the procedure in after working inside your computer.
Display assembly
Removing the display assembly
1. Follow the procedure in before working inside your computer.
2. Remove the SD memory card.
3. Remove the base cover.
4. Disconnect the battery cable.
1. Partially peel off the Mylar sheet [1] from the system board.
2. Disconnect the camera and touch screen FPC cable [2] from the connector on the system board.
3. Peel off the camera and touch screen FPC cable from the heatsink shield [3].
58 Removing and installing components
4. Peel off the tape on the display cable [1].
5. Pry the retention clips on both sides and flip open the latch [2].
CAUTION: The connector for the display cable features 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. After
flipping open the latch, technicians must grasp the left and right sides of the cable's connector head and
disconnect the display cable from the system board in a direct upward motion to prevent damage to the
connector's pins.
6. Disconnect the display cable from the connector on the system board [3].
Removing and installing components 59
7. Remove the six (M2.5x3.5) screws [1] that secures the display hinges to the computer.
8. Lift the display assembly off the computer [2].
60 Removing and installing components
NOTE: The display assembly is a Hinge-Up Design (HUD) assembly and cannot be further disassembled once it is
removed from the bottom chassis. If any components of the HUD assembly are malfunctioning and need to be replaced,
replace the entire display assembly.
Installing the display assembly
1. Install the display assembly with hinges open at 180º aligned to the computer [1].
2. Replace the six (M2.5x3.5) screws [1] that secures the display hinges to the computer [2].
3. Connect the display cable [1] to the connector on the system board.
4. Close the latch [2] and adhere the tape on the display cable [3].
Removing and installing components 61
5. Route the camera and touch screen FPC and adhere it on the heatsink shield [1].
6. Connect the camera and touch screen FPC to the connector on the system board [2] and stick the Mylar sheet on the
system board [3].
62 Removing and installing components
1. Connect the battery cable
2. Install the base cover.
3. Install the SD memory card.
4. Follow the procedure in after working inside your computer.
Battery
Lithium-ion battery precautions
CAUTION:
●Exercise caution when handling Lithium-ion batteries.
●Discharge the battery completely before removing it. Disconnect the AC power adapter from the system and
operate the computer solely on battery power—the battery is fully discharged when the computer no longer
turns on when the power button is pressed.
●Do not crush, drop, mutilate, or penetrate the battery with foreign objects.
●Do not expose the battery to high temperatures, or disassemble battery packs and cells.
●Do not apply pressure to the surface of the battery.
●Do not bend the battery.
●Do not use tools of any kind to pry on or against the battery.
●Ensure any screws during the servicing of this product are not lost or misplaced, to prevent accidental
puncture or damage to the battery and other system components.
●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.
Removing and installing components 63
●Always purchase genuine batteries from www.dell.com or authorized Dell partners and resellers.
Removing the battery
1. Follow the procedure in before working inside your computer.
2. Remove the SD memory card.
3. Remove the base cover.
4. Disconnect the battery cable.
5. Remove the speakers.
1. Peel off the tape [1] and unroute the wireless antennae cables from the routing guides on the battery [2].
NOTE: The cables for the wireless antennas are routed over the plastic bracket at the top left corner and within the
routing channels along the left and bottom side of the battery. As a result, technicians must be careful when unrouting
the antenna cables from their routing guides while they are still attached to the wireless card. If there is difficulty in
unrouting the antenna cables from their routing channels, remove the WLAN card from the computer to create space to
unroute the cables.
2. Remove the single (M1.6x4.5) screw [1] in highlighted in red circle and four (M2x3) screws highlighted in yellow color that
secure the battery to the chassis.
3. Lift and remove the battery off the computer [2].
64 Removing and installing components
Figure 2. 4-cell battery
NOTE: A 6-cell battery has an extra M2x4 screw shown in green. Remove the screw before removing the battery from
the computer.
Table 8. Battery screw description
Size Amount
4-cell battery
Yellow M2x3L 5
Red M1.6x4.5L 1
6-cell battery Green M2x4L 1
Removing and installing components 65
Figure 3. 6-cell battery
Installing the battery
1. Align the screw holes on the battery with the screw holes on the palmrest assembly [1].
2. Replace the four (M2x3) screws and single (M1.6x4.5) screw that secure the battery to the palmrest assembly [2].
NOTE: Install the extra M2x4 screw for 6-cell battery. The screw is shown in green, in the battery disassembly section.
3. Stick the tape on wireless antennae cable securing it to the battery [1].
66 Removing and installing components
4. Thread the antennae cables along the routing channels and supporting bracket on the battery [2].
5. Connect the battery cable to the system board.
1. Connect the battery cable
2. Install the base cover.
3. Install the SD memory card.
4. Follow the procedure in after working inside your computer.
Removing and installing components 67
System board
Removing the system board
1. Follow the procedure in before working inside your computer.
2. Remove the SD memory card.
3. Remove the base cover.
4. Disconnect the battery cable.
5. Remove the coin cell.
6. Remove the SSD.
7. Remove the WLAN card.
8. Remove the WWAN card.
9. Remove the fan.
10. Remove the speakers.
11. Remove the heatsink.
12. Remove the battery.
1. Disconnect the coin cell cable from the system board [1] and remove the coin cell from the system board [2].
After removing all brackets and disconnecting all cables, there are five screws that secure the system board to the palmrest.
One of the screw is covered by the Real Time Clock (RTC) battery. Technicians must first peel the RTC battery off the
system board in order to access all the screws for the system board.
2. Peel off the tape on the display cable connector of the system board [3].
3. Pry the retention clips on both sides of the display cable connector, to flip open the latch [4].
4. CAUTION: The connector for the display cable features an actuator that locks it in place on the system
board. Flip open the latch to disconnect the display cable from the system board. Grasp the left and right
sides of the cable's connector head and disconnect the display cable from the system board in a direct
upward motion to prevent damage to the connector's pins.
Disconnect the display cable from the system board [5].
68 Removing and installing components
5. Disconnect the following power button cable from the system board [1].
6. Disconnect the USH board cable [2] and keyboard with backlight cable [3] from the system board.
7. Disconnect the touchpad cable [4] and LED board cable [5] from the system board.
Removing and installing components 69
8. Remove the single (M2x2) screw [1] securing the power fingerprint bracket to system board.
9. Remove the power fingerprint bracket [2] and disconnect the cable from the system board [3].
10. Disconnect the LTE P-sensor and isolator antenna cables [4] from the system board.
11. Disconnect the LTE MAIN and AUX antennae cables [5] from the system board.
Insert a plastic scribe into the slit at the bottom-left corner of the connector and then carefully pry up the cable connector
from the system board.
70 Removing and installing components
12. Remove the single (M2x2) screw [1] and remove the SSD bracket from the system board [2].
13. Remove the two (M2x4) screws [3] and remove the USB Type-C bracket [4] from the system board.
Removing and installing components 71
14. CAUTION: For models shipped with no LTE support, the dummy SIM card tray must first be removed from
the system before removing the system board.
Remove the five (M2x3) screws [1] and remove the system board from the computer [2].
NOTE: Lifting the system board from the thin middle portion might damage the board.
15. Hold the system board from the right side of the fan compartment, and gently lift it. Slightly bend the system board in order
to remove it from the system.
72 Removing and installing components
Installing the system board
1. Install the system board in the computer [1] and install the five (M2x3) screws securing it to the computer.
NOTE: After removing all brackets and disconnecting all cables, there are five screws that secure the system board to
the palmrest. One of the screw is covered by the Real Time Clock (RTC) battery. Technicians must first peel the RTC
battery off the system board in order to access all the screws for the system board.
Removing and installing components 73
2. Install the USB Type-C bracket [1] on the system board and secure it using two (M2x4) screws [2] on the system board.
3. Install the SSD bracket [3] and secure it using a single (M2x2) screw [4] to the system board.
74 Removing and installing components
4. Connect the Power button/fingerprint reader cable to the system board [1].
5. Install the power button/finger print reader bracket [2] on the system board and secure it using the single (M2x2) screw [3].
6. Connect the LTE P-sensor and isolator antenna cables [4] on the system board.
7. Connect the LTE MAIN and AUX antennae cables [5] on the system board.
Removing and installing components 75
8. Connect the following power button cable to the system board [1].
9. Connect the USH board cable [2] and keyboard with backlight cable [3] to the system board.
10. Connect the touchpad cable [4] and LED board cable [5] to the system board.
76 Removing and installing components
11. Install the coin cell [1] on the system board and connect its cable to the system board [2].
12. Connect the display cable to the system board [3] and flip close the actuator [4].
13. Secure the display cable connector by sticking the tape on the system board [5].
Removing and installing components 77
1. Install the battery.
2. Install the heatsink
3. Install the speaker.
4. Install the fan.
5. Install the WWAN card.
6. Install the WLAN card.
7. Install the SSD.
8. Install the coin cell
9. Connect the battery cable
10. Install the base cover.
11. Install the SIM card
12. Install the SD memory card.
13. Follow the procedure after working inside your computer.
Keyboard
Removing the keyboard
1. Follow the procedure in before working inside your computer.
2. Remove the SD memory card.
3. Remove the base cover.
4. Disconnect the battery cable.
5. Remove the coin cell.
6. Remove the SSD.
7. Remove the WLAN card.
78 Removing and installing components
8. Remove the WWAN card.
9. Remove the fan.
10. Remove the speakers.
11. Remove the battery.
12. Remove the heatsink.
NOTE: System board can be removed with heatsink assembly attached.
13. Remove the system board.
1. Peel off the USH board cable [1], touchpad cable [2], and LED board cable [3] from the keyboard base.
2. Peel back the two pieces of LTE antenna module copper foil [1, 3] and LTE AUX cable from the keyboard [2].
3. Disconnect the smartcard reader FPC from the USH board [4] and peel off the FPC cable from the keyboard [5].
Removing and installing components 79
4. Remove the two (M1.6x1.5) screws [1] to remove the middle battery bracket [2] from the computer.
5. Peel off the keyboard and backlight FPC cables from the keyboard [3].
6. Remove the single (M1.6x1.5) screw [4] to remove the left battery bracket [5] from the computer.
80 Removing and installing components
7. Remove the 40 (M1.6x1.5) screws that secure the keyboard to the palmrest assembly. Several of the screws are covered by
the touchpad flexible flat cable, LED flexible flat cable (FFC), keyboard flexible printed circuit (FPC), and copper foil.
Technicians must peel back these FFC/FPC/foil in order to access the keyboard screws.
Removing and installing components 81
8. Lift the keyboard off the palmrest assembly.
82 Removing and installing components
Installing the keyboard
1. Place the keyboard on the palmrest assembly.
Removing and installing components 83
2. Replace the 40 (M1.6x1.5) screws on the keyboard to secure it to the palmrest assembly. Several of the screws are covered
by the touchpad flexible flat cable, LED flexible flat cable (FFC), keyboard flexible printed circuit (FPC), and copper foil.
Technicians must peel back these FFC/FPC/foil in order to access the keyboard screws.
84 Removing and installing components
3. Install the middle battery bracket [1] and secure it using two (M1.6x1.5) screws [2].
4. Stick the keyboard and backlight FPC cables to the keyboard [3].
5. Install left battery bracket [4] and secure it using single (M1.6x1.5) screw [5].
Removing and installing components 85
6. Stick the two pieces of LTE antenna module copper foil [1, 3] and LTE AUX cable on the keyboard [2].
7. Route and stick the smart card FPC cable [4] on the keyboard and connect it to the USH board [5].
86 Removing and installing components
8. Stick the USH board cable [1], touchpad cable [2], and LED board cable [3] on the keyboard base.
1. Install the system board
2. Install the battery.
3. Install the heatsink
4. Install the speaker.
5. Install the fan.
6. Install the WWAN card.
7. Install the WLAN card.
8. Install the SSD.
9. Install the coin cell
10. Connect the battery cable
11. Install the base cover.
12. Install the SIM card
13. Install the SD memory card.
14. Follow the procedure after working inside your computer.
Palmrest assembly
1. Follow the procedure in before working inside your computer.
2. Remove the SD memory card.
3. Remove the base cover.
4. Disconnect the battery cable.
5. Remove the coin cell.
6. Remove the SSD.
7. Remove the WLAN card.
8. Remove the WWAN card.
9. Remove the fan.
10. Remove the speakers.
Removing and installing components 87
11. Remove the heatsink.
NOTE: System board can be removed with heatsink assembly attached.
12. Remove the display assembly.
13. Remove the battery.
14. Remove the system board.
15. Remove the keyboard.
1. After performing the preceding steps, you are left with palmrest assembly.
2. Transfer the post-requisite components onto the new palmrest assembly.
Details of the Power button with FPC
1. WWAN antenna module with antenna cables and FPCs (for models shipped with a WWAN card)
2. SmartCard reader with FFC (for models shipped with a SmartCard reader)
3. LED board with FFC
4. Touchpad with FPC
5. Wireless antenna module with antenna cables
6. NFC module with FPC (for models shipped with an NFC reader)
7. USH daughter board with FPC (for models shipped with a USH daughter board)
8. Fingerprint reader module with FPC (for models shipped with a Fingerprint reader)
9. Power button with FPC
1. Install the keyboard
2. Install the system board
3. Install the battery.
4. Install the display assembly
5. Install the heatsink
6. Install the speaker.
7. Install the fan.
8. Install the WWAN card.
9. Install the WLAN card.
10. Install the SSD.
88 Removing and installing components
Troubleshooting
Topics:
•SupportAssist Diagnostics
•System-diagnostic lights
•LED Indicators and Characteristics
•M-BIST
•LCD Built-in Self Test (BIST)
•Flashing BIOS (USB key)
•Flashing the BIOS
•Backup media and recovery options
•WiFi power cycle
•Flea power release
SupportAssist Diagnostics
The SupportAssist diagnostics (also known as system diagnostics) performs a complete check of your hardware. The
SupportAssist 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:
●Run tests automatically or in an interactive mode
●Repeat tests
●Display or save test results
●Run thorough tests to introduce additional test options to provide extra information about the failed devices
●View status messages that inform you if tests are completed successfully
●View error messages that inform you of problems encountered during testing
NOTE: The SupportAssist window displays, listing all devices detected in the computer. The diagnostics starts running the
tests on all the detected devices.
Running SupportAssist diagnostics
Invoke diagnostics by either of the methods that are suggested below:
●Tap F12 key on keyboard, as the Dell splash screen appears, until you get the message Diagnostic Boot Selected.
●On the one-time boot menu screen, use the Up/Down arrow key to select the Diagnostics option and then press Enter.
●Press and Hold Function (Fn) key on the keyboard and press the Power button to power on the system.
SupportAssist diagnostic User Interface
This section contains information on SupportAssist-Basic and Advanced Screen.
SupportAssist opens the basic screen on start. You can switch to the advanced screen using the icon at the bottom left of the
screen. The advanced screen shows detected devices in a tiled format. Specific tests can be included or excluded only in the
advanced mode.
SupportAssist Basic Screen
The Basic Screen has minimal controls which allows easy navigation for the user to start or stop the diagnostics.
5
90 Troubleshooting
SupportAssist Advanced Screen
The advanced screen allows more directed testing and contains more detailed information about the overall health of the
system. The user can get to this screen by simply swiping a finger to the left on touchscreen systems or clicking the next page
button on the lower left-hand side of the basic screen.
To run the test on specific device or run a specific test
1. To run a diagnostic test on a specific device, press Esc and click Yes to stop the diagnostic test.
2. Select the device from the using the checkbox in the top left of the test tile and click Run Tests or use Thorough Option
check run more intensive tests.
Troubleshooting 91
SupportAssist Error Messages
When the Dell SupportAssist Diagnostic detects an error while running, it will pause the test and the following window is
displayed:
●By responding Yes, the diagnostic will continue testing the next device and the error details will be available in the summary
report.
●By responding No, the diagnostic will stop testing the remaining untested device.
●By responding Retry, the diagnostic will ignore the error and rerun the last test.
Capture the error code with Validation code or Scan QR code and Contact Dell.
NOTE: Some tests for specific devices require user interaction. Always ensure that you are present before the computer
when the diagnostic tests are performed
System-diagnostic lights
Power and battery-status light
The power and battery status light indicates the power and battery status of the computer. These are the power states:
Solid white:Power adapter is connected and the battery has more than 5% charge.
Amber:Computer is running on battery and the battery has less than 5% charge.
Off:
●Power adapter is connected, and the battery is fully charged.
●Computer is running on battery, and the battery has more than 5% charge.
●Computer is in sleep state, hibernation, or turned off.
The power and battery-status light may blink amber or white according to pre-defined "beep codes" indicating various failures.
For example, the power and battery-status light blinks amber two times followed by a pause, and then blinks white three times
followed by a pause. This 2,3 pattern continues until the computer is turned off, indicating no memory or RAM is detected.
The following table shows different power and battery-status light patterns and associated problems.
NOTE: The following diagnostic light codes and recommended solutions are intended for Dell service technicians to
troubleshoot problems. 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.
92 Troubleshooting
Table 9. Diagnostic-light LED codes
Diagnostic light codes
(Amber,White)
Problem description
2,1 Processor failure
2,2 System board: BIOS or ROM (Read-Only
Memory) failure
2,3 No memory or RAM (Random-Access Memory)
detected
2,4 Memory or RAM (Random-Access Memory)
failure
2,5 Invalid memory installed
2,6 System-board or chipset error
2,7 Display failure - SBIOS message
3,1 Coin-cell battery failure
3,2 PCI, video card/chip failure
3,3 Recovery image not found
3,4 Recovery image found but invalid
3,5 Power-rail failure
3,6 System BIOS Flash incomplete
3,7 Management Engine (ME) error
LED Indicators and Characteristics
Battery Charge and Status LED
Table 10. Battery Charge and Status LED Indicator
Power Source LED Behavior System Power State Battery Charge Level
AC Adapter Off S0 - S5 Fully Charged
AC Adapter Solid White S0 - S5 < Fully Charged
Battery Off S0 - S5 11-100%
Battery Solid Amber (590+/-3 nm) S0 - S5 < 10%
●S0 (ON) - System is turned on.
●S4 (Hibernate) - The system consumes the least power compared to all other sleep states. The system is almost at an OFF
state, expect for a trickle power. The context data is written to hard drive.
●S5 (OFF) - The system is in a shutdown state.
M-BIST
M-BIST (Built In Self-Test) diagnostics tool, featuring improved accuracy in system board failures.
NOTE: M-BIST can be manually initiated before POST (Power On Self Test).
Troubleshooting 93
How to run M-BIST
NOTE: M-BIST must be initiated on the system from a power-off state either connected to AC power or with battery only.
1. Press and hold both the M key on the keyboard and the power button to initiate M-BIST.
2. With both the M key and the power button held down, the battery indicator LED may exhibit two states:
a. OFF: No fault detected with the system board
b. AMBER: Indicates a problem with the system board
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.
When you notice screen abnormalities like flickering, distortion, clarity issues, fuzzy or blurry image, horizontal or vertical lines,
color fade etc., it is always a good practice to isolate the LCD (screen) by running the Built-In Self Test (BIST).
How to invoke LCD BIST Test
1. Power off the Dell laptop.
2. Disconnect any peripherals that are connected to the laptop. Connect only the AC adapter (charger) to the laptop.
3. Ensure that the LCD (screen) is clean (no dust particles on the surface of the screen).
4. Press and hold D key and Power on the laptop to enter LCD built-in self test (BIST) mode. Continue to hold the D key, until
you see color bars on the LCD (screen).
5. The screen will display multiple color bars and change colors on the entire screen to red, green, and blue.
6. Carefully inspect the screen for abnormalities.
7. Press Esc key to exit.
NOTE: Dell SupportAssist Pre-boot diagnostics upon launch, initiates an LCD BIST first, expecting a user intervention
confirm functionality of the LCD.
Flashing BIOS (USB key)
1. Follow the procedure from step 1 to step 7 in "Flashing the BIOS" to download the latest BIOS setup program file.
2. Create a bootable USB drive. For more information see the knowledge base article SLN143196 at www.dell.com/support.
3. Copy the BIOS setup program file to the bootable USB drive.
4. Connect the bootable USB drive to the computer that needs the BIOS update.
5. Restart the computer and press F12 when the Dell logo is displayed on the screen.
6. Boot to the USB drive from the One Time Boot Menu.
7. Type the BIOS setup program filename and press Enter.
8. The BIOS Update Utility appears. Follow the instructions on the screen to complete the BIOS update.
Flashing the BIOS
You may need to flash (update) the BIOS when an update is available or when you replace the system board.
Follow these steps to flash the BIOS:
1. Turn on your computer.
2. Go to www.dell.com/support.
3. Click Product support, enter the Service Tag of your computer, and then click Submit.
NOTE: If you do not have the Service Tag, use the auto-detect feature or manually browse for your computer model.
94 Troubleshooting
4. Click Drivers & downloads > Find it myself.
5. Select the operating system installed on your computer.
6. Scroll down the page and expand BIOS.
7. Click Download to download the latest version of the BIOS for your computer.
8. After the download is complete, navigate to the folder where you saved the BIOS update file.
9. Double-click the BIOS update file icon and follow the instructions on the screen.
Backup media and recovery options
It is recommended to create a recovery drive to troubleshoot and fix problems that may occur with Windows. Dell proposes
multiple options for recovering Windows operating system on your Dell PC. For more information. see Dell Windows Backup
Media and Recovery Options.
WiFi power cycle
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.
1. Turn off your computer.
2. Turn off the modem.
3. Turn off the wireless router.
4. Wait for 30 seconds.
5. Turn on the wireless router.
6. Turn on the modem.
7. Turn on your computer.
Flea power release
Flea power is the residual static electricity that remains on the computer even after it has been powered off and the battery has
been removed. The following procedure provides the instructions on how to conduct flea power release:
1. Turn off your computer.
2. Disconnect the power adapter from your computer.
3. Press and hold the power button for 15 seconds to drain the flea power.
4. Connect the power adapter to your computer.
5. Turn on your computer.
Troubleshooting 95
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 11. Self-help resources
Self-help resources Resource location
Information about Dell products and services www.dell.com
Dell Help and Support app
Accessing help In Windows search, type Help and Support, and press
Enter.
Online help for operating system www.dell.com/support/windows
Troubleshooting information, user manuals, set up
instructions, product specifications, technical help blogs,
drivers, software updates, and so on.
www.dell.com/support
Dell knowledge base articles for various computer concerns 1. Go to www.dell.com/support.
2. Type the subject or keyword in the Search box.
3. Click Search to retrieve the related articles.
Learn and know the following information about your product:
●Product specifications
●Operating system
●Setting up and using your product
●Data backup
●Troubleshooting and diagnostics
●Factory and system restore
●BIOS information
See Me and My Dell at www.dell.com/support/manuals.
To locate the Me and My Dell relevant to your product,
identify your product through one of the following:
●Select Detect Product.
●Locate your product through the drop-down menu under
View Products.
●Enter the Service Tag number or Product ID in the
search bar.
Contacting Dell
To contact Dell for sales, technical support, or customer service issues, see www.dell.com/contactdell.
NOTE: Availability varies by country and product, and some services may not be available in your country.
NOTE: If you do not have an active Internet connection, you can find contact information about your purchase invoice,
packing slip, bill, or Dell product catalog.
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96 Getting help and contacting Dell