Dell Latitude 7400 2-in-1 Service Manual Regulatory Model: P110G Regulatory Type: P110G001 August 2020 Rev.
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. © 2019 2020 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries.
Contents Chapter 1: Working on your computer........................................................................................... 5 Safety instructions.............................................................................................................................................................. 5 Turning off your computer — Windows 10...................................................................................................................5 Before working inside your computer....
Installing the fan...........................................................................................................................................................47 Speakers...............................................................................................................................................................................51 Removing the speakers.................................................................................................................................
1 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 Prerequisites 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.
Steps 1. Click or tap 2. Click or tap . and then click or tap Shut down. 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 About this task To avoid damaging your computer, perform the following steps before you begin working inside the computer. Steps 1.
2 Technology and components This chapter details the technology and components available in the system. Topics: • • • • USB features USB Type-C HDMI 1.4a Corning Gorilla Glass USB features Universal Serial Bus, or USB, was introduced in 1996. It dramatically simplified the connection between host computers and peripheral devices like mice, keyboards, external drivers, and printers. Table 1. USB evolution Type Data Transfer Rate Category Introduction Year USB 2.0 480 Mbps High Speed 2000 USB 3.
● An additional physical bus that is added in parallel with the existing USB 2.0 bus (refer to the picture below). ● USB 2.0 previously had four wires (power, ground, and a pair for differential data); USB 3.0/USB 3.1 Gen 1 adds four more for two pairs of differential signals (receive and transmit) for a combined total of eight connections in the connectors and cabling. ● USB 3.0/USB 3.1 Gen 1 utilizes the bidirectional data interface, rather than USB 2.0's half-duplex arrangement.
USB Type-C USB Type-C is a new, tiny physical connector. The connector itself can support various exciting new USB standards like USB 3.1 and USB power delivery (USB PD). 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.
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. 2. 3. 4. Thunderbolt 3 uses USB Type-C connector and cables - It is compact and reversible Thunderbolt 3 supports speed up to 40 Gbps DisplayPort 1.
● 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, 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.
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) 489 kgf/mm 2 ● Un-strengthened ● Strengthened 596 kgf/mm 2 596 kgf/mm 2 Fracture Toughness 0.69 MPa m 0.5 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) Specifications subject to change Optical Table 4. Optical Refractive Index (590 nm) Core glass** 1.
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.
3 Major components of your system 1. Base cover 2.
3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. Touchscreen FPC cable Heatsink Fan System board Battery Speakers Palmrest assembly Coin cell WLAN card WWAN card WWAN shield Solid state drive 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.
4 Removing and installing components 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 T-30 torx screwdriver NOTE: The #0 screw driver is for screw
Table 7. Screw Size List (continued) Component Screw type Quantity 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 ● M2x3 ● 1 ● 4 Image ● ● System board ● M2x2 ● M2x4 ● M2x3 ● 2 ● 2 ● 5 ● ● ● Keyboard M1.6x1.5 ● 1 ● 2 ● 40 SD memory card Removing the SD memory card Steps 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].
Installing the SD memory card Steps Insert the SD memory card into its slot [1] until it clicks into place [2].
SIM card tray Removing the SIM card tray NOTE: This procedure applies for models that are shipped with WWAN card only. Steps 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].
Installing the SIM card tray Steps Install the SIM card tray into its slot on the computer [1] and push to lock it in place [2].
Base cover Removing the base cover Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the SD memory card. Steps 1. Loosen the 10 captive screws that secure the base cover to the computer.
2. Use a plastic scribe [1] to pry the base cover along the recess points located in the hinge indents as shown in the image. 3. 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.
4. Pry along the left, right and bottom edges of the base.
5. Slide the base cover outwards before removing it off the computer and then life the base cover off the computer.
Installing the base cover Steps 1. Slide in base cover and place it on the computer.
2. Press along the edges of the base cover until it clicks into place.
3. Tighten the 10 captive screws to secure the base cover to the computer.
4. Press the two highlighted middle area of the system as shown in the image after the screws are secured to complete the installation process.
Next steps 1. Install the SD memory card. 2. Follow the procedure in after working inside your computer. Battery cable Disconnecting the battery cable Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the SD memory card. 3. Remove the base cover. Steps Disconnect the battery cable from the connector on the system board.
Connecting the battery cable Steps Connect the battery cable to the connector on the system board.
Next steps 1. 2. 3. 4. Install the base cover. Install the SIM card. Install the SD memory card. Follow the procedure in after working inside your computer. Coin cell Removing the coin cell battery Prerequisites 1. 2. 3. 4. Follow the procedure in before working inside your computer. Remove the SD memory card. Remove the base cover. Disconnect the battery cable. Steps 1. Disconnect the coin-cell battery cable from the connector on the system board [1]. 2.
Installing the coin-cell battery Steps 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].
Next steps 1. 2. 3. 4. Connect the battery cable Install the base cover. Install the SD memory card. Follow the procedure in after working inside your computer. Solid state drive Removing the solid state drive Prerequisites 1. 2. 3. 4. Follow the procedure in before working inside your computer. Remove the SD memory card. Remove the base cover. Disconnect the battery cable. Steps 1. Peel off the metal foil [1] and the black tape [2] that partially covers the solid state drive (SSD) cover.
2. Remove the single (M2x2) screw [1] that secures the SSD shield to the system board. 3. Lift to remove the SSD shield from the system board [2].
4. Slide and remove the SSD module from the connector on the system board. Installing the solid state drive Steps 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. 3. Affix the black tape [1] and the metal foil [2] to secure the SSD shield in place.
Next steps 1. 2. 3. 4. Connect the battery cable Install the base cover. Install the SD memory card. Follow the procedure in after working inside your computer. WLAN card Removing the WLAN card Prerequisites 1. 2. 3. 4. Follow the procedure in before working inside your computer. Remove the SD memory card. Remove the base cover. Disconnect the battery cable. Steps 1. Partially peel off the Mylar sheet that covers the WLAN card [1]. 2.
Installing the WLAN card Steps 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. 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].
Next steps 1. 2. 3. 4. Connect the battery cable Install the base cover. Install the SD memory card. Follow the procedure in after working inside your computer. WWAN card Removing the WWAN card Prerequisites 1. 2. 3. 4. Follow the procedure in before working inside your computer. Remove the SD memory card. Remove the base cover. Disconnect the battery cable. Steps 1. Remove the metal shield from the WWAN card.
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.
Installing the WWAN card Steps 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.
5. Place the metal shield on the WWAN card.
Next steps 1. 2. 3. 4. Connect the battery cable Install the base cover. Install the SD memory card. Follow the procedure in after working inside your computer. Fan Removing the fan Prerequisites 1. 2. 3. 4. Follow the procedure in before working inside your computer. Remove the SD memory card. Remove the base cover. Disconnect the battery cable.
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.
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.
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.
Installing the fan About this task For the Latitude 7400 2-in-1 model 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. Steps 1. Slide the fan at an angle into its slot on the system board.
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.
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.
8. Adhere the Mylar sheet on the system board.
Next steps 1. 2. 3. 4. Connect the battery cable Install the base cover. Install the SD memory card. Follow the procedure in after working inside your computer. Speakers Removing the speakers Prerequisites 1. 2. 3. 4. Follow the procedure in before working inside your computer. Remove the SD memory card. Remove the base cover. Disconnect the battery cable. Steps 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.
Installing the speakers Steps 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.
3. Connect the speaker cable [1] to the connector on the system board and adhere the speaker flex cable [2] on the battery.
Next steps 1. 2. 3. 4. Connect the battery cable Install the base cover. Install the SD memory card. Follow the procedure in after working inside your computer. Heatsink Removing the heatsink Prerequisites 1. 2. 3. 4. Follow the procedure in before working inside your computer. Remove the SD memory card. Remove the base cover. Disconnect the battery cable. Steps 1. Partially peel off the Mylar sheet [1] from the system board. 2.
4. Remove the metal foil from the heatsink shield.
5. Remove the heatsink shield from the system board.
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.
Installing the heatsink Steps 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.
3. Place the heatsink shield on the heatsink.
4. Adhere the metal foils on the heatsink shield.
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.
Next steps 1. 2. 3. 4. Connect the battery cable Install the base cover. Install the SD memory card. Follow the procedure in after working inside your computer. Display assembly Removing the display assembly Prerequisites 1. 2. 3. 4. Follow the procedure in before working inside your computer. Remove the SD memory card. Remove the base cover. Disconnect the battery cable. Steps 1. Partially peel off the Mylar sheet [1] from the system board. 2.
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.
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].
NOTE: The display assembly for the Latitude 7400 2-in-1 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 Steps 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.
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].
Next steps 1. 2. 3. 4. Connect the battery cable Install the base cover. Install the SD memory card. 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 as much as possible before removing it from the system. This can be done by disconnecting the AC adapter from the system to allow the battery to drain.
● Always purchase genuine batteries from www.dell.com or authorized Dell partners and resellers. Removing the battery Prerequisites 1. 2. 3. 4. 5. Follow the procedure in before working inside your computer. Remove the SD memory card. Remove the base cover. Disconnect the battery cable. Remove the speakers. Steps 1. Peel off the tape [1] and unroute the wireless antennae cables from the routing guides on the battery [2].
Figure 3. 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 Yellow M2x3L 5 Red M1.6x4.
Figure 4. 6-cell battery Installing the battery Steps 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]. 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.
Next steps 1. 2. 3. 4. Connect the battery cable Install the base cover. Install the SD memory card. Follow the procedure in after working inside your computer. System board Removing the system board Prerequisites 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 72 Follow the procedure in before working inside your computer. Remove the SD memory card. Remove the base cover. Disconnect the battery cable. Remove the coin cell. Remove the SSD. Remove the WLAN card. Remove the WWAN card. Remove the fan.
Steps 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.
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.
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.
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.
Installing the system board Steps 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.
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.
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.
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.
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].
Next steps 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Install the battery. Install the heatsink Install the speaker. Install the fan. Install the WWAN card. Install the WLAN card. Install the SSD. Install the coin cell Connect the battery cable Install the base cover. Install the SIM card Install the SD memory card. Follow the procedure after working inside your computer. Keyboard Removing the keyboard Prerequisites 1. Follow the procedure in before working inside your computer. 2.
4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Disconnect the battery cable. Remove the coin cell. Remove the SSD. Remove the WLAN card. Remove the WWAN card. Remove the fan. Remove the speakers. Remove the battery. Remove the heatsink. Remove the system board. Steps 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.
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.
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.
8. Lift the keyboard off the palmrest assembly.
Installing the keyboard Steps 1. Place the keyboard on the palmrest assembly.
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.
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].
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].
8. Stick the USH board cable [1], touchpad cable [2], and LED board cable [3] on the keyboard base. Next steps 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. Install the system board Install the battery. Install the heatsink Install the speaker. Install the fan. Install the WWAN card. Install the WLAN card. Install the SSD. Install the coin cell Connect the battery cable Install the base cover. Install the SIM card Install the SD memory card. Follow the procedure after working inside your computer.
7. 8. 9. 10. 11. 12. 13. 14. 15. Remove Remove Remove Remove Remove Remove Remove Remove Remove the the the the the the the the the WLAN card. WWAN card. fan. speakers. heatsink. display assembly. battery. system board. keyboard. Steps 1. After performing the preceding steps, you are left with palmrest assembly. 2. Transfer the post-requisite components onto the new palmrest assembly. Next steps Details of the Power button with FPC 1. 2. 3. 4. 5. 6. 7. 8. 9.
4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. Install the display assembly Install the heatsink Install the speaker. Install the fan. Install the WWAN card. Install the WLAN card. Install the SSD. Install the coin cell Connect the battery cable Install the base cover. Install the SIM card Install the SD memory card. Follow the procedure after working inside your computer.
5 Troubleshooting Topics: • • • • • • • Enhanced Pre-Boot System Assessment (ePSA) diagnostics System diagnostic lights Flashing BIOS (USB key) Flashing the BIOS Backup media and recovery options WiFi power cycle Flea power release Enhanced Pre-Boot System Assessment (ePSA) diagnostics About this task The ePSA diagnostics (also known as system diagnostics) performs a complete check of your hardware. The ePSA is embedded with the BIOS and is launched by the BIOS internally.
System diagnostic lights Battery-status light Indicates the power and battery-charge status. Solid white — Power adapter is connected and the battery has more than 5 percent charge. Amber — Computer is running on battery and the battery has less than 5 percent charge. Off ● Power adapter is connected and the battery is fully charged. ● Computer is running on battery and the battery has more than 5 percent charge. ● Computer is in sleep state, hibernation, or turned off.
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.
Flea power release About this task 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: Steps 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.
6 Getting help Topics: • Contacting Dell Contacting Dell Prerequisites NOTE: If you do not have an active Internet connection, you can find contact information on your purchase invoice, packing slip, bill, or Dell product catalog. About this task Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services may not be available in your area. To contact Dell for sales, technical support, or customer service issues: Steps 1.
