Latitude 7390 2-in-1 Owner's Manual Regulatory Model: P29S Regulatory Type: P29S002
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. © 2018 - 2019 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries.
1 Working on your computer Topics: • • • Safety precautions Before working inside your computer After working inside your computer Safety precautions The safety precautions chapter details the primary steps to be taken before performing any disassembly instructions. Observe the following safety precautions before you perform any installation or break/fix procedures involving disassembly or reassembly: • • • • • • Turn off the system and all attached peripherals.
Perform the following steps to prevent ESD damage: • • • • Use a wired ESD wrist strap that is properly grounded. The use of wireless anti-static straps is no longer allowed; they do not provide adequate protection. Touching the chassis before handling parts does not ensure adequate ESD protection on parts with increased sensitivity to ESD damage. Handle all static-sensitive components in a static-safe area. If possible, use anti-static floor pads and workbench pads.
Transporting sensitive components When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport. Before working inside your computer 1. Ensure that your work surface is flat and clean to prevent the computer cover from being scratched. 2. Turn off your computer. 3. If the computer is connected to a docking device (docked), undock it. 4.
2 Removing and installing components Topics: • • • • • • • • • • • • • • • • • • • • • • Recommended tools Major components of your system Screw size list Micro Secure Digital Card Subscriber Identity Module SIM Card Base cover Battery PCIe Solid State Drive (SSD) WLAN card WWAN card Power board Speaker Smart Card Cage Fingerprint Board LED Board Heat Sink Display Assembly System Board Real time clock Keyboard Touchpad Buttons Palm rest Recommended tools The procedures in this document require the followi
Major components of your system 1. Display assembly 2.
3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Heatsink and fan assembly System board PCIe SSD Smart card cage LED board Speaker Touchpad buttons Palmrest assembly Battery WWAN card WLAN card 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. Screw size list Table 1.
Component M 2.5 x 2.5L M 2.5 x 4.0L M 2.0 x 3.0L NVMe SSD M 2 x 2L K3.6D M 2.0 x 2L K7D M 2 x 1.7L M 1.98 x 4L M 2.5 x 5 2 Micro Secure Digital Card Removing the Micro Secure Digital Card 1. Follow the procedure in Before working inside your computer. 2. Push the Micro Secure Digital (SD) card to release it from the computer. 3. Slide the Micro Secure Digital (SD) card out of the computer. Installing the Micro Secure Digital Card 1. Slide the Micro SD into the slot until it clicks into place. 2.
Subscriber Identity Module SIM Card Removing the micro SIM card or the micro SIM card tray CAUTION: Removing the micro SIM card when the computer is on may cause data loss or damage the card. NOTE: Micro SIM card tray is available only for systems that are shipped with WWAN card. 1. Insert a pin or a micro SIM card removal tool into the pinhole on the micro SIM card tray. 2. Use a scribe to pull the micro SIM card tray. 3.
Base cover Removing the base cover 1. Follow the procedure in Before working inside your computer. 2. Loosen the 8 (M2.5 x 5.0) captive screws that secure the base cover to the computer. 3. Use a plastic scribe to pry the base cover starting from the hinges at the top edge of the base cover and lift it from the computer. NOTE: The recesses are located near the hinges at the rear side of the computer. 4.
Installing the base cover 1. Align the base cover tabs to the slots on the edges of the computer. 2. Press the edges of the cover until it clicks into place. 3. Tighten the 8 (M2.5 x 5.0) captive screws to secure the base cover to the computer. 4. Follow the procedure in After working inside your computer. Battery Lithium-ion battery precautions CAUTION: 12 • Exercise caution when handling Lithium-ion batteries. • Discharge the battery as much as possible before removing it from the system.
• 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: a) MicroSD card b) SIM card tray NOTE: To remove both cards if equipped and no need to remove the blank filler c) Base cover 3. To remove the battery: a) Lift the ribbon, disconnect and remove the battery cable from the connector on the system board [1]. b) Remove the 4 (M1.
PCIe Solid State Drive (SSD) Removing the PCIe SSD card 1. Follow the procedure in Before working inside your computer. 2. Remove: a) MicroSD card b) SIM card tray NOTE: To remove both cards if equipped and no need to remove the blank filler c) Base cover d) Battery 3. To remove the PCIe SSD card: a) Loosen the 2 (M2.0 x 3.0) screws that secure SSD thermal plate in place [1]. b) Lift the thermal plate from the SSD card [2]. c) Remove the SSD card from the slot [3]. Installing the PCIe SSD 1.
WLAN card Removing the WLAN card 1. Follow the procedure in Before working inside your computer. 2. Remove: a) MicroSD card b) SIM card tray NOTE: Remove both the cards if equipped and no need to remove the blank filler c) Base cover d) Battery 3. To remove the WLAN card: a) b) c) d) Remove 1 (M2.0 x 3.0) screw that secures the wireless card bracket in place [1]. Lift the wireless card bracket [2]. Disconnect the WLAN cables from the connectors on the WLAN card [3]. Remove the WLAN card [4].
5. 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: a) MicroSD card b) SIM card tray NOTE: Remove both the cards if equipped and no need to remove the blank filler c) Base cover d) Battery 3. To remove the WWAN card: a) b) c) d) Remove 1 (M2.0 x 3.0) screw that secures the WWAN card bracket in place [1]. Lift the WWAN card bracket that secures the WWAN card [2].
d) MicroSD card NOTE: To install both cards if equipped. 5. Follow the procedure in After working inside your computer. NOTE: The IMEI number can also be found on the WWAN card. NOTE: When installing the display assembly or system board onto the system, the wireless, WWAN antennas must be routed correctly into the routing channels on the system board. Power board Removing the power board 1. Follow the procedure in Before working inside your computer. 2.
2. Replace the 2 (M2.0x3.0) screws to secure the power board to the computer. 3. Connect the power board cable to the connector on the system board. 4. Affix the coin cell battery on the computer. 5. Install the: a) b) c) d) Battery Base cover SIM card tray MicroSD card NOTE: To install both cards if equipped. 6. Follow the procedure in After working inside your computer. Speaker Removing the speaker module 1. Follow the procedure in Before working inside your computer. 2.
b) Un route the speaker cable from the retention clips and remove the tapes that secure the speaker cable [2]. 5. To remove the speaker module: a) Un route the speaker cable by removing the tapes near the palm rest [1]. b) Lift the speaker module from the computer. NOTE: You can use a plastic scribe to lift the speaker module from the computer.
Installing the speaker module 1. Place the speaker module into the slots on the computer. 2. Route the speaker cable through the routing channel and secure it with the tapes. 3. Connect the speaker cable to the connector on the system board. 4. Connect the smart cable to the connector on the palm rest. 5. Install the: a) b) c) d) e) Power board Battery Base cover SIM card tray Micro SD NOTE: To install both cards if equipped. 6. Follow the procedure in After working inside your computer.
4. To remove the smart card cage: a) Remove the 2 (M2 x 2.0) screws that secure the smart card cage to the computer [1]. b) Slide it out and lift the smart card cage from the computer [2]. Installing the smart card cage 1. Slide the smart card cage into the slot to align with the screw holders on the computer. 2. Replace the 2 (M2 x 2.0) screws to secure the smart card cage to the computer.
3. Affix the thermal pad on the SSD module. 4. Affix the LED board cable and connect it to the LED board on the computer. 5. Affix the smart card cable and connect it to the USH board on the computer . 6. Install the: a) b) c) d) e) SSD card battery base cover SIM card tray MicroSD card NOTE: To install both cards if equipped. 7. Follow the procedure in After working inside your computer. Fingerprint Board Removing the fingerprint reader board 1.
Installing the fingerprint reader board 1. Install the fingerprint reader board into the slot. 2. Place the fingerprint reader bracket on the board. 3. Replace 1(M2 x 3) screw to secure the bracket to the board. 4. Connect the fingerprint reader cable to the fingerprint reader board and the USH board. 5. Affix the coin cell battery on the speaker cable 6. Install the: a) b) c) d) Battery Base cover SIM card tray MicroSD card NOTE: To install both cards if equipped. 7.
a) b) c) d) Disconnect the LED board cable from the LED board [1]. Remove the tape that secures the LED board to the touchpad panel [2]. Remove the 2 (M2 x 3) screws that secure the LED board on the computer [3]. Lift the LED board from the computer [4]. Installing the LED board 1. Install the LED board into the slot. 2. Replace the 2 (M2 x 3) screws to secure the LED board. 3. Affix the tape to secure the LED board. 4. Connect the LED board cable to the LED board. 5.
c) Base cover d) Battery 3. To remove the heat sink assembly: a) b) c) d) Disconnect the fan cable from the system board [1]. Remove the 2 (M2.0 x 3.0) screws that secure the fan to the system board [2]. Remove the 4 (M2.0 x 3.0) screws that secure the heat sink to the system board [3]. Lift the heat sink assembly from the system board. Installing heat sink assembly 1. Align the heat sink assembly with screw holders on the system board. 2. Replace the 4 (M2.0 x 3.
2. Remove the: a) Micro SD b) SIM card tray NOTE: Remove both the cards if equipped and no need to remove the blank filler c) d) e) f) Base cover Battery WLAN card WWAN card 3. Peel the tapes that secure the antenna cables to the system board and remove the cables from the routing clips. 4. Disconnect the : a) b) c) d) 26 IR camera and touchscreen cable [1]. Remove the 2 (M 2 x 1.7L) screws that secure the eDP bracket and lift it away from the computer [2].
5. Lift the base of the computer away from the display assembly. 6. To remove the display assembly: a) Place the base of the computer with the display assembly. NOTE: Open LCD as shown in the illustration b) Remove the 4 (M2.5 x 4.0) screws that secure the display hinge brackets [1]. c) Lift the display assembly away from the computer [2].
Installing the display assembly 1. Place the base of the computer on a flat surface. 2. Align the display assembly with the display hinge screw holders. 3. Replace the 4 (M2.5 x 4.0) screws to secure the display assembly. 4. Close the display assembly and flip the computer. 5. Connect the cables: a) G-sensor and eDP cable b) Place the eDP bracket on the eDP cable and replace the 2 (M2 x 2) screw on the bracket. c) IR camera and touch screen cables 6. Route the antenna cables through the routing clips 7.
a) Micro SD b) SIM card tray NOTE: Remove both the cards if equipped and no need to remove the blank filler c) d) e) f) g) h) Base cover Battery SSD card WLAN card WWAN card Heatsink assembly 3. Disconnect the : a) b) c) d) IR camera and touchscreen cable [1]. Remove the 2 (M 2 x 1.7L) screws that secure the eDP bracket and lift it away from the computer [2]. Disconnect the eDP cable from the system board [3]. Disconnect th G-sensor and eDP cables [4]. 4.
5. To release the cables: a) Flip the coin cell battery to reveal the speaker cable [1]. b) Disconnect the speaker cable from the system board [2]. c) Disconnect the power board cable from the system board [3]. 6. Peel the tapes that secure antenna cables and remove the cables from the routing clips.
7. To remove the system board: a) b) c) d) Remove the 2 (M 1.98 x 4) screws securing the USB Type-C bracket [1]. Lift the USB Type-C bracket from the Type-C module [2]. Remove the 6 (M2.0 x 3.0) screws that secure the system board to the computer [3]. Lift the system board away from the computer[4].
Installing system board 1. Align the system board with the screw holders on the computer. 2. Replace the 6 (M2.0 x 3.0) screws to secure the system board to the computer. 3. Place the USB Type-C bracket on the Type-C module. 4. Replace the 2 (M 1.98 x 4L) screws to secure the USB Type-C bracket to the Type-C module. 5. Route the antenna cable through the routing clips and affix the tapes to secure the antenna cables. 6. Connect the power board and the speaker cable to the system board. 7.
Installing real time clock 1. Connect the coin cell battery cable to the system board. 2. Install: a) b) c) d) e) f) g) h) i) System board Heat sink module WWAN card WLAN card SSD card Battery Base cover SIM card tray Micro SD NOTE: To install both cards if equipped. 3. Follow the procedure in After working inside your computer. RTC is located on the system board and hence system board must be installed after the installation of the RTC.
g) WWAN card h) Heatsink assembly i) System board 3. disconnect and peel back the cables and SSD thermal pad: a) b) c) d) Touchpad and USH board cable [1] LED board cable [2] SSD thermal pad [3] Keyboard and keyboard backlit cable [4] 4. To remove the keyboard: a) Remove the 13 (M2.0 x 3.0) screws that secure the keyboard to the chassis [1]. b) Lift the keyboard from the chassis [2].
Removing keyboard from the keyboard tray 1. Follow the procedure in Before working inside your computer. 2. Remove the Keyboard 3. Remove the keyboard from the keyboard support tray: a) Remove the 6 (M2.0 x 2.0) screws that secure the keyboard to the keyboard assembly [1]. b) Lift the keyboard away from the keyboard support tray [2].
Installing keyboard to the keyboard tray 1. Align the keyboard with the screw holders on the keyboard tray. 2. Tighten the 6 (M2.0 x 2.0) screws to secure the keyboard to the keyboard tray. 3. Install the Keyboard. Installing keyboard assembly NOTE: The keyboard and the keyboard tray together are called the keyboard assembly. 1. Align the keyboard assembly with the screw holders on the chassis. 2. Replace the 13 (M2.0 x 3.0) screws that secure the keyboard to the chassis. 3.
Installing the touchpad 1. Place the touchpad buttons into the slot. 2. Replace the 2 (M2xL3) screws that secure touchpad buttons. 3. Insert the touchpad cable. 4. Install the: a) b) c) d) e) f) g) h) i) j) Keyboard System board Display assembly Speaker Heat sink assembly WWAN card WLAN card SSD module Battery Base cover 5. Follow the procedure in After working inside your computer. Palm rest Replacing palm rest 1. Follow the procedure in Before working inside your computer. 2.
f) g) h) i) j) k) l) Heat sink assembly Speaker LED board Display assembly System board Keyboard Touchpad buttons The component you are left with is the palm rest. 3. Replace the palm rest. 4. Install the: a) b) c) d) e) f) g) h) i) j) k) l) Touchpad buttons Keyboard assembly System board Display assembly LED board Speaker Heat sink WLAN card WWAN card PCIe SSD Battery Base cover 5. Follow the procedure in After working inside your computer.
3 Technology and components This chapter details the technology and components available in the system. Topics: • • • • HDMI 1.4 USB features USB Type-C Thunderbolt over USB Type-C HDMI 1.4 This topic explains the HDMI 1.4 and its features along with the advantages. HDMI (High-Definition Multimedia Interface) is an industry-supported, uncompressed, all-digital audio/video interface.
Table 2. USB evolution Type Data Transfer Rate Category Introduction Year USB 2.0 480 Mbps High Speed 2000 USB 3.0/USB 3.1 Gen 1 5 Gbps Super Speed 2010 USB 3.1 Gen 2 Super Speed 2013 10 Gbps USB 3.0/USB 3.1 Gen 1 (SuperSpeed USB) For years, the USB 2.0 has been firmly entrenched as the de facto interface standard in the PC 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.
Similarly, USB 3.0/USB 3.1 Gen 1 connections will never achieve 4.8Gbps. We will likely see a real-world maximum rate of 400MB/s with overheads. At this speed, USB 3.0/USB 3.1 Gen 1 is a 10x improvement over USB 2.0. Applications USB 3.0/USB 3.1 Gen 1 opens up the laneways and provides more headroom for devices to deliver a better overall experience.
USB Type-C and USB 3.1 USB 3.1 is a new USB standard. USB 3's theoretical bandwidth is 5 Gbps, while USB 3.1 Gen2 is10Gbps . That's double the bandwidth, as fast as a first-generation Thunderbolt connector. USB Type-C isn't the same thing as USB 3.1. USB Type-C is just a connector shape, and the underlying technology could just be USB 2 or USB 3.0. In fact, Nokia's N1 Android tablet uses a USB Type-C connector, but underneath it's all USB 2.0 — not even USB 3.0.
4 System specifications Topics: • • Technical specifications Keyboards Hot Key Definitions Technical specifications This topic lists out the technical specifications. Table 3.
Type Feature Power adapter • • • Connectivity Microsoft Modern Standby compliant 45 W adapter, USB Type-C 65 W adapter, USB Type-C 90 W adapter, USB Type-C WiFi Display (Miracast) 14 Wireless LAN Options: • • • Qualcomm QCA61x4A 802.11ac Dual Band (2x2) Wireless Adapter + Bluetooth 4.1 (non vPro) Qualcomm QCA6174A Extended Range 802.11 ac MU-MIMO Dual Band (2x2) Wi-Fi + Bluetooth 4.1 Intel Dual-Band Wireless-AC 8265 Wi-Fi + BT 4.2 Wireless Card (2x2).
Type Feature Input device • • • • • 10-Finger Touch Display 4 microphones available with standard bezel Headset/Mic combo jack Integrated ISO Keyboard Active Pen (Optional, sold separately) Docking option • • • Dell Business Dock Dell Business Dock with Monitor stand Dell Business Thunderbolt Dock * TCG certification (February 2018) Keyboards Hot Key Definitions Table 4.
5 System setup System setup enables you to manage your notebook hardware and specify BIOS level options.
Navigation keys NOTE: For most of the System Setup options, changes that you make are recorded but do not take effect until you restart the system. Keys Navigation Up arrow Moves to the previous field. Down arrow Moves to the next field. Enter Selects a value in the selected field (if applicable) or follow the link in the field. Spacebar Expands or collapses a drop-down list, if applicable. Tab Moves to the next focus area. Esc Moves to the previous page until you view the main screen.
Option Description • • Date/Time Always Never Allows you to change the date and time. System Configuration screen options Option Description SATA Operation Allows you to configure the internal SATA hard-drive controller. The options are: • • • Drives Disabled AHCI RAID On: This option is enabled by default. Allows you to configure the SATA drives on board. All drives are enabled by default. The options are: • • • SATA-2 — enabled by default M.2 PCIe SSD-0 — enabled by default M.
Option Description Audio This field enables or disables the integrated audio controller. By default, the Enable Audio option is selected. The options are: • • Keyboard Illumination Enable Microphone—enabled by default Enable Internal Speaker—enabled by default This field lets you choose the operating mode of the keyboard illumination feature. The keyboard brightness level can be set from 0% to 100%.
Secure Boot screen options Option Description Secure Boot Enable This option enables or disables the Secure Boot Enable • • Disabled - by default Enabled Default setting: disabled.
Option Description HyperThread Control Allows you to enable or disable the Hyper-Threading in the processor. • • Disabled Enabled Default setting: Enabled is selected. Power management screen options Option Description AC Behavior Allows you to enable or disable the computer from turning on automatically when an AC adapter is connected. Default setting: Wake on AC is not selected.
Option Description • • • • Standard—Fully charges your battery at a standard rate. ExpressCharge—The battery charges over a shorter time using Dell’s fast charging technology. Primarily AC use Custom If Custom Charge is selected, you can also configure Custom Charge Start and Custom Charge Stop. NOTE: All charging mode may not be available for all the batteries. To enable this option, disable the Advanced Battery Charge Configuration option. Type-C connector power • • 7.
Manageability Option Description USB provision Enable USB provision is not selected by default MEBX Hotkey — Allows you to specify whether the MEBx Hotkey function should enable, during the system boot. enabled by default • Disabled • Enabled Default setting: Disabled Virtualization support Option Description Virtualization This field specifies whether a virtual Machine Monitor (VMM) can utilize the conditional hardware capabilities provided by Intel Virtualization Technology.
Maintenance screen Option Description Service Tag Displays the Service Tag of your computer. Asset Tag Allows you to create a system asset tag if an asset tag is not already set. This option is not set by default. BIOS Downgrade This controls flashing of the system firmware to previous revisions. Option 'Allow BIOS downgrade' is enabled by default. Data Wipe This field allows users to erase the data securely from all internal storage devices. Option 'Wipe on Next boot' is not enabled by default.
11. Click Save to save the file on your computer. 12. Click Run to install the updated BIOS settings on your computer. Follow the instructions on the screen. NOTE: It is recommended not to update the BIOS version for more than three revisions. For example: If you want to update the BIOS from 1.0 to 7.0, then install version 4.0 first and then install version 7.0.
Flashing the BIOS from the F12 One-Time boot menu Updating your system BIOS using a BIOS update .exe file copied to a FAT32 USB key and booting from the F12 one time boot menu. BIOS Update You can run the BIOS update file from Windows using a bootable USB key or you can also update the BIOS from the F12 One-Time boot menu on the system.
4. Select external USB device 5. Once the file is selected, Double click the flash target file, then press submit .
6. Click the Update BIOS then system will reboot to flash the BIOS. 7. Once complete, the system will reboot and the BIOS update process is completed. System and setup password Table 5. System and setup password Password type Description System password Password that you must enter to log on to your system. Setup password Password that you must enter to access and make changes to the BIOS settings of your computer. You can create a system password and a setup password to secure your computer.
NOTE: System and setup password feature is disabled. Assigning a system setup password You can assign a new System or Admin Password only when the status is in Not Set. To enter the system setup, press F2 immediately after a power-on or re-boot. 1. In the System BIOS or System Setup screen, select Security and press Enter. The Security screen is displayed. 2. Select System/Admin Password and create a password in the Enter the new password field.
6 Software This chapter details the supported operating systems along with instructions on how to install the drivers.
Intel chipset drivers Verify if the Intel chipset drivers are already installed in the system. Table 7. Intel chipset drivers Before Installation After Installation Video driver Verify if the video driver is already installed in the system. Audio driver Verify if audio drivers are already installed in the system.
Table 8. Audio driver Before Installation After Installation Network drivers Install the WLAN and Bluetooth drivers from the Dell support site. Table 9. Network drivers Before Installation After Installation USB driver Verify if the USB drivers are already installed in the system. Table 10. USB driver Before Installation After Installation Storage drivers Verify if the storage controller drivers are installed in the system. Table 11.
Table 12. Battery drivers Before Installation After Installation Intel HID Event Filter Verify if the Intel HID event filter is already installed in the computer. Table 13. Intel HID Event Filter Before Installation After Installation Intel Dynamic Platform and Thermal Framework Verify if the Intel dynamic platform and thermal framework is already installed in the computer.
Table 14. Intel Dynamic Platform and Thermal Framework After Installation Intel Management engine Verify if the Intel dynamic platform and thermal framework is already installed in the computer. Table 15. Intel management engine interface Before Installation After Installation Disk drivers Disk drivers installed in the system Table 16. Storage drivers Before Installation After Installation None Bluetooth drivers This platform supports a variety of Bluetooth drivers.
Table 17. Bluetooth drivers Before Installation After Installation Security drivers This section lists the security devices in the Device Manager. Security device drivers Verify if the security device drivers are installed in the computer. Fingerprint sensor drivers Verify if the Fingerprint sensor drivers are installed in the computer.
7 Troubleshooting Dell Enhanced Pre-Boot System Assessment — ePSA Diagnostic 3.0 You can invoke the ePSA diagnostics by either of the following ways : • • Press the F12 key when the system posts and choose ePSA or Diagnostics option on One Time Boot Menu. Press and hold Fn(Function key on keyboard) and Power On (PWR) the system. Real Time Clock reset The Real Time Clock (RTC) reset function allows you to recover your Dell system from No POST/No Boot/No Power situations.
8 Contacting Dell 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. 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: 1. Go to Dell.com/support. 2. Select your support category. 3.
