Dell Latitude 7220 Rugged Extreme Tablet Service Manual
Dell Latitude 7220 Rugged Extreme Tablet Manual
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- Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 1
Latitude 7220 Rugged Extreme Tablet Service Manual Regulatory Model: T03H Regulatory Type: T03H003 - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 2
of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2019 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 - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 3
Contents 1 Working on your tablet...6 Safety instructions...6 Before working inside your tablet...6 Safety precautions...7 Electrostatic discharge-ESD protection...7 ESD field service kit ...8 Transporting sensitive components...8 After working inside your tablet...9 2 Major components of your - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 4
serial port and power connector port 58 Docking Board...60 Removing the docking board...60 Installing the docking board...61 Smart card reader and 73 Power management...74 POST behavior...75 Manageability...76 Virtualization support...76 Wireless...77 Maintenance screen...77 System logs...77 - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 5
flash drive 79 Updating the Dell BIOS in Linux and Ubuntu environments 79 Flashing the BIOS from the F12 One-Time boot menu 79 System and setup password...82 Assigning a system setup password...83 Deleting or changing an existing system setup password 83 5 Troubleshooting...84 Enhanced Pre-Boot - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 6
you follow the Safety Instruction. 2. Ensure that your work surface is flat and clean to prevent the tablet cover from being scratched. 3. Turn off your tablet. 4. If the tablet is connected to a docking device (docked) such as the mobile keyboard or a docking station, undock it. 5. Disconnect your - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 7
instructions. ESD field service kit when working inside any tablet to avoid obvious, such as intermittent problems or a shortened product Dell products, the sensitivity to static damage is now higher than in previous Dell of damage to recognize and troubleshoot is the intermittent (also called - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 8
service service parts Use only Field Service kits with prior to each service call, and Service the new part new Dell service technicians use the traditional wired ESD grounding wrist strap and protective anti-static mat at all times when servicing Dell muscles. Abdominal muscles support your spine when - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 9
. CAUTION: To avoid damage to the tablet, use only the battery that is designed for this particular Dell tablet. Do not use batteries that are designed for other Dell tablets. Steps 1. Connect any external devices, such as a mobile keyboard or a docking station, and replace any cards, such as an - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 10
2 10 Major components of your system - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 11
Major components of your system Major components of your system 11 - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 12
back) 14. Microphone assembly circuit board 15. System fan 16. Solid-state drive 17. Front camera cable 18. Front camera cover 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 - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 13
require the following tools: • Phillips #0 screwdriver • Phillips #1 screwdriver • Philips #2 screwdriver • Plastic scribe NOTE: The #0 screw driver is for screws 0-1 and the #1 screw driver is for screws 2-4. Screw list NOTE: When removing screws from a component, it is recommended to note the - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 14
during the servicing of this support for assistance. See www.dell.com/contactdell. • Always purchase genuine batteries from www.dell.com or authorized Dell partners and resellers. Removing the batteries Prerequisites 1. Follow the procedure in before working inside your tablet. NOTE: This tablet - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 15
2. Slide the latch down to unlock the battery. 3. Lift the battery out of the battery bay. 4. Remove the battery from the tablet. Installing the batteries Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task NOTE - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 16
Align the pins on the battery with the connector on the tablet. NOTE: Ensure that the metal pin of the battery is locked state. Next steps 1. Follow the procedure in after working inside your tablet. Subscriber Identification Module (SIM) card Removing the uSIM Prerequisites 1. Follow the procedure - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 17
About this task The figure indicates the location of the uSIM and provides a visual representation of the removal procedure. Steps 1. Open the uSIM slot cap. 2. Press the uSIM card and slide it out of the slot. NOTE: Use a flat pointed scribe to ease removing the SIM. Inserting the uSIM - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 18
state. Next steps 1. Install the batteries. 2. Follow the procedure in after working inside your tablet. Stylus Removing the stylus Prerequisites 1. Follow the procedure in before working inside your tablet. About this task The figure indicates the location of the stylus and provides a visual - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 19
Steps Slide the stylus upward using the groove on the stylus pen. NOTE: Avoid pulling the stylus with the stretchable thread. The stylus is ready to assist you in using the rugged tablet. Installing the stylus Prerequisites If you are replacing a component, remove the existing component before - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 20
from its groove. Next steps 1. Follow the procedure in after working inside your tablet. Display assembly Removing the display assembly Prerequisites 1. Follow the procedure in before working inside your tablet. 2. Remove the batteries. About this task The figure indicates the location of the - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 21
Removing and installing components 21 - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 22
22 Removing and installing components - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 23
on a flat and clean surface and remove the 19 (M2.5x5) screws that secure the display assembly to the chassis. 2. Flip the tablet. 3. Using a plastic scribe, gently pry the edges evenly to unlock the plastic clips that secure the display assembly to the chassis. NOTE: Tip of the - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 24
About this task The figure indicates the location of the component and provides a visual representation of the installation procedure. 24 Removing and installing components - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 25
Removing and installing components 25 - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 26
of the display assembly to secure it to the chassis. 6. Flip the tablet. NOTE: Ensure to place the tablet on a flat surface. 7. Replace the 19 (M2.5x5) screws that several incorrect combinations which leads to RDs. During a service incident, technicians must note the function keys button layout - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 27
Removing the function keys Prerequisites 1. Follow the procedure in before working inside your tablet. 2. Remove the batteries. 3. Remove the display assembly. About this task The figure indicates the location of the function keys and provides a visual representation of the - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 28
Installing the function keys Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The figure indicates the location of the function keys and provides a visual representation of the installation procedure. Steps - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 29
Heat sink Removing the heat-sink Prerequisites 1. Follow the procedure in before working inside your tablet. 2. Remove the batteries. 3. Remove the display assembly. About this task The figure indicates the location of the heat sink and provides a visual representation of the - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 30
NOTE: Ensure not to bend the heatsink pipe while removing the heatsink from the SSD. Do not remove the heatsink by pulling on the pipe. Carefully pry the cover from the SSD using a plastic scribe. 2. Lift the heat-sink away from the system board. Installing the heat-sink Prerequisites If you are - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 31
system fan Prerequisites 1. Follow the procedure in before working inside your tablet. 2. Remove the batteries. 3. Remove the display assembly. 4. Remove of the removal procedure. Steps 1. Unroute the cable from the routing guide on the system fan. 2. Disconnect the system fan cable from the - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 32
fan to the chassis. 3. Connect the system fan cable to the connector on the system board. 4. Route the system fan cable through the routing guide on the system fan. Next steps 1. Install the heat-sink. 2. Install the display assembly. 3. Install the batteries. 32 Removing and installing components - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 33
-state drive slot on the system board. Removing the M.2 2280 solid-state drive Prerequisites 1. Follow the procedure in before working inside your tablet. 2. Remove the batteries. 3. Remove the display assembly. 4. Remove the heat-sink. About this task The figure indicates the location of the solid - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 34
1. Install the heat-sink. 2. Install the display assembly. 3. Install the batteries. 4. Follow the procedure in after working inside your tablet. Installing the M.2 2280 solid-state drive Prerequisites If you are replacing a component, remove the existing component before performing the installation - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 35
batteries. 4. Follow the procedure in after working inside your tablet. WLAN card Removing the WLAN card Prerequisites 1. Follow the procedure in before working inside your tablet. 2. Remove the batteries. 3. Remove the display assembly. About - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 36
Steps 1. Remove the screw (M2x3) that secures the WLAN card bracket to the WLAN card. 2. Remove the WLAN card bracket from the WLAN card. 3. Disconnect the antenna cables from the WLAN card. 4. Slide and remove the WLAN card from the WLAN card slot. Installing the WLAN card Prerequisites If you are - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 37
antenna cables to the WLAN card. The following table provides the antenna-cable color scheme for the WLAN card that is supported by your tablet. Table 2. Connectors on the wireless card Antenna Cable Color Main (white triangle) White Auxiliary (black triangle) Black 3. Place the WLAN card - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 38
WWAN card Removing the WWAN card Prerequisites 1. Follow the procedure in before working inside your tablet. 2. Remove the batteries. 3. Remove the display assembly. About this task The figure indicates the location of the WWAN card and provides a visual representation of the - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 39
antenna cables to the WWAN card. The following table provides the antenna-cable color scheme for the WWAN card that is supported by your tablet. Table 3. Connectors on the wireless card Antenna Cable Color Main (white triangle) White Auxiliary (black triangle) Black 3. Place the WWAN card - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 40
) that secures the integrated microphone assembly circuit board to the system board. 2. Release the microphone assembly and, lift the microphone from the tablet chassis. NOTE: NEVER pull the microphone by the cable. In case the circuit board is not released smoothly, push from below the microphone - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 41
batteries. 3. Follow the procedure in after working inside your tablet. Front camera Removing the front camera Prerequisites 1. Follow the procedure in before working inside your tablet. 2. Remove the batteries. 3. Remove the display assembly. - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 42
42 Removing and installing components - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 43
angle not more than 35° and push upward to release the camera lens case. 8. Remove the camera circuit board away from the tablet chassis. Installing the front camera Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 44
44 Removing and installing components - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 45
screw hole. 5. Place the camera lens case to the camera placeholder. 6. Replace the screw (M2x3) to secure the front camera circuit board on the tablet chassis. 7. Slide the lens shutter in the lens channel and push towards left. Next steps 1. Install the display assembly. 2. Install the batteries - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 46
NOTE: Removing the coin-cell battery resets the BIOS setup programs settings to default. It is recommended that you note the BIOS setup programs settings before removing the coin-cell battery. About this task The figure indicates the location of the coin-cell battery and provides a visual - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 47
cable to the connector on the system board. Next steps 1. Install the display assembly. 2. Install the batteries. 3. Follow the procedure in after working inside your tablet. System board Removing the system board Prerequisites 1. Follow the procedure in before working inside your - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 48
4. Remove the heat-sink. 5. Remove the system fan. 6. Remove the solid-state drive. 7. Remove the WLAN. 8. Remove the WWAN. About this task The figure indicates the location of the system board and provides a visual representation of the removal procedure. 48 Removing and installing components - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 49
Removing and installing components 49 - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 50
50 Removing and installing components - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 51
under the grommet. 14. Remove the three (M2x5) screws and two (M1.6x5) screws to remove the bracket that secures the system board to the tablet chassis. 15. Disconnect the power adapter cable and remove the (M2x5) screw that secures the system board to the - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 52
Installing the system board Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The figure indicates the location of the system board and provides a visual representation of the installation procedure. 52 - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 53
Removing and installing components 53 - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 54
Steps 1. Place the system board on the tablet chassis. 54 Removing and installing components - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 55
chassis. 11. Connect the power adapter cable and replace the (M2x5) screw that secures the system board to the tablet chassis. 12. Connect the following cables to their connector on the system board (L-R): microphone board, LTE main + p-sensor, mic, smartcard, fingerprint reader, microSD card, NFC - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 56
Steps 1. Peel the copper adhesive tape and remove the three (M2x5) screws that secure the rear camera circuit board on the tablet chassis. 2. Remove the back camera board cable from the chassis. Installing the rear camera Prerequisites If you are replacing a component, remove the existing component - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 57
9. Install the heat-sink. 10. Install the display assembly. 11. Install the batteries. 12. Follow the procedure in after working inside your tablet. Micro serial port and power connector port Removing micro serial port and power connector port Prerequisites 1. Follow the procedure in before working - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 58
Steps 1. Disconnect the DC-in cable from the connector and remove the (M2x5) screw that secures the system board to the system chassis. 2. Lift the latch, and disconnect the micro serial port cable from the connector. 3. Remove the four (M2x5) screws and two (M1.6x5) screws that secure the metal - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 59
secures the system board to the system chassis. Next steps 1. Install the display assembly. 2. Install the batteries. 3. Follow the procedure in after working inside your tablet. Removing and installing components 59 - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 60
Board Removing the docking board Prerequisites 1. Follow the procedure in before working inside your tablet. 2. Remove the batteries. 3. Remove the display assembly. 4. Remove the heat-sink. 5. Remove the system fan. 6. Remove the solid-state drive. 7. Remove the WLAN. 8. Remove the - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 61
The figure indicates the location of the docking board and provides a visual representation of the installation procedure. Steps 1. Connect the docking board cable to the connector. NOTE batteries. 12. Follow the procedure in after working inside your tablet. Removing and installing components 61 - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 62
daughterboard Prerequisites 1. Follow the procedure in before working inside your tablet. 2. Remove the batteries. 3. Remove the display assembly. 4. the coin-cell battery. 12. Remove the system board. 13. Remove the docking board. About this task The figure indicates the location of the smart card - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 63
Removing and installing components 63 - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 64
Steps 1. Flip and disconnect the smart card reader cable from the connector. 2. Remove the two (M2x5) screws that secure the wireless passthrough daughterboard to the system chassis. 3. Remove the copper adhesive shield, and lift the wireless passthrough daughterboard away from the system. 4. Remove - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 65
Removing and installing components 65 - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 66
reader cable to the connector. 6. Flip the smart card reader cable. Next steps 1. Install the docking board. 2. Install the system board. 3. Install the coin-cell battery. 4. Install the front 13. Follow the procedure in after working inside your tablet. 66 Removing and installing components - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 67
4 System setup CAUTION: Unless you are an expert computer user, do not change the settings in the BIOS Setup program. Certain changes can make your computer work incorrectly. NOTE: Before you change BIOS Setup program, it is recommended that you write down the BIOS Setup program screen information - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 68
example: optical drive or hard drive). During the Power-on Self-Test (POST), when the Dell logo appears, you can: • Access System Setup by pressing F2 key • Bring up the Displays BIOS Version, Service Tag, Asset Tag, Ownership Tag, Manufacture Date, Ownership Date, and the Express Service Code. • - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 69
USB controller for: • Enable USB Boot Support • Enable External USB Port All the options keyboard illumination feature. The keyboard brightness level can be set from 25% to 100%. The options are: • Disabled • Level is 25% • Level is 50% • Level is 75% • Level is 100%-enabled by default Tablet - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 70
The Keyboard Backlight Timeout dims out with AC option. The main keyboard illumination feature is not affected. Keyboard Illumination will continue to support the • Touchscreen (selected by default) This option configures the Dell Stealth Mode feature: Checking 'Enable Stealth Mode' enables this - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 71
UEFI capsule update packages. This option is selected by default. Disabling this option will block BIOS updates from services such as Microsoft Windows Update and Linux Vendor Firmware Service (LVFS) Allows you to control whether the Trusted Platform Module (TPM) is visible to the operating system - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 72
Keyboard of the optional Absolute Persistence Module service from Absolute Software. • Enabled by default. Allows you to disable master password support Hard Disk passwords need to be cleared before Boot to allow evaluation or enforcement of UEFI driver signatures. • Deployed Mode (default) • Audit - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 73
Memory Size Click one of the following options: • 32 MB • 64 MB • 128 MB-Default Performance Table 9. Performance Option Multi Core Support Intel SpeedStep C-States Control Intel TurboBoost Description This field specifies whether the process has one or all cores enabled. The performance of some - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 74
• Every Day • Weekdays • Select Days Default setting: Disabled USB Wake Support Allows you to enable USB devices to wake the system from Standby. NOTE all the USB ports to conserve battery power. • Enable Wake on Dell USB-C Dock Wake on LAN Allows you to enable or disable the feature that powers - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 75
the Advanced Battery Charge Configuration option. Dock Battery Charger Mode Allows you to select The battery charges over a shorter time using Dell's fast charging technology. Type-C Connector This enable the keypad that is embedded in the internal keyboard. • Fn Key Only-enabled by default • By - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 76
. • 5 seconds • 10 seconds • Enable Full Screen Logo-not enabled • Enable Tablet Button LED Sign of Life-enabled by default • Prompt on warnings and errors-enabled by • Enable MEBx hotkey-enabled by default Virtualization support Option Description Virtualization This field specifies whether a - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 77
internal Contactless Smartcard/NFC device Maintenance screen Option Service Tag Asset Tag BIOS Downgrade Data Wipe BIOS Recovery Description Displays the Service Tag of your computer. Allows you to SupportAssist System Resolution Console and for Dell OS recovery tool. • OFF •1 System setup 77 - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 78
2. Go to Dell.com/support. • Enter the Service Tag or Express Service Code and click Submit. • Click Detect Product and follow the instructions on screen. and the Product Support page of your computer appears. 6. Click Get drivers and click Drivers and Downloads. The Drivers and Downloads section - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 79
Update Utility will load, follow the instructions on screen. Figure 1. DOS BIOS Update Screen Updating the Dell BIOS in Linux and Ubuntu environments system BIOS in a Linux environment such as Ubuntu, see https://www.dell.com/support/article/sln171755/. Flashing the BIOS from the F12 One-Time boot - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 80
will need: • USB key formatted to the FAT32 file system (key does not have to be bootable) • BIOS executable file that you downloaded from the Dell Support website and copied to the root of the USB key • AC power adapter connected to the system • Functional system battery to flash the BIOS Perform - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 81
4. Select external USB device 5. Once the file is selected, Double click the flash target file, then press submit . System setup 81 - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 82
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 12. System and setup password Password type System password Setup password Description Password that you must - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 83
space 3. Type the system password that you entered earlier in the Confirm new password field and click OK. 4. Press Esc and a message prompts you NOTE: If you change the System and/or Setup password, re-enter the new password when prompted. If you delete the System and/or Setup password, confirm - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 84
5 Troubleshooting Enhanced successfully • View error messages that inform you of problems encountered during testing NOTE: Some tests for specific devices 2. As the computer boots, press the F12 key as the Dell logo appears. 3. If no keyboard attached, Press and hold the volume up key to access the - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 85
website to troubleshoot and fix your computer when it fails to boot into their primary operating system due to software or hardware failures. For more information about the Dell SupportAssist OS Recovery, see Dell SupportAssist OS Recovery User's Guide at www.dell.com/ support. Troubleshooting 85 - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 86
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. Steps 1. Turn off your computer. 2. Turn off the modem - Dell Latitude 7220 Rugged Extreme Tablet | Service Manual - Page 87
. 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. Go to Dell.com/support. 2. Select your support category. 3. Verify your country or region in the Choose a Country
Latitude 7220 Rugged Extreme Tablet
Service Manual
Regulatory Model: T03H
Regulatory Type: T03H003