Dell Latitude 7390 2-in-1 Скачать руководство пользователя страница 9

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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.

Remove the base cover

Removing and installing components

Содержание Latitude 7390 2-in-1

Страница 1: ...Latitude 7390 2 in 1 Owner s Manual Regulatory Model P29S Regulatory Type P29S002 ...

Страница 2: ... 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 Copyright 2018 Dell Inc or its subsidiaries All rights reserved Dell EMC and other trademarks are trademarks of Dell Inc or its subsidiaries Other trademarks may be trademarks of their respective owners 2018 01 Rev A01 ...

Страница 3: ... advanced power management features Unplugging pressing and holding the power button for 15 seconds should discharge residual power in the system board notebooks Bonding Bonding is a method for connecting two or more grounding conductors to the same electrical potential This is done through the use of a field service electrostatic discharge ESD kit When connecting a bonding wire ensure that it is ...

Страница 4: ...and bonding wire can be either directly connected between your wrist and bare metal on the hardware if the ESD mat is not required or connected to the anti static mat to protect hardware that is temporarily placed on the mat The physical connection of the wrist strap and bonding wire between your skin the ESD mat and the hardware is known as bonding Use only Field Service kits with a wrist strap m...

Страница 5: ...uter if available CAUTION If your computer has an RJ45 port disconnect the network cable by first unplugging the cable from your computer 5 Disconnect your computer and all attached devices from their electrical outlets 6 Open the display 7 Press and hold the power button for few seconds to ground the system board CAUTION To guard against electrical shock unplug your computer from the electrical o...

Страница 6: ... 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 following tools Phillips 0 screwdriver Phillips 1 screwdriver Plastic scribe NOTE The 0 screw driver is for screws 0 1 and the 1 screw driver is for screws 2 4 2 6 Removing and installing...

Страница 7: ...inge bracket to Cover 6 G sensor to Cover 1 Lcm frame down to Cover 2 Hinge bracket to Low 4 Power Board 2 LED Board 2 Fingerprint bracket 1 Touchpad button 2 Smart Card 2 K B to K B plate 6 K B plate 13 Bottom Door Assy 8 System board 6 Fan 1 1 Thermal 4 Battery 4 WLAN 1 WWAN 1 EDP Bracket 2 USB Type C 2 Micro Secure Digital Card Removing and installing components 7 ...

Страница 8: ... 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 If a micro SIM card is available remove the micro SIM card from the micro SIM card tray Replacing SIM card 1 Insert a paperclip or a SIM card removal tool ...

Страница 9: ...se 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 Remove the base cover Removing and installing components 9 ...

Страница 10: ...r Battery 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 98 x 4 L screws that secure the batt...

Страница 11: ... both cards if equipped 5 Follow the procedure in After working inside your computer PCIe Solid State Drive SSD Removing the NVMe 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 NVMe SSD card a Loosen the 2 M2 0 x 3 0 scr...

Страница 12: ...SSD thermal plate 4 Install the a Battery b Base cover c SIM card tray d MicroSD card NOTE To install both cards if equipped 5 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 a MicroSD card b SIM card tray NOTE To remove both cards if equipped and no need to remove the blank filler c ...

Страница 13: ...connector on the system board 2 Connect the WLAN cables to the connectors on the WLAN card 3 Place the wireless card bracket and replace 1 M2 0 x 3 0 screw to secure WLAN card to the computer 4 Install the a Battery b Base cover c SIM card tray d MicroSD card NOTE To install both cards if equipped 5 Follow the procedure in After working inside your computer WWAN card Removing the WWAN card 1 Follo...

Страница 14: ...rd 3 d Lift the WWAN card from the computer 4 Installing the WWAN card 1 Insert the WWAN card into the connector on the system board 2 Connect the WWAN cables to the connectors on the WWAN card 3 Place the metal bracket and replace the M2 0 x 3 0 screw to secure the WLAN card to the computer 4 Install the a Battery b Base cover c SIM card tray d MicroSD card NOTE To install both cards if equipped ...

Страница 15: ...tery 1 b Disconnect the power daughter board cable from the system board 2 c Remove the 2 M2X3 screws securing the power board in place 3 d Lift the power board from the computer 4 Installing the power board 1 Place the power board by aligning it to the screw holes 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 syst...

Страница 16: ...d to remove the blank filler c Base cover d Battery e Power board 3 To disconnect the cables a Disconnect and fold back the smart card cable from the USH board 1 b Disconnect and fold back the LED daughter board FFC from the LED daughter board for easy access in removing the speaker module 2 4 To release the speaker module a Disconnect the speaker cable from the connector on the system board 1 b U...

Страница 17: ...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 Removing and installing components 17 ...

Страница 18: ...llow the procedure in After working inside your computer Smart Card Cage Removing the smart card cage NOTE Always remove the smart card from the smart card reader 1 Follow the procedure in Before working inside your computer 2 Remove a Micro SD b SIM card tray NOTE To remove both cards if equipped and no need to remove the blank filler c Base cover d Battery e SSD card 3 To disconnect the cables a...

Страница 19: ...emove 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 Removing and installing components 19 ...

Страница 20: ...the procedure in Before working inside your computer 2 Remove a Micro SD 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 fingerprint reader board a Lift the coin cell battery affixed to the speaker cables 1 b Disconnect the finger print reader cables from the fingerprint reader board and the USH board 2 NOTE The ca...

Страница 21: ...d the USH board 5 Affix the coin cell battery on the speaker cable 6 Install the a Battery b Base cover c SIM card tray d MicroSD card NOTE To install both cards if equipped 7 Follow the procedure in After working inside your computer LED Board Removing the LED board 1 Follow the procedure in Before working inside your computer 2 Remove a Micro SD b SIM card tray NOTE To remove both cards if equip...

Страница 22: ...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 Install the a Battery b Base cover c SIM card tray d MicroSD card NOTE To install both cards if equipped 6 Follow the procedure in After working inside your co...

Страница 23: ...3 0 screws that secure the heat sink to the system board 3 d 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 0 screws to secure the heat sink to the system board NOTE Tighten the screws on the system board in the order of the callout numbers 1 2 3 4 as indicated on the hea...

Страница 24: ... cards if equipped and no need to remove the blank filler c Base cover d Battery e WLAN card f 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 IR camera and touchscreen cable 1 b Remove the 2 M 2 x 1 7L screws that secure the eDP bracket and lift it away from the computer 2 c Disconnect the eDP cable from...

Страница 25: ...isplay assembly a Place the base of the computer with the display assembly NOTE To open 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 Removing and installing components 25 ...

Страница 26: ...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 Affix the tapes to secure the antenna cables to the system board 8 Install the a WWAN card b WLAN card c Battery d Base cover e SIM card tray f MicroSD card NOTE To install both cards if equipped 9 Follow the...

Страница 27: ...ard f WLAN card g WWAN card h Heatsink assembly 3 Disconnect the a IR camera and touchscreen cable 1 b Remove the 2 M 2 x 1 7L screws that secure the eDP bracket and lift it away from the computer 2 c Disconnect the eDP cable from the system board 3 d Disconnect th G sensor and eDP cables 4 4 Disconnect the following cables from the system board a Touchpad cable b USH cable c LED board cable Remov...

Страница 28: ...l 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 28 Removing and installing components ...

Страница 29: ...ews securing the USB Type C bracket 1 b Lift the USB Type C bracket from the Type C module 2 c Remove the 6 M2 0 x 3 0 screws that secure the system board to the computer 3 d Lift the system board away from the computer 4 Removing and installing components 29 ...

Страница 30: ... a requirement 9 Install the a Heatsink module Connect the following cables from the system board 1 LED board cable 2 USH cable 3 Touchpad cable b Connect the G sensor and eDP cable c Place the eDP bracket on the eDP cable and replace the 2 M2 x 1 7L screw on the bracket d Connect the IR camera and touch screen cables e WWAN card f WLAN card g SSD card h Battery i Base cover j SIM card tray k Micr...

Страница 31: ...rd tray i 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 Keyboard Removing keyboard assembly NOTE The keyboard and the keyboard tray together are called the keyboard assembly 1 Follow the procedure in Before working inside your ...

Страница 32: ... System board 3 disconnect and peel back the cables and SSD thermal pad a Touchpad and USH board cable 1 b LED board cable 2 c SSD thermal pad 3 d 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 32 Removing and installing components ...

Страница 33: ...ing 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 Removing and installing components 33 ...

Страница 34: ...ce the 13 M2 0 x 3 0 screws that secure the keyboard to the chassis 3 Affix and connect the keyboard and the backlit keyboard cables to the keyboard 4 Affix the LED board cable on the keyboard 5 Affix the SSD thermal pad on the SSD module NOTE If your computer has a WWAN card then SIM card tray installation is a requirement 6 Install the a System baord b Heatsink module c WWAN card d WLAN card e S...

Страница 35: ...em board j Keyboard 3 Removing the touchpad buttons a Disconnect the touchpad cable 1 b Remove the tape that secures the touch buttons to the system board 2 c Remove the 2 M2 x 3 screws that secure the touchpad buttons 3 d Lift the touchpad buttons from the computer 4 Installing the touchpad 1 Place the touchpad buttons into the slot 2 Replace the 2 M2xL3 screws that secure touchpad buttons Removi...

Страница 36: ...over 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 Remove the a Base cover b Battery c SSD module d WLAN card e WWAN card f Heat sink assembly g Speaker h LED board i Display assembly j System board k Keyboard l Touchpad buttons 36 Removing and installing components ...

Страница 37: ... Install the a Touchpad buttons b Keyboard assembly c System board d Display assembly e LED board f Speaker g Heat sink h WLAN card i WWAN card j PCIe SSD k Battery l Base cover 5 Follow the procedure in After working inside your computer Removing and installing components 37 ...

Страница 38: ...s 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 picture settings based on content type Additional Color Spaces Adds support for additional color models used in digital photography and computer graphics 4K Support Enabl...

Страница 39: ...wer hungry devices New power management features Full duplex data transfers and support for new transfer types Backward USB 2 0 compatibility New connectors and cable The topics below cover some of the most commonly asked questions regarding USB 3 0 USB 3 1 Gen 1 Speed Currently there are 3 speed modes defined by the latest USB 3 0 USB 3 1 Gen 1 specification They are Super Speed Hi Speed and Full...

Страница 40: ...previously weren t USB territory like external RAID storage systems Listed below are some of the available SuperSpeed USB 3 0 USB 3 1 Gen 1 products External Desktop USB 3 0 USB 3 1 Gen 1 Hard Drives Portable USB 3 0 USB 3 1 Gen 1 Hard Drives USB 3 0 USB 3 1 Gen 1 Drive Docks Adapters USB 3 0 USB 3 1 Gen 1 Flash Drives Readers USB 3 0 USB 3 1 Gen 1 Solid state Drives USB 3 0 USB 3 1 Gen 1 RAIDs Op...

Страница 41: ...is 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 y...

Страница 42: ...hunderbolt 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 2 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 betwee...

Страница 43: ...ipset Intel Kaby Lake U and R integrated with processor Graphics Intel Integrated HD Graphics 620 7th generation Intel core Intel Integrated UHD Graphics 620 8th generation Intel core Display 13 3 inches FHD 16 9 1920 x 1080 WVA Touch with Corning Gorilla Glass 4 Active Pen Support Anti Reflective and Anti Smudge 255 nits Storage options Primary Storage 128 GB M 2 2280 SATA SSD 256 GB M 2 2280 SAT...

Страница 44: ... X7 LTE A DW5811e for AT T Verzion Sprint US Dell Wireless Qualcomm Snapdragon X7 LTE A DW5811e EMEA APJ ROW Dell Wireless Qualcomm Snapdragon X7 LTE A DW5816e for Japan ANZ China Dell Wireless Qualcomm Snapdragon X7 HSPA DW5811e Indonesia Ports Slots and Chassis 1x USB 3 1 Gen 1 1x USB 3 1 Gen 1 with PowerShare 2 x DisplayPorts over USB Type C with optional Thunderbolt 3 HDMI 1 4 microSIM card sl...

Страница 45: ...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 Hot key combinations Fn Key Combination Function Fn ESC Fn Toggle Fn F1 Speaker Mute Fn F2 Volume Down Fn F3 Volume Up Fn F4 Mic Mute Fn F5 Num Lock Fn F6 Scroll Lock Fn F8 Display Toggle Win...

Страница 46: ...ess down Fn Key Mode Standard The F1 F12 keys behave as function keys Holding Fn is required to access their secondary functions Secondary 14 The F1 F12 keys control the secondary functions Fn is required to access the standard functions 46 System specifications ...

Страница 47: ...ent screen options POST behavior screen options Manageability Virtualization support screen options Wireless screen options Maintenance screen options System logs screen options Updating the BIOS in Windows System and setup password Boot menu Press F12 when the Dell logo appears to initiate a one time boot menu with a list of the valid boot devices for the system Diagnostics and BIOS Setup options...

Страница 48: ...your computer Option Description System Information This section lists the primary hardware features of your computer System Information Displays BIOS Version Service Tag Asset Tag Ownership Tag Manufacture Date Ownership Date Express Service Code the Signed Firmware update enabled by default Memory Information Displays Memory Installed Memory Available Memory Speed Memory Channels Mode Memory Tec...

Страница 49: ...abled by default The options are SATA 2 enabled by default M 2 PCIe SSD 0 enabled by default M 2 PCIe SSD 1 enabled by default SMART Reporting This field controls whether hard drive errors for integrated drives are reported during system startup This technology is part of the SMART Self Monitoring Analysis and Reporting Technology specification This option is disabled by default Enable SMART Repor...

Страница 50: ...ed by default Security level Secure connect is disabled Security level Display port only is disabled USB PowerShare This field configures the USB PowerShare feature behavior This option allows you to charge external devices using the stored system battery power through the USB PowerShare port This option is disabled by default Audio This field enables or disables the integrated audio controller By...

Страница 51: ...scellaneous Devices Allows you to enable or disable the following devices Enable Camera enabled by default Enable Secure Digital SD Card enabled by default Secure Digital SD Card Boot disabled by default Secure Digital SD Card Read Only Mode disabled by default Video screen options Option Description LCD Brightness Allows you to set the display brightness depending up on the power source On Batter...

Страница 52: ...option is enabled by default Allows you to enable or disable multi core support for the processor The installed processor supports two cores If you enable Multi Core Support two cores are enabled If you disable Multi Core Support one core is enabled Enable Multi Core Support Default setting The option is enabled Intel SpeedStep Allows you to enable or disable the Intel SpeedStep feature Enable Int...

Страница 53: ...er adapter is connected If the AC power adapter is removed during Standby the system setup removes power from all the USB ports to conserve battery power Enable USB Wake Support Wake on Dell USB C dock Default setting The option is disabled Wake on WLAN Allows you to enable or disable the feature that powers on the computer from the Off state when triggered by a LAN signal Disabled WLAN Default se...

Страница 54: ...pter Warnings Allows you to enable or disable the system setup BIOS warning messages when you use certain power adapters Default setting Enable Adapter Warnings Keypad Embedded Allows you to choose one of two methods to enable the keypad that is embedded in the internal keyboard Fn Key Only default By Numlock NOTE When setup is running this option has no effect Setup works in Fn Key Only mode Numl...

Страница 55: ...led Default setting Disabled Virtualization support screen options Option Description Virtualization This field specifies whether a virtual Machine Monitor VMM can utilize the conditional hardware capabilities provided by Intel Virtualization Technology Enable Intel Virtualization Technology enabled by default VT for Direct I O Enables or disables the Virtual Machine Monitor VMM from utilizing the...

Страница 56: ...ays 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 N...

Страница 57: ...port page of your computer appears 6 Click Get drivers and click Drivers and Downloads The Drivers and Downloads section opens 7 Click Find it myself 8 Click BIOS to view the BIOS versions 9 Identify the latest BIOS file and click Download 10 Select your preferred download method in the Please select your download method below window click Download File The File Download window appears 11 Click Sa...

Страница 58: ...ogo appears to display the One Time Boot Menu 5 Using arrow keys select USB Storage Device and click Return 6 The system will boot to a Diag C prompt 7 Run the file by typing the full filename e g O9010A12 exe and press Return 8 The BIOS Update Utility will load follow the instructions on screen Figure 2 DOS BIOS Update Screen Updating the Dell BIOS in Linux and Ubuntu environments If you want to ...

Страница 59: ...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 the following steps to execute the BIOS update flash process from the F12 menu CAUTION Do not power off the system during the BIOS update process Powering off the system could make the s...

Страница 60: ...exe file is shown as an example in the following screenshot The actual file name may vary 5 Once the file is selected it will show in the file selection box and you can click the OK button to continue 60 System setup ...

Страница 61: ...6 Click the Begin Flash Update button 7 A warning box is displayed asking you if you want to proceed Click the Yes button to begin the flash System setup 61 ...

Страница 62: ...ould take as long as 10 minutes Generally this process takes two to three minutes 9 Once complete the system will reboot and the BIOS update process is completed System and setup password You can create a system password and a setup password to secure your computer Password type Description System password Password that you must enter to log on to your system Setup password Password that you must ...

Страница 63: ...ck OK 4 Press Esc and a message prompts you to save the changes 5 Press Y to save the changes The computer reboots Deleting or changing an existing system and or setup password Ensure that the Password Status is Unlocked in the System Setup before attempting to delete or change the existing System and or Setup password You cannot delete or change an existing System or Setup password if the Passwor...

Страница 64: ...ing systems The topic lists the operating systems supported for Table 5 Supported operating systems Supported operating systems Description Windows 10 Microsoft Windows 10 Pro 64 bit Microsoft Windows 10 Home 64 bit Other Ubuntu 16 04 LTS SP1 64 bit NeoKylin v6 0 64 bit Downloading drivers 1 Turn on the notebook 2 Go to Dell com support 3 Click Product Support enter the Service Tag of your noteboo...

Страница 65: ...e folder where you saved the driver file 9 Double click the driver file icon and follow the instructions on the screen Intel chipset drivers Verify if the Intel chipset drivers are already installed in the system Table 6 Intel chipset drivers Before Installation After Installation Video driver Verify if the video driver is already installed in the system Software 65 ...

Страница 66: ...tall the WLAN and Bluetooth drivers from the Dell support site Table 8 Network drivers Before installation After installation USB driver Verify if the USB drivers are already installed in the system Table 9 USB driver Before Installation After Installation Storage drivers Verify if the storage controller drivers are installed in the system 66 Software ...

Страница 67: ...llation None Battery drivers The latest battery drivers are installed in the computer Table 11 Battery drivers Before Installation After Installation Intel HID Event Filter Verify if the Intel HID event filter is already installed in the computer Software 67 ...

Страница 68: ...tion After Installation Intel Dynamic Platform and Thermal Framework Verify if the Intel dynamic platform and thermal framework is already installed in the computer Table 13 Intel Dynamic Platform and Thermal Framework After Installation 68 Software ...

Страница 69: ...puter Table 14 Intel management engine interface Before Installation After Installation Disk drivers Disk drivers installed in the system Bluetooth drivers This platform supports a variety of Bluetooth drivers The following is an example Table 15 Bluetooth drivers Before Installation After Installation Software 69 ...

Страница 70: ... 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 70 Software ...

Страница 71: ...system from a power off state only if it is connected to AC power Press and hold the power button for 25 seconds The system RTC reset occurs after you release the power button NOTE If AC power is disconnected from the system during the process or the power button is held longer than 40 seconds the RTC reset process is aborted The RTC reset will reset the BIOS to Defaults un provision Intel vPro an...

Страница 72: ... 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 Verify your country or region in the Choose a Country Region drop down list at the bottom of the page 4 Select the appropriate service or support link based on...

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