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Popular Dell Latitude 7640 Manual Pages
SIM/eSIM Setup Guide for Windows - Page 4
... more information, see Cellular settings in Search support. 3. Insert the SIM card into the SIM-card slot on your mobile operator is powered on the computer. 4. To activate cellular service, you must provide the device IMEI and ICCID to https://www.dell.com/support/ and enter the model number in Windows.
4
Install the SIM card and connect...
SIM/eSIM Setup Guide for Windows - Page 8
...detect feature or manually browse for your mobile broadband card from the drop-down menu. 6. For more information about Drivers and Downloads, see KB article 000123347. 1. Enter the Service Tag of your computer model.
3. Go to www.dell.com/support. 2. Run the installer, and follow the installation instructions.
8
Install the drivers Dell releases updated drivers frequently to ensure...
Service Manual - Page 58
... the system. 5. Remove the bridge connector board from the I /O daughter-board. 12. NOTE: When re-installing the I /O daughter-board bridge connector board to the new I/O daughter-board if you're
replacing the I/O daughter-board for the models shipped with a fingerprint reader. 9. Remove the single screw (M2x2) screw that secures the Drawin antenna cable...
Service Manual - Page 59
... from the palm-rest and keyboard assembly.
Lift and remove the I /O daughter-board
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. NOTE: When replacing an I/O daughter-board for models shipped with a 4G WWAN card, the 4G WWAN card extension bracket and 4G gasket sticker must be removed...
Service Manual - Page 61
... antenna cables, and green P-sensor cable from the system for the models shipped with a 4G WWAN card. 16. Replace the fingerprint reader bracket from the system. Replace the 4G WWAN card bracket from the routing guide on the system. 14.
NOTE: When re-installing the I/O daughter-board bridge connector board secure the six screws (M2x4...
Service Manual - Page 67
....
If the keyboard is malfunctioning and is replaceable component for any palm-rest assembly replacement.
Next steps 1. Install the base cover. Remove the speakers. 10. Remove the keyboard. The image below shows the palm-rest assembly after the pre-removal parts procedures have been performed for the models with the heat sink attached to simplify...
Service Manual - Page 71
...installed, and enabling or disabling
base devices. NOTE: It is recommended to the next field. Use the BIOS Setup program for future reference.
BIOS setup
71 Certain changes can make are recorded but do not change a user-selectable option, such as the user password, type of the System Setup...● Set or change the settings in your computer work incorrectly. 4
BIOS setup
CAUTION: ...
Service Manual - Page 78
... password (if set) when booting to the Enable/Disable states are allowed. By default, the Silent option is disabled.
Password Configuration
Upper Case Letter
Reinforces password must have at least one upper case letter. By default, the option is enabled. By default, the option is disabled.
78
BIOS setup
By default, the option is disabled.
Firmware...
Service Manual - Page 79
... Non-Admin PSID Revert
Controls access to recover from certain corrupted BIOS conditions from the Dell Security Manager prompt. NOTE: Disabling this disables the master password support. NOTE: BIOS Recovery from services such as Microsoft Windows Update and Linux Vendor Firmware Service (LVFS). BIOS Downgrade Allow BIOS Downgrade
This field controls the flashing of the system.
Table...
Service Manual - Page 90
... status LED flashes an error code [2,7], the display cable may not be supplied to the LCD. LCD Built-in Self Test (BIST)
Dell laptops have a built-in self test (BIST) mode. NOTE: Dell SupportAssist Pre-boot diagnostics upon launch, initiates an LCD BIST first, expecting a user intervention confirm functionality of your Latitude 7640.
NOTE: If L-BIST fails...
Service Manual - Page 91
...; Flash latest BIOS version
●
If problem persists,
replace the system board.
CPU failure
● Run the Dell Support
Assist/Dell Diagnostics
tool.
●
If problem persists,
replace the system board.
No memory/RAM detected ● Confirm that the memory
module is installed
properly.
●
If problem persists,
replace the memory
module.
LCD failure (SBIOS message...
Re-imaging guide for Windows - Page 4
...device drivers from a non-Dell website can cause system performance issues, corrupt operating system files, blue screen errors, unexpected shutdowns, or infect your computer is only applicable to follow instructions may create new problems. Review the importance of the procedures. NOTE: Information provided in permanent data loss. This ensures that you install or update device drivers if...
Re-imaging guide for Windows - Page 6
..., install the drivers and applications in the native Microsoft VGA driver, including:
○ User-customizable power management features ○ Portability and behavioral profiles ○ Multiple-monitor support 10. BIOS: Enables the operating system to communicate and adjust settings on components on the system board which include: ● Dell Command Update application ● Dell...
Re-imaging guide for Windows - Page 10
... driver file icon and follow the instructions on your computer, and
then click Search. In some scenarios, you are enabled and can also be manually downloaded and installed from third-party providers. For more information, see the Dell knowledge base article 000132394 at www.dell.com/support.
In the Search support field, enter the Service Tag/Serial Number/Service Request/Model...
Re-imaging guide for Windows - Page 11
...of RAID 0/1 ● Intel VMD support from www.dell.com/support. The following conditions must be met before you saved the IRST driver file. 8. Go to www.dell.com/support. 3. Click Drivers & downloads > Find drivers. 5. Downloading and installing the Dell graphics driver
1. In the Search support field, enter the Service Tag/Serial Number/Service Request/Model/Keyword of your computer does...
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