Contents Chapter 1: Working on your computer....................7 Turning off your — Windows............................7 Turning off your computer — Windows 8........................7 Turning off your computer — Windows 7........................7 Before working inside your computer..........................8 Safety instructions................................8 After working inside your computer..........................9 Chapter 2: Disassembly and reassembly..................10 Recommended tools................................10 Screw size list..................................
Page 4
Removing LED board..............................23 Installing LED board..............................24 Smart card module................................24 Removing smart card cage............................24 Installing smart card cage............................26 Touchpad.....................................26 Removing touchpad buttons board.........................26 Installing touchpad buttons board...........................28 Power connector port..............................28 Removing power connector port..........................28 Installing power connector port..........................29 Display Assembly................................
Page 5
Intel software guard extensions screen options......................56 Performance screen options............................56 Power management screen options..........................57 POST behavior screen options............................58 Manageability..................................59 Virtualization support screen options...........................59 Wireless screen options..............................59 Maintenance screen................................. 59 System logs..................................60 Updating the BIOS in Windows ............................ 60 Updating BIOS using USB flash drive...........................
Page 6
System and setup password............................82 Assigning a system setup password........................82 Deleting or changing an existing system setup password.................82 Chapter 6: Troubleshooting......................83 Enhanced Pre-Boot System Assessment — ePSA diagnostics................83 Running the ePSA Diagnostics..........................83 Chapter 7: Contacting Dell......................84 Contents...
Working on your computer Topics: • Turning off your — Windows • Turning off your computer — Windows 8 • Turning off your computer — Windows 7 • Before working inside your computer • Safety instructions • After working inside your computer Turning off your —...
Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
CAUTION: To avoid damage to the computer, use only the battery designed for this particular Dell computer. Do not use batteries designed for other Dell computers. 1. Connect any external devices, such as a port replicator or media base, and replace any cards, such as an ExpressCard.
The procedures in this document require the following tools: ● Phillips #0 screwdriver ● Phillips #1 screwdriver ● Small plastic scribe Screw size list Table 1. Latitude 7480 - Screw size list M2.5 x Component M2.5x 6.0 M2.5x5.0 M2.0 x 5.0 M2.0x3.0...
Table 1. Latitude 7480 - Screw size list (continued) M2.5 x Component M2.5x 6.0 M2.5x5.0 M2.0 x 5.0 M2.0x3.0 M2.0 x 2.5 M2.0 x 2.0 Heat sink module System fan WWAN card WLAN card Power connector port ESD bracket EDP bracket...
Replacing SIM card 1. Insert a paperclip or a SIM card removal tool into the pinhole on the SIM card tray. 2. Use a scribe to pull the SIM card tray 3. Place on the SIM card on the tray. 4.
Base cover Removing base cover 1. Follow the procedure in Before working inside your computer. 2. To release the base cover: a. Loosen the M2.5 x 6 captive screws (8) that secure the base cover to the computer [1]. NOTE: Exercise caution when loosening the screws.
Installing 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 M2.5 x 6.0 captive screws to secure the base cover to the computer. NOTE: Exercise caution when tightening the screws.
● If the battery gets stuck inside your computer as a result of swelling, do not try to release it as puncturing, bending, or crushing a lithium-ion battery can be dangerous. In such an instance, contact Dell technical support for assistance. See www.dell.com/contactdell.
NOTE: A small battery (3-cell) has a single screw, a larger battery (4-cell) has two screws. 4. Install the base cover 5. Follow the procedure in After working inside your computer. PCIe Solid State Drive (SSD) Removing PCIe SSD 1. Follow the procedure in Before working inside your computer.
NOTE: When installing the SSD bracket, ensure that the tab on the bracket is held securely with the tab on the palm rest. NOTE: Ensure to install the bracket is the system is shipped with bracket. 3. Tighten the M2 x 3 screws to secure it the SSD bracket. 4.
4. To remove the speaker module: a. Remove the M2.0x3.0 screws (4) that secure the speaker module to the computer [1]. b. Lift the speaker module from the computer . NOTE: Ensure to un-route the speaker cable from the routing clips. Installing speaker module 1.
b. Lift the coin cell battery to release it from the adhesive [2]. Installing coin cell battery 1. Affix the coin cell battery on the slot inside the computer. 2. Route the coin cell battery cable through the routing channel before connecting the cable. 3.
d. . Installing 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 tighten the M2.0 x 3.0 screw to secure it to the computer. 4.
c. Disconnect the WLAN cables from the connectors on the WLAN card [3]. d. Remove the WLAN card from the computer [4]. NOTE: Ensure NOT to pull the WLAN card more than 35°, to avoid damage to pin. Installing WLAN card 1.
Installing memory module 1. Insert the memory module into the connector until snaps in. 2. Connect the battery cable to the connector on the system board. 3. Install the base cover. 4. Follow the procedures in After working inside your computer.
b. Remove the M2.0 x 5.0 screws that secure the heat sink assembly to the system board [2]. NOTE: Remove the screws in the order of the callout numbers [1, 2, 3, 4] as indicated on the heat sink. c. Lift the heat sink assembly from the system board [3]. Installing heat sink assembly Heat sink assembly comprises of heat sink and the system fan.
3. To remove the LED board: a. Disconnect the LED cable from the LED board [1]. CAUTION: Avoid pulling the cable as it would result in breaking the cable connector. Instead, use a scribe to push the edges of the cable connector to release the LED cable. b.
Page 25
battery PCIe SSD card 3. To disconnect the smart card cable: a. Disconnect the smart card cable [1]. NOTE: Ensure to gently push the connector, to avoid damage to the smart card head. b. Lift the smart card cable that is affixed to the touchpad module [2]. NOTE: Ensure to pull gently to release it with adhesive tape.
Installing smart card cage 1. Slide the smart card cage into the slot to align with the tabs on the computer. 2. Tighten the M2 x 3 screws to secure the smart card cage to the computer. 3. Affix the smart card cable and connect it to the connector on the computer . 4.
Page 27
b. Lift the smart card cable that is affixed to the computer [2] to reveal the touchpad buttons board cable. c. Remove the adhesive tape that secures the speaker cable to the touchpad panel [3]. NOTE: Un-route the speaker cable from the routing clips from the touchpad buttons. 4.
Installing touchpad buttons board 1. Insert the touchpad buttons board into the slot to align the tabs with the grooves on the computer. 2. Tighten the M2.0 x 3.0screws to secure the touchpad buttons board to the computer. 3. Connect the touchpad buttons board cable to the connector on the touchpad board. 4.
NOTE: Use a plastic scribe to release the cable from the connector. Do not pull the cable as it may result in breakage b. Remove the M2.0x3.0 screw (1) to release the metal bracket on the power connector port [2]. c.
Page 30
battery WLAN card WWAN card NOTE: To identify the number of screws, see screw list 3. To remove the display assembly: a. Un route the WLAN and WWAN cables from the routing channels [1]. b. Disconnect the IR camera cable from the system board [2]. c.
Installing display assembly 1. Place the base of the computer on a plane surface of a table and position it closer to the edge of the table. 2. Install the display assembly to align it with the display hinge holders on the system. 3.
Page 32
WLAN card WWAN card display assembly 3. To remove the touch display panel: a. Use a plastic scribe to loosen the edges of the display panel. b. Flip the display screen over from the top. c. Peel the adhesive tape [1], Mylar shield [2]. d.
4. Remove the display bezel from the display assembly. Installing touch display panel NOTE: The touch display panel installation procedure is applicable only for systems with touch display configuration. 1. Place the display panel on the display assembly. 2. Reconnect the IR cable and eDP cable. 3.
1. Follow the procedure in Before working inside your computer. 2. Remove the: base cover battery WLAN card WWAN card display assembly 3. To remove the display bezel: a. Use a plastic scribe to loosen the bottom edge of the display [1]. b.
Nontouch display panel Removing the display panel (nontouch) NOTE: The display panel removal procedure is applicable only for nontouch display configuration. 1. Follow the procedure in Before working inside your computer. 2. Remove the following components: base cover battery WLAN card WWAN card display assembly display bezel...
Page 36
d. Peel off the display connector adhesive strip from the display panel [1]. e. Peel off the mylar tape securing the display cable on the back of the display panel [2]. f. Lift the metal tab and disconnect the display cable from the back of the display panel [3,4]. g.
Installing the display panel (nontouch) NOTE: The display panel installation procedure is applicable only for nontouch display configuration. 1. Connect the display cable on the back of the display panel. 2. Affix the mylar tape securing the display cable on the back of the display panel. 3.
Installing camera The installation procedure is applicable only for systems shipping with a nontouch display configuration. 1. Connect the camera cable. 2. Insert the camera microphone module into the slot on the display assembly. 3. Affix the tape to secure the camera module. 4.
Display Hinge Caps Removing the display hinge cap 1. Follow the procedure in Before working inside your computer. 2. Remove the following components: base cover battery WLAN card WWAN card display assembly 3. Slide hinge cap from left to the right to release and remove the display hinge cap from the display panel. Installing the display hinge cap 1.
Manual. For models shipped with a wireless card only, a dummy SIM card tray must first be removed from the system before removing the system board. The following are the steps for removing the dummy SIM card tray. 1. Push the release latch located on the SIM card slot inwards. 2.
Page 41
4. To disconnect the eDP cable: a. Un route the WLAN and WWAN cables from the routing channels [1]. b. Disconnect the IR cable from the system board [2]. c. Remove the M2.0 x 3.0 screw that secures the eDP cable [3]. d.
Page 42
5. To disconnect the cables: NOTE: To disconnect the speaker, LED board, coin cell battery and the power connector port cables, use a plastic scribe to release the cables from the connectors. Do not pull the cable as it may result in breakage a.
Page 43
6. To remove the system board: a. Remove the USB type-C bracket. Image does not display the USB type-C bracket removal. b. Remove the M2.0 x 5.0 screws that secure the system board [1]. c. Lift the system board away from the computer. Disassembly and reassembly...
Page 44
7. Remove the M2.0x5.0 screws that secure the USB Type-C bracket. 8. Flip the system board, peel off the tapes securing the bracket and remove the USB Type-C port from the system board. Disassembly and reassembly...
Installing system board 1. Place the USB Type-C port along with the bracket in the slot on the system board. 2. Affix the tape to secure the Type-C bracket. 3. Flip the system board and tighten the M2 x 3 screws to secure the USB type-C port to the system board. 4.
Page 46
memory module PCIe SSD WLAN card WWAN card heat sink assembly system board 3. Disconnect the cables from the palmrest end: a. keyboard cable [1] b. keyboard backlight cable [2] c. Touchpad and USH board cables [3,4] 4. To remove the keyboard assembly: NOTE: To identify the screws, see screw list...
Removing keyboard from keyboard tray 1. Follow the procedure in Before working inside your computer. 2. Remove the keyboard assembly 3. Remove the five M2.0 x 2.0 screws that secure the keyboard to the keyboard assembly. 4. Lift the keyboard away from the keyboard tray. Installing keyboard to keyboard tray 1.
2. Tighten the five M2.0 x 2.0 screws to secure the keyboard to the keyboard tray. 3. Install the keyboard assembly. Installing keyboard assembly NOTE: The keyboard and the keyboard tray together are called the keyboard assembly. NOTE: The keyboard has multiple snap points on the lattice side which must be pushed down firmly at the snap points in order to secure and fit it to the replacement keyboard.
Page 49
heat sink assembly coin cell battery speaker display assembly system board keyboard The component that you are left with is the palm rest. 3. Replace the palm rest. 4. Install the: keyboard system board display assembly speaker coin cell battery heatsink power connector port WLAN card...
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 are also included in this menu. The devices listed on the boot menu depend on the bootable devices in 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. Moves to the next focus area.
The options are: ● Enable USB Boot Support—enabled by default ● Enable the Thunderbolt ports—enabled by default ● Always Allow dell docks—enabled by default ● Enable External USB Port—enabled by default ● Enable Thunderbolt Boot Support ● Enable Thunderbolt (and PCIE behind TBT) Preboot ●...
Page 53
Option Description NOTE: USB keyboard and mouse always work in the BIOS setup irrespective of these settings. 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.
Video Option Description LCD Brightness Allows you to set the display brightness depending up on the power source—On Battery and On AC. The LCD brightness is independent for battery and AC adapter. It can be set using the slider. NOTE: The video setting is visible only when a video card is installed into the system.
Option Description ● UEFI capsule Firmware updates—enabled by default ● TPM On—enabled by default ● Clear ● PPI Bypass for Enable Commands ● PPI Bypass for Disabled Commands ● Attestation enable—enabled by default ● Key storage enable—enabled by default ● SHA-256—enabled by default ●...
Option Description ● Save to File—Saves the key to a user-selected file ● Replace from File—Replaces the current key with a key from a user-selected file ● Append from File—Adds a key to the current database from a user-selected file ●...
Charge ● Adaptive—enabled by default Configuration ● Standard—Fully charges your battery at a standard rate. ● ExpressCharge—The battery charges over a shorter time using Dell’s fast charging technology This option is enabled by default. ● Primarily AC use ● Custom If Custom Charge is selected, you can also configure Custom Charge Start and Custom Charge Stop.
Option Description NOTE: All charging mode may not be available for all the batteries. To enable this option, disable the Advanced Battery Charge Configuration option. Sleep mode ● OS Automatic selection—enabled by default Force S3 Type-C ● 7.5 Watts connector power ●...
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 ● Disabled default ● Enabled Default setting: Disabled Virtualization support screen options Option Description...
If BitLocker is enabled, it must be suspended prior to updating the system BIOS, and then re enabled after the BIOS update is completed. 1. Restart the computer. 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.
3. Insert the USB Flash drive into the system that requires the BIOS update. 4. Restart the system and press F12 when the Dell logo appears to display the boot menu. 5. Using arrow keys, select USB Storage Device and press Return.
Deleting or changing an existing system setup password Ensure that the Password Status is Unlocked (in the System Setup) before attempting to delete or change the existing System and Setup password. You cannot delete or change an existing System or Setup password, if the Password Status is Locked.
Display specifications • Physical specifications • Environmental specifications Supported operating systems The topic lists the operating systems supported for Latitude 7480 system. Table 3. Supported operating systems Supported operating systems Description Windows 10 ● Microsoft Windows 10 Pro 64-bit ● Microsoft Windows 10 Home 64-bit Other ●...
Table 5. Video specifications (continued) Feature Specifications External display support On system - eDP (internal display), HDMI Type Integrated on system board Intel 7th generation i3 / i5/ i7 series NOTE: Supports one VGA, DisplayPort, HDMI through the docking station . Audio specifications Feature Specification...
Operating Docking options NOTE: Docking stations are sold separately. Options ● Dell Dock WD15 ● Dell Dock Stand DS1000 ● Dell Thunderbolt Dock TB16 Port and connector specifications Table 6. Temperature specifications Feature Specifications Audio Microphone-in, stereo headphones, and headset combo...
Table 6. Temperature specifications (continued) Feature Specifications high-definition audio codecExternal interface - microphone-in and stereo headphones/speakers universal connector Speakers: Power: 2X2 Wrms Internal speaker amplifier: Two watts per channel Internal microphone: Digital microphone (dual microphone with camera) No volume control buttons Support hot-key keyboard button Network adapter One RJ-45 connector...
Touchpad specifications Feature Specification Active Area: Sensor-active area X-axis Y-axis X/Y position X: 1048cpi; Y:984cpi resolution Multi-touch Configurable single finger and multi-finger gestures Display specifications Feature Specification Type - 14.0" Anti Glare HD WLED-Non Touch Luminance 200 nits Height 205.6 mm (8.09 inches) Width 320.9 mm (12.63 inches) Diagonal...
Page 69
Feature Specification Contrast ratio 600:1 (minimum) Refresh rate 60 Hz Maximum +/-80° viewing angles— horizontal Maximum +/-80° viewing angles— vertical Pixel pitch 0.161 x 0.161 mm Feature Specification Type - 14.0" FHD Anti Glare IPDS - Touch Luminance 270 nits Height 205.05 mm (8.07 inches) Width...
Feature Specification Maximum +/-80° viewing angles— horizontal Maximum +/-80° viewing angles— vertical Pixel pitch 0.1209 × 0.1209 mm Physical specifications Feature Specification Front height— 11.58 mm (0.45 inch) non-touch Back height— 18.41 mm (0.72 inch) non-touch Back height— 18.41 mm (0.72 inch) touch Width 331.0 mm (13.03nches)
Boot sequence enables you to bypass the System Setup–defined boot device order and boot directly to a specific device (for 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 ●...
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. Moves to the next focus area.
The options are: ● Enable USB Boot Support—enabled by default ● Enable the Thunderbolt ports—enabled by default ● Always Allow dell docks—enabled by default ● Enable External USB Port—enabled by default ● Enable Thunderbolt Boot Support ● Enable Thunderbolt (and PCIE behind TBT) Preboot ●...
Page 74
Option Description NOTE: USB keyboard and mouse always work in the BIOS setup irrespective of these settings. 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.
Video Option Description LCD Brightness Allows you to set the display brightness depending up on the power source—On Battery and On AC. The LCD brightness is independent for battery and AC adapter. It can be set using the slider. NOTE: The video setting is visible only when a video card is installed into the system.
Option Description ● UEFI capsule Firmware updates—enabled by default ● TPM On—enabled by default ● Clear ● PPI Bypass for Enable Commands ● PPI Bypass for Disabled Commands ● Attestation enable—enabled by default ● Key storage enable—enabled by default ● SHA-256—enabled by default ●...
Option Description ● Save to File—Saves the key to a user-selected file ● Replace from File—Replaces the current key with a key from a user-selected file ● Append from File—Adds a key to the current database from a user-selected file ●...
Charge ● Adaptive—enabled by default Configuration ● Standard—Fully charges your battery at a standard rate. ● ExpressCharge—The battery charges over a shorter time using Dell’s fast charging technology This option is enabled by default. ● Primarily AC use ● Custom If Custom Charge is selected, you can also configure Custom Charge Start and Custom Charge Stop.
Option Description NOTE: All charging mode may not be available for all the batteries. To enable this option, disable the Advanced Battery Charge Configuration option. Sleep mode ● OS Automatic selection—enabled by default Force S3 Type-C ● 7.5 Watts connector power ●...
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 ● Disabled default ● Enabled Default setting: Disabled Virtualization support screen options Option Description...
If BitLocker is enabled, it must be suspended prior to updating the system BIOS, and then re enabled after the BIOS update is completed. 1. Restart the computer. 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.
System and setup password Table 10. 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.
Invoke diagnostics boot by either of the methods that are suggested below: 1. Power on the computer. 2. As the computer boots, press the F12 key when the Dell logo is displayed. 3. In the boot menu screen, use Up/Down arrow key to select the Diagnostics option and then press Enter.
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.