Dell Latitude 7490 Owner's Manual page 4

Removing LED board.................................................................................................................................................. 25
Installing LED board.................................................................................................................................................... 25
Smart card module............................................................................................................................................................26
Removing smart card cage....................................................................................................................................... 26
Installing smart card cage..........................................................................................................................................27
Touchpad buttons board................................................................................................................................................. 27
Removing touchpad buttons board.........................................................................................................................27
Installing touchpad buttons board...........................................................................................................................28
Power connector port...................................................................................................................................................... 28
Removing power connector port.............................................................................................................................28
Installing power connector port...............................................................................................................................29
Display Assembly............................................................................................................................................................... 29
Removing display assembly ......................................................................................................................................29
Installing display assembly .........................................................................................................................................31
Touch display panel........................................................................................................................................................... 31
Removing touch display panel...................................................................................................................................31
Installing touch display panel.................................................................................................................................... 33
Display Bezel.......................................................................................................................................................................33
Removing display bezel (nontouch)........................................................................................................................33
Installing display bezel (nontouch)..........................................................................................................................34
Nontouch display panel....................................................................................................................................................35
Removing the display panel (nontouch)................................................................................................................ 35
Installing the display panel (nontouch)...................................................................................................................37
Camera Microphone Module...........................................................................................................................................37
Removing camera-microphone module.................................................................................................................. 37
Installing camera.......................................................................................................................................................... 39
Display Hinge Caps........................................................................................................................................................... 39
Removing the display hinge cap.............................................................................................................................. 39
Installing the display hinge cap.................................................................................................................................40
System board..................................................................................................................................................................... 40
Removing system board............................................................................................................................................ 40
Installing system board...............................................................................................................................................44
Keyboard..............................................................................................................................................................................44
Removing keyboard assembly.................................................................................................................................. 44
Removing keyboard from keyboard tray................................................................................................................46
Installing keyboard to keyboard tray.......................................................................................................................46
Installing keyboard assembly.....................................................................................................................................47
Palm rest..............................................................................................................................................................................47
Replacing palm rest ....................................................................................................................................................47
Chapter 3: Technology and components...................................................................................... 49
DDR4.................................................................................................................................................................................... 49
HDMI 1.4.............................................................................................................................................................................. 50
USB features.......................................................................................................................................................................51
USB Type-C........................................................................................................................................................................53
Thunderbolt over USB Type-C...................................................................................................................................... 53
Chapter 4: System specifications................................................................................................ 55
Technical specifications...................................................................................................................................................55
4 Contents