Dell Latitude 3420 Service Manual page 4

Installing the hard-disk drive bracket..................................................................................................................... 34
Installing the hard-disk drive assembly.................................................................................................................. 35
WLAN card..........................................................................................................................................................................36
Removing the WLAN card.........................................................................................................................................36
Installing the WLAN card........................................................................................................................................... 37
WWAN card........................................................................................................................................................................ 38
Removing the WWAN card....................................................................................................................................... 38
Installing the WWAN card......................................................................................................................................... 39
System fan...........................................................................................................................................................................41
Removing the system fan...........................................................................................................................................41
Installing the system fan............................................................................................................................................ 42
Battery................................................................................................................................................................................. 43
Removing the 3-cell battery..................................................................................................................................... 43
Installing the 3-cell battery....................................................................................................................................... 44
Removing the 4-cell battery..................................................................................................................................... 45
Installing the 4-cell battery....................................................................................................................................... 46
I/O cable..............................................................................................................................................................................48
Removing the I/O cable.............................................................................................................................................48
Installing the I/O cable............................................................................................................................................... 48
Display assembly................................................................................................................................................................49
Removing the display assembly............................................................................................................................... 49
Installing the display assembly..................................................................................................................................52
Display panel.......................................................................................................................................................................54
Removing the display panel...................................................................................................................................... 54
Installing the display panel.........................................................................................................................................57
Display bezel.......................................................................................................................................................................60
Removing the display bezel...................................................................................................................................... 60
Installing the display bezel......................................................................................................................................... 61
Heatsink assembly.............................................................................................................................................................62
Removing the heatsink assembly............................................................................................................................ 62
Installing the heatsink assembly...............................................................................................................................62
Power adapter port...........................................................................................................................................................63
Removing the power adapter port.......................................................................................................................... 63
Installing the power adapter port............................................................................................................................ 64
Coin-cell battery................................................................................................................................................................65
Removing the coin-cell battery................................................................................................................................65
Installing the coin-cell battery.................................................................................................................................. 66
USB cable............................................................................................................................................................................ 67
Removing the USB cable........................................................................................................................................... 67
Installing the USB cable............................................................................................................................................. 68
Ethernet port......................................................................................................................................................................69
Removing the ethernet port..................................................................................................................................... 69
Installing the ethernet port....................................................................................................................................... 70
I/O board..............................................................................................................................................................................71
Removing the I/O board............................................................................................................................................. 71
Installing the I/O board.............................................................................................................................................. 72
Power button......................................................................................................................................................................73
Removing the power button without fingerprint reader....................................................................................73
Installing the power button without fingerprint reader...................................................................................... 74
Removing the power button with fingerprint reader..........................................................................................75
4 Contents