Dell Latitude D Series Training page 2

Chassis Bottom . ................................................................................................................................... 18
Key Components ..................................................................................................................................... 18
Changes in Key Components from Prior Notebook Chassis ................................................................... 19
Key Components That Can Be Removed or Replaced ............................................................................ 20
Navigating the System Setup Utility (SSU) . ............................................................................................. 22
BIOS Storage Location . ............................................................................................................................ 23
Types of BIOS .......................................................................................................................................... 23
Entering the BIOS .................................................................................................................................... 24
BIOS Security Policies . ............................................................................................................................. 24
BIOS Level Security . ................................................................................................................................. 24
Types of Passwords . ................................................................................................................................ 25
BIOS Security Information . ...................................................................................................................... 25
Troubleshooting Power and POST issues . ................................................................................................... 25
Objectives................................................................................................................................................ 25
The POST Process . ................................................................................................................................... 26
Function of the BIOS in the POST Process .............................................................................................. 26
Troubleshooting Power-or POST-Related Stage Failures . ....................................................................... 26
LCD Error Messages during POST . ........................................................................................................... 27
Power LED States .................................................................................................................................... 28
Troubleshooting the AC Adapter ............................................................................................................ 28
BIOS LED Codes ....................................................................................................................................... 29
Device Status LEDs .............................................................................................................................. 30
Keyboard Status LEDs.......................................................................................................................... 30
LED Error Codes for a No-POST Situation ............................................................................................... 31
Troubleshooting External Devices and CRUs .......................................................................................... 33
Troubleshooting a System Hard Lock ..................................................................................................... 34
Unlocking a System Hard Lock ................................................................................................................ 34
Troubleshooting Latitude XT Hardware . ..................................................................................................... 34
Digitizer ................................................................................................................................................... 34
Stylus . ...................................................................................................................................................... 35
Troubleshooting Display Issues . .................................................................................................................. 35
Identifying Display Issues ........................................................................................................................ 35
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