General Troubleshooting - Dell Latitude 14 Rugged Extreme Owner's Manual

General troubleshooting

Table 3. General Troubleshooting
Issue
Battery Charging
No POST
Video
Suggested Troubleshooting Steps
The battery should be charged while the system is off for faster charge time.
Users may notice longer charge times when the system is turned on and running
graphics-intensive applications.
CAUTION: There is a danger of a new battery exploding if it is incorrectly
installed. Replace the battery only with the same or equivalent type
recommended by the manufacturer. Discard used batteries according to
the manufacturer's instructions.
When a user starts the notebook, the first thing that the BIOS does is to perform
the Power-On Self-Test (POST). The POST is a built-in diagnostic program that
checks the hardware to make sure that everything is present and functioning
properly, before the BIOS begins the actual boot.
If the system does not perform a Power-On Self-Test, there are various things
that you can look for:
1. Check that the system has a power light.
2. If the system has no power light, make sure that it is plugged into AC
power.
3. Remove the battery. Make sure that the power is turned off and the system
is unplugged.
4. Remove all CRUs from the system and reconnect the AC adapter to the
system and try again.
5. Run the ePSA diagnostics.
If the LCD on the system does not show any display or has other problems, here
are some basic steps that you can perform:
1. If the LCD is not displaying video or the video is garbled, run the ePSA
diagnostics.
2. If the LCD is not displaying any video, connect an external monitor to
eliminate a no-POST problem. A good image on the external monitor
eliminates a video card problem or a POST problem.
3. Connect an external monitor, when possible, for all LCD-related problems
to help eliminate a possible software or video card problem.
4. If the LCD has dim video, adjust the brightness or connect an AC adapter to
eliminate a power management conservation setting in the BIOS.
5. If the LCD has lines on the screen, check the system during POST and
system setup, to determine if the lines are present in all modes of
operation. Run the ePSA diagnostics.
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