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Dell Enhanced Pre-Boot System Assessment - ePSA diagnostic 3.0
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Diagnostic LED
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Solución de problemas generales
Dell Enhanced Pre-Boot System Assessment - ePSA
diagnostic 3.0
You can invoke the BIOS and ePSA diagnostics by either:
NOTE:
As the rugged tablet is without keyboard, perform the following ePSA diagnostic.
● To enter BIOS (system setup) without keyboard, Power on system. Press on Volume decrease button during startup (as
the Dell Logo appears) until the BIOS (system setup) screen is displayed.
● To enter ePSA (system setup) without keyboard, Power on system. Press on Volume increase button during startup (as
the Dell Logo appears) until the BOOT Menu screen is displayed.
NOTE:
Use the Volume increase button to navigate to respective diagnostic and press on Volume decrease button to
select the required option.
Diagnostic LED
This section details the diagnostic features of the Latitude 7212 Rugged Tablet.
Instead of beep codes, errors are indicated via the bicolor power-button LED. A specific blink pattern is followed by flashing a
pattern of flashes in amber, followed by white. The pattern then repeats.
NOTE:
The diagnostic pattern consists of a two-digit number being represented by a first group of LED blinks (1 through
9) in amber, followed by a 1.5 seconds pause with the LED off, and then a second group of LED blinks (1 through 9) in
white. This is then followed by a three second pause, with the LED off, before repeating over again. Each LED blink takes
0.5 seconds.
The system will not shut down when displaying the Diagnostic Error Codes. Diagnostic Error Codes will always supersede any
other use of the LED. For instance, on Notebooks, battery codes for Low Battery or Battery Failure situations will not be
displayed when Diagnostic Error Codes are being displayed:
Table 10. LED pattern
Blinking pattern Problem Description
Amber
White
2
1
CPU
2
2
Motherboard: BIOS ROM
failure
2
3
memory
2
4
memory
2
6
Motherboard: Chipset
2
7
LCD
78
Solución de problemas
Solución de problemas
Fault(s)
CPU failure
Motherboard, covers BIOS corruption, or ROM error
no memory/no RAM detected
memory failure/RAM failure
Motherboard/Chipset Error
LCD failure
7
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