Dell Latitude 7212 Rugged Extreme Tablet Latitude 12 Rugged Extreme Tablet - 7 - Page 83

Troubleshooting, Dell Enhanced Pre-Boot System Assessment - ePSA diagnostic 3.0, Diagnostic LED

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7 Troubleshooting 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 battery LED in a notebook. Instead of beep codes errors are indicated via the bicolor Battery Charge 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 will consist of a two digit number being represented by a first group of LED blinks (1 through 9) in amber, followed by a 1.5 second 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 shutdown 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 3 3 BIOS Recovery 1 3 4 BIOS Recovery 2 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 Recovery Image not found Recovery Image found but invalid Troubleshooting 83

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Troubleshooting
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 battery LED in a notebook.
Instead of beep codes errors are indicated via the bicolor Battery Charge 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 will consist of a two digit number being represented by a
first
group of LED blinks (1 through 9) in
amber, followed by a 1.5 second 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 shutdown 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
Fault(s)
Amber
White
2
1
CPU
CPU failure
2
2
Motherboard: BIOS ROM
failure
Motherboard, covers BIOS corruption, or ROM error
2
3
memory
no memory/no RAM detected
2
4
memory
memory failure/RAM failure
2
6
Motherboard: Chipset
Motherboard/Chipset Error
2
7
LCD
LCD failure
3
3
BIOS Recovery 1
Recovery Image not found
3
4
BIOS Recovery 2
Recovery Image found but invalid
7
Troubleshooting
83