Table of Contents
Advertisement
NOTE:
•
The blinking patterns will consist of 2 sets of numbers being represented by (First Group: Amber blinks, Second Group: White
blinks)
•
First Group : The LED blinks 1 to 9 times followed by a brief pause with LED off at the interval of 1.5 seconds. (This is in Amber
color)
•
Second Group : The LED blinks 1 to 9 times, that would be then followed by a longer pause before the next cycle starts again at the
interval of 1.5 seconds. (This is in White color)
•
Example: No Memory detected (2,3), Battery LED blinks two times of amber color followed by a pause, and then blinks three times
of white color. The Battery LED will pause for 3 seconds before the next cycle repeat itself again
The following table depicts the amber and white blinking patterns with possible troubleshooting resolution:
Table 1. LED pattern
Blinking pattern
2,1
2,2
2,3
2,4
2,5
2,6
2,7
3,1
3,2
3,3
3,4
Real Time Clock (RTC) reset
The Real Time Clock (RTC) reset function allows you or the service technician to recover the recently launched model Dell Latitude and
Precision systems from select No POST/No Boot/No Power situations. You can initiate the RTC reset on the system from a power off
state only if it is connected to AC power. Press and hold the power button for 25 seconds. The system RTC reset occurs after you release
the power button.
NOTE:
If AC power is disconnected from the system during the process or the power button is held longer than 40 seconds, the
RTC reset process is aborted.
The RTC reset will reset the BIOS to Defaults, un-provision Intel vPro and reset the system date and time. The following items are
unaffected by the RTC reset:
•
Service Tag
•
Asset Tag
•
Ownership Tag
•
Admin Password
•
System Password
•
HDD Password
•
Key Databases
•
System Logs
The following items may or may not reset based on your custom BIOS setting selections:
Problem Description
processor
system board, BIOS ROM
memory
memory
memory
system board; chipset
display
RTC power failure
PCI/Video
BIOS recovery 1
BIOS recovery 2
Suggested Resolution
processor failure
system board, covers BIOS corruption or ROM error
no memory/no RAM detected
memory failure/RAM failure
invalid memory installed
system board/ chipset error
display failure
coin-cell battery failure
PCI/Video card/chip failure
recovery image not found
recovery image found but invalid
Troubleshooting
35
Hide quick links:
Advertisement
Table of Contents
