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For example, the power status light blinks amber two times followed by a pause, and then blinks white three times followed by a pause.
This 2,3 pattern continues until the computer is turned off indicating the Recovery image is not found.
The following table shows different light patterns and what they indicate:
Table 4. Diagnostic LED/Beep codes
LED # of Flashes
2,1
2,2
2,3
2,4
2,5
2,6
2,7
3,3
3,5
3,6
3,7
The system may emit a series of beeps during start-up if the errors or problems cannot be displayed. The repetitive beep codes help the
user troubleshoot problems with the system.
Camera status indicator
Camera status light: Indicates whether the camera is in use.
•
Solid white – Camera is in use.
•
Off – Camera is not in use.
LCD built in self test - BIST
All-in-One (AIO) systems supports LCD BIST similar to any other Dell systems that have BIST test implemented. It allows the user to
isolate the LCD during troubleshooting to determine which sub-system is at fault. The main difference is the lack of an integrated
keyboard scan controller in the AIO. When BIST is initiated, an internal generated pattern from the LCD will be emitted for user's
observation. This pattern will go by sequence through this pattern, Red- Green-Blue-White-Blue where each pattern is emitted for 2 to 3
seconds.
The following images displays the pattern of the colors on the LCD:
Standard display
Problem description
Faulty system board
Faulty system board, power supply unit
(PSU), or cabling
Faulty system board, CPU, or DIMMS
Faulty coin cell battery
BIOS Recovery
CPU
Memory
Memory
Memory
BIOS Recovery
BIOS Recovery
Faults
Faulty system board
Faulty system board, power supply unit (PSU), or cabling
Faulty system board, power supply unit (PSU), or DIMMS
Faulty coin cell battery
AutoRecovery trigger, recovery image is not found or is
invalid
CPU Error
Memory SPD failure
No memory detected
Modules incompatible or invalid configuration
On-demand trigger, recovery image is not found
On-demand trigger, recovery image is invalid
Troubleshooting your computer
105
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