Diagnostics; Camera Status Indicator; Lcd Built In Self Test - Bist - Dell OptiPlex 5260 Service Manual

Diagnostics

Power status light: Indicates the power status.
Solid Amber – The system is unable to boot to the operating system. This indicates that the power supply or another device in the system
is failing.
Blinking Amber – The system is unable to boot to the operating system. This indicates that the power supply is normal but another device
in the system is failing or not installed properly.
NOTE: To determine the device that is failing, see the light patterns .
Off – System is in hibernation or turned off.
The power status light blinks amber along with beep codes indicating failures.
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
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 109