Dell XPS 27 7760 XPS 27 Service Manual - Page 144

System diagnostic lights

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System diagnostic lights Power status light: Indicates the power status. Solid Amber - The computer is unable to boot to the operating system. This indicates that the power supply or another device in the computer is failing. Blinking Amber - The computer is unable to boot to the operating system. This indicates that the power supply is normal but another device in the computer is failing or not installed properly. NOTE: See the light patterns to determine the device that is failing. Off - Computer 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 3. System diagnostic lights Light pattern Problem description 2,1 System board error 2,2 System board or power supply unit or power supply cable error 2,3 System board or memory or CPU error 2,4 Coin-cell battery error 2,5 BIOS failure 2,6 CPU failure 2,7 Memory or RAM failure 3,3 Memory error 3,5 Memory error 3,6 BIOS Recovery Image Not Found 3,7 BIOS Recovery Image Found But Invalid 144

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System diagnostic lights
Power status light:
Indicates the power status.
Solid Amber
– The computer is unable to boot to the operating system. This indicates
that the power supply or another device in the computer is failing.
Blinking Amber
– The computer is unable to boot to the operating system. This
indicates that the power supply is normal but another device in the computer is failing
or not installed properly.
NOTE: See the light patterns to determine the device that is failing.
Off
– Computer 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 3. System diagnostic lights
Light pattern
Problem description
2,1
System board error
2,2
System board or power supply unit or power
supply cable error
2,3
System board or memory or CPU error
2,4
Coin-cell battery error
2,5
BIOS failure
2,6
CPU failure
2,7
Memory or RAM failure
3,3
Memory error
3,5
Memory error
3,6
BIOS Recovery Image Not Found
3,7
BIOS Recovery Image Found But Invalid
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