Diagnostic power LED codes
Table 18. Diagnostic power LED codes
Power LED light status
Possible cause
Troubleshooting steps
At first power apply: No LED light up
briefly
Both power LED and activity LED come
up briefly and then turn off.
•
Check AC power, call your utility
company.
•
Check that AC power cord is plugged-
in.
•
Check that DC plug is plugged into
the unit.
At first power apply: Both LEDs stay ON
Both power LED and activity LED come
up briefly and then turn off.
•
Logic board defect
•
BIOS malfunctioning
•
Abnormal power source
Push power button the LED does not turn •
Power LED should come up in steady
Blue.
•
Activity LED should turn on in steady
Amber.
•
Logic board defect
•
Power button defect
•
Mechanical assembly misaligned;
causes miss actuation.
LED comes up normally but no display
BIOS screen is displayed after few
seconds.
•
Incompatible monitor
•
Defect logic board
•
Malfunction dongle (if used)
•
Defect cable or connector
Distorted display
Should have normal viewable display.
•
Incompatible monitor
•
Incompatible dongle (if used)
•
Not supported display mode
•
Bad connection on display output
•
Logic board defect
49
