Diagnostic Power Led Codes - Dell Wyse 3040 Thin Client User Manual

Diagnostic power LED codes

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