Troubleshooting
Troubleshooting Using LED Indicators
Chapter 4
54
Table 4-3 Diagnostic LED Displays and Meanings
Diag 1
LED
Diag 2
LED
Diag 3
LED
Diag 4
LED
System
LED
Description
Off Off Green Red Flashing
Yellow
Fan 3 warning. BMC is reporting that one fan
rotor is turning more slowly than expected (or
stopped). Investigate problem at the first
opportunity.
Off Green Off Red Flashing
Yellow
Fan 2 warning. BMC is reporting that one fan
rotor is turning more slowly than expected (or
stopped). Investigate problem at the first
opportunity.
Off Green Green Red Flashing
Yellow
Fan 5 warning. BMC is reporting that one fan
rotor is turning more slowly than expected (or
stopped). Investigate problem at the first
opportunity.
Off Red Green Red Flashing
Yellow
Power supply 2 warning. The power supply is
functioning but reporting an error condition.
Replace the power supply at the first
opportunity.
Off Red Red Off Flashing
Yellow
No video warning. No video output is available
from the management processor. Replace the
MP board.
Green Off Off Red Flashing
Yellow
Fan 1 warning. BMC is reporting that one fan
rotor is turning more slowly than expected (or
stopped). Investigate problem at the first
opportunity.
Green Green Off Red Flashing
Yellow
Fan 4 warning. BMC is reporting that one fan
rotor is turning more slowly than expected (or
stopped). Investigate problem at the first
opportunity.
Green Green Red Off Flashing
Yellow
System battery voltage low. Replace the system
battery.
Green Red Off Red Flashing
Yellow
Power supply 1 warning. The power supply is
functioning but reporting an error condition.
Replace the power supply at the first
opportunity.
Red Off Green Green Flashing
Yellow
Memory load order warning. Verify that DIMMs
are correctly installed.
Red Green Green Red Flashing
Yellow
Intake air temperature hot. Check for blockage.
Clean air intake openings.
Red Red Off Green Flashing
Yellow
CPU 1 temperature warning. Check for
blockages. Investigate the problem at the first
opportunity.
