4. Names and Functions of Parts
Express5800/R120h-1M User’s Guide
41
Chapter 1 General Description
LEDs on the backside of the unit
No.
Item
Status
Description
1
UID LED
Lights in blue
Confirmation function is used.
Flashes in blue
The system is remotely managed.
Lights off
Confirmation function is not used.
2 (left)
LINK LED
Lights in green
Connected.
Lights off
Not linked to the network.
2 (right) ACT LED
Lights in green
Working in operation.
Flashes in green
Working in operation.
Lights off
Not working.
3
AC POWER2 LED
Lights in green
Normal state
Lights off
One or more of the following situations are occurring
•
AC power is not supplied
•
Power supply unit has failed
•
Power supply unit is in standby mode
•
Power supply unit exceeds the current limit
4
AC POWER1 LED
Lights in green
Normal state
Lights off
One or more of the following situations are occurring
•
AC power is not supplied
•
Power supply unit has failed
•
Power supply unit is in standby mode
•
Power supply unit exceeds the current limit
