Description of Indicator Lights on the Front of theOptix Metro1000Enclosure

Indicator Name	Indicator Status	Meaning
ETN - Ethernet light (yellow)	Out	Ethernet cable not connected
	On, not blinking	Ethernet cable stays connected, no data transfer
	Blinking	Ethernet cable stays connected, data is transmitted
RUN-Run light (green)	Blinks every 2 seconds	Normal operating state of the device
	Blinks every 4 seconds	Database protection mode; communication between the single board and the master unit is interrupted
	Blinks 5 times every 1 second	Program startup/loading; veneer is not in working state
	Blinks about 2 times every 1 second	Erase host software
	Blinks 1 time per 1 second	Host software not loaded
RALM-emergency alarm light (red)	Lights up	When an emergency alarm occurs
	Out	No emergency alarm
YALM-Important Alarm Lamp (Yellow)	Bright	Critical and secondary alarms
	Out	No critical and secondary alarms
FANALM-Fan alarm light (yellow)	On	At least one fan on the fan board is not working properly
	Out	Fan working normally

The technical information in this chapter and the related SDH equipment troubleshooting procedures are provided by Shenzhen Optical Transmission Network Technology Co. Huawei SDH optical transmission equipment, SDH transmission equipment sales phone: 13430988088 Welcome to telephone consultation!