Huawei EchoLife OT925-G User Manual page 91

EchoLife OT925-G
User Guide
5.1
Troubleshooting Common Faults
This section describes how to troubleshoot common faults of the OT925-G.
The OT925-G provides status LEDs on the front panel. When a fault occurs, you can locate the fault
through the LED status.
The LINK and AUTH LEDs have two blinking states: quick blinking with a blinking frequency three
times/s and slow blinking with a blinking frequency one time/s.
LED status description and troubleshooting methods
Issue 02 (2007-08-30)
LED Status
PWR On
(Power LED)
Off
ALM On
(System alarm LED)
Off
LINK Quick blinking
(GPON link LED) Slow blinking
On
AUTH
Off
(GPON
authentication status
LED)
E1 LED Green on
Off
Red on
Red blinking
Huawei Technologies Proprietary
Description and Troubleshooting Method
The power supply is normal.
The power supply is abnormal.
Check whether the power cable is
connected correctly.
Check whether the power switch is turned
on.
Device temperature exceeds the alarm
threshold.
Observe whether the fans rotate through
the heat dissipation net.
Leave more space for heat dissipation
and ventilate the device.
The device raises no alarm.
The LINK and AUTH LEDs can indicate seven
states of the ONU defined in the G.984.3, as
shown in 0.
E1 channel is normal without any alarm.
E1 port is idle.
E1 channel has raised an E1_LOS alarm.
Check whether the E1 cable connector is
well connected to the E1 port.
Check whether the E1 cable is
interrupted.
Check whether the peer device is faulty.
E1 channel has raised a severe alarm,
excluding the E1_LOS alarm.
Contact the vendor for maintenance.
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