5
Troubleshooting
Fault
Troubleshooting Method
The CHG LED is off when the
charger charges the battery.
y.
z
Check whether the battery is fully charged.
z
Check whether the charger matches the batter
z
Check whether the mains supply is normal.
The backup battery unit fails to
work and the DIS LED is off after
z
Check whether the cables are properly connected.
the mains supply is cut.
z
Check whether the battery is exhausted.
The battery buzzer generates
beeps.
z
ttery expires. If yes, replace the
battery immediately.
Check whether the ba
The OLT fails to monitor the
status of the backup battery unit.
z
her the battery monitoring cable is properly
z
Check whether the ONT works normally.
Check whet
connected.
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