TP48200A-DX08A1 and TP48200A-DX08A2 Telecom
Power
User Manual
4 Maintenance
Issue 06 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
35
Maintenance
Item
Item
temperature.
Dust
accumulates on
the dust filter.
Electricity
The output voltage
is normal.
Multimeter
The BLVD or
LLVD voltage
exceeds the
threshold.
For details, see 4.2
Rectifying
Common Faults.
Preventive
maintenance
Indicators are
normal.
By observation
An alarm is
generated.
Exterior
The paint or
electroplated
coating on the
cabinet is intact.
By observation
The cabinet is
damaged or
deformed.
Repaint and repair
the shell.
Grounding
The ground point
properly connects
to the equipment
room ground bar.
By observation or
by using a
screwdriver or
wrench
The cable that
connects the ground
point and the
equipment room
ground bar is loose.
Secure the ground
point or replace the
ground cable.
4.2 Rectifying Common Faults
4.2.1 AC Failure
Possible Causes
The AC input power cable is faulty.
The AC input circuit breaker is OFF.
The power grid is faulty.
Measures
1.
Check whether the AC input cable is loose. If so, secure the AC input cable.
2.
Check whether the AC input circuit breaker is OFF. If so, handle the fault which caused
the AC input circuit breaker to turn OFF and then switch on the circuit breaker.
3.
Check whether the AC input voltage is lower than 50 V AC. If so, handle the power grid
fault.
4.2.2 AC Over Volt
Possible Causes
The AC overvoltage alarm threshold is incorrectly set on the SMU.