TP48200A-HT19C3 and TP48200A-HT19C4 Telecom
Power
User Manual
4 Maintenance
Issue 03 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
46
Maintenance
Item
Check Whether
Check Method
Repair When
Measures
normally.
and the
temperature.
cannot effectively
cool the air.
TEC04C.
Electrical
specifications
The output voltage
is normal.
Multimeter
The battery circuit
voltage or load
circuit voltage
exceeds its
threshold.
For details, see 4.2
Rectifying
Common Faults.
Preventive
maintenance
inspection (PMI)
Indicators are
normal.
By observing
An alarm is
generated.
Appearance
The paint or
electroplated
coating on the
cabinet flakes off or
has scratches.
By observing
The surface is
damaged or
distorted.
Repaint or repair
the shell.
Grounding
The ground point
properly connects
to the ground bar in
the equipment
room.
By observing the
grounding and
using a screwdriver
or wrench.
The cable
connecting the
ground point and
the ground bar in
the equipment room
is loose or
damaged.
Secure the ground
point or replace the
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.