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TP48200A-DT19D1 Telecom Power User Manual

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Routine Maintenance

Routine Maintenance

Perform routine maintenance based on site requirements. The recommended maintenance interval is six months. If any fault occurs, rectify it in a timely manner.

Do not maintain devices on raining days, preventing water from entering and damaging devices.

Table 4-1 Routine maintenance checklist

Maintenance Item

Check Whether

Check Method

Repair When


Door lock

The door lock is damaged.

By observation or by locking and unlocking the door

The door lock is damaged.

Replace the door lock.


Dust accumulates on the fan.

By observation

Thick dust accumulates on the fan.

Clean up the dust.

The fan is intact, and the rotation speed, noise, and vibration are in normal ranges.

By observing or listening to the fan

The fan is damaged, the vibration is abnormal, or the noise is loud.

Replace the fan.


The heater works properly.

By observation or by checking the temperature

The heater is damaged and cannot effectively heat the air.

Replace the heater.

TCUA control board

The TCUA control board works properly.

By observation or by checking the indicator and alarms

The TCUA control board does not work properly.

Replace the TCUA control board.


The TEC works properly.

By observation or by checking the fan and temperature

The TEC is damaged and cannot effectively cool the air.

Replace the TEC.


The output voltage is normal.


The battery low voltage disconnection (BLVD) or load low voltage disconnection (LLVD) voltage exceeds the threshold.

For details, see Rectifying Common Faults.

Preventive maintenance

Indicators are normal.

By observation

An alarm is generated.


The paint or electroplated coating on the cabinet is intact.

By observation

The cabinet is damaged or deformed.

Repaint and repair the shell.


The ground point properly connects to the equipment room ground bar.

By observation or by using a screwdriver or wrench

The cable connecting the ground point and the equipment room ground bar is damaged or loose.

Secure the ground point or replace the ground cable.

Updated: 2019-11-27

Document ID: EDOC1000078784

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