Chapter 1 Routine Maintenance
2.
Verify that there are no abnormal device events. If there is any, locate the system
faults and resolve them in a timely manner.
– End of Steps –
1.1.6 Checking the Status of Indicators
Analyzing the status of indicators is a common method used when a fault is detected.
Maintenance personnel can locate and resolve the faults by observing the status of
indicators on each board panel.
For detailed information of the status of indicators, refer to "
".
1.2 Monthly Maintenance
1.2.1 Checking Power Supply
This procedure describes how to check the equipment's power supply to ensure that the
equipment can operate properly.
Steps
1.
Verify that the status of the power cabinet (Uninterruptible Power Supply (
)) is
normal.
2.
Verify that the air break switch power supply of the portal frame is normal.
3.
Verify that the rack, antenna feeder, IDU, ODU, and lightning protector are well
grounded.
4.
Verify that the power indicators of the following boards of the IDU are in normal status:
The OPWER indicators of the Radio Core Cross Modem Unit A (
) and Radio
Modem Expansion A (
) board.
– End of Steps –
1.2.2 Cleaning the Equipment
This procedure describes how to clean the equipment.
Communication equipment is likely to be contaminated after operating for a long time.
Cleaning the equipment regularly can reduce Bit Error Rate (
), fault rate, and board
failure rate by improving the heat dissipation capability of the equipment.
Steps
1.
If possible, power off the equipment, detach the circuit boards and components from
the equipment in accordance with the specified procedure, and then fully clean each
part of the equipment.
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