ZXG10 BS21 (V2.2) Compact Outdoor BTS for GSM Maintenance Manual
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Confidential and Proprietary Information of ZTE CORPORATION
unplugging/plugging operation should be performed in accordance with
the relevant description in Appendix
A
of this manual.
7.
Isolating
When a part of the system fails, it can be isolated from other relevant
boards or racks to judge whether the fault is caused by mutual
influence. For example, the often-used isolating method is to remove
CMM module or transmission faults by self-looping the E1 interface of
the CMM module.
8.
Self-test method
It refers to fault judgment through self-test after the system or module
is powered on again. Generally, by powering on common modules for
self-test, we can find the indicators on the panel will flash regularly,
from which we can judge whether there are any problems in the
modules.
Generally, during actual operation, the above methods and accumulated
experiences of maintenance personnel are combined to remove faults in
the maintenance process.
Precautions on Daily
Maintenance
Please pay attention to the following points during daily maintenance:
1.
Normal temperature, humidity and a clean and tidy environment
should be kept for the equipment room, and the equipment room
should be dampproof and free of dust, rodents and insects.
2.
The primary power of the system should be stable and reliable.
Periodic check should be performed on the system ground and
lightning-protection ground. Especially before thunderstorm seasons
and after thunderstorms, the lightning-protection system should be
checked to guarantee that the facilities are in sound conditions.
3.
A perfect equipment room maintenance system should be formulated
to standardize daily work of the maintenance personnel. Detailed logs
should be prepared to record the daily running, version, data change,
upgrade and troubleshooting of the system for the convenience of fault
analysis and handling. In addition, shift records should be made to
differentiate individual responsibilities.
4.
It is prohibited to play online games or surf on the Internet at the PC
terminal or install, operate or copy any software irrelevant to the
system in the PC terminal. It is forbidden to use PC terminals for other
purposes.
5.
Right-based NMS (Network Management System) passwords should be
set, managed strictly and modified periodically. Such passwords are
available to the maintenance personnel only.
