RRU
Hardware Maintenance Guide
2 Preventative Maintenance Items for an RRU
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All CPRI optical fibers are free from wear, cuts, cracks, or other damage.
All screws are tightened on the cover plate of the maintenance cavity.
All RET cables (optional) are free from wear, cuts, cracks, or other damage.
All RET cable (optional) connectors are sealed properly.
All alarm cables (optional) are installed and free from any damage.
All monitoring cables (optional) are installed and free from any damage.
If any of the requirements in the checklist is not met, perform the following corrective actions.
1. Tighten all connections.
2. Report the problems to the supervisor so that the qualified engineers can be assigned to
maintain the parts on the tower.