USN9810 Parts Replacement Manual

1. Application Description

1) Service Description

Operators need to replace the faulty parts during the hardware upgrade, capacity expansion, and troubleshooting.

• Hardware upgrade and capacity expansion

Operators need to replace parts when a hardware upgrade is required after new functions are added to boards or other equipment or when the capacity of existing sites is expanded.

• Fault troubleshooting

After detecting an alarm caused by hardware faults, operators need to replace the faulty parts.

2) Documentation Description

The manual provides guidance for you to identify and replace faulty parts in two aspects: Parts Replacement Scope and Operation Procedure.

The USN9810 parts replacement scope includes:

The operation procedure is as follows:

Precaution: To ensure that communication services are continuously provided to subscribers, parts are replaced without being powered off in most cases. The maintenance personnel must strictly follow the basic operation process described in this manual to ensure safe running of the equipment and minimize the impact of replacement on services.

2. Highlights

a. The scenario analysis is complete and clear.

b. The parts are well classified, and operation procedures for different models of boards or subracks are detailed.

c. Specific contents and precautions are clearly stated, which makes it easier for you to use the manual.

3. Reference Documents