Huawei OptiX OSN 3500 Routine Maintenance page 16

Precautions of Maintenance Operations
Precautions for Laser Safety

The unused optical interface and optical connector should be
1.
covered with optical caps
Cleaning the optical interface and fiber jumper connector
2.
Precautions for the loop back operation of the optical interface
3.
board:using attenuator
Precautions for replacement of optical interface board:pull off the
4.
optical fiber from the circuit board first
16