Lasers; Personnel Injuries; Device Damage - Symantec Shelf NetBackup 5220 Maintenance Manual

Lasers

When installing and maintaining equipment, observe standard laser safety
precautions to prevent personnel injury or device damage.

Personnel injuries

The laser emitted by the optical interface board is an invisible infrared ray, which
may cause permanent damage to human eyes.
During device maintenance, direct eye exposure to the laser light must be avoided.

Device damage

To prevent device damage when you operate the device, take the following
precautions:
Be sure you are using correct replacement batteries. Otherwise, an explosion
may occur.
Only use batteries of the same or a similar model as recommended

by the vendor.
 Deal with the waste batteries according to standard instructions.
Do not put a lithium battery into a fire.

Cap any unused optical interfaces and the optical connectors of

unused tail fibers.
 When removing the optical tail fiber that connects to an optical
port that is in use, cover the optical port on the device and the
optical connector of the tail fiber with dust-proof caps.
When performing a hardware loopback test on the optical

connector with the tail optical fiber, you must add an attenuator
to protect the optical transceiver from the received optical power.
When using the Optical Time Domain Effect Reflectometer

(OTDR), you must disconnect the optical tail fiber between the
peer device and the local device to protect the optical transceiver
from the optical power.
Safety information 17
Lasers