Troubleshooting guide

xxiv
When carrying or packing a Switch and its optional modules, wear a wrist
strap to protect against static electricity.
• Be sure to wear an antistatic wrist strap. If you handle the Switch without wearing an
antistatic wrist strap, the Switch might be damaged by static electricity.
When removing optional modules, attach blank panels.
• When removing optional modules, attach blank panels. If you use the Switch without
attaching a blank panel, airflow through the Switch cannot be maintained. If airflow is not
maintained, the temperature inside the Switch rises, resulting in a failure.
Be careful when installing an optional module.
• When installing an optional module, follow the procedures below. Not doing so could
result in a failure.
1. Open the levers as shown in the figure.
2. Hold the levers, and push the optional module slowly until the levers touch the Switch.
3. Insert the optional module all the way by using the levers. When moving the levers, move
them slowly (by taking at least one second) without using excessive force.
Before removing an optional module, loosen the screws completely.
• The levers are used to remove a basic control unit, basic switching unit, or network
interface unit. If the screws are not loosened completely, the optional module might be
damaged when the levers are opened.
When carrying and packing optional modules, handle them carefully.
• Do not touch the installed components and the solder surface when carrying or packing an
optional module, such as a basic control unit, basic switching unit, network interface unit,
memory card, transceiver, or power supply unit. Also, when storing an optional module,
use an antistatic bag.
Do not place a Switch in a high-temperature location.
• Do not place a Switch in direct sunlight or near a heater or other heat-generating apparatus.
Do not use a TV or a radio near a Switch.
• Do not use a TV or a radio near a Switch. Placing a Switch near a TV or a radio could affect
both devices. If you hear noise on the TV or radio, do the following:
1. Place the Switch as far away as possible from the TV or radio.
2. Adjust the orientation of the TV or radio antenna.
3. Use separate outlets.