Troubleshooting guide

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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.
Do not place the Switch in an undesirable environment.
Using the Switch in the following locations might shorten the life of the Switch or result in
Switch malfunction.
• An area with salty air, such as a coast
• An area where corrosive gases are present, such as a hot-springs area
• An area where oily smoke is present
• An area where continuous vibrations are present
Ensure that voltage drop does not occur in the power facility due to inrush
current.
• Turning on the Switch causes inrush current. Ensure that voltage drop does not occur in
the power facility due to the inrush current. Voltage drops affect not only the Switch, but
also the devices connected to the same power facility.
Turn off the power before connecting or disconnecting the power cable.
• Turn off the power of AX3800S, AX3600S, or AX2400S series switches before
connecting or disconnecting the power cable of an AC model, an AC (PoE) model, and an
EPU model.
• Turn off the power of a power supply unit before connection or disconnection of the power
cable or the connector of the cable for a redundant power model.
• For a standby power cable, turn off the power of the power supply module first.
When replacing a power supply unit or a fan unit with the switch turned on,
observe the time limit.
When performing the following operations with the switch turned on, you must remove and
replace the unit within three minutes. If the operation takes longer than three minutes, the
temperature inside the switch will rise and might cause a fault.
• Replacing a power supply unit or a fan unit of a redundant power model AX3630S or
AX3640S
• Replacing a fan unit of a redundant power model AX3650S
When performing the following operations with the switch turned on, you must remove and
replace the unit within one minute. If the operation takes longer than one minute, the
temperature inside the switch will rise and might cause a fault.