ZyXEL Communications MES3500-24, Руководство пользователя

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MES3500-24/24F User’s Guide
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H A P T E R
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Troubleshooting
This chapter offers some suggestions to solve problems you might encounter. The potential
problems are divided into the following categories.
• Power, Hardware Connections, and LEDs
• Switch Access and Login
• Switch Configuration
45.1 Power, Hardware Connections, and LEDs
The Switch does not turn on. None of the LEDs turn on.
1
Make sure the Switch is turned on (in DC models or if the DC power supply is connected in AC/DC
models).
2
Make sure you are using the power adaptor or cord included with the Switch.
3
Make sure the power adaptor or cord is connected to the Switch and plugged in to an appropriate
power source. Make sure the power source is turned on.
4
Turn the Switch off and on (in DC models or if the DC power supply is connected in AC/DC models).
5
Disconnect and re-connect the power adaptor or cord to the Switch (in AC models or if the AC
power supply is connected in AC/DC models).
6
If the problem continues, contact the vendor.
The ALM LED is on.
1
Turn the Switch off and on (in DC models or if the DC power supply is connected in AC/DC models).
2
Disconnect and re-connect the power adaptor or cord to the Switch (in AC models or if the AC
power supply is connected in AC/DC models).
3
If the problem continues, contact the vendor.