MES-3728 User’s Guide
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CHAPTER 37
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
37.1 Power, Hardware Connections, and LEDs
V 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.
V 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.
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