Troubleshooting, 1 power, hardware connections, and leds, Chapter 56 troubleshooting – ZyXEL Communications IES-708-22A User Manual
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IES-708-22A User’s Guide
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H A P T E R
56
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
•
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56.1 Power, Hardware Connections, and LEDs
V
The IES-708-22A does not turn on. None of the LEDs turn on.
1 Make sure you are using the power adaptor or cord included with the IES-708-22A.
2 Make sure the power adaptor or cord is connected to the IES-708-22A and plugged in to
an appropriate power source. Make sure the power source is turned on.
3 Disconnect and re-connect the power adaptor or cord to the IES-708-22A.
4 If the problem continues, contact the vendor.
V
The ALARM/ALM LED is on.
1 Disconnect and re-connect the power adaptor to the IES-708-22A.
2 Use the statistics monitor command to verify the cause of the alarm.
2a If the unit is overheated, ensure that the IES-708-22A is installed in a well-
ventilated area. Keep the bottom, top, and all sides clear of obstructions and away
from the exhaust of other equipment.
2b If the voltage levels are outside the allowed range, take a screenshot of the statistics
monitor command display, and contact the vendor.
3 If the problem continues, contact the vendor.
V
One of the LEDs does not behave as expected.