Advantech EKI-7758F User Manual

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EKI-7758F User Manual                                                 84 
 
Chapter 4 
Troubleshooting 
 
Verify that is using the right power cord/adapter (+12~48V
DC
), please don’t use the 
power adaptor with DC output voltage higher than 48 V, or it will burn this converter 
down. 
 
Select the proper UTP cable to construct user network. Please check that is using the 
right cable. Use Unshielded Twisted-Pair (UTP) or Shielded Twisted-Pair (STP) cable 
for RJ-45 connections: 100 Category 3, 4 or 5 cable for 10 Mbps connections or 100 
Category 5 cable for 100 Mbps connections. Also, be sure that the length of any 
twisted-pair connection does not exceed 100 meters (328 feet). 
 
 
Diagnosing LED Indicators 
The switch can be easily monitored through panel indicators, which describes common 
problems user may encounter and where user can find possible solutions, to assist in 
identifying. 
If the power indicator does not light up when the power cord is plugged in, user may 
have a problem with power cord. Then check for loose power connections, power 
losses or surges at power outlet. If user still cannot resolve the problem, contact the 
local dealer for assistance. 
If the Industrial switch LED indicators are normal and the connected cables are correct 
but the packets still cannot transmit, please check your system’s Ethernet devices 
configuration or status.