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EKI-2525M & 2526M User Manual-V2.1-051507 20
Chapter 3 Troubleshooting
1. Power Input
Verify that is using the right power cord/adapter (+12~48 V
DC
), please don’t use the
power adaptor with DC output voltage higher than 48V, or it will burn this converter
down.
2. Cable
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).
Otherwise, use the 50/125 ~ 62.5µm fiber cable to connect the fiber port in multi-mode.
3. 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.