ICP DAS USA VERION 1.0 MSM-508FCS - Manual (Page 34)

Industrial Ethernet Layer 2 Managed Switch User Manual
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No power to the switch.
• Check for faulty power cord.
• Check for loose or broken power connections.
• Check connections to ensure the power and ground are attached to the correct terminals.
• Check for power loss or power surges at the AC power outlet.
• Check Voltage of power coming into PWR1 or PWR2 to ensure it is within +10 - +30V DC.
• Ensure there are no shorts between power and ground.
No link light on a switch port.
• Check for faulty or loose Cables(both ends). Visually inspect for loose or faulty connections at all
connectors and cables. If that does not correct the problem, try replacing the cable.
• Check the other device to see if it is powered up and operating correctly.
• Try moving the Ethernet cable that has the possible faulty connection to another port in the
switch and check for link light.
Master LED keep on Flashing
• Check if the topology is accurate.
• Check if network is functioning properly.
• Check if power supply is connected properly.
• Check if there is devices failure exit (including ring switch or other devices connected to the
switch)
• Check if MAC address is duplicated or illegal.
• Check if the length of recovery time (rtime) is adequate; if the recovery time is too short, set a
longer time interval.
• Check if the firmware is the newest version , please go to
http://www.icpdas.com/download/download-list.htm for downloading newest firmware version.
• Check if the firmware upgrading process is completed. If not, redo the upgrading sequence to
complete firmware upgrading process.