Mitsubishi Electric MELIPC MI5000 Series User Manual page 212

Disconnect stations
Check the following items.
Check item
Is the product or other station D LINK LED off or flashing?
Are module peripheral temperatures outside of usage ranges?
Stations repeatedly disconnect and reconnect
Check the following items.
Check item
Does the used Ethernet cable meet 1000BASE-T specifications?
Is the distance between stations within specifications?
Is the installation situation (bend radius) within specifications?
Is the Ethernet cable broken?
Is the switching hub being used operating correctly?
Communication is unstable
Check the following items.
Check item
Is the product or other station L ERR LED on?
Are module peripheral temperatures outside of usage ranges?
Is this being affected by noise?
APPX
210
Appendix 1 Troubleshooting by Symptom
Corrective action
• If the product D LINK LED is off or flashing, perform troubleshooting.
• If the other station D LINK LED is off or flashing, perform troubleshooting for
the corresponding module.
Remove heat sources, and ensure peripheral temperatures are within usage
ranges.
Corrective action
• If the product D LINK LED is off or flashing, perform troubleshooting.
• If the other station D LINK LED is off or flashing, perform troubleshooting for
the corresponding module.
Ensure the distance between stations is within specifications.
Set the bend radius within specifications.
Replace the Ethernet cable.
• Check that a switching hub that meets specifications is being used.
• Turn the switching hub power supply OFF/ON, and restart the switching
hub.
Corrective action
If the L ERR LED is off or flashing, perform troubleshooting. If the L ERR LED
of the other station is off or flashing, check and perform troubleshooting for the
corresponding module.
Remove heat sources, and ensure peripheral temperatures are within usage
ranges.
Check the wiring status.