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Chapter 6: Troubleshooting
6-4 SEH100TX User’s Guide
MGMT
This LED flashes when an intelligent hub is managing the SEH. If this
LED is not flashing, an intelligent hub is not managing the SEH. If an
intelligent hub is attached to the SEH and the LED is not flashing, inspect
the HubSTACK interconnect cables for proper connection.
CLN
When this red LED flashes, it indicates that a collision has occurred on
one of the ports.
RCV
When a yellow RCV LED flashes, it indicates that the SEH is receiving
data packets from the associated port segment. Each SEH port has a
corresponding RCV LED:
• Network Ports: RCV LEDs 1-22
• EPIM 1: RCV LED E1
• EPIM 2: RCV LED E2
LNK
When a green LNK LED is on, it indicates an established link between
the associated port and the device at the other end of the segment. The
LNK LED remains on as long as a link is maintained. Each SEH Network
Port (ports 1-22) has a corresponding LNK LED.