Cabletron Systems SEH-34 - Manual (Page 53)

TROUBLESHOOTING
Page 5-3
Figure 5-1. LANVIEW LEDs
PWR (Green)
When this LED is on it indicates that the SEH is receiving power. If
this LED is off, it indicates a loss of input power. Check the input
power source (circuit breaker, fuse, etc.). If the proper source power is
present, the problem could be with the SEH.
MGMT (Green Flashing)
This LED flashes when an intelligent hub manages the SEH. If this
LED does not flash, an intelligent hub is not managing the SEH. If
you connect an intelligent hub to the SEH and the LED does not flash,
inspect the HubSTACK Interconnect cables for proper connections.
PWR
MGMT
CLN E
1
E
2
RCV
LNK
RCV
LNK
HubSTACK 10BASE-T HUB WITH LANVIEW®
SEH-24
24 23 22 21 20 19 18 17 16 15 14 13
12 11 10 9 8 7 6 5 4 3 2 1
24X
12X
LED NAME
PWR
(Power)
MGMT
(Management)
CLN
(Collision)
RCV
(Receive)
LNK
(Link)
LED COLOR
Off
Green (Solid)
Green (Flashing)
Off
Red
Yellow (Flashing)
Off
Green
Off
DEFINITION
No Power
Power
SEH Managed by an Intelligent Hub
SEH Not Managed
Collision
SEH is Receiving Data
No Activity
Link Established
No Link