Cabletron Systems EMME User Manual page 103

LED Color
RCV Yellow
A,B,C,D
(Receive)
CLN Red
(Collision)
ON Yellow
(AUI
ports)
PWR Green
(Power -
AUI ports)
EMME USER'S GUIDE
Figure 7-2. LANVIEW LEDs (Continued)
Description
Light flashes to
indicate that a
segment is
receiving a
packet.
Collision
detected on a
segment. When
the LAN is
operating
normally, this
LED will flash
occasionally.
This LED lights to
indicate which of
the two AUI ports
is active. Only
one ON LED can
be on at a time.
This LED lights to
indicate that the
AUI port is
receiving power.
Both AUI ports'
PWR LEDs
should be on.
INTERPRETING THE LANVIEW LEDS
Recommended Action
If none of the receive lights
are flashing, the EMME is
not receiving packets on
any of the segments.
Check that each module is
firmly installed in the
MMAC.
Ensure that all ports are
enabled.
Excessive flashing, or a
solid light, indicates an
inordinate amount of
collisions.
Ensure that the SQE test is
disabled for any transceiver
connected to the EMME's
AUI port. Check cabling for
data loops or defective
cables.
If this LED is not lit for
either AUI port, try re-
initializing the EMME by
pressing the reset button.
If the LEDs still do not light,
call Cabletron Technical
Support.
If the LED is off for either
AUI port, that port is not
receiving power.
Check the fuse associated
with the AUI port.
Error Condition/
Page 7-3