Cabletron Systems SEHI-32 - Manual (Page 56)

TROUBLESHOOTING
Page 5-3
Figure 5-1. LANVIEW LEDs
PWR
When this green LED is on it indicates that the SEHI is receiving
power. If this LED is not on, 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 SEHI.
CPU
This LED alternates from red to green to during power up. After the
boot is complete, the LED blinks green. A blinking green LED
indicates normal operation. A red LED indicates a faulty processor.
Note: “Flashing” indicates an irregular LED pulse.
“Blinking” indicates a steady LED pulse.
LED NAME
PWR
(Power)
CPU
(Central Processing Unit)
CLN
(Collision)
RCV
(Receive)
LNK
(Link)
LED COLOR
Off
Green (Solid)
Off
Green (Flashing)
Green (Blinking)
Red (Solid)
Red
Yellow (Flashing)
Off
Green
Off
DEFINITION
No Power
Power
CPU in BOOT Process
CPU Initializing
CPU Functioning
CPU Not Functioning
Collision
SEHI is Receiving Data
No Activity
Link Established
No Link
PWR
CPU
CLN E
1
E
2
RCV
LNK
RCV
LNK
HubSTACK 10BASE-T HUB WITH LANVIEW®
SEHI-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
COM
RESET