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HubSTACK
SEHI-24
RESET
LED NAME
PWR
(Power)
CPU
(Central Processing Unit)
CLN
(Collision)
RCV
(Receive)
LNK
(Link)
Note: "Flashing" indicates an irregular LED pulse.
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.
10BASE-T HUB
WITH
PWR
CPU
CLN
COM
LED COLOR
Off
Green (Solid)
Off
Green (Flashing)
Green (Blinking)
Red (Solid)
Red
Yellow (Flashing)
Off
Green
Off
"Blinking" indicates a steady LED pulse.
Figure 5-1. LANVIEW LEDs
TROUBLESHOOTING
LANVIEW®
RCV
LNK
24 23 22 21 20 19 18 17 16 15 14 13
RCV
LNK
12 11 10 9 8 7 6 5 4 3 2 1
E
2
E
1
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
Page 5-3
24X
12X
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