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HubSTACK
SEHI-24
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 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 SEHI.
CPU
This LED alternates from red to green 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.
SEHI USER'S GUIDE
10BASE-T HUB
WITH
PWR
CPU
RESET
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
LANVIEW®
24 22 20 18 16 14 12 10 8
RCV
LNK
RCV
LNK
23 21 19 17 15
13
11 9 7
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
USING LANVIEW
24X
6
4 2
E2
E1
5 3
1
23X
1490_19
5-3
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