Diagnosing with the LEDs
LED Patterns for General Switch Troubleshooting
1. Check in the table for the LED pattern you see on your switch.
2. Refer to the corresponding diagnostic tip on the next few pages.
PSU1/PSU2 LEDs
Off with power cords
plugged in
OffEither the PSU1 or
PSU2 LED is off but not
both.
On or flashing
amberEither the PSU1 or
PSU2 LED is on/flashing
amber, but not both.
Flashing greenEither the
PSU1 or PSU2 LED is
on/flashing green, but not
both.
On green
On green
On green
On green
Diagnostic Tips
Tip
Problem
1
Both switch power supplies
are not plugged into an active
AC power source.
2
The PSU with the LED off is
not plugged into an active AC
power source or has failed.
PSU1,
Global Status
PSU2,
LED
Fan LED
-
-
Flashing amber
Flashing
amber
Flashing amber
Flashing
amber
Flashing amber
Flashing
amber
Flashing amber
Flashing
amber
Flashing amber
-
On green
-
On green
-
Solution
Verify the AC power source works by plugging another device into
the outlet, try plugging the power supplies in different outlets, or try
different power cords.
If the problem is still not resolved, both power supplies may be
faulty.
Verify the power cord is plugged into an active power source and to
the power supply. Make sure these connections are snug.
If the PS1/PS2 LED is still not on, verify the AC power source works
Fan tray
Port LED
LED
-
-
-
-
-
-
-
-
Flashing
-
amber
-
Flashing amber
-
Off with cable
connected
-
On, but the
port is not
communicating
Diagnostic
tip
1
2
3
4
5
6
7
8
Troubleshooting
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