146
Operating Manual
BX600
S3
Troubleshooting and Tips
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14.2
Front or Rear Identify/Fault LED Blinks
Amber
If the front or rear identify/fault indicator blinks amber (see
section “Operating
and Indicator Elements of the Basic Unit” on page 50
) one of the malfunctions
described below may have occurred in the system:
One of the power supply units fails
The PSU status LED is unlit and/or the PSU fan failure LED blinks green if there
is an error in the corresponding power supply unit, e.g. (see also
figure “Power
supply unit: LEDs” on page 132
):
–
General failure (alert or fan #1 shutdown)
–
Overtemperature (any of the fans are not working properly in the correspon-
ding unit)
–
Overcurrent
–
Over- or undervoltage
–
The PSU is reaching the end of its life or is operating in an environment
which exceeds the specified limits.
Ê
Check the PSU status and/or fan failure LEDs to identify the defective unit
and exchange it (see
section “Replacing a Power Supply Unit” on page 133
).
One of the fans in the rear fan modules has failed
Even though the system can continue operating without one of the fans in the
rear fan modules, you should:
Ê
Exchange the defective front fan module within a reasonable amount of time
(see
section “Replacing the Fan Unit” on page 141
and
section “Replacing
a Fan in the Unit” on page 143
).
Switch blade fails
The failure LED of the switch blade lights up if there is a general error there.
Ê
Check the switch blade failure LEDs to identify the defective unit.
Ê
If the switch blade is still indicated as defective, exchange it (see
section
“Installing an I/O Blade” on page 96
).