59265-00 A 5-1
5 Diagnostics/Troubleshooting
Diagnostic information about the switch is available through the chassis LEDs and
the port LEDs. Diagnostic information is also available through the CLI, or
QuickTools event logs and error displays. This section describes the following
types of diagnostics:
Chassis Diagnostics describes the Input Power LED and System Fault LED
indications.
Power-On Self Test Diagnostics describe the Heartbeat LED and the port
Logged-In LED indications.
Power Supply Diagnostics describes Power Supply Status LED and Power
Supply Fault LED indications.
This section also describes using maintenance mode to recover a disabled switch.
Chassis Diagnostics
Chassis diagnostics are indicated by the chassis LEDs as shown in Figure 5-1.
Figure 5-1 Chassis LEDs
The following conditions are described:
Input Power LED Is Extinguished
System Fault LED Is Illuminated
Input Power LED
(Green)
Heartbeat LED
(Green)
System Fault LED
(Amber)
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