5 – Diagnostics/Troubleshooting
Chassis Diagnostics
5-2 59225-00 B
S
5.1.1
Input Power LED Is Extinguished
The Input Power LED illuminates to indicate that the switch logic circuitry is
receiving proper voltages. If the Input Power LED is extinguished, do the
following:
1. Inspect the power cords and connectors. Is the cord unplugged? Is the cord
or connector damaged?
Yes - Make necessary corrections or repairs. If the condition remains,
continue.
No - Continue.
2. Inspect the AC power source. Is the power source delivering the proper
voltage?
Yes - Replace the switch power supply/cord. If the condition remains,
contact your authorized maintenance provider.
No - Make necessary repairs. If the condition remains, contact your
authorized maintenance provider.
5.1.2
System Fault LED Is Illuminated
The System Fault LED illuminates to indicate that the switch logic circuitry is
overheating or that a POST error has occurred. The System Fault LED is always
accompanied by a Heartbeat LED error blink code. If the System Fault LED
illuminates, Identify the Heartbeat LED error blink pattern and take the necessary
actions. Refer to “Heartbeat LED Blink Patterns” on page 5-3.
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