Diagnostics And Troubleshooting; Switch Diagnostics; Input Power Led Is Extinguished; Switch Leds - HP StorageWorks 8/20q Installation And Reference Manual

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Diagnostics and Troubleshooting

Diagnostic information about the switch is available through the switch LEDs and the port LEDs. Diagnostic
information is also available through the CLI, QuickTools, Enterprise Fabric Management Suite, or Simple
SAN Connection Manager event logs and error displays.
This section also describes using maintenance mode to recover a disabled switch. See
switch using maintenance

Switch diagnostics

The 8/20q Fibre Channel Switch has three switch LEDs that are used for diagnostics: Input Power LED,
Heartbeat LED, and the System Fault LED
3
1 Input Power LED
3 Heartbeat LED
Figure 14

Switch LEDs

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:
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—Continue.
• No—Make necessary repairs. If the condition remains, contact your authorized maintenance
provider.
mode" (page 55).
(Figure
1
2
HP StorageWorks 8/20q Fibre Channel Switch Installation and Reference Guide
14).
2 System Fault LED
"Recovering a
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