HP StorageWorks SN6000 Fibre Channel Switch Installation and Reference Guide 51
4 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, or Simple SAN Connection Manager event logs
and error displays. This section describes the following types of diagnostics:
• Switch diagnostics, page 51 describes the Input Power LED and System Fault LED indications.
• Power-On self test diagnostics, page 52 describes the Heartbeat LED and the port Logged-in LED
indications.
• Transceiver diagnostics, page 56 lists the transceiver diagnostic information that is available.
This section also describes using maintenance mode to recover a disabled switch. See ”Recovering a
switch using maintenance mode” on page 57.
Switch diagnostics
The SN6000 Fibre Channel Switch has three switch LEDs that are used for diagnostics: Input Power LED,
Heartbeat LED, and the System Fault LED (Figure 20).
Figure 20 Switch LEDs
The following conditions are described in this section:
• Input power LED is extinguished, page 51
• System fault LED is illuminated, page 52
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.
1 Input Power LED 2 System Fault LED
3 Heartbeat LED
