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Chapter 5 Troubleshooting the System Hardware
Identifying Problems Using Trouble Indicators and Status LEDs
5-16
Cisco Wide Area Application Engine 7326 Hardware Installation Guide
OL-6831-02
Power Supply LEDs
The AC power LED on the power supply provides status information about the
power supply. Table 5-2 describes the AC power LED.
System Error LED
If the system error LED on the front of the device is on, one or more LEDs inside
the device might be on. Use the Light Path Diagnostic panel to quickly identify
the type of error that occurred. For LED locations, see Figure 5-1.
Your device is designed so that LEDs remain on when the device shuts down as
long as the power supply is operating properly. This feature helps you to isolate
the problem even if an error causes the device to shut down.
Table 5-2 Power Supply LED
AC Power LED Description and Action
On The power supply is on and operating correctly.
Off There is an AC power problem. Possible causes are:
1. There is no AC power to the power supply.
Verify these items:
a. The electrical cord is properly connected to
the device.
b. The electrical outlet functions properly.
2. Disconnect the ribbon cable from connector J25
on the system board. If the AC power LED comes
on, see the “Undetermined Problems” section on
page 5-25.
3. The power supply has failed and needs to be
replaced. Have the system serviced.