Table of Contents
Advertisement
Chapter 6: Troubleshooting
PWR 1 and PWR 2 LEDs
102
Problem: A DC power supply is connected to the switch but the
corresponding PWR 1 or PWR 2 LED on the front panel is off.
Solutions: The unit is not receiving power from the power supply or the
power is outside the operating range for the switch. Try the following:
Verify that the DC power source is powered on and operating
normally.
Review the DC power source's documentation to verify that it is
compatible with the switch. The power supply requirements for the
switch are given in "Power Supplies" on page 47.
Verify that the PWR 1 -PWR 2 connector is fully inserted into the
slot in the top panel of the switch.
Verify that the DC wires are securely connected to the PWR 1 -
PWR 2 connector on the switch and to the DC power supply.
Verify that the DC positive and negative wires from the power
supplies are connected to the correct connectors on the DC PWR
1 - PWR 2 connectors on the switch.
Verify that the DC power wires are connected to the PWR 1 - PWR
2 connector and not to the ALM IN or ALM OUT connector.
Try using a different DC power source.
Try replacing the DC power wires.
Try connecting the DC power source to a different device.
Test the output voltage from the power source to verify that it is
within the operating range of the switch.
Advertisement
Table of Contents
