Internet Router Hardware Guide

Troubleshooting Hardware Components
3. If the spare power s upply also does not work, connect the router to a different
power source. You might also try replacing the power cord or cable. For
instructions, see “Disconnecting and Connecting Power” on page 200 (you do
not need to disconnect and reconnect the grounding cable).
4. If you cannot determine the cause of the problem or need additional assistance,
see “Juniper Networks Technical Assistance Center” on page 212.
Troubleshooting the Power System 217