3
T
ROUBLESHOOTING
Solving EPS
Problems
If the LEDs on the EPS indicate a problem, see Table 6 for some suggested
solutions.
Table 6
Solving EPS Problems
Problem
Possible Cause
Suggested Action
A Power LED does not
light, and you have NO
external DC voltage
supply.
Loose AC power
cable
■
Verify that the power cable is firmly
connected to the EPS.
■
Verify that the other end of the
power cable is firmly connected to
the supply outlet.
No AC available
at outlet
■
If both of the connections are
secure and there is still no power to
the unit, verify (using a voltmeter or
some other device that uses AC
power) that power is available at
the AC outlet. If the outlet has no
power available, check for a
building power problem such as a
burned-out fuse or an open circuit
breaker.
Faulty power
cable
■
If power is available at the AC
outlet, but there is still no power to
the EPS, you may have a faulty
power cable. Substitute another
power cable.
Faulty EPS power
supply or faulty
LED
■
If the power cable is not faulty, you
may have a faulty power supply
within the EPS, or a faulty power
LED. Contact an authorized 3Com
Reseller.
