ECI XDM-300, Installation And Maintenance Manual

Page: 203 / 266

XDM-300 Installation and
Maintenance Manual Maintenance
417006-2311-0H3-A00 ECI Telecom Ltd. Proprietary 4-13
Troubleshooting Power Problems
Table 4-3: Troubleshooting power problems
No. Symptoms Probable cause Corrective actions
Both main and
backup power
sources failed. 1. Check the site power distribution system.
2. Check the DC voltage at the main and backup power
terminals of the RAP.
3. If the voltage is not within the correct range, check
cable connections up to the DC power distribution
panel, and make sure no fuses are blown.
4. Check the voltage supplied by the main and backup
power sources.
5. Check the power connections to the RAP.
6. Check the circuit breakers in the RAP and replace if
necessary.
1 RAP POWER
ON indicator is
off.
Equipment problem. 1. Check the voltage at the MXC300 end of each power
cable. Replace the cable or repair the RAP if there is
no voltage present.
2. If after checking (as explained above) and
reconnecting a cable to the equipment, the circuit
breaker trips again, replace the corresponding
MXC300 card.
3. If the problem occurs again after Step 2, remove all
the cards and modules from the shelf and reinsert
them one by one until you find the component
causing the circuit breaker to trip. Replace that
component.
2 MXC300
ACTIVE
indicator is off.
No input power to
the corresponding
unit. 1. Check the corresponding circuit breaker in the RAP;
reset any tripped breaker.
2. Check the circuit breakers in the RAP and replace if
necessary.
3. If the circuit breaker trips again, disconnect the cable
protected by the corresponding circuit breaker from
the equipment and check the voltage polarity.
4. Check the power cable condition and make sure that
the cable is not damaged and does not cause short
circuits.
5. Check proper cable connection at both ends.
3 MXC300 FAIL
indicator lights.
Technical failure in
the corresponding
unit. Replace the unit.