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Comtech EF Data XPA-200 User Manual

Page 76

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XPA200-7984-I-OPT1, X-Band SSPA

Maintenance and Troubleshooting

Maintenance and Troubleshooting

XPA200-7984-I-OPT1, Rev.2

6-4

!

+5 VDC:

A fault ("FT") indicates a voltage level exceeding

+/- 10% of the power supply voltage. Check the

output of the +12 VDC Power Supply Module, check

for other module faults, and check all

connections. If the fault still exists, remove

the SSPA and return it to COMTECH for repair.

6.3.1.2

DC Power Supply Modules (continued)

!

-5 VDC:

A fault ("FT") indicates a voltage level exceeding

+/- 10% of the power supply voltage. Check the

output of the -12 VDC Power Supply Module, check

for other module faults, and check all

connections. If the fault still exists, remove

the SSPA and return it to COMTECH for repair.

6.3.1.3 Temperature Fault

!

SSPA OVER TEMPERATURE FAULT:

A fault ("FT") indicates that the SSPA is

over temperature. Make sure adequate ventilation

is supplied to the unit, and that the airflow path

is not obstructed. (See installation

instructions, Sect. 2). Also, make sure the

ambient air is within the 0 - 50 degree C

operating limits. If the unit still shows a fault

after following these procedures, turn the prime

power switch off and return the SSPA to COMTECH

for repair.

6.3.1.4 Monitor and Control Board

!

Loss of LCD or LED Displays:

Check the 5V LED indicator on the Monitor and

Control Board. If the 5V LED indicator is not

illuminated, check the SSPA prime power and

DC power supply connections to make sure they are