Paradise 205486 REV F - Manual (Page 68)

68 208495 REV C Operations Manual, HPA2, Compact Outdoor SSPA
7.2.1 Fan Replacement
Older models of the Compact Outdoor SSPA were fitted with a two fan cooling fan assembly.
The newer models utilize a three fan cooling fan assembly.
While the fan interface connectors for the two fan and three fan tray assemblies are identical,
they should not be used interchangeably.
If your Compact Outdoor SSPA was shipped from the factory with the three fan air intake tray,
any maintenance requiring replacement of the fans should only use the three fan kit (L205192
-1). The three fan kit requires 12 VDC directly from the buss bar and draws 5.9 A (70 W).
If your Compact Outdoor SSPA was shipped from the factory with the two-fan air intake tray,
any maintenance requiring replacement of the fans should only use fan kit (L201814-1). This
kit replaces one fan on the fan tray assembly. The two fan kit requires 28 VDC from the
booster circuit card assembly and draws 0.7 A (19 W).
Note: Failure to use the proper fan tray will damage your amplifier!
It is possible to modify an older Compact Outdoor SSPA to be fitted with a three fan cooling
fan assembly in place of a two fan assembly. This should be done by a Teledyne Paradise
Datacom technician, using the procedure outlined in drawing number 206573.
7.3 Troubleshooting guide
The following section describes solutions for some of the most common issues with the
operation of the Compact Outdoor SSPA.
7.3.1 Unit doesn’t power up
Cooling fans do not spin, and alarm LED lamps are off.
Possible causes: AC power is off; Unit which requires 220V AC operation is being powered
from 110V AC grid; Unit is connected to an inadequate circuit breaker. Unit has no connection
between chassis and earth ground or has inadequate earth ground.
Possible solutions: Check SSPA unit datasheet for AC power requirements. Provide the
specified AC power for the unit. Re-check continuity between unit’s chassis ground and earth
ground. Earth ground connection is required for normal SSPA operation!
7.3.2 Unit powers on, LED lamp glows red
Possible causes: SSPA peripheral alarms (Auxiliary, Spare, Forward RF etc) are set as
Major alarms. Summary Alarm is caused by external reference BUC module.
Possible solutions: Connect to the SSPA unit via the Universal M&C software and disable
peripheral alarms. In the case where the unit is equipped with an externally referenced BUC,
provide the specified reference signal to the SSPA IF input.