Paradise Datacom 4 RU Chassis, Operation Manual

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48 201627 REV X 4 RU SSPA Chassis Operations Manual
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The user should check the booster board voltages on the front panel display. This
can be found under the system information portion of the main menu on the front
panel. The voltage should read approximately 28VDC for each of the fans in the
SSPA. If the booster voltage is lower than 25VDC, the user should check for a
power supply fault and follow the procedures to handle this problem.
3.0.4 Current Fault
In the case of a current fault, follow the tips below:
•
The user should check the current displayed on page 6 of the system information
menu of the front panel
display. If the amplifier is in the mute state, current drops
within a range of 0 to 5 A.
3.0.5 Power Supply Fault
In the case of a power supply fault, follow the steps below:
•
Check the power supply readings on the SSPA front panel. Observe any
fluctuations and record the level.
•
Mute the amplifier. Check the power supply readings on the SSPA front panel.
Sometimes muting the amplifier corrects the power supply fault.
•
Additional troubleshooting requires that the bottom panel be removed. Doing so
voids the warranty unless performed by an approved service technician. Contact
the factory before proceeding further.
3.0.6 Fan Fault
In the case of a fan fault, follow the tips below:
•
Inspect the fans.
•
The user should check the booster board voltages on the front panel display. This
can be found under the system information portion of the main menu. The voltage
should read approximately 28VDC for each of the fans in the SSPA.
•
If necessary, replace the fan (See
Section 7.1.1
).
3.0.7 Low RF Fault
In the case of a Low RF alarm, follow the steps below.
•
Check the forward RF level on the front panel readout under the system information
menu. If the user has access to a power meter or spectrum analyzer, this power
level can be verified by means of the output sample port on the front panel.
•
Compare this value to the forward RF alarm threshold level in the Fault Set-up
menu. If the Threshold level is higher than the actual RF output level, this will