User's Manual Part 3
Troubleshooting OS-1933-E3-003
044-05243 Rev A 4-3
Rectifier Module with a Red LED or Individual Faults
– Any rectifier module fault is remedied by replacing a known good module with the suspected unit. Refer to
the Status/Alarm page for exact details. Reference the Rectifier Module section in Chapter 2 for the procedure
on Rectifier Module replacement.
RECT ALL COMM Fault
Could to the result of a bad RJ45 interface cable at the rear of the system linking the controller with the power
system. A non-crossover network cable could be temporarily installed to validate the connection.
Rectifier Voltage Fault
Measure the AC input and/or DC Output (all 4 fused outputs) and validate that the voltage is within the
specified range detailed in section 5.
Fans Not Operating –
• Check the status of the fans on the Status/Dynamic page.
• The fan of a specific door will not operate if that door is not secured. Ensure that the front and rear
doors are secured and that both fans are operating any time there is a site visit.
• The fan circuitry has an auto-resettable fuse. Unplugging a bad fan and installing a known good fan
should reset the fuse. The intrusion plunger must be pulled to the out position to simulate a door clo-
sure and allow the fan to operate.
• The OS System components are not >41 C. Fans do not operate below this threshold.
RFCU Alarms
Status/Alarm Page Faults – Bypass V, 5V, LNA Alarm 1/2 could be an indication of a bad RFCU. Replace the
RFCU module per the procedure in the RFCU section of Chapter 2.
RF Performance Issues -
• No power out or gain:
• View the Status/Alarm page correct all detected alarms
• Disable the MCPA to force the sector into bypass, using external measuring equipment validate the
RF passing through the OS System.
• Disable the MCPA first then reseat the MCPA and RFCU modules, enable the MCPA
• Replace the MCPA and/or RFCU with a known good module.