LESSON SUMMARY: This lesson is designed to assist the user in troubleshooting Output Station Modules (OSMs) and being able to identify which OSMs are working and which OSMs should be replaced.
Special Tools Needed: Phillips Screwdriver
⚠ CAUTION: THIS LESSON MAY INCLUDE INSTRUCTIONS TO TEST HAZARDOUS VOLTAGES (120V-240V) THAT CAN CAUSE SERIOUS INJURY OR DEATH. IT IS RECOMMENDED THAT A LICENSED ELECTRICIAN BE CONTRACTED TO PERFORM SUCH TESTS.
🛑 STOP: ALWAYS TURN OFF THE POWER TO THE SATELLITE BEFORE REMOVING OR INSTALLING COMPONENTS.
If a PAR+ or PAR+ES Timing Mechanism is displaying an error message of “Incompatible OSM”, an incorrect number of stations, or if you are unable to manually toggle on a station from an Output Station Module, it is likely that one or more of your Output Station Modules are damaged. Follow the guided troubleshooting steps below to determine which Output Station Module(s) require replacement.
*Note: Before testing each Output Station Module, visually inspect all connectors and ribbon cable ends for any signs of corrosion. Corrosion on connectors and/or ribbon cables can cause functionality issues for Output Station Modules down-line, resulting in the Timing Mechanism displaying the error message “Incompatible OSM” or an incorrect number of stations.
Before proceeding, please make sure you have a known-working Timing Mechanism and Power Interconnect Board installed in the satellite location where you will be testing the Output Station Modules.
Output Station Module Troubleshooting
Part One
Start by powering off the satellite using the On/Off rocker switch located on the front of the Power Supply Assembly.
Using a Phillips screwdriver, unscrew the mounting screws used to hold the Output Station Modules in place.
Next, remove all Output Station Modules from the satellite, with the exception of the Output Station Module located in the first position. The Output Station Module located in the first position is located directly below the Power Interconnect Board. The Output Station Module in the first position runs stations 1-8.
*Note: Leave the Output Station Module in the first position plugged into the Power Interconnect Board.
Power the satellite back on.
The Timing Mechanism should display “PAR+ 08” or “PAR+ES 08”. A displayed size of “08” indicates that the Timing Mechanism has detected one Output Station Module. If the Timing Mechanism is displaying a station size of “08”, the Output Station Module installed in the first position is working properly.
If the Timing Mechanism displays “Incompatible OSM”, “Size=0”, or “No Output Modules Detected”, the Output Station Module installed in the first position is damaged and should be replaced.
Power the satellite off and remove the Output Station Module installed in the first position, making sure to separate and label known-working components from damaged components.
Proceed to test all remaining Output Station Modules in the first position of the satellite, powering off the satellite between each installation.
Once all Output Station Modules have been tested and damaged units have been discarded, proceed to part two of troubleshooting.
Part Two
Start by powering off the satellite using the On/Off rocker switch located on the front of the Power Supply Assembly.
Next, install one Output Station Module in the first position and one Output Station Module in the second position of the satellite.
Plug the Output Station Module in the first position into the Power Interconnect Board and plug the Output Station Module in the second position into the Output Station Module in the first position.
The Output Station Modules in the first and second positions should be the only Output Station Modules installed at this time.
Power the satellite back on.
The Timing Mechanism should display “PAR+ 16” or “PAR+ES 16”. A displayed size of “16” indicates that the Timing Mechanism has detected two Output Station Modules. If the Timing Mechanism is displaying a station size of “16”, the Output Station Modules installed in the first and second positions are working properly.
If the Timing Mechanism displays “Incompatible OSM” or an incorrect station size, the Output Station Module installed in the second position is not receiving the required data signal from the Output Station Module installed in the first position.
Proceed to power off the satellite and remove the Output Station Module in the first position, replacing it with the Output Station Module in the second position.
Power the satellite back on.
If the Timing Mechanism displays the correct station size of “PAR+ 08” or “PAR+ES 08”, the Output Station Module that was removed from the first position is damaged and should be replaced.
Continue to reinstall all known-working Output Station Modules, powering off the satellite between each installation.After each installation, verify that the Timing Mechanism is displaying the correct station size for corresponding to the number of Output Station Modules installed. Example: If there is one Output Station Module installed, the Timing Mechanism should display “PAR+ 08” or “PAR+ES 08”. If there are two Output Station Modules installed, the Timing Mechanism should display “PAR+ 16” or “PAR+ES 16”.
Replacement Output Station Modules (OSMs) can be purchasedhere.
Lesson tags: rain bird, rainbird, par+, par+ es, par plus, par plus es, repair, help, troubleshooting, exchange, motherboard, timing mechanism, faceplate, pib, power interconnect board, osm, output station module, boardtronics
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