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CORRECTIVE MAINTENANCE
Sammons Preston CPM Unit
Circuit Board Replacement Procedure
1. Turn off the power and unplug the CPM unit.
2. Using a Phillips head screwdriver, remove the cover from the control box.
3. Unplug all of the components from the circuit board, i.e. motor, power supply, potentiometer and hand controller
connectors.
4. Using a NON-Magnetic screwdriver, loosen the 4 screws and remove old circuit board.
5. Install new board and secure in place with 4 screws.
6. Reinstall all connectors.
7. Perform auto-calibration procedure.
8. Reinstall the control box cover.
Circuit Board
Disconnect all components from Circuit Board
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