Ellman Surgitron 4.0 Dual Rf Service Manual -

Ensure all internal ground wires are fastened back to the chassis points.

Ensure output wattage matches the front panel setting within ±plus or minus ±plus or minus 3 Watts (whichever is greater). 4. Calibration and Alignment Procedures ellman surgitron 4.0 dual rf service manual

The unit features an automatic Return Plate Monitoring (RPM) circuit. Ensure all internal ground wires are fastened back

| Symptom | Probable Cause | Corrective Action | | :--- | :--- | :--- | | | 1. Blown mains fuse. 2. Defective Power Switch. 3. Broken power cord. | 1. Check/Replace mains fuse. 2. Verify continuity of switch. 3. Test cord continuity. | | Unit powers on, but NO RF Output | 1. Return plate not connected properly. 2. Defective Handpiece/Footswitch. 3. Blown internal RF fuse. 4. Failed Output Relay. | 1. Verify dispersive electrode connection. 2. Test switch continuity. 3. Open case and check internal fuses. 4. Test relay coil voltage. | | Intermittent Output | 1. Broken wire in handpiece cord. 2. Loose connection in output socket. 3. Cold solder joint on PCB. | 1. Wiggle test the handpiece cord while active. 2. Inspect socket pins. 3. Resolder joints on PCB. | | Weak Output (Low Power) | 1. High resistance in Patient Plate circuit. 2. Failed RF Power Transistor. 3. Mismatched antenna/loop (if using Loop electrodes). | 1. Clean contacts on return plate cable. 2. Test transistor gain. 3. Ensure electrode is fully seated. | | Circuit Breaker Trips | 1. Shorted Power Transformer. 2. Shorted Bridge Rectifier. 3. Shorted Output Transistor. | 1. Isolate transformer primary to test. 2. Test diodes on rectifier. 3. Check transistor for short collector-emitter. | Calibration and Alignment Procedures The unit features an