A relay-controlled resistor network limits the massive inrush current when the amplifier is first turned on, preventing main circuit breakers from tripping. Troubleshooting and Repairing via the Schematic
Use a highlighter pen on a printed copy of the circuit diagram. Trace the path of the positive rail. Then, physically probe the PCB with a multimeter in continuity mode to verify the traces match the schematic.
"This contains the NX Audio RX 4000 circuit diagram," Echo-1 said, their voice low and gravelly. "Use it wisely."
The RX 4000 is equipped with advanced protection systems: