In the post Reverse Engineering the Briot Tracer: Hardware I promised to post a hierarchical schematic of the Briot Tracer. The time has come.
You can find in this post the complete hierarchical schematic in PDF as well as the Kicad project, have fun!.
While I was repairing a Briot Tracer, certain sections of the main PCB circuit were reverse engineered. Mostly the power supply and the circuits associated with the debouncers of the rotary switches. Some time later the scanner broke again, this time the fault was not obvious and to try to find the problem it was necessary to reverse engineer other parts of the circuit. While I was waiting for an IC to arrive I took the opportunity to do a complete reverse engineering of the whole system.
In this entry I will share the complete schematic of the Briot Tracer.