All functions of the M701 are managed by the M701 Control PCA. The M701 Control
PCA provides connections for all switched and non-switched AC components, AC input,
and the front panel power switch/circuit breaker. Non-switched components include the
CO or HC scrubber, fan and front panel power indicator. Switched components include
the Regenerative Dryer valve, water drain valve, and the pump. All connections are
made by quick release electrical connectors to aid in servicing. See schematics in
Appendix B.