Hitachi Zaxis 135 Would Not Raise RPM: Two Blank Readings Shared One Missing 5-Volt Feed

Trace a Hitachi Zaxis 135 no-rpm-control fault through two blank data values to a missing MCU five-volt reference.

Trace a Hitachi Zaxis 135 no-rpm-control fault through two blank data values to a missing MCU five-volt reference.