As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BEFORE PREFLIGHT FOUND BATTERY SWITCH IN BATTERY SWITCH ON BAT AND ELEC LIGHT ON ELECTRICAL PANEL. GROUNDED - YES. PERFORM FIM 24-31 TASK 801. FOUND SPCU INOP FAULT. PERFORMED FIM 24-34 TASK 802 AND RERACK SPCU. ELEC CLEARED. AIRCRAFT OK FOR SERVICE.