As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NO CONTROL OVER CABIN LIGHTING FROM CIDS PANEL. EMERGENCY LIGHT STAY ON ALL THE TIME REGARDLESS OF SWITCH POSITIONS. STILL TROUBLESHOOTING. REPLACED 10WL POWER SUPPLY (P/N 3214-54) AND CIDS PANEL, NO HELP. REPLACED CPC NR 1, DEU 300RH4, DEU 300RH5. NORMAL CABIN LIGHTS TEST NORMAL.