As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN EMERG LIGHT: DURING THE CABIN EMER LIGHTS TEST PRIOR TO START, THE ISLE LIGHTS UNDER SEATS 5 AND 8 WOULD NOT ILLUMINATE. ALL OTHER LIGHTS FUNCTIONAL. WITH APU POWER ON, ALL ISLE LIGHTS ILLUMINATED (BULBS FUNCTIONAL). // SIGNOFF// REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACK AT UNDER CABIN SEAT #8 WITH A CUSTOMER SUPPLIED REPAIRED PART. PERFORMED SATISFACTORY OPERATIONAL CHECKS OF EMERG. LIGHTING SYSTEM 1/A/W CE-680A AMM 33-50-06.