As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING OVERNIGHT MAINTENANCE DISCOVERED CABIN EMERGENCY PATH LIGHTS INOPERATIVE AT ROWS 3 AND 6. MX R & R LT AFT CABIN EMERGENCY POWER SUPPLY. OPS CHECKS GOOD. CONFIRMED FAILURE. REPLACED S1 PUSH TO TEST SWITCH. REPAIRED AND TESTED IAW CMM 33-51-12 REV. 3.