As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY SCAPE SQUIB TEST 1 LIGHT DOES NOT ILLUMINATE WHEN TEST BUTTON PUSHED. DURING ETOPS PDC CHECK. FOUND NO VOLTAGE AT K1 RELAY. REPLACED BATTERY PACK ASSEMBLY M961, M962 & TIME DELAY MODULE M1 IN MODULE M1135. SQUIB TEST CHECKED GOOD.