What was found
EMERGENCY LIGHT BITE TEST FAILS, WITH FAULT MSG'S -EPSU 115 VAC AFT L- & -EPSU UNIT AFT L. REPLACED EMERGENCY BATTERY SUPPLY. OPS CHECKS NORMAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
EMERGENCY LIGHT BITE TEST FAILS, WITH FAULT MSG'S -EPSU 115 VAC AFT L- & -EPSU UNIT AFT L. REPLACED EMERGENCY BATTERY SUPPLY. OPS CHECKS NORMAL.