What was found
FOR TROUBLESHOOTING PURPOSES; FOUND SEVERAL EXTERIOR AND INTERIOR EMERGENCY LIGHTS INOPERATIVE.<[01] PERFORMED TROUBLESHOOTING AS PER B737 WDM 33-51-11; WDM 33-51-12; WDM 33-51-13; WDM 33-51-14; WDM 33-51-21; AND WDM 33-51-22. FOUND M2335 AND M1668 EMERGENCY EXIT LIGHT BATTERY PACK DEFECTIVE. REMOVED AND REPLACED EMERGENCY LIGHTS POWER SUPPLY-BATTERY PACKS AT POS. M2335 AND M1668 AS PER B737 AMM TASK 33-51-06-960-805. PERFORMED INSTALLATION TEST AS PER B737 AMM TASK 33-51-06-960-805. TEST PASSED.;[02] VERIFIED STEP 1.