DETAILED TROUBLESHOOTING PROCEDURE SUPPORT SYSTEM

TM 5-5420-226-20-1 DETAILED TROUBLESHOOTING PROCEDURE Symptom-54 SUPPORT SYSTEM - FIRE EXTINGUISHER (Continued) ^STEPo^1CONTINUED T FIRE EXTINGUISHER RELAY First l l Technician (Commander’s Station) Remove right-hand floor access cover (page 17-9). Listen for click sound from fire extinguisher relay when FIRE-PULL HARD interior control handle is pulled and another click 10 seconds later. Second Technician (Operator’s Station) l Pull FIRE-PULL HARD interior control handle and release it. 4 Did relay close and stay closed for a minimum of 10 seconds? I FOR CLARITY QUADRANT = ASSEMBLIES NOT SHOWN (_._{Check front accessory} harness (CKT 975A, 54A) for continuity from bulkhead connector to connector at fire extinguisher relay. . See Step @ _.1 , TA107258 4-569