What was found
DUE TO FWD CARGO FIRE INDICATION CREW DISCHARGED NR1 CARGO EXTINGUISHER. RELEASED FOR SERVICE IAW MEL: 26-22-01-02-A. ACFT OK FOR SERVICE. REMOVED AND REPLACED NR1 LWR CARGO COMPARTMENT FIRE EXTINGUISHER CONTAINER REF MM 26-22-01-4. PERFORMED LOW PRESSURE TEST OF THE LWR CARGO FIRE EXTINGUISHER CONTAINER REF MM 26-22-02. OPS CHECK GOOD. PERFORMED LOW PRESSURE TEST OF FIRE EXTINGUISHER CONTAINER REF MM 26-22-02. OPS CHECK GOOD. PERFORMED FIRE DISCHARGE CIRUITRY TEST FOR NR 1 SYS. ALL CHECKS GOOD. REF: AMM 26-22-01-5.