B737-800
Maintenance Powerplant; Maintenance Airframe
Workload
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
General Flight Cancelled / Delayed; General Maintenance Action
Procedure; Manuals; Aircraft
Aircraft went to service with all passenger O2 test stop button deployed.I was assigned on the task card; general visual inspection for passenger O2 mask; I signed the repacked the mask and closed PSU (Passenger Service Unit) Zone 221 and 222; I did not pull the test stop button for drop test; because the job card does not require to do so. I did not see any test stop button was deployed in my work zone.
Technician reported that a procedural error caused an aircraft to enter service with passenger oxygen test stop buttons deployed.