Equipment Affected: X-ray system for Meratron M Therapy, registration 10234230021, risk class III, series affected: 3229; 3554; 3559; 3581; 3585; 3588; 3589; 3655; 3787; 3857; 3889; 3903; 3906; 3911; 3913; 3927; 5065; 5103; 5197; 5288; 5302; 5312; 5344; 5389; 5422; 5484; 5524; 5542; 5637; 5669; 5677; 5697; 5770; 5788; 5885; 70-4118; 70-4203. /// Linear Accelerator PRIMUS HI, registration 10234230073, Class of risk III, series affected: 3598; 3752; 5509; 5526. /// Oncor linear accelerator, registry 10234230125, risk class III, series affected: 5287; 5386.