2GL/2FV/2FW
2-4-5
(5) Repetitive defects gauge
First occurrence of defect
[24 mm] Upper registration roller
[38 mm] Lower registration roller
[63 mm] Heat roller, Press roller (Fuser unit)
[47.2 mm] Developing roller (Developer unit)
[94 mm] Drum (Drum unit)
[48 mm] Transfer roller