OEM Canon GPR-55/C-EXV51 drum unit rebuild instructions iR ADVANCE C5535, C5540, C5550, C5560

An instructional video from CET Group. Detailed instructions are here: http://www.cetgroupco.com/uploads/soft/manual/component/OEM%20Canon%20GPR-55%20drum%20unit%20rebuild%20instructions-English.pdf More instructional videos are here: http://www.cetgroupusa.com/08-Instructional-Videos.aspx