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Model: Canon IR Adv C3330iDefect: Full of black printout.Explanation: Initially Error Code E21-0420 came, replaced Developing Assy. After restarted, E21-0420 error code solved. After that printer takes abnormal warmup time. After standby mode, tried ...

Hi, i am working as a technical service engineer in canon authorised service center in india. now i want to pursue the canon authorised certification program for photocopier technician from canon. please guide me to achieve this.