How long will the drum unit last and what is the model number for the DCP-B7500D?
The drum unit (model DR-B021 for India, or DR-B022 for Indonesia and Vietnam) has an approximate life of 12,000 pages, based on 1 page per job using A4/Letter simplex pages. The actual number of pages may be affected by factors including media type and media size. (Page 16)
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