CompTIA A+ 220-1101 (V14) Practice Question

The issue described indicates a problem with the charging process of the imaging drum. This could be due to a failure in the charge roller or coronal wire, which are responsible for uniformly charging the imaging drum surface. If a segment of the charge roller or coronal wire fails to charge the drum, toner will not adhere to this uncharged area, leading to unprinted vertical stripes on each page. The toner cartridge includes both the toner and the drum so its replacement would've solved the problem if it were there; however, it did not, therefore excluding the toner cartridge from being the cause. Transfer belt issues commonly result in color misalignment or smearing, rather than clear, unprinted portions. The fuser assembly issue would more likely cause problems related to the correct adhesion and fusion of toner onto the paper rather than the presence or absence of toner on the drum.