220-1201 Practice Question: That their MFP is making a loud grinding noise…

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  The toner cartridge is low on toner.

  Why it's wrong here

  A low toner cartridge primarily results in faded or light prints, as there isn't enough toner powder to fully adhere to the page. It does not typically cause distinct vertical streaks, which are usually indicative of a physical defect on an imaging component. Furthermore, a low toner condition would not produce grinding noises, as it doesn't involve mechanical wear or misalignment that would generate such sounds.

• ✗

  The fuser unit is failing.

  Why it's wrong here

  The fuser unit is responsible for permanently bonding the toner to the paper using heat and pressure. A failing fuser often manifests as toner smudging, incomplete fusing (toner rubs off), or paper jams due to rollers not gripping correctly or excessive heat causing paper to stick. It is unlikely to produce distinct vertical streaks, which point to an issue earlier in the imaging process, nor would it typically generate grinding noises unless a roller bearing was severely damaged, which is a less common primary symptom for "failing fuser" in this context.

• ✓

  The imaging drum is damaged or worn.

  Why this is correct

  The imaging drum, or photoconductive drum, is a critical component that receives the laser image and transfers toner to the paper. If the drum's surface is scratched, pitted, or worn, these imperfections will consistently pick up or fail to pick up toner, resulting in distinct, repetitive vertical streaks on the printed page. Additionally, a damaged or worn drum could rotate unevenly or have issues with its internal gears or bearings, leading to the reported grinding noises as it operates.

• ✗

  The paper tray is misaligned.

  Why it's wrong here

  A misaligned paper tray primarily affects paper feeding, leading to issues such as paper jams, skewed prints where the image is not straight on the page, or the printer failing to pick up paper at all. It does not directly interact with the toner transfer or fusing process in a way that would create vertical streaks on the output. Furthermore, a misaligned tray would not generate grinding noises, as these sounds typically originate from internal mechanical components like gears or rollers, not the static paper storage area.

Go deeper

Related to this question