220-1101 Fuser assembly Practice Question
A technician is troubleshooting a laser printer that produces pages with vertical black streaks running from the top to the bottom of the page. The technician has already replaced the toner cartridge and the drum unit, but the problem persists. Which printer component should the technician inspect or replace NEXT?
⚠ Common exam trap
Candidates often assume that vertical streaks are always caused by the drum or toner, but the CompTIA 220-1101 exam tests the understanding that the fuser assembly can also produce such defects when its roller is damaged or contaminated.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
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Fuser assembly
Vertical black streaks that persist after replacing the toner cartridge and drum unit are most likely caused by a damaged fuser assembly. The fuser uses heat and pressure to bond toner to the paper; if its roller is scratched or contaminated, it can leave continuous black streaks. Since the toner and drum have been replaced and the problem continues, the fuser is the next component to inspect.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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Fuser assembly
Why this is correct
Correct. A damaged or contaminated fuser roller can leave vertical black streaks on every page, as it contacts the paper along its entire length.
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Transfer roller
Why it's wrong here
Incorrect. While a bad transfer roller can cause image quality issues, it usually results in ghosting or lighter prints, not continuous black streaks.
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Laser scanner assembly
Why it's wrong here
Incorrect. The laser scanner assembly causes problems like blank pages or faded images, not continuous vertical streaks.
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Paper pickup roller
Why it's wrong here
Incorrect. Paper pickup rollers affect paper feeding, not print quality.
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Courseiva writes every 220-1101 question from scratch — 896 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 220-1101 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 220-1101 exam.