220-1101 Hardware and Network Troubleshooting Practice Question
A user reports that a laser printer is displaying a 'Paper Jam' error even though no paper is visibly jammed inside the printer. The technician has removed all paper trays and checked the fuser area, rollers, and output bin, but finds no crumpled or stuck paper. Which of the following is the MOST likely cause of this error?
⚠ Common exam trap
Test-takers frequently assume a 'Paper Jam' error must be caused by actual paper, overlooking that the sensor itself can fail and report a false positive.
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
✓
A stuck paper jam sensor
A stuck paper jam sensor can cause a false 'Paper Jam' error because the sensor remains in the triggered position even when no paper is present. The printer's firmware interprets the sensor's state as a jam, halting operation. Since the technician has visually confirmed no paper in all common areas, the sensor itself is the most likely culprit.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
A faulty fuser heating element
Why it's wrong here
A faulty fuser heating element primarily causes thermal fusing problems, such as toner that smears or rubs off, and often triggers a separate fuser error code, not a paper jam. The fuser's thermistor monitors temperature, not paper presence; even a completely cold fuser does not make the paper-jam sensor report paper when there is none. Consequently, a stuck-jam sensor remains the correct diagnosis.
When this WOULD be correct
A faulty fuser heating element would be correct if the printer displays a 'fuser error' or 'overheat' message, or if prints are smudged or toner is not fused to the paper.
- ✗
A worn transfer roller
Why it's wrong here
A worn transfer roller degrades image transfer, producing symptoms like ghosting, light print, or toner streaks, but it never changes the state of the paper-path sensors. Those sensors are mechanical or optical flags that physically detect paper presence; a roller's surface condition has no pathway to trigger a false jam signal. Thus a phantom paper jam points to the sensor itself, not the transfer roller.
When this WOULD be correct
This would be correct if the question described print defects (e.g., toner not transferring, blank spots) or the printer failing to pick up paper from the tray, with no jam error present.
- ✓
A stuck paper jam sensor
Why this is correct
If a sensor is stuck (e.g., due to debris or a broken flag), it will indicate paper is present when there is none, causing the false jam error. Cleaning or replacing the sensor resolves the issue.
- ✗
Outdated printer firmware
Why it's wrong here
Outdated firmware can produce odd printer behaviors, but a persistent phantom paper jam is almost exclusively a hardware-level sensor fault. Firmware relies on physical sensor inputs; if a sensor flag is bent or clogged with debris, it will keep reporting paper present regardless of software version. While a firmware bug is theoretically possible, the predictable remedy is cleaning or replacing the sensor, not updating code.
When this WOULD be correct
A question describing a printer that intermittently fails to print, displays error codes, or has connectivity issues after a firmware update would make 'Outdated printer firmware' the correct answer, as firmware updates often fix such bugs.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 220-1101 exam frequently reuses these exact scenarios with slightly different constraints.
✓A stuck paper jam sensorCorrect answer▾
Why this is correct
If a sensor is stuck (e.g., due to debris or a broken flag), it will indicate paper is present when there is none, causing the false jam error. Cleaning or replacing the sensor resolves the issue.
✗A faulty fuser heating elementWrong answer — click to see why▾
Why this is wrong here
A faulty fuser heating element typically causes print quality issues like smudging or incomplete fusing, not a false paper jam error when no paper is present.
★ When this WOULD be the correct answer
A faulty fuser heating element would be correct if the printer displays a 'fuser error' or 'overheat' message, or if prints are smudged or toner is not fused to the paper.
Why candidates choose this
Candidates may associate fuser problems with jams because the fuser is a common jam location, but they overlook that a heating element failure does not trigger a jam sensor.
✗A worn transfer rollerWrong answer — click to see why▾
Why this is wrong here
A worn transfer roller causes print quality issues like streaks or ghosting, not a false paper jam error. The error persists despite no visible jam, indicating a sensor problem, not a roller defect.
★ When this WOULD be the correct answer
This would be correct if the question described print defects (e.g., toner not transferring, blank spots) or the printer failing to pick up paper from the tray, with no jam error present.
Why candidates choose this
Candidates may confuse transfer roller wear with paper path issues, assuming a worn roller could cause paper to jam, but it does not trigger a false jam sensor error.
✗Outdated printer firmwareWrong answer — click to see why▾
Why this is wrong here
Outdated firmware typically causes print quality issues or compatibility problems, not phantom paper jam errors. A paper jam error with no visible jam is almost always a sensor issue.
★ When this WOULD be the correct answer
A question describing a printer that intermittently fails to print, displays error codes, or has connectivity issues after a firmware update would make 'Outdated printer firmware' the correct answer, as firmware updates often fix such bugs.
Why candidates choose this
Candidates may think firmware controls all printer functions, including jam detection, and that updating it could resolve sensor logic errors, but firmware rarely causes false jam errors without a hardware sensor fault.
Analysis generated from the official 220-1101blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Go deeper
Related to this question
About these practice questions
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.