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Question 1
A customer reports that the output from their thermal receipt printer has vertical white lines. Which of the following would most likely resolve this issue?
Correct : D
Comprehensive and Detailed In-Depth
Thermal printerscreate images using aheated print headon specially coated thermal paper. Vertical white lines indicate thatpart of the heating element is dirty or blocked, preventing heat transfer to the paper. Cleaning the print head (heating element) will restore full functionality.
Option A:Thermal printers donot use ink or toner, so this is not applicable.
Option B:Wrong paper could cause blank output, but consistent vertical lines point to the print head.
Option C:Maintenance kits are typically for laser printers, not thermal printers.
CompTIA A+ Core 1 Exam Objective Reference:
Objective 3.7: Given a scenario, troubleshoot common printer problems.
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Question 2
A user prints a job from a laser printer. The user wipes the page, and the words and images come off of it. The technician replaces the toner cartridge, but the issue persists. Which of the following components should the technician replace next?
Correct : A
Comprehensive and Detailed In-Depth
Inlaser printers, thefuser unitis responsible formelting the toner onto the paperusing heat and pressure. If the toner rubs off easily, it's a clear sign thefuser is failing or not heating properly. Replacing the fuser will ensure the toner bonds correctly to the paper.
Option B (Drum):Transfers the image, but doesn't fuse the toner.
Option C (Developer roller):Applies toner to the drum --- wouldn't cause toner to rub off.
Option D (Discharge lamp):Prepares the drum for a new image; not related to toner adhesion.
CompTIA A+ Core 1 Exam Objective Reference:
Objective 3.7: Given a scenario, troubleshoot common printer problems.
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Question 3
A technician is installing a new high-end graphics card that uses a 12VHPWR connector. Which of the following is the maximum wattage supported by this power connector?
Correct : C
The 12VHPWR connector can supply up to 600 watts of power, designed for high-end graphics cards.
Why Not A (400W): This is less than the connector's maximum capability.
Why Not B (MOW): This is an invalid option.
Why Not D (700W): The maximum supported power is 600W.
CompTIA A+ Exam Reference: Core 1 (220-1201), Section 3.4, power supply and connectors.
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Question 4
The display in a conference room has a ghost image that does not match the presentation Which of the following would test resolve the issue?
Correct : B
B . Correct the keystone:
A keystone correction adjusts the image shape when a projector is angled either up or down. When a projector is not positioned directly perpendicular to the screen, the image becomes distorted or offset. Correcting the keystone will resolve alignment issues, ensuring that the presentation matches the display.
Incorrect Options:
A . Adjust the color settings: This is used for improving color balance and has no impact on ghosting or mismatched images.
C . Increase the brightness levels: Brightness changes the visibility of the image but does not address ghosting or alignment.
D . Replace the monitor: Replacing the monitor is unnecessary unless there is hardware failure, which is not indicated here.
Key Takeaway: Keystone correction is essential to resolve alignment and distortion issues in projected images.
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Question 5
Each lime a user ties to print, the paper becomes stuck at the last stage of the print job and the user has to poll me paper out of the printer. Which of the following is me most likely cause?
Correct : A
If paper gets stuck at the last stage of printing, the rollers responsible for moving the paper through the printer are likely worn out or dirty.
Why Not B (Tray assembly): The tray assembly manages paper loading, not feeding during the print process.
Why Not C (Toner): Toner is unrelated to paper jams.
Why Not D (Printhead): Printheads manage ink/toner distribution, not paper movement.
CompTIA A+ Exam Reference: Core 2 (220-1102), Section 4.6, printer troubleshooting.
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- Exam Name: CompTIA A+ Certification Exam: Core 1 (2025)
- Exam Code: 220-1201
- Last Update: 13-Mar-2026
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