CompTIA A+ Core 1 (220-1101) — Question 236

A regularly used laser printer is printing vertical lines on each page. Which of the following should the technician do first?

Answer options

• A. Lower the printing contrast.
• B. Change the paper type.
• C. Install a new fuser.
• D. Replace the toner cartridge.

Correct answer: D

Explanation

The correct answer is D, as vertical lines typically indicate a problem with the toner cartridge, such as it being low or defective. Options A and B are unlikely to resolve the issue, and C, while a possible cause, is less common than a faulty toner cartridge in this scenario.