Exam 220-1201 Topic 1 Question 369 Discussion

Actual exam question for CompTIA's 220-1201 exam
Question #: 369
Topic #: 1
A technician is troubleshooting an all-in-one laser printer that prints a vertical line when making copies and scans. When users print or receive faxes, the output from the printer is correct. Which of the following should the technician examine to determine the cause of the issue?

Suggested Answer: C Vote an answer

Since the issue only occurs during scanning and copying (not printing or faxing), the problem is isolated to the document feeder. A vertical line is typically caused by debris or damage on theglass under the ADF (Automatic Document Feeder), not on components related to printing.
Reference: "CompTIA A+ Complete Study Guide" by Quentin Docter - Chapter 4, page 261.

by Maxwell at May 15, 2026, 10:55 PM

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