220-1201 Printer Troubleshooting Practice Test 2 — 15 Questions

Question 1

A user reports that their inkjet printer produces output with horizontal white lines through text and images. The printer has been used heavily for months without maintenance. What should you do to resolve this issue?

Accepted Answer

Run the printer's printhead cleaning cycle. Horizontal white lines on inkjet output indicate clogged printhead nozzles. Over time, dried ink can block nozzles, preventing ink from being deposited. Running a printhead cleaning cycle uses the printer's built-in routine to clear clogs. If that fails, a manual cleaning or replacement may be needed.

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Replace the fuser assembly

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Perform a printhead alignment

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Replace the pickup rollers

Question 2

During a routine printer maintenance, you replace the toner cartridge in a laser printer. After reassembly, the printer displays 'Replace Toner' error even though the new cartridge is installed. What should you do first?

Accepted Answer

Remove the protective seal and reseat the cartridge. The 'Replace Toner' error after installing a new cartridge often means the cartridge is not properly seated or the protective seal was not removed. Removing the seal allows toner to flow, and reseating ensures the printer detects the cartridge correctly.

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Replace the fuser assembly

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Clean the corona wire

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Update the printer firmware

Question 3

A technician is installing a new thermal printer for a retail point-of-sale system. After connecting the printer and installing the driver, the printer prints garbled characters and random symbols. What is the most likely cause?

Accepted Answer

The printer driver is incorrect for the model. Garbled characters or random symbols often indicate a driver mismatch or incorrect printer language setting. Thermal printers typically use ESC/POS or similar commands. Installing the wrong driver or having the communication settings (baud rate, parity) misconfigured can cause the printer to misinterpret data.

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The thermal paper is loaded upside down

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The printhead is dirty

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The printer is out of paper

Question 4

A small office has an inkjet printer that intermittently prints blank pages. The printer has been recently refilled with ink, and the printhead alignment test prints correctly. What is the most likely cause of the blank pages?

Accepted Answer

Clogged printhead nozzles. Inkjet printers that print blank pages often have clogged printhead nozzles, especially after refilling. Even if the alignment test prints fine, the nozzles may be partially blocked, causing some pages to print blank. Running a printhead cleaning cycle usually resolves this.

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Low ink levels in the cartridge

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Faulty fuser assembly

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Incorrect paper type setting

Question 5

A large organization uses multiple network printers. One printer consistently prints pages with a faint ghost image of the previous page's content. The printer has been recently serviced with a new toner cartridge and drum. What component is most likely causing this ghosting?

Accepted Answer

The fuser assembly is failing. Ghosting—a faint duplicate of a previous image—is often caused by a failing fuser that does not properly clean residual toner from the drum or by a worn cleaning blade. Even with new consumables, the fuser or cleaning assembly may be worn. The fuser's heat and pressure can cause toner to stick and transfer later.

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The transfer roller is worn

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The toner cartridge is low on toner

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The paper path has a buildup of toner

Question 6

A technician is troubleshooting a laser printer that produces a '50.1 Fuser Error' message on the display. The printer is in a dusty warehouse environment. What should the technician do first?

Accepted Answer

Power cycle the printer. A fuser error code like 50.1 indicates the fuser is not reaching the correct temperature or has a hardware fault. The first step is to power cycle the printer to clear temporary errors. If the error persists, the fuser assembly likely needs replacement. Dust can cause overheating or sensor issues.

Answer

Replace the fuser immediately

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Clean the fuser with compressed air

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Update the printer firmware

Question 7

During a printer deployment, a technician installs a network laser printer and configures it with a static IP address. Users can print from their computers, but the printer's web interface is unreachable from any browser. What is the most likely cause?

Accepted Answer

The printer's embedded web server is disabled. If printing works but the web interface is inaccessible, the printer's network settings are likely correct, but the web server service may be disabled or blocked by a firewall. Many printers have a separate setting to enable the embedded web server. Checking the printer's menu or documentation is the next step.

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The printer's IP address is on a different subnet

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The printer driver is outdated

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The printer's firmware needs updating

Question 8

A user says their inkjet printer prints colors that are slightly misaligned, with text appearing blurry. The printer has been used heavily for months. Which component should be checked or calibrated first?

Accepted Answer

The printhead alignment. Misaligned colors and blurry text on an inkjet printer typically indicate that the printhead alignment is off. Most inkjet printers have a built-in alignment utility that prints a test page and adjusts the printhead position. Running this calibration is the standard first step.

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The ink cartridge nozzles

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The paper type setting

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The printer driver version

Question 9

A small office uses an inkjet printer that has not been used for two weeks. Now, the prints show missing colors and horizontal white lines. What should be done first to resolve this?

Accepted Answer

Run the printhead cleaning cycle. Inkjet printers that sit idle often have dried ink in the printhead nozzles, causing missing colors or lines. Running the printer's built-in printhead cleaning cycle uses ink to flush the nozzles. If that fails, a manual cleaning or replacement may be needed.

Answer

Replace the ink cartridges

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Update the printer driver

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Replace the printer

Question 10

A user reports that their laser printer prints a blank page after every print job. The document itself prints correctly, but an extra blank sheet follows. What is the most likely cause?

Accepted Answer

The printer driver is set to print a separator page. An extra blank page after a print job is often caused by a setting in the printer driver or application that adds a separator page. This is common when 'Print separator page' is enabled. Checking the driver settings and disabling any separator page option usually resolves it.

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The printer has a low toner cartridge

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The fuser is malfunctioning

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The paper size setting is wrong

Question 11

A user complains that their laser printer is picking up multiple sheets of paper at once, causing jams. The paper tray is full of standard 20 lb bond paper. Which component is most likely causing this issue?

Accepted Answer

The separation pad is worn. Multiple sheets feeding into the printer is typically due to worn or dirty separation pads, which are designed to separate one sheet from the stack. Over time, these pads lose friction. Cleaning or replacing the separation pad usually fixes the problem.

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The pickup roller is worn

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The paper is too thin

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The fuser is overheating

Question 12

A thermal printer used for shipping labels is producing faint, hard-to-read labels. The printer has plenty of thermal paper loaded. What is the most likely cause?

Accepted Answer

The printhead is dirty or worn. Thermal printers rely on the printhead heating the paper. Faint output usually indicates a dirty or worn printhead. Cleaning the printhead with a thermal cleaning pen or alcohol swab often restores clarity. If the printhead is worn, replacement may be needed.

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The paper is upside down

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The printer driver is incorrect

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The paper is expired

Question 13

A technician is deploying a new laser printer in a medical office. After installation, the printer prints a test page correctly, but when users print from their workstations, the output is garbled with random characters. What is the most likely cause?

Accepted Answer

The printer driver is incorrect or corrupt. Garbled output from a printer that works on a test page but not from workstations usually indicates a driver mismatch. The test page uses the printer's internal firmware, while user print jobs rely on the installed driver. Installing the correct driver for the printer model and operating system resolves the issue.

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The printer's network cable is faulty

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The printer's memory is full

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The printer is set to PostScript emulation but the driver uses PCL

Question 14

A user reports that their laser printer is producing pages with vertical black streaks. The streaks appear in the same position on every page. What is the most likely cause?

Accepted Answer

A scratched drum. Vertical black streaks on laser printer output are typically caused by a damaged or scratched drum. The drum rotates and transfers toner, so any defect creates a repeating mark. Cleaning or replacing the drum usually resolves the issue.

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Low toner cartridge

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A dirty corona wire

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A faulty fuser

Question 15

A user reports that their laser printer occasionally prints pages with a faint ghost image of the previous page. The ghost image appears about 2 inches below the current content. What is the most likely cause?

Accepted Answer

The drum cleaning blade is worn. Ghosting in laser printers is often caused by a worn or damaged cleaning blade that fails to remove residual toner from the drum. The leftover toner transfers to the next page, creating a faint duplicate. Replacing the cleaning blade or drum unit usually fixes the problem.

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The toner cartridge is low

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The fuser is overheating

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The paper is damp