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Scanning

Scanner, OCR, and Fax Problems

Multifunction printers add scanning, OCR (turning scans into editable or searchable text), and sometimes fax. These features rely on both the hardware and network destinations, so problems can come from either side. This guide explains the common scanning situations and the checks that isolate the cause.

Last reviewed: October 2026

Safe first checks

  1. 1Read and note the exact message on the printer display or in the print queue.
  2. 2Print the printer's own test or configuration page to help distinguish a device problem from a computer problem.
  3. 3Record custom settings before removing a printer or reinstalling a driver; ask IT first on managed work devices.
  4. 4Stop using the printer if there is excessive heat, smoke, a burning smell, sparks, or leaks. Disconnect power only if safe; never touch wet or damaged electrical parts.

Scanner not detected

The computer or app cannot find the scanner on a multifunction printer, even though printing may work. The scan path or software is not connecting.

Possible causes

  • •The scan component not reachable over the connection
  • •Scanning software or driver not installed
  • •The printer asleep or offline
  • •A USB/network issue affecting scanning

What to check

  1. 1.Confirm the printer is awake, online, and on the same network (or connected by USB).
  2. 2.Use the operating system's built-in scan utility to detect the scanner.
  3. 3.Re-add the device so both print and scan functions are set up.
  4. 4.Try scanning from the printer's panel to the computer to isolate the direction.

When to stop: if printing works but scanning never connects after re-adding, the scan feature may need its specific software or a model-specific step; check the manual. On managed devices, ask IT.

Scan-to-email or scan-to-folder failure

The printer cannot send scans to an email address or a network folder. These features depend on correct destination settings on the printer.

Possible causes

  • •Incorrect email server or folder settings
  • •Wrong credentials for the destination
  • •A changed network path or permissions
  • •Security settings blocking the send

What to check

  1. 1.Re-enter the destination settings (email server details or the exact folder path) carefully.
  2. 2.Confirm the credentials the printer uses are current and authorized.
  3. 3.Verify the folder still exists and the printer account can write to it.
  4. 4.Test with a simple destination to isolate the problem.

When to stop: scan-to-email and scan-to-folder often depend on server and account settings managed by IT. If settings look correct but sends fail, escalate to IT rather than loosening security.

Poor scan quality

Scans look blurry, streaked, dark, or discolored. The glass, settings, or original is affecting the result.

Possible causes

  • •A dirty scanner glass or feeder strip
  • •Low resolution or wrong scan settings
  • •A marked or wrinkled original
  • •Incorrect color/contrast settings

What to check

  1. 1.Clean the scanner glass and the ADF scanning strip with a lint-free cloth.
  2. 2.Raise the scan resolution and choose the correct color mode for the content.
  3. 3.Place the original flat and square on the glass.
  4. 4.Adjust brightness/contrast settings if scans are too dark or light.

When to stop: if streaks persist after cleaning, a mark may be on the internal scanning strip or the ADF glass; follow the manual's cleaning guidance rather than disassembling the scanner.

OCR unavailable or inaccurate

OCR fails to run or produces inaccurate text. OCR turns an image of text into editable or searchable text, and its accuracy depends heavily on scan quality.

Possible causes

  • •No OCR software or feature enabled
  • •Low-resolution or skewed scans
  • •Poor contrast or a noisy original
  • •An unsupported language or font

What to check

  1. 1.Confirm an OCR tool is available (the OS, included software, or a scan app) and enabled.
  2. 2.Scan at a higher resolution with good contrast and a straight page.
  3. 3.Use a clean, flat original for best recognition.
  4. 4.Select the correct document language in the OCR settings.

When to stop: OCR is never perfect, especially with handwriting, decorative fonts, or poor originals. Expect to proofread results; very poor originals may not OCR reliably at all.

Fax-line errors

Fax sending or receiving fails with line errors. Fax depends on the telephone line and connection quality more than on the printer.

Possible causes

  • •A poor or noisy phone-line connection
  • •A wrong line type or filter needed
  • •Incorrect fax settings (speed, dialing)
  • •The line shared with other devices

What to check

  1. 1.Confirm the phone line is connected to the correct fax port and has a dial tone.
  2. 2.Check fax settings such as dialing mode and speed per the manual.
  3. 3.Lower the fax speed if the line is noisy.
  4. 4.Ensure other devices are not using the line during a fax.

When to stop: fax behavior depends on your phone service and line quality, which the printer cannot control. If the line itself is the problem, that is a telephone-service matter.

Document feeder skipping, jamming, or feeding multiple pages

The automatic document feeder (ADF) skips pages, jams, or pulls several sheets at once. Feeder rollers or the originals are the usual cause.

Possible causes

  • •Worn or dusty ADF rollers
  • •Stapled, folded, or damaged originals
  • •Mixed sizes or weights in the stack
  • •Originals loaded unevenly

What to check

  1. 1.Remove staples and flatten folds before loading originals.
  2. 2.Fan and square the stack, and set the ADF guides snug.
  3. 3.Clean the ADF rollers with a lint-free cloth.
  4. 4.Load same-size, similar-weight pages together.

When to stop: if misfeeds continue after cleaning and proper loading, the ADF rollers may be worn. Replacement is model-specific — use the flatbed glass for critical pages meanwhile.

Preventive habits

  • Keep the scanner glass and ADF strip clean.
  • Scan at an adequate resolution for the content and for OCR.
  • Remove staples and flatten originals before using the ADF.
  • Keep scan-to-email and scan-to-folder destination settings current.
  • Expect to proofread OCR output.

Frequently asked questions

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