Common Printer Errors & How to Fix Them
The problems below account for the overwhelming majority of printer and copier service calls — and most of them can be fixed in a few minutes without a technician. Find your symptom, follow the steps in order, and know exactly when it's time to stop and call for service instead.
Paper Jams — and Jams That Keep Coming Back
A single jam is a fact of life. A printer that jams every day is telling you something — usually about the paper, the tray, or a worn roller.
Clearing a Jam Properly
- Power off and open the access panels the display points to — modern devices show exactly which door to open.
- Remove the paper tray fully and check the feed area beneath it.
- Pull visible paper out slowly, with both hands, in the paper's direction of travel. If it tears, retrieve every scrap — a leftover corner causes the next jam.
- Check the rear access door and duplexer (the unit that flips paper for two-sided printing) — jams hide there constantly.
- Close everything, power on, and print a test page.
Fixing Repeat Jams
- Fan the paper before loading — pages stuck together from humidity are the #1 cause of multi-feed jams. Store paper flat, in its wrapper, somewhere dry.
- Check the tray guides. The side and rear guides should touch the paper stack snugly without bowing it. Loose guides let pages feed crooked.
- Don't overfill. Stay under the tray's max-fill line, and never add paper on top of an existing stack mid-job.
- Match the paper setting to the paper. Heavy stock, labels, or envelopes fed through a tray set to "plain paper" will jam — set the media type in the tray settings, and use the bypass/manual tray for specialty stock.
- Look at the rollers. If the feed rollers are shiny, smooth, or visibly worn, they've lost their grip — that's a service item, and it's the most common mechanical cause of chronic jamming.
Streaks, Lines, Fading, and Ghost Images
Print-quality problems are diagnostic gold: the pattern on the page tells you which part is responsible. Match your symptom below.
Usually Toner — Sometimes a Setting
- Check toner levels on the control panel. Low toner prints light before the machine ever says "replace."
- Remove the toner cartridge and rock it gently side to side a few times to redistribute remaining toner — this often buys days of normal printing while a replacement arrives.
- Check that Toner Save / EconoMode / Draft isn't enabled in the print driver — it gets switched on accidentally and makes everything look faded.
- If a new cartridge still prints light, the issue is likely the transfer components — service territory.
Drum, Toner, or a Dirty Corona Wire
- A repeating vertical line in the same spot usually means a scratched drum unit — replacing the drum (or the combined toner/drum cartridge) fixes it.
- Smudged vertical streaks often mean a leaking toner cartridge — remove it and check for loose toner inside the machine.
- On copies only (not prints from a computer)? Clean the scanner glass and the thin strip of glass to the left of it — a single fleck of correction fluid or ink there draws a perfect vertical line on every copy.
Ghosting
A ghost of the image reappearing at regular intervals points to the drum or the fuser — one of them isn't fully releasing or fusing toner between rotations. Try a fresh drum unit first if yours is user-replaceable; if ghosting continues, the fuser needs professional attention. Ghosting can also appear when paper type doesn't match the fuser temperature, so confirm the media setting matches what's actually loaded.
Fuser Not Bonding the Toner
The fuser melts toner onto paper; if output smears with a finger swipe, the fuser isn't reaching temperature or has failed. Confirm the paper type setting (thick paper on a "plain" setting doesn't get enough heat), and if smearing continues on plain paper, stop and request service — fusers run extremely hot and are not user-serviceable.
"Printer Offline" and Jobs That Never Print
The document says it printed. The printer disagrees. This is nearly always a communication or queue problem, not a broken printer.
Getting It Back Online
- Restart the trio — printer, router, computer, in that order. This alone resolves an enormous share of offline errors.
- On Windows, open the print queue and make sure Use Printer Offline is unchecked under the Printer menu.
- Confirm the printer and computer are on the same network — guest networks, Wi-Fi extenders with separate names, and active VPNs all make the printer invisible.
- Print the printer's network configuration page. If its IP address changed (routers reassign them), remove and re-add the printer — or ask us about setting a static IP so it stops happening.
Clearing a Stuck Queue
- Open the queue — Windows: Settings › Printers & scanners › your printer › open queue. Mac: click the printer in Printers & Scanners.
- Cancel every job, starting with the oldest — one corrupted job at the front blocks everything behind it.
- If jobs won't delete on Windows, restart the Print Spooler: type services.msc in the Start menu, find Print Spooler, right-click › Restart.
- Print a one-page test. If it works, resend your document — and if the same document jams the queue again, the file itself is the problem; try printing it as a PDF.
Decoding Common Error Messages
Exact codes vary by brand, but the messages below appear on virtually every make — and most have simple fixes.
Cartridge Not Recognized
- Remove and firmly reseat the cartridge — it should click or seat flush. Check that all shipping tape, plastic strips, and the pull-tab seal were removed.
- Power the machine fully off and back on so it re-detects the cartridge.
- Using compatible (non-OEM) toner? Some devices reject certain compatibles — try an OEM cartridge before assuming the machine is at fault.
The Tray Setting Doesn't Match the Job
The document was formatted for one paper size (often Legal or A4) but the tray is set to another (usually Letter). Fix it at either end: change the document's paper size in the print dialog, or set the tray's configured size to match what's actually loaded — on the printer under Tray Settings or Paper Setup. A surprising number of "broken" printers are one A4-formatted email attachment away from working perfectly.
The Job Is Too Heavy for the Device
- Print large documents in smaller batches (pages 1–50, then 51–100).
- In the print driver, lower the resolution or turn off high-quality/photo mode for everyday documents.
- Print complex PDFs "as image" (an option in Adobe Reader's advanced print dialog) — slower per page, but far lighter on printer memory.
Hard Errors — Try One Restart, Then Stop
Codes referencing the fuser, laser unit, main motor, or a numbered "service error" (each brand has its own — for example, many HP fuser errors start with 50) indicate genuine hardware faults. Power the device off, wait a full minute, and power it on once. If the code returns, stop there — repeated power-cycling can worsen some faults, and these components aren't user-serviceable. Note the exact code from the display; it tells our technician what to bring.
Scan-to-Email Failures and Copy Problems
On office multifunction devices, scanning breaks more often than printing — usually because something changed on the network or email side, not on the copier.
The Email Settings Went Stale
- Ask what changed recently: a new email provider, a password update, or new security requirements (Microsoft 365 and Google have both tightened SMTP rules in recent years) will silently break scan-to-email.
- Verify the device's SMTP settings against your email provider's current requirements — server address, port, encryption, and authentication account.
- Test scan-to-folder or scan-to-USB. If those work, the scanner is fine — it's purely the email configuration.
- Check whether the destination address is receiving but filtering — scans landing in junk folders masquerade as "scan is broken" constantly.
It's the Glass, Not the Machine
If documents printed from a computer look clean but copies and scans show lines or spots, clean the scanner glass — and critically, the narrow strip of glass beside it, which the document feeder uses. One speck on that strip becomes a vertical line on every page fed through the top. Use a soft, lint-free cloth, lightly dampened with water or glass cleaner sprayed on the cloth (never directly onto the glass).
Feeder Hygiene
- Remove staples, paper clips, and sticky notes — the document feeder's #1 enemies.
- Straighten curled or dog-eared originals; badly wrinkled pages belong on the glass, not the feeder.
- Adjust the feeder's paper guides snug to the stack, and don't exceed its capacity.
- If clean, flat paper still feeds crooked, the feeder rollers are worn — a quick service item.
When It's Time to Call for Service
DIY has limits — and knowing them saves money. Some symptoms mean continued use can turn a small repair into a big one.
- 01Grinding, clicking, or scraping noises. Mechanical noise means physical contact where there shouldn't be any. Power off and stop printing — continuing can scratch the drum or damage gears.
- 02A numeric service code that survives one restart. Fuser, laser, and motor errors are hardware. Note the code and let a technician bring the right part on the first visit.
- 03Burning smells or visible smoke. Power off and unplug immediately. Do not power back on.
- 04Toner spilled inside the machine. Don't use a regular vacuum (toner particles pass through standard filters and can damage the vacuum motor) — this needs a proper cleanout.
- 05Worn rollers — chronic jams or crooked feeding with good paper. Roller replacement is quick for a tech and permanently ends the daily jam ritual.
- 06Quality defects that survive new toner and a new drum. At that point it's the fuser, transfer belt, or laser unit — and diagnosis is faster than parts roulette.
Tired of Being the Office Printer Whisperer?
Every problem on this page — the jams, the streaks, the error codes, the toner runs — is covered under ABT's all-inclusive service. One flat per-page rate includes all service calls, all toner, and all parts, with local technicians in 20 markets and nationwide coverage.