Unknown Printer

How to Identify and Fix Common Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced technical support :

If the error message, Unknown device appears, this can indicate that there is not adequate power and the PC can not identify the printer correctly. Verify that there are no extension cables and that the power cable is no longer than five meters. Reseat the power cables.
There are numerous possible causes for a printer that`s randomly producing blanks. The most common ones are empty ink cartridges, improper cartridge installation, and congested nozzles.
Stop sharing your printer with other users on the network.

Fortunately, it`s easy to disable printer sharing in your settings. Windows: In the Control Panel, click Network and Internet and then Network and Sharing Center. Click Change advanced sharing settings and then choose Turn off file and printer sharing.

Open the start menu and select Control Panel > Administrative Tools > and choose the Services icon. Locate the Print Spooler service and right-click. Then select the option to “Stop” the service.
If you see an “unknown accessory detected near you” message (or similar), it means there`s an item compatible with the Find My network that might be traveling with you. If so, its owner may be able to see your location. You should look to see if something you`re borrowing has such a device attached.
If there is an F Mode key or F Lock key on your keyboard, the Print Screen not working Windows 10/11 may be caused by them, because such keys can disable the PrintScreen key. If so, you should enable the Print Screen key by pressing F Mode key or F Lock key again.
In Device Manager, click on View and select Show hidden devices. Next, expand the Printers section to view your printer. Right-click on the printer and select Uninstall device. Select the Delete the driver software for this device option and click Uninstall.
In Windows, go to Printer Properties > Maintenance > Clean Heads > OK and follow on-screen prompts. On a Mac, check the Applications folder for a Utility application for the printer. To manually clean the printer, remove printheads and use equal parts water and isopropyl alcohol to clean them.
If the LabelWriter appears as Unspecified or Unknown in Devices and Printers on Windows, it usually means that the computer has not identified that device as a printer yet.
The problem of the printer icon not displaying in devices & Printers is frequently resolved by downloading and installing the most recent printer driver. If your printer drivers are out of sync, they may not function until you download and install the latest update.
Check cables or wireless connection

Make sure that the printer`s USB cable is properly connected from the printer to your PC. If your USB isn`t recognized, see Automatically diagnose and fix Windows USB problems. Check the wireless connection (for wireless printers).

First, you can run the printer troubleshooter to repair printer icon missing. Step 1. Go to Settings > Update & Security > Troubleshoot > Additional troubleshooters. Then click the Printer option and select Run the troubleshooter.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Display blank
ANSWER : I think PCA just means Printed Circuit Board Assembly, it can also be listed as PCB but either way it’s the same thing.

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Unknown Printer

HP Laserjet 4000 Printing Blank Pages
ANSWER : Would just like to say thank you to every one. I am a teacher and need my printer for a ridiculous amount of paper work that keeps me away from working with students. My printer was down for 5 school days. I finally got the new toner and it still didn’t print. After following your meticulous instructions I was able to get it working. Thank you Thank you Thank you to all people who contributed to this.

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Unknown Printer

HP Color Laserjet blank pages – only jetdirect page
ANSWER : What about the engine test? To do that, drop down the front tray. Feel around on the left side at the top and you’ll feel a little plastic dongle. If you lift up on that it will initiate an engine test page. That will be a page containing lines of each color.

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Unknown Printer

HP Laserjet 4 Plus LED display dim
ANSWER : My HP Laserjet Plus’s LED display went blank around 6 weeks ago. It had been acting strangely for about a month, when ready, instead of the usual 00 READY it would display 000READY, which got my attention. Well, it suddenly went entirely AWOL. The service manual said to check:

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Unknown Printer

LED display is blank
ANSWER : Check the connections to the display and the DC controller. Could be either a bad controller or a bad display. Unfortunately, you can’t swap either with your HP 4.

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Unknown Printer

HP Color Laserjet 2840 spitting out blanks
ANSWER : Moe- You are the man!

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Unknown Printer

HP laser jet 3015 "Upgrade Error Call HP Support"
ANSWER : rgtr

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Unknown Printer

Blank Display
ANSWER : Most likely cause would be the controller board. That requires a little bit of disassembly to get out. Around $100 or so for the part.

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Unknown Printer