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Computer keeps saying the scanner is not connected to the computer when it is in fact connected.

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  • Anonymous Jun 13, 2008

    cant connect all in one printer psc2110 to pc



  • janbill Jul 03, 2008

    Computer keeps telling me that "Cannot communicate with the device" and "Unable to communicate with the TWAIN device"
    I've followed all the steps that were suggested, Re-connect the cable, turn OFF the ON the device, re-start the computer, reload the software & drivers, Still getting the same messages.


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1 Answer

Purchase new printer, works in most cases

Posted on Jun 03, 2008

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2 Answers

My brother DCP-J140W won't scan. It keeps saying check connection but it is printing okay. Please help!


How is the all-in-one connected to your computer? The problem usually means that you do not have bi-directional communication between the printer and the computer.

If it is connected to your wireless network, did you ensure that the firewall allows the communication? (Some firewalls will automatically add the correct ports to the allowed list during the install of the full software.) For other firewall software or the less-complete install of the software drivers, you need to make sure that the port, 54925 , are allowed to access your computer for inbound and outbound network data. If adding that port is insufficient to allow scans to have bi-directional communication with the printer, also add port 137 (inbound and outbound). Since this step depends on your firewall, please add a comment with the firewall software on your computer. This is in the note in the Scanning section of the Brother Software User's manual for the DCP-J140W on page 35. This manual is available here: http://download.brother.com/welcome/doc002923/dcp140w_use_soft.pdf . An example of setting the Firewall rules for the Windows Firewall is shown starting on page 85 of the manual.

If your computer is connected to the printer via a USB cable, try a different (possibly shorter 6' or less) USB cable or a different port. If you have the printer connected to a USB hub, skip the hub and directly connect to the computer. Check if other devices work at the USB ports. Sometimes ports do fail; either they can't maintain the needed voltage or they don't keep the cable and pins properly aligned.

I hope this helps.

Cindy Wells
(I have seen the communication issues with stand-alone scanners as well. I saved a perfectly good scanner from the trash when the user failed to check if the scanner worked with other ports.)

Dec 16, 2013 | Brother DCP-J140w Wireless Compact Inkjet...

1 Answer

I'm trying to scan a document into Word and keep getting a message on the scanner that says "Cannot connect to PC" -- I've unplugged and plugged back in the cord that connects the scanner to the...


Hey JD!
It probably means that the scanner isn't configured well in the computer. What you should do, while to printer is turned on and connected to the computer is to go to the device manger (right click on "my computer" or "computer", and then go to the tab named "device manager"). go to "universal series bus controllers" and press on the plus sign. you should then have a list, search for "USB composite device" in that list. when you find it, right click on it and then left click on "uninstall" or "remove", approve it (press yes or OK) and after it done, disconnect the usb cable that connects the computer to the printer and restart the computer. only after the computer is booted up completely, you should reconnect the cable. after you do that you should get a pop up that says that new hardware is being installed (or something like that). wait for it to finish and after it says "you new hardware is installed and ready" (should appear near you computer clock), try to scan, it should work fine now. Good luck!

Dec 19, 2010 | HP OfficeJet D135 All-In-One InkJet...

1 Answer

Won't scan, says usb cord not connected, but it is.


Hello,
The fact that the printer wont recognize that your USB cable is connected when scanning can be caused by multiple factors.
The first is that the scanner is not installed, please check on your computer in Control Panel / Scanners and cameras to see if it is installed.
If it is, also make sure the software that came with your HP scanner is installed and running.
If this still does not work, try scanning from your computer, if that fails you need to reinstall the drivers and software.
Thanks,
Pat

May 22, 2010 | HP Photosmart C5180 All-In-One InkJet...

1 Answer

Scanner - says I need to install or run software.


Hello, you definately need to go to the HP Support Website and Choose Drivers and Software. Then, in the First Box at the top, Choose "Automatically Scan My System" option. NOTE: Be sure to have your device connected to computer and powered on. This option allows HP to scanyour system and install any/all updated software and drivers automatically..

May 09, 2010 | HP Officejet 4215v All-in-One Printer

1 Answer

It will not print or scan-keeps saying computer and


Hi there

This could be the driver, add and remove driver close down the PC then re start and reinstal driver it worth a go it may be just that.

All the best Pineworks

Mar 04, 2010 | Epson Stylus Color 740 InkJet Printer

1 Answer

I try to scan a document and it says that I am not set up on pc. I use just the scan button and it still won't scan. Help please!!!


Verify cables connected properly to the back of the scanner
If the scanner is a parallel port scanner it is likely it has two available connections on the back of the scanner. Verify that the cable coming from the computer is connecting to the IN, Computer IN, computer, or similar connection.
Ensure that the scanner is getting power
If your scanner is not getting power it is recommended that you check the connections ensuring that they are connected properly to the back of the computer and from the scanner to the wall. If you have the scanner connected to a power strip and or surge protector it is temporarily recommended that you connect the scanner directly to the wall.
If the computer scanner is getting power, you should notice the inside light come on when the power is first received by the scanner.
After checking the connections you still get no power to the scanner, it is recommended you contact the manufacturer of the scanner.
Additional parallel port scanner troubleshooting
If you have another device connected in between the scanner and the computer, turn off the computer and temporally disconnect the devices connected to or from the scanner. If, after disconnecting these devices, the scanner works, it is likely that another device may have issues or may be unable to work with other parallel devices.
PC Windows users verify no TSRs are running in the background
Press CTRL + ALT + DEL and end task all currently running software except explorer and systray and attempt to scan again. If this resolves your issue it's a possibility that an application in the background such as a virus utility is preventing your scanner from scanning.
Verify the LPT port mode
PC users ensure that the LPT port mode within the computer BIOS is set to either EPP or bi-directional mode and/or try alternating between these two modes.
Update the drivers
Verify that the latest drivers are installed for the operating system being used on your computer. A listing of computer scanner manufacturers and links to the drivers pages can be found on our scanner drivers page.

Nov 19, 2009 | HP LaserJet 3055 All-In-One Printer

1 Answer

Im working on a Mac & my scanner is not working. Keeps saying its not connected. How do i scan!??


my printer was connected properly, but scanner was just not working and kept coming up with the error message. so i unconnected it from my computer. Deleted it from my print queue and then re-added it and plugged it all back in and did a restart.

Nov 13, 2009 | HP Officejet Pro 8500 Wireless All-In-One...

1 Answer

Scanner not working..


This is what HP has to say about unable to scan
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00803473&lc=en&dlc=en&cc=us&product=441125&rule=662&lang=en

if this doesn't fix the problem, you have to uninstall adn reinstall the software.
Note: install the printer software on the computer first, then connect the printer to the computer.

Nov 05, 2008 | HP Officejet 5610 All-In-One InkJet...

1 Answer

Installation problems


How do you connect the mfc to your computer/laptop? In case you use usb make sure that the cable isnt longer than 3m and it is connected directly to your comp/lap usb. Do NOT connect to a hub. This causes a prob with the scanner.
In case you have it installed within a network (RJ45) there is a guide which can be download from brother homepage of your country. It explains the settings and installing for the scanner and printer.

Oct 31, 2007 | Brother MFC-5840CN All-In-One InkJet...

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