If you are experiencing issues on Mac OS X, either with installing your scanner or starting a scan from the Mac, then there may be a communication issue between your computer and the scanner. Other indicators of a communication-related issue include software error messages, and it may be the cause of other scanning issues such as poor image quality.
The possible causes of a communication-related issue and the troubleshooting steps are outlined in this article. We also recommend following this article if you have experienced problems in successfully installing your scanner on your Macintosh computer.
For trouble-free operation, we recommend ensuring that you are running the latest version of your edition of Mac OS X. Download and install any available system updates and restart the Mac before starting the troubleshooting.
You can check the specific OS Version via Apple menu > About This Mac.
You can check for updates via Apple menu > Software Updates.
Supported Mac OS X Versions for Epson scanners and All-In-Ones
Last update version
Some products require a minimum of 10.2.4, 10.2.6 is preferred.
Most current products require a minimum of 10.2.8.
Supported. Both PowerPC and Universal Binary versions available.
Supported. Both PowerPC and Universal Binary versions available.
Most recent Epson Scanners and All-In-One products have support for Leopard.
All Scanners/All-In-One products with scanner driver support in 10.4.x have support in 10.5.x, the previous drivers being suitable to use in the new environment.
10.6 (Snow Leopard)
10.6.8 (support ongoing)
10.7 - 10.10
The most recent Epson Scanners and All-In-One products have support for Leopard.
Due to Apple no longer supporting 'Rosetta', only Universal (Universal Binary) drivers are suitable to use in Mac OS 10.7 and higher. Epson Scan version 3.1 and higher.
To troubleshoot the scanning issues, follow the steps below.
This article is most applicable to Epson scanners and All-In-One products which are connected to the Mac via a USB (or for some scanners, FireWire) cable connection.
If you are using an Epson Wi-Fi enabled All-In-One wirelessly, the steps to check this direct cable connection do not apply to your setup.
Please check that wireless printing is possible. If it isn't, see the following article and return to this article if you experience any problems scanning:
Check the data cable (USB, or FireWire) connection at both ends.
Skip to step 2, "Test the scanner operation", if you have an All-In-One with an integrated wired Ethernet or wireless interface and are using it over a network.
Otherwise, connect the scanner's data cable directly to a port on the Mac.
Do not connect the scanner via a third party device such as another FireWire device, an external USB hub or switch, a USB extension cable, or a USB port in a keyboard.
Use a data cable that is no longer than 1.8m. Anything longer than this can reduce reliability.
Open the System Profiler from Applications\Utilities. In the Apple System Profiler, check if the USB or FireWire scanner is detected.
If the Epson scanner appears: The scanner is detected by the Mac, therefore the issue is related to the Mac OS or the driver installation.
If the Epson scanner does not appear: There is a physical communication issue as the scanner is not detected on either the FireWire or USB Bus. Check the data cable connections again.
As the System Profiler does not update itself quickly, if you reconnect the data cable you should allow it a few minutes to update.
If this fails, disconnect all other USB or FireWire devices and restart the Mac with only the Epson scanner directly connected to a port on the Mac.
Epson also recommends changing the data cable for a different, known-working cable. If the Epson scanner is not detected in the System Profiler, test the scanner on a different computer (Mac or Windows) where possible.
If you are using a scanner which has both a USB and FireWire port, you could try using the other interface connection. Allow the System Profiler a few minutes to update after reconnecting the device or restart the Mac.
Accessing System Profiler in 10.1, 10.2:
Click on Devices and Volumes tab. Check under either USB Information or FireWire Information depending on the way that your scanner is connected to the Mac. If any devices are detected, they will be listed here.
Figure 1: Devices and Volumes tab
Accessing System Profiler in 10.3, 10.4, 10.5, 10.6, 10.7:
Click on the Hardware branch to expand the list of devices below. Click on either USB or FireWire depending on the way that your scanner is connected to the Mac. The USB Device Tree appears on the right, listing the devices including scanner detected on the USB Bus. Any detected FireWire devices, including scanner, will be listed in the information window on the right under FireWire Bus.
Figure 1: USB Device Tree in the System Profiler (10.3)
If the scanner is detected and there are no error lights displayed, test the scanner's operation using EPSON Scan. This is located in the Applications folder.
For scanners using EPSON TWAIN, use a TWAIN-compliant application such as Adobe Photoshop. However, as there are known issues with some versions of Photoshop please see the following articles for advice:
If scanning is possible, this should rule out both a hardware and a communication issue and may be indicative of a driver installation problem. In this instance, we suggest fully removing and reinstalling the scanner software using the procedure detailed below.
Check the scanner driver version
Many scanner drivers, utilities and applications are available to download free of charge from the support pages of the Epson UK website. Epson periodically updates software and we recommend ensuring you are using the latest and correct scanner driver (Epson Scan or Epson Twain, depending on your product).
Some known issues are detailed below. We recommend that you continue to follow this troubleshooting, but be aware of these known issues and update the installed version of Epson Scan if possible.
Mac OS 10.5
When using EPSON Scan v. 3.1 and 3.2 only, a crash or freeze may occur
Once you have removed the scanner software, follow the steps in the same article to reinstall the driver. Generally, we recommend that you download and install the latest driver from the Epson Support website.
Note for Mac OS X Lion (10.7) users:
Mac OS X Lion onwards.
For some USB scanners in Mac OS 10.7 (Lion) onwards, the driver may already be available within the operating system and will be installed when you connect your Epson product to the computer and power it on.
For most Perfection 'V' series scanners and network-enabled All-In-One products, we recommend continuing to the Epson website to download and install the latest software for your product.
Make sure that you follow all the steps in the above article after you have installed the scanner driver. When complete, power on your Epson product; it should now be ready to use. Try testing the scanner software again. For products using Epson Scan, open it directly from Applications\Epson Scan.
What to do if the troubleshooting fails
If scanning fails, test the scanner on a different computer system (we recommend using Windows instead of OS X, or a different version of OS X) where possible. This will help determine where the problem lies.
If you can successfully use the scanner on a different computer, the problem is with the Mac system and we recommend contacting your computer supplier or Apple for support.
If you are still unable to scan when using a different computer, we recommend taking the scanner to a local Epson Express Centre to test the connection or contact Epson for support.