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Article ID: Q141919


Printing Problems with ECP Port

Last reviewed: May 29, 1997

Article ID: Q141919 The information in this article applies to:

•Microsoft Windows 95




When you print to an ECP (Enhanced Capability Port) port, you may

experience any of the following symptoms:


You may receive an error message. The error messages can include:



The port is busy.

Error writing to LPT1.


The printout may be incorrect. Incorrect output can include

incorrectly printed graphics or incomplete pages.

The printer may go offline when you try to print.

You may receive no printout.

The print job may hang the print spooler. You must restart the

computer to clear the hung print job.




This behavior can occur when the ECP port sends information to

the printer faster than the printer can process it.




Change the ECP port to a standard port. To do so, follow these



1.In Control Panel, double-click System.

2.On the Device Manager tab, double-click the printer port.

3.On the Driver tab, click Change Driver.

4.Click Show All Devices.

5.In the Manufacturers box, click Standard Port Types. In the

Models box, click Printer Port, and then click OK.

6.When you are prompted for the Windows 95 CD-ROM, insert the

CD-ROM in the drive. Change the path to

the Lpt.vxd file to the following path, and then click OK:


<cd-rom drive>:\drivers\printer\lpt


If you are not prompted for the Windows 95 CD-ROM in step 6, you

must configure the ECP port as a standard port

using the computer's CMOS settings as well. For information about

configuring the port in the computer's CMOS

settings, please consult the computer's documentation or