Canon imageCLASS MF4690 MF4600 Series Scanner Driver Guide - Page 64
reinstall it. See Installing/Uninstalling Software, in, Read512Bytes=0 to Read512Bytes=1, then
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Page 64 highlights
Introduction 1 Scanning a Document 2 Troubleshooting 3 Appendix 4 Q Are you using a USB 2.0-compatible USB hub? A If you connect the machine to a USB 2.0-equipped computer using a USB 2.0-compatible USB hub, you may not be able to scan. In this case, connect a USB cable directly to the computer. A If you connect the machine to a USB 2.0-equipped computer, you may not be able to scan. If your PC is equipped with two or more USB ports, try connecting the machine to another USB port. If the problem persists, follow the procedure below to modify the INI file. It is recommended to make a backup copy of the file before making any changes to it. 1. Open the following file in Notepad or another text editor application. Windows 98/Me: windows\system\CNCMFP30.INI Windows 2000: winnt\system32\CNCMFP30.INI Windows XP/Vista: windows\system32\CNCMFP30.INI 2. In the [ScanSize] section, change "Read512Bytes=0" to "Read512Bytes=1," then save the file. Take care not to modify any other parts. Back Previous Next TOP Q Have you specified the document source correctly with the MF Toolbox, ScanGear MF, or WIA driver? A Choose between placing the document on the platen glass or in the ADF. Q After installing the software for this machine, did you install a TWAIN-compatible application? A The TWAIN system file is replaced with something inappropriate and you will be unable to scan images. If this happens, remove the software, then reinstall it. (See "Installing/Uninstalling Software," in the Starter Guide.) Table of Contents Index 3-3