Xerox Documate 4790 User Guide

							Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide9-183
Cleaning the ADF Sensors
1. Pull on the scanner cover release and lift the lid to open the scanner.
2. The following illustration shows the location of the sensors in the scanner.  
						

							Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide 9-184 3. Point the tip of the blower at the sensor and squeeze the blower to direct a puff of air at the sensor head to 
remove dust.
Do this for each sensor in the scanner.
Clearing Paper Jams
If your scanner stops scanning due to a paper jam in the Automatic Document Feeder, use the following 
procedure to remove the paper from the scanner.
1. Pull on the scanner cover release and lift the lid to open the scanner.
Do not attempt to remove a jammed page with the ADF door closed. 
						

							Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide9-185 2. Remove the jammed page from the scanner.
3. Close the ADF door and continue scanning.
To reduce the number of paper jams, smooth and straighten the paper before scanning and adjust the paper 
guides to the paper size.
Troubleshooting
Problem: The scanner won’t scan. What’s wrong? 
Check for one of these possible problems:
•Are the cables loose or not plugged in securely? Inspect the cable connections. Make sure the cables are 
plugged in securely.
•Is the scanner’s status light on? Turn on the scanner’s power. If the status light doesn’t come on, plug the 
power supply into another electrical outlet. If you are using a UPS battery back-up or power strip, try 
plugging the scanner directly to a wall outlet.
•Did you restart the computer and scanner? If the scanner gets a paper jam, or looses connection because 
of an error, try restarting your computer and power cycling the scanner.
•Did you plug the scanner into a USB hub? If you’re using a USB hub to connect the scanner try plugging 
the scanner’s USB cable directly to the back of the computer. It is not recommended that you use the 
scanner with a USB hub, if you are using a hub, the hub must have its own power supply.
•Is the USB cable 6’ or less? If you are using a USB cable that is longer than 6’ you may lose connection to 
the scanner. The recommended USB cable length is 6’ or less, the USB cable provided with your scanner is 
within this range.
•Did you select another image source in the scanning software? If you use multiple imaging devices with 
your computer, such as a camera, all-in-one printer, or another scanner, you may have selected another 
source for images. Make sure Xerox DocuMate 4790 is the selected scanner.
Problem: The scanned images are of poor quality. What do I do?
There are various reasons why the scanned image is of poor quality. The original document may not be of good 
quality, the scanner glass may be dirty, or a shading adjustment may be needed.
• If the original is crinkled, torn, dirty or smudge, try scanning from the Kofax Virtual ReScan (VRS™) software. 
VRS is a powerful image enhancement application that you can use to filter this type of noise from the 
document during image processing. The resulting image is of a quality equal or greater to the original.
• Try cleaning the scanner. The scanner glass is where the image is captured as the page is pulled through the 
scanner. Lift up on the exit release, under the input tray, to open the scanner. There is glass in the body of the 
scanner and underneath the lid. Take a soft cloth and wipe across both pieces of glass. The section Cleaning 
the Scanner Glass and Background Plates on page 181 contains thorough instructions for cleaning this part 
of the scanner.
• If cleaning the glass does not improve the image quality, try performing a shading adjustment. The shading 
adjustment recalibrates the scanner. Please see the section Shading Adjustment on page 174 for 
instructions. 
						

							Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide 9-186 Problem: I got an “SVS001” error when installing Kofax VRS. What do I do?
The message “SVS001: The VRS installation does not install an ISIS driver for the scanner you selected. Please 
install the ISIS driver packaged with your scanner.” is not an error message. Please click on OK to finish the 
installation. 
This is a message informing you that the software does not install an ISIS driver. This is the correct behavior of 
the Kofax VRS software, the ISIS driver for your scanner was installed when you chose an ISIS installation option 
when installing the scanner driver. 
Problem: Why does my scanner not function after performing a system restore on Windows XP or Windows 
Vista?
The system restore process may have corrupted some of the driver components. It is recommended that you 
reinstall your scanner driver. Please refer to Uninstalling Your Scanner on page 187 for installation instructions.
Problem: Why won’t my scanner buttons work after scanning with Windows Image Acquisition (WIA)?
After performing a scan using the WIA interface you must close the application you were using before scanning 
with the buttons on the scanner. This does not occur when scanning using the TWAIN or ISIS interface.
Problem: Why won’t my scanner work after the computer has been sitting idle for several hours?
To resolve the problem, simply turn off the scanner power then turn it back on again.
This may occur after Windows goes into power saving mode to “hibernate” the computer into a low power state. 
When you move your mouse or type on the keyboard it “wakes” the computer back up and restores full power to 
the system. This power fluctuation during the computer’s hibernating period may sometimes cause the scanner 
to lose communication to the computer.
Problem: The USB cable was unplugged while scanning, now the scanner won’t work. What should I do?
Simply turn off the scanner power then turn it back on again. This will reset the scanner and make it available for 
scanning.
Problem: When using "Create single image files" not all of the pages scanned are sent to the destination I 
chose. Where are they?
There are a limited number of times that an application can open. When "Create single image files" is selected 
and you are scanning to a destination application, each side of the page scanned will open a new instance of 
that application. If you want to have an image open in an application immediately, limit your scan batch to less 
than 5 pages.
Alternatively, you can set your destination to be a folder location on your computer or network using "Transfer to 
Storage". Select any file format and then scan a large batch of papers. At the end of scanning, the driver will 
immediately save all pages scanned to that folder location without opening an application. 
						

							Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide9-187 Problem: I have selected "Skip Blank Originals" but not all of the blank pages have been removed. Why are 
there still blank pages in the file? 
If you are scanning light weight paper, such as 16lb or 18lb printer paper, the scanner may be picking up faint 
images through the paper and the driver will not drop those pages out of the final file. The "Skip Blank Originals" 
result will vary based on the DPI range and paper weight. Generally 100 dpi or 150 dpi produces the best results.
Problem: I tried to 'Repair' the OneTouch application by using the 'Change' function through the Add/
Remove Program within the Control Panel and was not able to repair it. How do I repair OneTouch?
1. Before attempting to repair OneTouch, unplug the USB cable connected to the scanner. 
2. Perform the Change/Repair function again. If you are asked for the Install DVD, insert the disc into the DVD-
ROM player and click OK. 
3. When prompted, plug the USB cable back into the scanner. 
4. When the installation process finishes, click OK on the Complete The Installation window, and then click 
Close. 
5. Reboot your computer.
Problem: OneTouch no longer functions after installing Internet Explorer 7 on Windows XP. How do I resolve 
this issue?
This is a known issue where OneTouch stops responding when Internet Explorer 7 is installed after the scanner. To 
resolve the issue:
1. Open the Windows Add/Remove Programs feature from the Control Panel. 
2. Find Windows Internet Explorer 7 and uninstall it using the change/remove options. Follow the wizard 
through a complete removal of the Internet Explorer 7 software. 
3. Find OneTouch and uninstall it using the change/remove options. Follow the wizard through a complete 
removal of the OneTouch program. 
4. Unplug your scanner's USB cable from the computer. 
5. Reboot your computer. 
6. Install Internet Explorer 7. 
7. Install your scanner driver.
Problem: I am getting an error message that OCR fails every time I try to scan using the OCR features from 
OneTouch. What is the problem?
Anti-SpyWare software that is set to always run may interfere with the driver functionality. It is recommended 
that you temporarily disable or suspend the automatic protection feature during scanning. After scanning is 
complete and your file has been saved, turn the auto-protect feature back on. You do not need to close the Anti-
SpyWare software.
Uninstalling Your Scanner
Use the options in the Windows Control Panel to remove the scanner driver and modules, and any other software 
provided with the scanner. 
						

							Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide 9-188 Please leave the scanner’s USB cable plugged into the computer while uninstalling the scanner driver. Unplug the 
USB cable when directed to do so in the instructions below.
Open the list of installed programs in the Windows Control panel.
• Windows XP: Open Add/Remove Programs
• Windows Vista and later: Open Programs and Features
Uninstalling the scanner driver:
1. In the list of installed programs click on Xerox DocuMate 4790 or Xerox DocuMate 4799 driver.
2. Click the Change/Remove or Uninstall button.
3. Click Yes when asked to confirm that you want to remove the driver.
The driver will now be removed from the computer. When the driver uninstallation is complete the progress 
window will automatically close.
4. Turn off the scanner and unplug the USB cable.
5. Reboot the computer if you are prompted to do so.
Follow these instructions to remove any of the other software you installed with your scanner. Depending on the 
software provided with your scanner, and which applications you installed during the scanner setup, the 
application list may include:
• Visioneer OneTouch
• Visioneer OneTouch OmniPage OCR module
• Visioneer OneTouch VRS module
•Nuance PaperPort
•Nuance OmniPage
• Nuance PDF Converter
•Kofax Virtual ReScan
Uninstalling Visioneer Acuity™:
Visioneer Acuity is automatically installed when you install the scanner driver using the installation disc. You can 
also download the Visioneer Acuity module from the support pages for your scanner at www.xeroxscanners.com. 
Visioneer Acuity is a utility with advanced image processing options to instantly improve the visual clarity of 
anything you scan.
1. In the list of installed programs select Visioneer Acuity Assets.
2. Click Yes when asked to confirm you want to remove the software.
Depending on the method of installation, and your scanner model, there may be multiple entries for Visioneer 
Acuity in the installed programs list. The additional entries in this list are the image processing libraries needed to 
support various scanner models. These additional items will be called “Visioneer Acuity Assets” followed by a 
version number. In the scenario described here, when you want to uninstall Visioneer Acuity make sure you select 
and uninstall Visioneer Acuity. If you uninstall one of the entries labeled as an “asset” you will still need to 
uninstall the main Visioneer Acuity utility. 
						

							Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide9-189
Xerox DocuMate 4790 Specifications
Optical resolution600 dpi
Bit depth24-bit color, 8-bit grayscale, 1-bit bitonal (black & white)
Scan methodDuplex Automatic Document Feeder (ADF)
ADF specifications
Maximum item size 12" x 100" (305 mm x 2540 mm)
Minimum item size 1.9" x 2.8" (48 mm x 71 mm)
Scanning Speed Portrait
- 70 pages per minute / 140 images per minute @ 200 dpi
Landscape
- 90 pages per minute / 180 images per minute @ 200 dpi
Capacity 200 pages of 20 lb printer paper (75~80 g/m
2)
Paper Thickness 5 ~ 42 lbs. (19 ~ 157 g/m
2)
Image SensorDual CCD
Light sourceDual White LED lamps
InterfaceHi-Speed USB 2.0, compatible with USB 1.1
Scanner dimensions
Width 18.50 inches (468 mm)
Depth 17.50 inches (444 mm)
Height 13.40 inches (339 mm)
Weight39.7 pounds (18 kg)
Operating temperature59° ~ 86° F (15° ~ 30° C without condensation)
Relative humidity20% ~ 80% (@30° C without condensation)
Power supply100-240Vac
AC Power cord US—2P+G, 10A/125V, L=2000mm, 3X18AWG, BLACK, RoHS
EUR(CEE)—2P+G, 10A/250V, 3*1.00mm
2, L=2000mm, BLACK, RoHS
UK(BS/PSB)—2P, 10A/250V, 3*1.00mm2, L=2000mm, BLACK, RoHS
Power consumption≤ 100 Watts (during operation)
≤ 35 Watts (on standby)
≤ 3.5 Watts (power save after 15 minutes without scanning, can be adjusted by 
software)
0 Watt (power off)
USB cable2400mm, 28AWG, RoHS compliant
Safety and agency 
certificationsUL, C-UL, FCC Class A, CE, CB, WEEE, RoHS, ENERGY STAR
Supported Operating 
SystemsMicrosoft Windows
- 32-bit XP (Service Pack 2 or 3)
- 32-bit or 64-bit Vista (Service Pack 1 or 2)
- 32-bit or 64-bit 7 (Service Pack 1)
- 32-bit or 64-bit 8
Scanner DriversTWAIN, WIA, ISIS
Bundled SoftwareVisioneer OneTouch®
Nuance PDF Converter®
Nuance OmniPage®
Kofax Virtual ReScan® (VRS™) 
						

							Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide 9-190
Xerox DocuMate 4790 Scanner Parts List
Please use the following part names and numbers when ordering replacements for your scanner.
Part NamePart Number
Roller Exchange Kit
• Double Feed 
Prevention Roller
• Feed Roller Module70-0565-000
USB Cable 35-0113-000
Power Cord 35-0233-000 (U.S.)
35-0235-000 (EUR)
35-0236-000 (U.K.)
Blower Brush 57-0122-000
Roller Cleaning Paper 05-0722-000
Shading Paper 05-0724-000
Imprinter kit 70-0537-100 
						

							Xerox® DocuMate® 4790
User’s GuideA-
191
ARegulatory Information
Basic Regulations
United States (FCC Regulations)
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference 
when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate 
radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause 
harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will 
be required to correct the interference at his own expense.
WARN ING: 
In order to allow this equipment to operate in close proximity to Industrial, Scientific and Medical (ISM) 
equipment, the external radiation from ISM equipment may have to be limited or special mitigation measures 
taken.
Changes and modifications to this equipment not specifically approved by Xerox may void the user’s authority to 
operate this equipment.
Shielded cables must be used with this equipment to maintain compliance with FCC regulations.
European Union
The CE mark applied to this product, symbolizes Xerox’s declaration of conformity with the following applicable 
European Union Directives, as of the dates indicated:
This machine is certified as Class 1 LED product. This means that this machine does not produce hazardous laser 
radiation.
December 12, 2006: Council Directive 2006/95/EC as amended. Approximation of the laws of the member states 
related to low voltage equipment.
December 31, 2004: Council Directive 2004/108/EC as amended. Approximation of the laws of the member states 
related to electromagnetic compatibility. 
						

							Regulatory Information
Xerox
® DocuMate® 4790
User’s Guide A-
192 A full declaration of conformity, defining the relevant directives and referenced standards, can be obtained from 
your Xerox Limited representative or by contacting:
Environment, Heath and Safety
The Document Company Xerox
Bessemer Road
We l w y n  Ga rde n C i t y
Herts
AL7 1HE
England, Telephone +44 (0) 1707 353434
Other Regulations
Turkey (RoHS Regulation)
In compliance with Article 7 (d) We hereby certify “It is in compliance with the EEE Regulation”. 
(“EEE yönetmeliğine uygundur“)
Copy Regulations
United States
Congress, by statute, has forbidden the reproduction of the following subjects under certain circumstances. 
Penalties of fine or imprisonment may be imposed on those guilty of making such reproductions.
1. Obligations or Securities of the United States Government, such as:
Bonds and Obligations of certain agencies of the government, such as FHA, etc.
Bonds. (U.S. Savings Bonds may be photographed only for publicity purposes in connection with the 
campaign for the sale of such bonds.)
Internal Revenue Stamps. (If it is necessary to reproduce a legal document on which there is a canceled 
revenue stamp, this may be done provided the reproduction of the document is performed for lawful 
purposes.)Certificates of Indebtedness  National Bank Currency
Coupons from Bonds Federal Reserve Bank Notes
Silver Certificates Gold Certificates
United States Bonds Treasury Notes
Federal Reserve Notes Fractional Notes
Certificates of Deposit Paper Money