Xerox Documate 4790 User Guide

Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide9-173
Fxx System error occurred. An unknown system 
error has occurred.Reset the scanner and computer:
1. Turn off the scanner power.
2. Unplug the USB cable and power from the 
scanner.
3. Reboot (restart) the computer.
4. Plug the USB cable and power cable back 
into the scanner.
5. Turn the scanner back on.
If you are still unable to scan, contact Xerox 
Technical Support. Please refer to the Technical 
Support Card...

Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide 9-174
Setting Sleep Mode
Your scanner has a built-in power saving feature that sets the scanner into low power when the scanner has been 
sitting idle for 15 minutes. This default setting conserves power and complies with the ENERGY STAR 
requirements. Power saving extends the life of the lamps by turning them off when not in use.
1. Open the scanner User Utility application.
2. On the main window click on the Sleep Mode...

Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide9-175 • After cleaning the scanner, do a test scan and view the final image file. Do not perform a shading 
adjustment until after you clean the scanner and test scan. A shading adjustment performed before cleaning 
the scanner may result in degraded image quality.
• Have the Shading Paper, provided with your scanner, ready as the software will tell you when to insert it into 
the scanner.
• Make sure the Shading Paper is...

Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide 9-176 5. Change the background plates to white then click on OK to proceed. 
Close the scanner before continuing with the shading adjustment.
If you have already changed the plates to white you will not see the above message. Proceed to the next 
step.
6. Place the Shading Paper in the scanner’s input tray in the Landscape position then click on OK.
7. The scanner will pull the Shading Paper through as it sets the...

Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide9-177 Note: Do not place the Shading Paper in the scanner. The Shading Paper is not used for the black background 
shading adjustment.
9. The Now Adjusting message box will close automatically when the black background Shading Adjustment is 
complete.
10. Click on OK to complete the shading adjustment.
Restoring the Default Shading Adjustment
You can reset the shading adjustment to the factory default setting if...

Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide 9-178 2. Using the blower brush, brush away any dust build up around the ventilation openings. 
3. Using a soft dusting cloth, wipe down the body of the scanner, input tray and exit area. Make sure that the 
input and exit slots in the scanner are also clean. 
4. If there is any accumulation of dust in the indentations around the buttons, use the blower brush to gently 
brush away the dust.
5. When you’re finished, press...

Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide9-179 • Use scissors to open the roller cleaning paper bag, cutting across the dotted line.
Cleaning the ADF Rollers
1. Pull on the scanner cover release and lift the lid to open the scanner. 

Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide 9-180 2. The following illustration shows where the rollers are located in the scanner. 
Use a roller cleaning paper to clean all of the rollers indicated in the illustration.
Note: Be careful when cleaning the rollers. All of the rollers, except the free rollers, are designed to rotate in one 
direction only. Do NOT force the roller to rotate in the opposite direction. Forcing the roller to rotate will damage 
it, and...

Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide9-181
Reset the Roller Count in the User Utility
After cleaning the scanner you need to reset the roller count in the User Utility.
1. Open the User Utility application.
2. From the main screen click on Clear Counter next to the field After Clean Roller.
3. The clean roller count will now be reset to 0. 
4. Close the User Utility.
Cleaning the Scanner Glass and Background Plates
1. Pull on the scanner cover release and...

Scanner Options, Maintenance and Troubleshooting
Xerox
® DocuMate® 4790
User’s Guide 9-182 3. Use a soft cloth to wipe off the scanner glass and background plates. If there is sticky residue on either 
surface you can use the roller cleaning paper to remove it.
Cleaning the Paper Sensors
The scanner has several sensors to detect the status of the paper when it is in the scanner. You should clean these 
sensors as part of your standard weekly maintenance of the scanner.
Note: Do not clean the sensors with...