If scanned images contain streaks, or if the scanned documents become dirty, the sensor glass or rollers inside the scanner may be dirty. Clean them periodically.
- Open the document eject tray.
![](/library/attachments/ServiceWareImages/LDImages/ISG/DRscanners/M140/M140_OpenDocumentTray.gif)
- Raise the OPEN lever, and open the upper unit.
![](/library/attachments/ServiceWareImages/LDImages/ISG/DRscanners/M140/M140_OpenUpperUnit.gif)
- Used compress air to remove dust and paper particles from the inside of the scanner.
- Wipe any dirt off the scanning glass.
Wipe any dirt off the scanning glass with a cloth that has been dampened with water and thoroughly wrung out, and then wipe the glass dry with a clean, dry and soft cloth.
![](/library/attachments/ServiceWareImages/LDImages/ISG/DRscanners/M140/M140_ScanningGlass.gif)
![](/library/attachments/ServiceWareImages/LDImages/ISG/DRscanners/6010C_caution.gif)
Do not spray water or neutral detergent directly on the scanner. Precision mechanisms, such as the light source, may get wet, and cause a malfunction.
![](/library/attachments/ServiceWareImages/LDImages/ISG/DRscanners/BlueImportant.gif)
Scratches on the sensor glass may cause marks on the images, as well as feeding errors.
- Clean the rollers.
Clean the rollers while turning them. Wipe the rollers with a cloth that has been dampened with water and thoroughly wrung out, and then use a clean, dry and soft cloth to wipe away any moisture.
![](/library/attachments/ServiceWareImages/LDImages/ISG/DRscanners/M140/M140_Rollers.gif)
- Remove the retard and feed roller.
![](/library/attachments/ServiceWareImages/LDImages/ISG/DRscanners/BlueImportant.gif)
Remove the retard roller and feed roller from the scanner to clean them, and be sure to reattach them to the scanner when cleaning is finished.
- Wipe the removed rollers with a cloth that has been dampened with water and thoroughly wrung out.
![](/library/attachments/ServiceWareImages/LDImages/ISG/DRscanners/M140/M140_WipeRollers.gif)
- Reattach the retard roller and feeding roller.
- Close the upper unit by gently pushing it up on the left and right sides. Push until it clicks into place to make sure that it is completely closed.
![](/library/attachments/ServiceWareImages/LDImages/ISG/DRscanners/M140/M140_CloseUpperUnit.gif)
- Close the document feed tray.
![](/library/attachments/ServiceWareImages/LDImages/ISG/DRscanners/M140/M140_CloseDocumentFeedTray.gif)