Chapter 3 Appendices 1. Regular Maintenance ......58 Cleaning the Scanner ........ 58 Cleaning Inside the Scanner ..... 58 Cleaning the Scanning Glass and the Rollers ............59 Cleaning the Metal Rollers ......61 2. Removing and Attaching the Rollers 62 Roller Replacement Cycle ......
1. Regular Maintenance Perform the regular maintenance described below to maintain peak scanning quality. CAUTION • When cleaning the scanner or the inside of the scanner, turn OFF the power switch and unplug the power cord from the outlet. • Do not use spray cleaners to clean the scanner. Precision mechanisms inside the scanner may get wet and result in malfunction.
IMPORTANT Scratches on the scanning glass may cause marks on the images and could cause feeding errors. If there are scratches on the scanning glass, contact your local authorized Canon dealer or service representative. Appendices...
Rotate the rollers (a) and (b) as you clean them. Moisten a cloth with plain water, wring out excess water, wipe the rollers and then dry it with a clean dry cloth. Feed Roller Retard Roller Remove the feed roller and retard roller. (See p. 66, p. 69.) IMPORTANT After removing the feed roller and retard roller, clean them and then return them to the scanner.
Cleaning the Metal Rollers Turn on the scanner. Open the document feed tray. Pressing the OPEN knob from both sides (a), pull the front unit forward to open it (b). Use a clean dry cloth to wipe the metal rollers ( parts in the illustration).
• Be sure to reset the counter after replacing the rollers. (See “Resetting the Counter,” on p. 63.) • Contact your local authorized Canon dealer or service representative for information about the exchange roller kit (feed roller and retard roller).
Resetting the Counter After replacing the feed rollers, open the [Counter setup] dialog box and reset the counter. Follow the procedure below to open the [Counter setup] dialog box. 1. Click the [Start] button, click [Settings] on the Start menu click [Control Panel].
3. Select [CANON DR-2050C USB], and then click [Properties]. 4. Click the [Counter] tab. Appendices...
Click the [Reset] button, and then make sure that the [Retard and Feed roller] has been set to 0. Removing and Attaching the Feed Roller Follow the procedure below to remove and attach the feed roller for cleaning or replacement. Note When attaching the feed roller during installation, operate the roller fastening lever according to the removal procedure and then attach the feed roller.
Removing the Feed Roller Pressing the OPEN knob from both sides (a), pull the front unit forward to open it (b). Open the roller cover on the scanner side. Insert a finger into the depression in the cover and open it. Raise the roller lock lever (a), and then slide it to the left (b).
Shift the feed roller to the left to separate it from the shaft, and then remove it. Attaching the Feed Roller Set the feed roller into the hollow inside the roller cover, and align the notch in the roller with the scanner shaft. Slide the roller lock lever to the right, and then insert the shaft into the hole on the left side of the roller.
Lower the lever to lock the roller shaft. Close the roller cover. Return the cover fully to its original position until you hear it click into place. Gently press the left and right sides of the top of the Front Unit. Return the unit fully to its original position until you hear it click into place.
CAUTION Do not use excessive force when removing or attaching the rollers. Doing so may damage them. Removing the Retard Roller Pressing the OPEN knob from both sides (a), pull the front unit forward to open it (b). Holding the edges of the roller cover on the inside of the front unit, open the cover.
Shift the Retard Roller to the left to separate it from the shaft, and then remove Attaching the Retard Roller Position the retard roller so the notch in the roller is facing the scanner’s shaft. Slide the roller lock lever to the right, and then insert the shaft into the hole on the left side of the retard roller.
Push the roller lock lever towards the back of the scanner to lock the retard roller in place. Attach the roller cover. Be sure that the upper unit is completely closed by pushing on both edges with both hands until you hear a click. Gently press the left and right sides of the top of the front unit.
Scanning Results Are Not as Expected......P. 75 If, after consulting this section, you still cannot resolve the problem, contact your local authorized Canon dealer or your service representative. The Scanner Does Not Turn ON Check the following if the scanner does not turn on: •...
The scanner does not support your USB interface. Solution This product is not guaranteed to operate with all types of USB interfaces. Contact your local authorized Canon dealer or service representative for more information. (See p. 15.) Problem The scanner does not support the USB cable.
The rollers inside the scanner are dirty or worn. Solution Refer to p. 59 and clean the rollers. If the rollers are worn, then they need to be replaced. Contact your local authorized Canon dealer or service representative to purchase a roller replacement kit.
Paper Is Not Ejected Correctly When you are performing page-by-page scanning while a multi-page document is set in the scanner, scanning pauses with the trailing edge of the scanned sheet being engaged by the eject roller. Problem Under these conditions, the scanner enters a standby state and pauses for the next sheet.
Clean the scanning glass and rollers. If lines still appear on the image even after cleaning the scanning glass and rollers, the scanning glass inside the scanner may be scratched. Contact your local authorized Canon dealer or service representative. (See p. 59.) Appendices...
Windows [Start] button, and then click [Programs] (All Programs in the case of Windows XP) [Canon Document Scanner], and then [DR-2050C & 2080C Adjustment Tool], or use the [Scanner Adjustment] function of the ISIS/ TWAIN driver. Follow the instructions on the dialog box that appears on the screen to adjust the scanner.