Canon imageFORMULA DR-2050C Operating manual

Document Scanner
Maintenance Guide
DR-2050C
DR-2050SP

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 ......................... 62
Resetting the Counter ............................... 63
Removing and Attaching the Feed Roller .. 65
Removing and Attaching the Retard
Roller ......................................................... 68
3. Troubleshooting ................................. 72
The Scanner Does Not Turn ON ............... 72
The Scanner Is Not Recognized ............... 72
Slow Scanning Speed ............................... 73
Scanning Is Not Performed ....................... 74
Documents Are Not Fed Correctly ............ 74
Paper Is Not Ejected Correctly .................. 75
Saved Image Files Do Not Open ............... 75
Scanning Results Are Not as Expected .... 75

58 Appendices
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.
• Never use paint thinner, alcohol, or other organic solvents to
clean the scanner. Such solvents can damage or discolor the
exterior of the scanner, or create a risk of fire or electric shock.
Cleaning the Scanner
Moisten a cloth with plain water, wring out the excess water, and then wipe the
exterior of the scanner to clean it.
Cleaning Inside the Scanner
Dust or paper particles inside the scanner can cause lines in scanned images.
Use a blower for regular cleaning of dust and paper particles from inside the
scanner. After finishing a large scanning job, you should turn OFF the scanner
and then clean any paper particles that are remaining.

Appendices 59
Chapter 3
Cleaning the Scanning Glass and the Rollers
If your scanned images contain lines or smudges, or if the scanned documents
are dirty, then the scanning glass or the rollers inside the scanner may be dirty.
Clean them periodically.
1. Open the document feed tray.
2. Pressing the OPEN knob from both sides (a), pull the front unit forward to
open it (b).
3. Use a blower to keep the interior of the scanner free of dust and paper particles.
4. Use a clean dry cloth to wipe dirt off the scanning glass.
Wipe both the top and bottom scanning glasses.
CAUTION
Do not use spray type cleaners to clean the scanner. Precision
mechanisms, such as the light source, may get wet which will
cause a 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.

60 Appendices
5. 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.
6. 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.
7. Wipe the removed rollers with a firmly wrung cloth moistened with water.
8. Attach the rollers that were removed. (See p. 67, p. 70.)
9. 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.
Feed Roller
Retard Roller

Appendices 61
Chapter 3
Cleaning the Metal Rollers
1. Turn on the scanner.
2. Open the document feed tray.
3. Pressing the OPEN knob from both sides (a), pull the front unit forward to
open it (b).
4. Use a clean dry cloth to wipe the metal rollers ( parts in the illustration).
Press the Scan button and Stop button at the same time to rotate the metal
rollers in small increments.
CAUTION
• There are two metal rollers, one for the Front Unit and one for the
scanner. Be sure to wipe both of them. Do not spray water or
neutral detergent directly on the metal rollers. Doing so can
damage precision mechanisms, such as the light source.
Moisture on the scanner or your hands also creates the risk of
electric shock.
• Scanner power needs to be turned on when cleaning the metal
rollers. Because of this, you need to exercise extra caution when
cleaning them.

62 Appendices
2. Removing and Attaching the Rollers
Follow the relevant procedure to remove and attach the feed roller and retard
roller when you clean or replace them.
IMPORTANT
Feed rollers are consumable parts. When the rollers start to wear out, paper
jams and misfeeds may occur more often. When this happens, buy an exchange
roller kit, and replace the feed roller and the retard roller.
CAUTION
Do not use excessive force when removing or attaching the
rollers. Doing so may damage them.
Roller Replacement Cycle
When the number of pages scanned exceeds 30,000, a roller replacement
message will appear when the computer is started. When you are using the
DR-2050SP in the Presentation mode, a message prompting you to change the
rollers is displayed after the opening screen when the scanner’s power is turned
ON. Buy an exchange roller kit, and replace the feed roller and the retard
roller.
IMPORTANT
• If misfeeds happen often, check the rollers for wear, and replace them if
necessary before the message is displayed.
• 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).
When using the DR-2050SP in Presentation mode

Appendices 63
Chapter 3
Resetting the Counter
After replacing the feed rollers, open the [Counter setup] dialog box and reset
the counter.
1. Follow the procedure below to open the [Counter setup] dialog box.
1. Click the [Start] button, Æclick [Settings] on the Start menu Æclick
[Control Panel]. (For Windows XP, click the [Start] button Æclick [Control
Panel].)
2. For Windows XP, switch the Control Panel to Classic View, or select
[Printers and Other Hardware] in the working field.
Printers and Other HardwareControl Panel (category view)
Control Panel (classic view)

64 Appendices
3. Select [CANON DR-2050C USB], and then click [Properties].
4. Click the [Counter] tab.

Appendices 65
Chapter 3
2. 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.
CAUTION
Do not use excessive force when removing or attaching the feed
roller. Doing so may damage them.