Canon scanner CanoScan FB 620U User Manual

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Problems with the Initial Connection of the Scanner to a USB Port
Scanner Appears as an Unknown Device Not a Scanner
Cause 1: Computer or computer operating system is incompatible with the scanner, or
the USB interface has not been enabled in the BIOS
Solution: The performance guarantee for this scanner and its software is limited to its
operation with computers running Windows 98 that are equipped with a
built-in USB port. Computers running Windows 95 with a USB port on an
optional expansion card fall outside the limits of the guarantee.
Computers with operating systems that have been upgraded to Windows 98
may have the USB interface setting set to Off in the system BIOS. You must
change the BIOS settings to enable the USB interface. Please refer to the
manual that accompanied your computer for these instructions.
Cause 2: Incorrectly connected USB cable
Solution: An incorrect connection to a USB hub or another USB device will prevent the
scanner from working. Check the USB cables to ensure that they are correctly
attached. (See p. 19) 
						

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Problems with Software Installation
Installation is unsuccessful
Cause 1: Insufficient memory to run the installer program
Solution: Close other software programs that are running and reinstall
Cause 2: Insufficient free hard disk space
Solution: Delete or transfer unnecessary files from the hard disk and reinstall.  Refer to
the Quick Start Guide for the required free hard disk space.
Nothing displays when the CanoScan Setup Utility CD-ROM is placed in the drive
Cause: CD-ROM will not automatically run the menu program
Solution: Start the menu program manually (See Quick Start Guide)
Problems Starting Software Programs
[TWAIN problem] message is displayed  (Windows)
Cause 1: Scanner not detected because the AC adapter is not correctly plugged into
the electrical outlet
Solution:Plug the AC adapter securely into the electrical outlet (See Quick Start Guide)
Cause 2: Scanner not detected because the power cord plug is not correctly connected
to the scanner
Solution: Reconnect the power cord to the scanner (See Quick Start Guide)
Cause 3: Scanner not detected because the USB interface cable is not correctly con-
nected to the computer or the scanner.
Solution: Reconnect the USB interface cable to the scanner or the computer
(See Quick Start Guide) 
						

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Problems starting ScanGear CS-U as a TWAIN driver from within another application
Cause 1: Insufficient memory (RAM) available to start ScanGear CS-U
Solution: Close other programs and start ScanGear CS-U
Cause 2: ScanGear CS-U already running as a TWAIN driver within another application
Solution: Close the ScanGear CS-U already running as a TWAIN driver (See ScanGear CS-U
UserÕs Guide electonic manual)
Cause 3: ScanGear CS-U is not installed
Solution: Install ScanGear CS-U (See Quick Start Guide)
Cause 4: Application program is not TWAIN_32 compatible
Solution: Start ScanGear CS-U from within a TWAIN_32 compatible program
Cause 5: The scanner not selected
Solution: Select scanner following the directions included in the application manual 
						

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Problems with the Scanner
Scanner not identified
Cause 1: Scanner not powered on when computer is started
Solution: Plug in the AC adapter to an outlet
Cause 2: USB interface cable is disconnected or loose
Solution: Securely connect USB interface cable (See Quick Start Guide)
Cause 3: Computer has not correctly recognized scanner
Solution: Use the following procedures to have the computer recognize the scanner
1. Click the Windows [Start] menu and select [Settings] and [Control Panel].
2. Look for an icon labeled [Scanners and Cameras]. Double-click it.
3. Confirm that CanoScan FB620U appears in the list of installed devices.
The computer will not detect the scanner correctly if the Scanners and
Cameras icon is missing or the respective CanoScan FB620U item is missing
from the list. If either is missing, you must restart the installation from the
beginning. (See Quick Start Guide) 
						

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Problems with Scanning
Scanner will not scan
Cause 1: Scanner not powered up
Solution: Securely connect the AC adapter to the scanner and electrical outlet
(See Quick Start Guide)
Cause 2: Scanning unit locked
Solution: Unlock scanning unit by setting lock switch to unlocked position
(See Quick Start Guide)
Cause 3: Software incorrectly installed
Solution: Reinstall software (See Quick Start Guide)
Scanning unit fails to return to ready position (front of scanner)
Cause: AC adapter out of contact with electrical outlet or scanner while scanning
unit in motion
Solution:
Clear all documents and objects from the document glass, close the document
cover, unplug the AC adapter from the electrical outlet and then plug it back in 
						

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Scan quality is poor
Cause 1: Document cover is open
Solution: Close the document cover
Cause 2: Original document floating on document glass
Solution: Gently press down on the document cover to prevent the document from
floating
Cause 3: Improperly closed or floating document cover
Solution: Hold document cover down with hand during scan
Cause 4: Dirty document glass or document cover
Solution: Clean document glass or document cover (See p. 38)
Cause 5: Incorrect scan settings
Solution: Rescan with adjusted settings (See the ScanGear CS-U UserÕs Guide electronic
manual)
Cause 6: A power cord is too close to the scanner
Solution: Move all power cords away from the top of the scanner and surrounding
area
Glossy color photo will not scan clearly
Cause: Optical interference created by the photo adhering to document glass
produces striped patterns
Solution 1: Gently press down on the document cover
Solution 2: Move the photo on the document glass to break the adhesion
Solution 3: Clean the document glass (See p. 38) 
						

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Stripes appear on scan of publication
Cause: MoirŽ effect from scan of publication at high resolution (print screen lines
highlighted by optical interference, producing striped patterns).  The appear-
ance of this effect is dependent upon particular combinations of screen line
densities and scanning resolutions
Solution: Rescan at different resolutions (See the ScanGear CS-U UserÕs Guide
electronic manual)
Whitened edges on image scanned from thick book
Cause:Scanner employs an ultra-sensitive scanning unit that picks up ambient light if
document cover cannot stop light from entering around the edges of the book
Solution: Cover the book and document glass with a dark cloth to prevent ambient
light from affecting the scan
Slow scanning speed
Cause: Resolution is set higher than necessary
Solution: Lower the resolution.
Other questions
Can a Film Adapter Unit be used with this scanner?
Answer: No
Can Automatic Document Feeder be used with this scanner?
Answer: No 
						

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Care and Maintenance
Clean off the dirt and dust that adheres to the exterior, document glass and document cover of the
scanner during the course of ordinary operation using the following procedures.
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1. Power down the computer and peripheral devices.
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2. Unplug the AC adapter from the electrical outlet.
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3. Detach the USB interface cable from the scanner.
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4. Dampen a clean, soft cloth with water and wring the cloth well.  Use the
well-wrung cloth to gently remove dirt and dust.  Be particularly careful to
remove any traces of dirt or liquid from the document glass by wiping it
with a dry soft cloth.
¥ Do not dampen the connectors, ports or other metallic components on the scannerÕs back
panel.  Immediately remove any moisture that contacts these components by wiping
them with a dry cloth.
¥ Do not use a sodden cloth or apply a liquid directly to any portion of the scanner.  Any
moisture that enters the interior, the underside of the document glass or the sensors may
degrade image quality and lead to malfunctions.
¥ Never use substances containing alcohol, thinners or benzene on the equipment.  Use of
these substances may deform, discolor or dissolve the casing. 
						

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5. Thoroughly remove any moisture or water vapor from the scanner with a
dry cloth.
Moisture left on the document glass or cover may damage photographs and other
documents as well as produce poor results.
Never use substances
containing alcohol,
thinners or benzene to
clean the equipment.
Outer CasingDocument
Cover
Document Glass 
						

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CanoScan FB620U
Scanner Type Flatbed (stationary document type)
Scanning Element CIS (Contact Image Sensor)
Light Source Three-color RGB LEDÕs
Optical Resolution 600 x 600 dpi
Selectable Resolution 2.5-2400 dpi
Scanning Bit Depth Color 12 bit input/8 bit output for each color (RGB)
Grayscale 12 bit input/8 bit output
Prescan Speed 15 sec
Start Button Yes
Interface USB
Maximum Document Size A4/Letter, 8.5 x 11.7 in. (216 x 297 mm)
Operating Range Temperature 41¼ to 95¼ F (5¼ to 35¼ C)
Humidity 10% to 90% (without condensation formation)
Power Requirements AC adapter (120V)
Power Consumption 5 watts maximum, stand-by 2.5 watts (Provided AC adapter used)
External Dimensions (w x l x h) 10.1 x 14.7 x 2.5 in. (256 x 372.5 x 63mm)
Weight Approximately 4.4 lbs. (2 kg)
¥ Specifications are subject to change without notice.
Major Specifications