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Chapter 7. Troubleshooting
45
Unexpected Scan Results
Scanning problems, such as scanned images that are unclear, contain lines, or are dirty, might
be due to the following causes. Confirm each possible cause and take the appropriate action.
Cause: The scanning glasses and rollers inside the unit are dirty.
Action: For details on how to clean the scanning glasses and rollers, see “Cleaning the Scanning
Glasses and Rollers,” on p.42.)
Cause: The scan settings are inappropriate.
Action: Check the brightness and other settings on the settings screen. For example, if a
document will not scan at all, it is likely that the brightness setting is too high. If the
scan results seem far too black, the brightness setting may be too low.
Cause: The system is not functioning properly.
Action: If scanning is still not performed correctly even when the scan settings are properly
configured, the system may not be functioning properly. Please contact your local
authorized Canon dealer.
Cannot Search for Documents
If you cannot search for documents directly from the CD-4070NW or over the Web, possible
causes are given below. Confirm each possible cause and take the appropriate action.
Cause: You tried searching a disc just after inserting it in the CD-4070NW.
Action: The search index is still being built. Wait a while without operating the CD-4070NW
until this operation finishes.
Cause: The system was shut down uncleanly (e.g., due to a power outage while the
CD-4070NW was being used) causing the backup data index to be cleared.
Action: The backup data index is being rebuilt. Wait a while without operating the
CD-4070NW. Depending on the saved backup data, building the backup data index
may take at least 30 minutes.
NOTE
The CD-4070NW search function uses the operating system's indexing service. Therefore, when trying
to search a disc just after inserting it when the index was cleared (e.g., due to a power outage), it is
necessary to wait until the index finishes being built.
Indexes are rebuilt automatically while the CD-4070NW is in standby mode. No message is displayed
indicating indexes are being rebuilt, so do not operate the CD-4070NW while waiting.
Cannot Search a Text String
When text searching, some strings cannot be correctly searched for. Try shortening the string.