Hp ScanJet Pro 4500 fn1 User Manual download pdf (Page 57)

3. Restart the computer.

4. If the problem still persists, there may be a problem with the touch panel. Contact HP Support at

www.hp.com/support.

Touch screen display issues

The touch panel is having display issues or scanner buttons are not working as expected

The following symptoms indicate a problem with the scanner front panel.

●

Touch panel issues: The display is blank, or part of the display content is missing.

●

Button issues: Buttons are unresponsive, or the wrong action occurs when you press a button (for

example, you get a single-sided scan when you press the Scan Duplex button.

If the scanner exhibits any of these problems, contact HP support at

www.hp.com/support.

Scanning performance issues

Scanner does not scan immediately

Make sure the document feeder hatch is closed, and that the scanner is turned on.

Scanner is scanning items very slowly

When scanning to edit text, the optical character recognition (OCR) causes the scanner to scan more slowly,

which is normal. Wait for the item to scan.

NOTE: Windows: For the best OCR results, scanner compression should be set to the minimum

compression level or be disabled.

Scanning at a higher resolution than necessary increases scanning time and creates a larger file with no

additional benefit. If you are scanning at a high resolution, set the resolution to a lower level to increase

scanning speed.

Scanner scans only one side of a two-sided page

Verify that the selected scan shortcut specifies two-sided scanning.

Scanned pages are missing at the scan destination

When scanning, pages that stick together are scanned as one item. Check to confirm that scanned pages are

not stuck together.

Scanned pages are out of order at the scan destination

●

Verify that the page order of the original document is correct before placing the document face up into

the document feeder.

●

Make sure that there are no staples, paper clips, or any other attached material (such as adhesive

notes) that may cause the pages to feed incorrectly.

●

Verify that pages are not stuck together.

ENWW Scanner operation problems 49

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Hp ScanJet Pro 4500 fn1 User Manual Page 57