78 Troubleshooting usage and maintaining Back to TOC
When I choose HP Scanning Software on the scanner, the image 
does not appear in the software.
● A cable might be loose. Check that the USB or SCSI cable is 
securely connected.
● You might have accidentally turned off the preview feature. 
Check this setting on the Scanner tab in the Preferences of the 
HP PrecisionScan Pro software. See "Setting preferences" on 
page 60.
● Check that the HP PrecisionScan Pro software is the program 
set to start when you press HP S
CANNING SOFTWARE.
1 Choose Control Panels from the Apple menu, and then 
choose HP ScanJet Controls from the submenu.
2 Click the Buttons tab in the HP ScanJet Controls dialog 
box, and then click the Scan tab.
3 Make sure HP PrecisionScan Pro is selected in the 
Destinations pull-down menu.
Scanner is scanning items very slowly.
● If you are scanning to edit text, the OCR program causes the 
scanner to scan more slowly, which is normal. Wait for the item 
to scan.
● Some default settings can cause the scanner to scan more 
slowly. Check the settings. See "Setting preferences" on 
page 60.
● The resolution might be set too high. Return to the default 
resolution. See "Changing resolution" on page 36.
The correct menu items do not appear in the HP PrecisionScan Pro 
software.
● If you used the ADF and then disconnected it, restart the 
software.
● If you were using the XPA, on the Scan menu, click Scanner 
Glass to scan from the glass again. 
● If you are trying to use the XPA and the XPA (Slides) or XPA 
(Negatives) commands are unavailable, restart the software 
while the XPA is connected to the scanner.
The scanner is making a loud clicking or grinding noise.
The scanner is locked. Unlock the scanner. Use your finger to flip 
the lock down to the unlocked position.