HP Scanjet Enterprise 7500 - Page 4

4 Care and maintenance .................................................................................................................................. 20
HP Scanner Tools Utility Maintenance tab ......................................................................................... 21
Order maintenance and scanning supplies ........................................................................................ 21
Clean the scanner glass, scanning strip, and automatic document feeder (ADF) duplex
background ......................................................................................................................................... 22
Clean the rollers ................................................................................................................................. 24
Replace the rollers ............................................................................................................................. 26
Replace the separation pad ............................................................................................................... 30
Replace the front panel ...................................................................................................................... 33
5 Troubleshooting ............................................................................................................................................ 36
Scanner errors .................................................................................................................................... 37
Basic troubleshooting tips .................................................................................................................. 38
Scanner installation troubleshooting .................................................................................................. 39
Check the cables ............................................................................................................... 39
Uninstall and then reinstall the HP Scanjet utilities ............................................................ 39
Scanner initialization or hardware problems ...................................................................................... 41
Check the USB connection ................................................................................................ 41
Check that the scanner has power .................................................................................... 42
Reset the scanner .............................................................................................................. 42
The scanner has stopped working correctly ...................................................................... 43
Scanner operation problems .............................................................................................................. 44
Scanner will not turn on ..................................................................................................... 44
Scanner keeps turning off .................................................................................................. 44
The LCD is having display issues or scanner buttons are not working as expected ......... 45
Scanner does not scan right away ..................................................................................... 45
Scanner scans only one side of a two-sided page ............................................................ 45
Scanned pages are missing at the scan destination ......................................................... 45
Scanned image is fuzzy ..................................................................................................... 45
Scanned pages are out of order at the scan destination ................................................... 46
Optimize scanning and task speeds .................................................................................. 46
The scan is completely black or completely white ............................................................. 46
Scanned images are not straight ....................................................................................... 47
Vertical white stripes appear on the printed page .............................................................. 47
Vertical colored stripes appear on the printed page .......................................................... 47
Scan files are too large ...................................................................................................... 47
Scanner buttons are not working correctly ......................................................................................... 48
Scanner paper path problems ............................................................................................................ 49
Paper jamming, skewing, misfeeds, or multiple-page feeds .............................................. 49
Scanning fragile originals ................................................................................................... 49
Paper does not feed from the scanner .............................................................................. 49
Originals are curling up in the scanner output tray. ........................................................... 50
The bottom of the scanned image is cut off ....................................................................... 50
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