HP Scanjet Enterprise 7500/Flow 7500 - User Guide

Order maintenance and scanning supplies ........................................................................................ 19
Clean the scanner glass, scanning strip, and automatic document feeder (ADF) duplex
background ......................................................................................................................................... 20
Clean the rollers ................................................................................................................................. 21
Replace the rollers ............................................................................................................................. 23
Replace the separation pad ............................................................................................................... 26
Replace the front panel ...................................................................................................................... 29
5 Troubleshooting ............................................................................................................................................ 33
Scanner errors .................................................................................................................................... 33
Basic troubleshooting tips .................................................................................................................. 34
Scanner installation troubleshooting .................................................................................................. 35
Check the cables ............................................................................................................... 35
Uninstall and then reinstall the HP Scanjet utilities ............................................................ 35
Scanner initialization or hardware problems ...................................................................................... 36
Check the USB connection ................................................................................................ 36
Check that the scanner has power .................................................................................... 37
Reset the scanner .............................................................................................................. 37
The scanner has stopped working correctly ...................................................................... 38
Scanner operation problems .............................................................................................................. 38
Scanner will not turn on ..................................................................................................... 39
Scanner keeps turning off .................................................................................................. 39
The LCD is having display issues or scanner buttons are not working as expected ......... 39
Scanner does not scan right away ..................................................................................... 40
Scanner scans only one side of a two-sided page ............................................................ 40
Scanned pages are missing at the scan destination ......................................................... 40
Scanned image is fuzzy ..................................................................................................... 40
Scanned pages are out of order at the scan destination ................................................... 40
Optimize scanning and task speeds .................................................................................. 41
The scan is completely black or completely white ............................................................. 41
Scanned images are not straight ....................................................................................... 41
Vertical white stripes appear on the printed page .............................................................. 41
Vertical colored stripes appear on the printed page .......................................................... 41
Scan files are too large ...................................................................................................... 42
Scanner buttons are not working correctly ......................................................................................... 42
Scanner paper path problems ............................................................................................................ 43
Paper jamming, skewing, misfeeds, or multiple-page feeds .............................................. 43
Scanning fragile originals ................................................................................................... 43
Paper does not feed from the scanner .............................................................................. 43
Originals are curling up in the scanner output tray. ........................................................... 44
The bottom of the scanned image is cut off ....................................................................... 44
iv ENWW