HP ScanJet Pro 4500 User Guide - Page 7

4 Care and maintenance ...27 Test and calibrate the touch screen ...28 Clean the product ...29 Clean the scanner glass ...29 Clean the scanning strips ...30 Replace parts ...31 Replace the separation rollers and cover 31 Replace the pick up roller module ...33 Order maintenance and scanning supplies ...34 5 Solve problems ...35 Basic troubleshooting tips ...36 Test the scanner ...37 Reset the scanner ...38 Scanner installation troubleshooting ...39 Check the cables ...39 Uninstall and then reinstall the HP ScanJet drivers and tools (Windows 39 Power issues ...41 Scanner lamp stays on ...41 Check that the scanner has power ...41 Scanner will not turn on ...41 Paper jams ...42 Clear paper jams in the automatic document feeder (ADF 42 An item loaded in the scanner jams repeatedly 43 Paper feed issues ...44 Paper jamming, skewing, misfeeds, or multiple-page feeds 44 Paper does not feed from the scanner 44 Automatic document feeder (ADF) does not feed paper 44 Originals are curling up in the scanner output tray 45 Image quality problems ...46 Vertical colored stripes appear on the printed page 46 Scanned images are not straight ...46 The scanned images have streaks or scratches 46 Scanned image is fuzzy ...46 The scan is completely black or completely white 46 The bottom of the scanned image is cut off 46 Scanner operation problems ...47 Connection issues ...47 Check the USB connection 47 Check the ethernet connection 48 Check the wireless connection 48 ENWW v