Recalibration of the document scanner
Recalibrate the document scanner if you notice that copies, items scanned to the computer, or faxes you send have black or white lines running through them.
To recalibrate the document scanner
1Clean the HP LaserJet 3100/3150 product before recalibrating it. (See “Maintenance” in the product service manual.)
2Before recalibrating the document scanner, open the document scanner and place a page that contains the black or white lines between the guides just above the contact image sensor glass. The black or white line points to a portion of the glass that requires extra attention.
3Clean the contact image sensor glass at the point indicated by the black or white line.
CAUTION
If toner is the contaminant, you might have to scrape it off of the glass. Be careful not to scratch the glass.
4Print a demonstration page by pressing VOLUME and CONTRAST simultaneously.
5Copy the demonstration page.
6If the vertical black or white line appears on the copy of the demonstration page, continue with steps 7 through 12 below.
7On the control panel, press ENTER/MENU.
8Press < once to display SERVICE, and then press ENTER/MENU.
9Use < and > to select SCAN CORRECTION, and then press
ENTER/MENU.
10Insert a blank, bright white piece of
The HP LaserJet 3100/3150 product pulls the piece of paper through and prints a calibration graph.
108 Chapter 2 – Service mode | EN |