HP 3150 EN - Manual (Page 189)

EN Troubleshooting tools 187
6 If the vertical black or white line
appears on the copy of the
demonstration page, continue with
steps 7 through 12 below.
7 On the control panel, press E NTER /
M ENU .
8 Press < once to display Service and
press E NTER /M ENU .
9 Use the < and > keys to select Scan
Correction and press E NTER /M ENU .
10 Insert a blank, bright white piece of
letter-sized paper into the document
feeder tray. The HP LaserJet 3100/
3150 product pulls the piece of
paper through and then prints a
calibration graph.
11 Examine the calibration graph. A dip
in the calibration graph can indicate
an image defect.
Note
Dips at the ends of the calibration graph
are normal.
12 Line up the calibration graph with a
newly copied page. If the dip in the
calibration graph corresponds to the
black or white line, the contaminant
is likely internal and the contact
image sensor assembly should be
replaced.
12
10