HP Designjet T2500 eMultifunction Printer series User Manual
Page 215
4.
If the problem persists, clean and calibrate the scanner as indicated in
. Check that the maintenance sheet is also clean, and that it is not damaged before
calibrating the scanner (an old or damaged maintenance sheet may cause this problem); if it is
damaged, call HP support and ask for a new maintenance sheet.
5.
If the problem persists, proceed to analyze areas 11 and 12 of the diagnostic plot across modules A to
E. In the three examples below, the top example is ideal, the middle example can be regarded as
acceptable; but, if you see something similar to the bottom example (or worse), call HP support and
report “grain in area fills”.
Small color differences between adjacent CIS modules
When scanning wide plots, sometimes slightly different colors can be seen at both sides of the junction
between two CIS modules. This issue, if present, can be easily seen by analyzing patterns 9 of the diagnostic
plot at the intersection between CIS modules. Here are some examples. Please note the black arrow
indicating the scanning direction in these examples.
Sometimes the color mismatch between adjacent modules can be enormous, showing a serious scanner
malfunction, as in the following example. If this occurs, see
Completely wrong colors on page 216
.
ENWW
Small color differences between adjacent CIS modules 205