VariQuest
®
Perfecta™ 3600STP
User’s Guide
6-33
Troubleshooting Scan and Copy Issues
Copy and Scan Quality Issues
Problem
Suggested Action
Random vertical lines.
This is one of the most common issues in sheet-fed scanners.
Usually, the vertical streaks are caused by dust particles inside the
scanner, or mis-calibration of the scanner (in these cases, the
problem can be solved). The examples show some images
suffering from vertical lines or streaks (note the black arrow
indicating the scanning direction in these examples).
1. Clean the scanner’s glass scan bars and the original to be
scanned as described in
“Clean the Scan Bars” on page 5-16
Re-boot the printer and re-scan your original.
2. If streaks remain, recalibrate the scanner as indicated in
“Calibrate the Scanner” on page 5-18
. Re-boot the scanner
and re-scan your original after calibration is completed.
3. If the streaks still remain, check the scanner’s glass scan bars
and sliders visually. If they are damaged (scratched or
broken), contact your authorized VariQuest Dealer or
VariQuest Customer Service.
Note:
Vertical streaks cannot always be solved, due to the
technological limitations of CIS technology. If the streaks remain
after the corrective actions previously described, no further action
can be taken to improve the image quality, except to buy a more
expensive CCD scanner.
