9. Test 20. Streak & Noise test.
This test is very useful if there are image quality
issues such as streaks throughout the scan. (scan
direction).
It can be determined if the streaks are: dust that are:
1) Present in the scanner (Dark streak that goes
below the average line).
2) It has been present during Scanner Maintenance
(White streak that goes above the average line).
Insert SM calibration sheet when asked.