20. Image quality problems
20.1.6
Gradation reproduction failure
A. Typical faulty images
B. Troubleshooting procedure
Step
Section
1
Imaging unit
2
PH unit
IDC sensor
3
board/Re, /Fr
4
358
Check item
Is the outside dirty?
Is the window surface dirty?
Is the sensor dirty?
Has the problem been eliminated
through the checks of steps up to
3?
Field Service Ver. 1.0 Sep. 2008
Result
Action
YES
Clean.
YES
Clean.
YES
Clean.
Change the imaging unit.
Change the PH unit.
NO
Change the IDC sensor board.
Change the high voltage unit/1.
Change the high voltage unit/2.
A0CRF4C508DA