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3-2-30
2A3/4
Description
Maintenance
item No.
U091
Checking shading
Description
Performs scanning under the same conditions as before and after shading
is performed, displaying the original scanning values at nine points of the
contact glass on the touch panel.
Purpose
To check the change in original scanning values before and after shading.
The results may be used to decide the causes for fixing unevenness
(uneven density) of the gray area of an image: either due to optical
(shading or CCD) or other problems.
Also to check the causes for a white or black line appearing longitudinally.
Summary of Contents for Ri 4230
Page 3: ...SERVICE MANUAL Ri 4230 5230 ...
Page 13: ...4230 5230 S M MCA THEORY AND CONSTRUCTION SECTION I I Theory and Construction Section ...
Page 14: ...1 1 5 2A3 4 CONTENTS 1 1 Specifications 1 1 1 Specifications 1 1 1 ...
Page 100: ...4230 5230 S M MCA ELECTRICAL SECTION II II Electrical Section ...
Page 119: ......
Page 138: ......
Page 159: ...4230 5230 S M MCA III Set Up and Adjustment Section III SET UP AND ADJUSTMENT SECTION ...
Page 448: ...2A3 4 3 6 3 25 Toner scatters at the leading edge of the image See page 3 6 17 ...