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5. 3. 3 CIS
NOTE
A CIS is divided into several classes according to wavelength variations of their LED.
All the 5 pieces of CIS on a certain Scanner Unit should be in the same class to assure even
image quality (brightness, color quality and etc) among image blocks.
Be sure to check which CIS class is used to the scanner before replacing to avoid class
mixing. Otherwise even image quality can not be expected.
Equipped CIS class can be identified with the label on the rear of the Scanner Unit.
(simplified procedure to check CIS class)
1. Remove Scanner Top Cover (1).
2. Push the blue levers (2) to open the Upper Unit.
(continued on the next page)
Label
1
2
2
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