Canon multipass c3000 Service Manual (en)

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• The reading image is abnormal. (Evaluation criteria: Check the copy image's faults.)
Nothing is printed.
(1) Check the connection between the contact sensor and SCNT board (JCS1).
(2) Replace the contact sensor assembly.
(3) Replace the SCNT board.
The image has vertical stripes.
(1) Clean the contact sensor's reading glass.
(2) Check the connection between the contact sensor and SCNT board (JCS1).
(3) Replace the contact sensor assembly.
The image has thick vertical stripes.
(1) Clean the contact sensor's reading glass.
(2) Make sure the document is not slanted.
(3) Check the connection between the contact sensor and SCNT board (JCS1).
(4) Replace the contact sensor assembly.
The halftone image contains black dots.
(1) Clean the contact sensor's reading glass.
(2) Check the connection between the contact sensor and SCNT board (JCS1).
(3) Re-enter the contact sensor's shading data.  See 
Page 3-6
.
(4) Replace the contact sensor assembly.
(5) Replace the SCNT board.
Part 1: Facsimile
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