Canon PIXMA MP800 Service Manual - Page 55

Since the sub-rollers usually do not contact the paper, ink mist can easily accumulate, especially during printing on smallsized paper which never contacts the sub-rollers. Skewed paper feeding 8B Print results - SG-101 When 10 sheets of - Paper feeding from the paper are set in the ASF ASF, and if they warp significantly, - 10 sheets (max.) set in the warping portions the ASF of paper get over the cover guide, not being aligned along the guide properly. - Straighten the paper. - Set 5 or less sheets of paper in the ASF. - Paper feeds at an angle. - A margin appears on printouts. 9B Print results Uneven printing at the trailing edge of paper - In the low temperature and low humidity environment Due to decrease of the friction coefficient and inaccurate print head alignment. - Perform Manual print head alignment. - Perform Bottom plate cleaning. - Uneven printing at the bottom of the paper. Print smeared 10 B Print results - When the inner cover is not completely closed. - High-density image printing When printing on Close the inner cover - Printing gets paper is done with completely. smeared. the inner cover open, the print immediately after ink is ejected on paper is scratched by the bottom of the inner cover, resulting in smeared print. Spots on a scanned image 11 A Image scanning - Glossy photo (original) When a glossy photo - Do not strongly - In the high humidity environment is strongly pressed on press the photo on the platen glass, the the platen glass. photo will stick to the - Clean the platen glass, and the stuck glass (to eliminate points are scanned as any moisture). spots. - Spots appear on the scanned image, though there is no such spots on the original document. Improper trimming in Layout print (orientation difference of an image between 12 C Display on the LCD and a the LCD printout) - Card Direct printing - Photos taken with a DoCoMo mobile phone For photos in general, both the thumbnail and the original image are in landscape. The phenomenon is left as is. However, when original images are in portrait while thumbnails are in landscape, the trimming frame shifts from the correct position in some instances. - Print result differs from what is displayed on the LCD. Improper area of - Scanning using MP Due to a bug in MP - An information - An image is cropping, or Navigator Navigator 2.0. sheet regarding the scanned at an skewed scanning - MP Navigator settings: Since the automatic phenomenon is angle. 13 A Image scanning Document type: Black and white document, or color document cropping process is incorrect, improper correction of skewed scanning is done depending on a packed with the machine in early production. - MP Navigator will be upgraded on a - Some portions of an image is not scanned. Document size: document, resulting running-change Auto detect in the skewed scanning. basis. - If the phenomenon occurs, cancel "auto detect" and select the paper 2-11