Canon PIXMA iP4000R Service Manual - Page 30

3. FAQ (Problems Specific to the iP4000 and Corrective Actions) No. * Function Phenomenon Margin (approx. 0.3mm) 1 C Print results 2B Print results - Skewed paper feeding - Printing on the platen Condition - Paper feeding from the cassette, Photo Paper Plus Double Sided (A4), borderless printing, printing on the back side of paper - In the low temperature and low humidity environment - Plain paper - In the high temperature and high humidity environment Cause Corrective action - In the printer driver, increase the amount of extension. - Change the paper feeding method from the cassette to the auto sheet feeder. - If paper is curled, straighten it. - Try printing on the other side of paper. Variation in the top of form accuracy 3 B Print results - A5 or legal size - In the low temperature and low humidity environment - Not solved even when the number of sheets stacked in the auto sheet feeder or the cassette is reduced Due to decrease of paper feed capability in the low temperature and low humidity environment - Set the top margin to 4mm or more. Possible call or complaint - A margin appears on printouts. - Paper feeds at an angle. - Paper feeds at an angle. - Printing is performed on the platen. - The back side of paper gets smeared. - Print start position varies. 4B Print results - Skewed paper feeding - Margin - Photo Paper Plus Double Sided - 2L size (Japan only) - In the printer driver, increase the amount of extension. - Change the paper feeding method from the cassette to the auto sheet feeder. - A margin appears on printouts. - Paper feeds at an angle. Carriage lock lever dislocation - With the print head and ink tanks installed 5 C Safety during transportation - The phenomenon occurred in the freight handling test. When returning the repaired printer to the user, insert the fixing tool (A4 plain paper folded 5 times) between the main case and the carriage, and fix it with tape. [See Part 1, 4. PRINTER TRANSPORTATION] During transportation for return after repair, Ink dries, and no ink is ejected. 6A Print results Soiling on the back side of paper (lines or streaks parallel to the paper feed direction) - After continuous borderless printing of small sized paper (such as 4 x 6), when a larger sized paper (such as A4) is printed. - With Photo Paper Plus Double Sided or postcards, the phenomenon is likely to be noticeable and to be complained of by users, as printing is performed on both sides of such paper. In borderless printing, printing is performed to the size slightly larger than the paper size, and ink off the paper is absorbed by the platen's ink absorber. Absorbed ink may attach to the platen rib(s) after several dozen sheets are printed, causing soiling at the leading edge of paper or on the back side of paper. 1. Perform Bottom plate cleaning (from the printer driver) up to 3 times*1. *1: Change the paper in each Bottom plate cleaning. The cleaning can end when paper does not get any soiling. - Paper gets smeared. - The back side of paper gets smeared. 2. If soiling on the paper still remains after 3 times of Bottom plate cleaning, wipe the platen rib(s) and their surroundings with a cotton swab. Soiling on paper in automatic duplex printing (lines or streaks perpendicular to the paper feed direction) - Automatic duplex printing (Photo Paper Plus Double Sided, postcards, plain paper) On the rib(s) inside the sheet feed unit used for duplex printing, ink mist may accumulate, smearing paper. Temporary operational solution: Cancel automatic duplex printing, and manually print each side of paper. 2 - 4 - Paper gets smeared. - The back side of paper gets smeared.