Canon iP4000 Service Manual - Page 31

7 B Print results Scratches on paper 8 C Print results - PP-101D, PP-101, PR-101, SG-101, etc. - Paper feeding from the cassette - Multiple number of sheets loaded - Paper is scratched. - Marks appear on printed paper. *2: Locations to clean in servicing when soiling on paper in automatic duplex printing persists: Cleaning by user: 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. cleaning was performed, and the platen ribs were cleaned with cotton swab, 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. If the phenomenon persists after conducting 1 and 2, servicing is required. Service: Wipe any soiling or dirt off from the sheet feed unit and the bottom case unit ribs*2. - Change the paper feeding method from the cassette to the auto sheet feeder. - If automatic duplex printing is performed, cancel it, and, by setting only a single sheet of paper in the auto sheet feeder, manually print each side of paper. Scratches on the PF return lever due to paper feeding from the cassette, and duplex printing path. * Occurrence level: A: The symptom is likely to occur frequently. (Caution required) B: The symptom may occur under certain conditions, but likeliness is assumed very low in practical usage. C: The symptom is unlikely to be recognized by the user, and no practical issues are assumed. 2 - 5 To the top