Canon DR-1210C Service Manual

Also see for imageFORMULA DR-1210C: Brochure & specs Brochure & specs Brochure & specs User guide Easy start guide

5-18 COPYRIGHT © 2006 CANON ELECTRONICS INC. CANON DR-1210C FIRST EDITION FEB. 2006CHAPTER 5 TROUBLESHOOTING6. Spots and Streaks on ImageIf the reading glass surface is dirty when the flatbed scanning is used, the state of the spot onthe glass (shape and color) appears on the scanned image. In case of the feeder scanning,spots on the feed system including the feed roller etc. appear on the document or those onthe reading glass for the feeder make streaks in the feed direction on the scanned image.On the other hand, white streaks appearing on the scanned images for both flatbed andfeeder scanning are caused by dirty shading sheet in most cases. In particular, if whitestreaks appear outstanding in a slightly light area on a color image, it can be said that it iscaused by dirty shading sheet.Cause/Faultylocation Step Check item Result ActionRoller unit and separa-tion pad (for feederscanning)1 Are the surfaces clean? NO Clean or replace theroller unit and/or theseparation pad.Feed unit (for feederscanning)2 Is the feed path clean? NO Clean.NO Clean.Replace the main bodyif scratches are found orthe back surface is dirty.Reading glass 3 Are the reading glassesclean?(for both flatbed and feederscanning)YES The reading unit or theshading sheet is faulty.Replace the main body.Table 5-406