Canon Pixma MP 640 Paper Feed Problem

  Harper Boy 07 Aug 11
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Answered

I have had this multifunction device for a while and am pretty pleased with it, apart from the heavy consumption of coloured inks even when printing only in greyscale (I believe this is a widespread issue with Canon printers). However, I now have a problem with paper feed from the rear tray. I am sure there is a mechanical problem, for which I don't blame Canon, because I accidentally dropped a biro in there without noticing! I fished it out when the machine reported a paper jam, but the rear feed hasn't worked properly since. It has always made a bit of a clatter while taking time to decide to start; now it claims there is no paper at all, even though there is. Just occasionally, it starts to feed a sheet over a single central roller, but soon stops with the paper on the skew. Cassette feed remains OK. My problem is that I have no idea how the rear feed is supposed to look when it is working properly, so I don't fancy dismantling something I don't understand. What I would really welcome is an illustration, or at least a really precise description, of what to look for when the back is off. Any advice welcome

  northumbria61 07 Aug 11

I don't have this printer but from what you describe it appears you may have damaged the paper feed mechanism (the biro)

I don't know if there is anything here that will help you - have a look and I will also begin a search for "images" for you link text

  northumbria61 07 Aug 11

Plenty to go through here link text

  Harper Boy 07 Aug 11

Thanks, Northumbria61. Yes, a lot of advice there, but sadly not enough to help me do surgery on the beast! I would like to get my hands on a service manual, but can find only ones for the MP610 or 630 - I don't know if either is mechanically similar

  northumbria61 07 Aug 11

There's a Service manual here for download but I don't know if it will link textcontain anything to solve your problem.

  northumbria61 07 Aug 11

You can also download a manual from Canon.co.uk (Support) link text

  northumbria61 07 Aug 11

"but can find only ones for the MP610 or 630" In the above link you can select the MP640 from the drop down list

  Harper Boy 08 Aug 11
Answer

Thanks - good as far as it goes, but these are just User manuals, whereas for the detail I need I should be consulting a Service Manual.

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