CLX-8640 Two Side Copies Will Not Work HELP!!!

[Guest]

We have a Samsung CLX-8640 on A Service Contract, Recently We have Replaced The Hard Drive, Main Board & Operator Pannel After doing all of these repairs the Two Sided Feature does not work. We have tried doing firmware updates and Memory Clears but still no luck.


When we do a two sided copy the document feeder pulls in the copy and copys side 1 then spits the copy out the side, It never reverses the paper to do the second side.

When the page is being printed it does everything as normal and even pulls the page back in to do the second side but it is always blank...

Please Help if you have any Ideas...

[fishleg]

Re: CLX-8640 Two Side Copies Will Not Work HELP!!!

Dual sided scanner ya know right [emoji14]? Scans both sides 1 pass. Try and print double sided if its fine swap feeder maybe.

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[EOJTech]

Re: CLX-8640 Two Side Copies Will Not Work HELP!!!

Try doing a Shading Test from service mode (Diagnostics -> Scanner Diagnostics -> Shading Test). There is a service bulletin that states that the Shading Test must be performed after ADF or main board replacement.