I have just bought a risograph 3750. I removed the drum and put back the tray without the drum. Now I don't know how to open the tray again to place back the drum. Probably a simple question, but I really don't know the solution. The manual doesn't say anything about it, display says call service which looks strange to me as I only removed the drum and put back the tray/sledge.
how to open the drum tray
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