I did not find a specific manual for that model. Same question was asked in 2012 and 2017 without an answer on FIXYA, so it is unlikely one was readily available.

Some other model manuals might be helpful to you:

http://homeappliance.manualsonline.com/manuals/mfg/janome/janome_sewing_machine_product_list.html

https://www.manualslib.com/manual/522797/Janome-Sewing-Machine.html

There were several web sites with replacement parts, but not a manual shown using https://www.google.com to search, in case you are looking for parts.