but I have the Service Manual for the DR-MH20SE, DR-MH20SEK, DR-MH20SEF, DR-MH30SE, DR-MH30SEK,
DR-MH30SEF, DR-MH30SER series
in pdf format that I am happy to share.
It includes full schematics and parts list.
I also have a raw disk image that I haven't needed to try yet. (200Mb)
and a copy of Advisor Pro 157.
My own DR-MH30 is currently undergoing a PSU capacitor replacement after suffereng the constant loading.... issue.
It now is well out of even the extended 5yr warranty I purchased, and has been repaired twice during that period.