Marcel was kind enough to send me the scan. You can download the Manual from my downloadsite from the Manuals section.
P.S.
Will there ever come a solution for the fact that the MRC forum can't parse certain links? Even using the msx.org URL 3nc0d%6Fr I can't create a direct link to the file, which results in an error and people getting forwarded to the main entry of my downloadsite, which doesn't work well with MRC policies.