Converting non-English manual pages to PDF/PostScript

I'm trying to convert manual pages containing either Japanese or Russian characters to the PDF/PostScript formats. I'm doing it with the following commands. man -Tpdf /usr/share/man/ja/man1/vim.1.gz > vim-ja.pdf man -t /usr/share/man/ja/man1/vim.1.gz > vim-ja.ps man -Tpdf /usr/share/man/ru.UTF-8/man1/vim.1.gz > vim-ru.pdf man -t /usr/share/man/ru.UTF-8/man1/vim.1.gz > vim-ru.ps These commands return a bunch of warnings of the following form. troff: :2: warning: can't find special character 'u540D' The resulting documents do not contain characters of the specified languages. Only English characters appear in the documents. How to properly convert manual pages containing non-English characters to PDF/PostScript?