Text inside blocks in eps file NOT displayed

Question

The following code DOES NOT display the text which is inside the blocks in the eps file and this is abnormal. (see image 1 below)

When you comment either of the lines ending by %1 or %2, the code DOES display the text inside the blocks. So what's wrong? (see image 2 below)

I was unable to upload the eps file, in case someone wants to reproduce the abnormal behavior (bug?)?

It was quite difficult to isolate this code in a file of more than 1000 lines.

\documentclass[9pt]{beamer}
\mbeode<presentation> {\usetheme{Darmstadt}}
\usepackage{graphicx}
\usepackage{times}        %1

\begin{document}
\begin{frame}
$\textsc{\textbf{D}}$     %2
\begin{figure}
    \includegraphics[scale=0.2]{Schema_conducteur_1}
\end{figure}
\end{frame}
\end{document}

Answer 1

Fonts in graphics can sometimes conflict or be affected by fonts in the main document. And dvips is more picky than pdflatex. In your case I would guess that the eps doesn't embed the font it uses.