Page layout problem while converting Fm book to PDF

HI,

When i try to convert FM book to pdf, some sort of design are displayed on the main topic pages or chapter pages in the whole document.

However, when i convert the other Fm documents to pdf, these designs on the header n footer doenot appear.

Please provide a proper solution for the same.

PFA image, in which red mark shows the design which appear in pDF file.

Thanks,

Nutan