Hi Roger,
Sorry for the late response, vacation time ....
To return to your inquiry, it was our head of FMS who answered the questions for the biomedical department (yup, lucky me, :-) ). considering that you had ISO, with regards to biomedical, you should be ready for JCI. The questions asked were the regular stuff - PPM procedures, etc , you basically have to show them how you do PPM and repair. It will involve the process in how you do the work - database, schedules, tools, PPM forms and procedural list, stickers, tags, filing system, parts, follow up work, etc.
Make sure your critical equipment PPM are scheduled accordingly and done on time.
Of course, as with the other audits, its the mission and vision thing that caused me concern as i frequently forget those (possible memory deterioration due to past repeated exposure to x-ray ? , hehehe), though you are allowed to keep a copy of those in your person and read it to them.
Good luck