How do you change the lightbulb in a Bernina Artista 170 Quilter's Edition?

Question

I don't actually need to change it, I think, but I need to make sure that it's tight. It's not on most of the time but it does blink on occasionally, so I know the bulb isn't blown.

Answer 1

If you think it is a loose fit or poor placing, try to push it in or twist it a little like any other bulb, careful not to damage it. Use a piece of cloth or gloves if it is possible, to avoid fingerprints that may burn in when the light bulb does start working again.

If that does not help, try to take it out, carefully twisting to get it out, or twisting half a turn and pulling, or just pulling gently if it does not twist at all.
Once you get it out you can try to clean the contacts, or even use sandpaper to roughen up the contact, sometimes it helps.

If neither works, always be gentle, and you can not get better info on-line, walk into a sewing machine shop in town the next time, bringing the machine if possible. The people there will be able to help you, or at least tell you what to do.

There are several sites with sewing machine manuals on site, but I have never been able to see the pages that deal with the light-bulbs without paying first.

This site seems to have the manual on-line, but I did not see anything about changing the light bulb:
http://sewingonline.co.uk/instructions.html

Here are some links to sites that sell manuals, the last one also has a repairs section on the site, for trouble shooting:
http://www.pfaffmachines.co.uk/pfaff_instruction_books.htm#Bernina
http://www.mastersewusa.com/info_bernina_170.html
http://www.sewusa.com/Sewing_Machine_Instruction_Manuals.htm