Tannoy/Micro TM55DD turntable

How can I obtain a service manual in order to replace a defective strobe lamp on my Tannoy/Micro TM55DD turntable?
This turntable is probably a Micro Seiki rebadged for Tannoy. Check out: vinylengine.com for a possible match. Micro Seiki had some "DD" model numbers which leads me to believe you will find a match there.
Yes, it was made by Micro Seiki and that is a great suggestion.

There is also a Micro Seiki user's group on Yahoo that is very knowledgable and you might consider joining and posing your query there.