The service center is at 2nd floor Peninsula Plaza, head toward the Bata store and turn right and right you will see Emjay service center on the left a few shops down. It is a very very very small shop so don't expect to see anything like Sony or Canon service center, it is even smaller than the Toto booth around your neighbourhood.
Anyway, I think Kevin is really good and friendly, and technically sound as well. You will noticed straight away when you arrived at the service center that service is Emjay after thought, i.e. need to have (probably under the dealership agreement) and it is really very poorly equip so I won't blame Kevin if can only handle limited servicing at the "so called" service center.