There are a few different types of piano service, such as tuning and regulation. They are also considered different areas in training. Aside from piano tuning, other types of piano work/service are less understood, hence below's brief introduction.
Tuning
Piano consists of over 200 tight strings, and their tightness changes under the influence of seasons, resulting an out of tune piano. Tuning is the procedure to re-established the desirable string tension for pitches that sounds good to human ears. As tuning only concerns the tension of the strings, any troubles experience at the keys are unrelated.
Regulation
The piano action is complex manual mechanism responsible to transforming the movement of pressing a key into swinging a hammer towards the strings.
When a piano is played for a long time, components of the action start to wear and deform, resulting a less efficient mechanism. This will affect the performance, sensitivity and touch of the keyboard, and might eventually cause malfunctions such as sticky keys. Regulation is the procedure to restore and the mechanism's efficiency, making piano playing a more pleasant experience.
Repair
When piano components are too worn out, loose or broken, repair of replacement is needed. Common repair are string replacement, center pin and regluing keytops.
Even though piano often involve simple woodworking and gluing procedure, these knowledge are not enough to repair properly. For example, new parts will have slightly different dimension, which requires regulation skills to fit them with the current condition of the piano. On the other hand, string replacement will require tuning of the new string immediately.
整音(Voicing)
The sight of a piano technician stabbing piano hammers with a needle tool seems to be an impressive one, thus many people think of voicing as hammer stabbing (needling) procedure. However, voicing includes any procedures that serve to influence the tone of a piano. Because of that, tuning and regulation can be considered part of voicing, and should be addressed before and any needling. This is because accurate tuning can bring out the true sound of a piano, while proper regulation allows piano hammers to strike the strings for the best sound. Moreover, the proper contact between piano hammers and strings is necessary for the ideal piano tone. Therefore, before any hammer altering procedure is used, we ought to bring the piano into its best shape first. As a result, voicing is the most complex procedure among different types of piano service.
清潔 (Cleaning)
鋼琴清潔就是將鋼琴內的灰塵和雜物移除。清潔和吸塵本身並不涉及專門的技術，可是清潔前必需由熟悉鋼琴結構的技師安全地將鋼琴部件拆開才能進行清潔。不同的鋼琴部件亦有個別合適和需要避免的清潔方法。清潔的同時技師可趁機會檢查和保養一些不常會觸及到的零件。若鋼琴內裏受蟲蟻損壞，技師需要更仔細清潔及檢查零年的損毀情況。因此，鋼琴的清潔還是該由技師主理。
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There are more types of piano service, which we do not currently offer.
Surface Repair and Refinishing
Since piano refinishing is a matter of appearance, it has little to do with pitch and performance. Piano refinishing is a complex subject involving very skillful work. In some way, it is more similar to furniture refinishing. There are also technicians who specialized in piano refinishing.
There are various method and material to give a piano its pleasant looks. Recent pianos are finished with thick layers of polyester. Although polyester is very durable, it is very challenging to repair once any chips or cracks develops.圖源)