If you choose to perform repairs on your own Yamaha IT then it is usually recommended to have a Workshop Manual to keep just for personal reference if you want to know techniques to take out a certain part much like the Dashboard and fit it again in the correct way.
Yamaha IT Workshop Manuals are able to offer precise diagnostic info with regards to your car or truck so if something is wrong it will help you discover what the situation is and how you can correct it. Then you are able to assess if this can be done yourself or if the job is too big you are able to make a booking for your IT in to a local repair garage.
Yamaha IT manual