Yamaha b2-Silent Bakım El Kitabı

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SILENT PIANO SERIES

b1-Silent, b2-Silent, JU109-Silent, JX113-Silent

MAINTENANCE HANDBOOK

YAMAHA

This is the service manual for the b1-Silent, b2-Silent, JU109-

Silent, JX113-Silent Pianos developed in 2006. In this series, the key

and pedal sensor systems are designed into the piano, and the tone

generator and input/output jacks have been unified into a compact

design that is incorporated into the switch box unit.

When the piano is played with its mute engaged, the key and pedal

sensors detect piano performance and relay this data to the tone

generator via jacks on the back of the switch box. The mute mech-

anism is controlled by the center pedal, which operates the shank

stopper with three wires.

Regarding maintenance, damper pedal sensor position adjustment

is now carried out using measurements, not with VR adjustment.

Since this manual mostly covers new content, please make sure

that you refer to both new and previous manuals when performing

maintenance.

Contents

Introduction ......................................................................................1

Unit Layout .......................................................................................2

Caution: When Tuning .....................................................................3

Attaching/Removing the Action ........................................................3

Silent Piano Adjustment Standards..................................................3

Some Tips on Shank Stopper Unit Motion .......................................5

Test Mode ........................................................................................6

Maintenance Mode...........................................................................7

Unit Block Diagram ..........................................................................8