QRS Music Technologies PMII Installation Manual - Installa On Procedure
Installa on Procedure
25
July 2013
Install the solenoid rail so that it goes over the Sostenuto sha .
...Installing the Universal Sostenuto Assembly
A ach the small return spring to the thread‐rod so it pulls up on the actuator. You’ll have to find a conven‐
ient place above the actuator to a ach the other end of the spring.
Adjust the Sostenuto by loosening the locking screw on the swing arm to allow the main sha to spin freely
without ac va ng the Sostenuto. Swing the main sha so that the brass insert on top of the push block is
centered on the spring with the pedal in the rest posi on. Rotate the swing arm so that the piano’s Sostenu‐
to tab li er bar is about 1/16” away from damper Sostenuto tabs. Tighten the swing arm locking screw. Push
the Sostenuto pedal on the lyre and inspect the opera on of the mechanism. When the pedal is depressed
the tab li er bar should be nearly parallel with the key bed.