Introduc On - QRS Music Technologies QRS PNO3 Installation Manual

Introduc on
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QRS is pleased that you have chosen the QRS PNO Retrofit Kit, the superb retrofit kit for auto‐
ma ng acous c pianos. This product brings a level of excellence in reproducing live performanc‐
es on the piano. It is made possible by many remarkable technical innova ons. However, in
spite of its high level of sophis ca on, this retrofit kit is easy to install and service.
Before beginning the installa on, take me to read "Make Certain the Kit Fits," to ensure that the
piano will indeed accept the kit. This kit will NOT fit into a spinet piano. Familiarize yourself with
the parts in the kit before proceeding and then let the instruc ons guide you.
All piano keys have a tendency to react differently. The key solenoids provide three adjustments:
the first adjusts the amount of plunger throw to match that of the key‐tail li , the second sets
the lost mo on between the key tail and the plunger p and the third adjusts the force of each
key solenoid.
Although the kit has been provided with enough solenoids to play 80 notes, the instrument has
been designed to support the en re 88‐note range of the modern piano. The addi onal parts
required may be purchased separately if an 88‐note installa on is desired.
The standard Pianoma on kit comes with a pedal solenoid but will also run in magic pedal mode
if the Pedal Solenoid is not present. The pedal solenoid is connected to the power supply by a 4
posi on plug. The Pedal Solenoid will ac vate the trapwork, therefore li ing the dampers off of
the strings as a real pianist would. In "Magic Pedal Mode" the key solenoids control the sustain
events by extending note dura ons to the corresponding pedal ON event.
The instrument uses rela vely low voltages supplied by an isola on transformer. Low voltages
eliminate the danger of electrical shock to the installer (Below UL limit of 41V). The electronics
are fully shielded to prevent electromagne c interference.
You will need some materials not provided with the kit to complete the installa on.
Steinway grand pianos require special Sostenuto trapwork not supplied with the standard kit.
Order QRS part number 70897
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