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985-40000-01085 Rev.A
2021-02-16
Condential, for internal use only. Not to be reproduced.
Analog 4-Voice Polyphonic Synthesizer with
37 Full-Size Keys, 4 VCOs, Classic Ladder Filter,
LFO, BBD Stereo Chorus, Distortion, 32-Step
Sequencer and Arpeggiator
Synthesizers and Samplers
POLY D
User Support Bulletin
Introduction
The unit is carefully calibrated at the factory. The performance may change over time or due to environmental changes,
and the following recalibration procedures can be used to bring it back to its factory settings. If you do not feel comfortable
doing these calibrations, then we recommend they are done by an experienced audio service technician. This is especially true
for those units that need to be opened to gain access to voltage test points and calibration potentiometers.
CAUTION: Incorrect calibration or damage to the delicate adjustment potentiometers may lead to the unit
becoming inoperable.
Note: Although re-calibration will not invalidate the warranty, any damage caused during re-calibration may invalidate
the warranty.
Equipment required
1. Guitar tuner
2. Small insulated trimmer screwdriver
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