via this Reverb listing
"The Juno-106 synthesizer was Roland’s successor to the Juno-60 and was first released in 1984. It was one of Roland’s first synthesizers to include MIDI and the patch memory was expanded to 128 patches over the 56 available on the Juno-60.The synth is polyphonic with 6 voices and 1 digital controlled oscillator per voice. It has a chorus effect to fatten up the sound and by pressing both the Poly 1 and 2 switches at the same time, the synth can be played in monophonic unison mode with all 6 voices playing on every key pressed. It has a non-resonant high pass filter and a resonant low-pass filter.
It’s easy to program and remains a popular synth to this day.
This unit was fully serviced in Oct 2021 at Bell Tone Synth Works and at that time, all 6 voice chips were replaced with Analogue Renaissance voice chips. In addition, they performed the following services:
Replace 3 electrolytic smoothing capacitors in power supply, reflow solder on power transistors/regulators, adjust power supply rail voltages
Re-solder output board jacks, cleaned output level switch and tuning pot.
Clean volume pot, portamento pot and pitch bend pot.
Replace old soldered-in patch memory battery with new battery in battery holder for easy replacement in the future; reload sounds.
Calibrate all parameters to Roland specs.
Replace 2-prong Japanese power cable connector with standard 3-prong IEC C14
Replace all panel button tact switches, clean all sliders, replace crumbly slider dust gaskets with new ones.
Replaced (2) MN3009 BBD IC's in Chorus circuit with new Xvive MN3009s to reduce noisy wooshing
Repaired and re-centered bender pot by resoldering the wiring and re-aligning to get the bender working correctly."
