Model 206A pianos were made from 1974-1983 with the last serial number being 133144L. On back of action rail is stamped 80414047 (code interpreted as YYMMDDXXX). Suggests April 14 1980. Serial number ending in L indicates built at Logan Utah plant.
Resources for Steve GrahamService Manual
- Regulate Keyboard
- Inspect Amp
- Add Vibrato
- Add Aux Out
- Consider removing wiring from large multi-pin jacks on rear (removes shock hazard), potentially install IEC AC jack like a 200/200A
- Consider adding 4×8 speakers in piano lid
- Disassemble piano, remove action rail
- Inspect capstans
- Check for easing
- Remove each whip assembly one at a time and lubricate all 3 action centers (wood/felt/pin) with 8 parts naptha/1 part silicone. Reassemble.
- 1 broken whip – install new one (lowest note)
- Remove hammers one at a time and lubricate action centers, reassemble.
- Lube key posts with Vintage Vibe key post lube, reinstall keys, clean
- Set lost motion with capstan screws (ensures the jack accurately returns in the hammer butt on slow return of a depressed key)
- Install harp. Check that hammers hit the center of reeds while avoiding braces. Install damper rails. Re-assemble piano
- Check key height
- Adjust damper screws so all reeds are equally dampened
- Set let off with regulating screws (evens out loud/soft notes and even feel).
- Solder in components into amp board, 1/4″ aux jack and potentiometer to give the piano vibrato circuitry.