Turntable Teppaz Transit - Electronic Schematic

Complete electronic schematic for the TEPPAZ Transit turntable amplifier system. This technical documentation provides the precise circuit architecture needed by technicians undertaking repair, restoration, or maintenance work. The input stage is fully documented, showing coupling capacitors (150 µF, 1000 µF), biasing resistors (220 kΩ, 470 kΩ, 10 kΩ), and the preamplifier section built around 0C70 and 0C78 tubes. The main power amplification section features dual output stages with 0C74 tubes, output transformer, and automatic shutdown circuitry clearly traced. Power supply architecture includes the 500 µF reservoir capacitor and dedicated bias circuits. A separate section details the turntable motor circuit with clutch mechanism, variable power adjustment incorporating temperature compensation, and coupling capacitors (4700 µF). All critical component values are clearly specified—load resistances (630 Ω, 4.7 kΩ, 56 Ω), filter capacitors, and coupling capacitors—providing the exact reference data needed for accurate circuit analysis, troubleshooting, and component replacement.