STUDIO REPAIR » Roland » αJUNO-2 »  Circuitry     [Image 16 of 39]  :: Jump To  
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Roland Alpha Juno-2  •  Circuitry
Intel 8032 8-bit MCU, RAM, ROM, Gate Arrays, ADC (NEC μPD7001 8-bit Serial-I/O ADC)
Roland Alpha Juno-2 - Keyboard * Partly Dismantled Keyboard Assembly

Roland Alpha Juno-2 - Keyboard * Keyboard Assembly Dismantled for Contact Cleaning

Roland Alpha Juno-2 - Main Board * JU-2 Assembly 7616110 / HS-80 Assembly 76168120

Roland Alpha Juno-2 - Main Board * JU-2 Main Board Assembly 7616110 (Revision w/o the HS-80 Assembly No 76168120 Imprint)

Roland Alpha Juno-2 - Main Board * Main PCB Soldering Side

Roland Alpha Juno-2 - Main Board * JU-2 Assembly 7616110 / HS-80 Assembly 76168120

Roland Alpha Juno-2 - Circuitry * Roland ASICs: DCO (Type RD87123), S&H (Type 7302) and VCF/VCA (Type IR3R05)

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Roland Alpha Juno-2 - Circuitry - Image by Nikolaus Riehm - Equipment courtesy of Anthony Rother
Roland Alpha Juno-2 - Circuitry * Intel 8032 8-bit MCU, RAM, ROM, Gate Array (this board revision doesn't contain a HS-80 imprint)

Roland Alpha Juno-2 - Logotype * Main Board Logotype

Roland Alpha Juno-2 - DCO * Roland 87123 Integrated DCO Circuitry

Roland Alpha Juno-2 - Circuitry * Voice's VCF/VCA Circuitry

Roland Alpha Juno-2 - D/A Converter * The Large Resistor Array RA2 in Conjunction with a NEC μPC4082 (IC9) JFET-Input Operational Amplifier forms the D/A Converter for all the Control Voltages

Roland Alpha Juno-2 - A/D Converter * NEC μPD7001 8-bit A/D Converter with Serial I/O

Roland Alpha Juno-2 - Circuitry * Capacitor Array of the 4051-based S&H Circuitry. Roland's 7302 S&H-ASIC Contains Integrated Capacitors.



 
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