$14.95

NAD 3020, 4020 Service Manual
[3020, 4020]

Product: Service Manual. For NAD 4020 FM Stereo Tuner and 3020 Stereo Amplifier, Combined Manual. This is a complete service manual (18 pages) but also includes a wealth of information in the form of service and technical bulletins for mods, corrections, performance or stability improvements, etc (27 pages). See list below:

Covers/Contents:

    Service Manual:
      Specifications
      Inside view of unit
      Block Diagram
      4020 Alignment & dial cord stringing
      3020 Alignment
      4020 Assembly diagram
      3020 Assembly diagram
      4020 PCB parts location & wiring diagram
      3020 PCB parts location & wiring diagram
      4020 Circuit diagram
      3020 Circuit diagram
      Packing diagram
      Parts List (4020)
      Parts List (3020)
    Service and Technical Bulletins
      3020 Production Changes
      3020 VLF oscillation
      3020 Slew Rate
      4020 Fusing & Illumination
      3020 Phono preamp overload margin @ 20kHZ
      3020 High frequency oscillation
      3020 20HZ THD in Normal-In
      3020 Amplifier heating & idle current adj
      3020 Input coupling caps
      All models: input/output jacks
      4020 Drops out of stereo
      3020 Headphone volume
      3020 Parasitic oscillation, instability
      3020 with external power amp
      Addendum (frequency response)
      4020/4020A Fuses
      3020 Output transistors shorting
      3020 Rear panel labeling incorrect
      3020 Hum


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