Marantz 2270 Restoration

  • Highlights

    All controls and switches cleaned using DeoxIT D5

    Protection-Relay replaced with Omron MY2 24VDC

    Diffuser paper replaced behind tuner scale

    Any non-working festoon lamps replaced

    All electrolytic capacitors replaced

    Set voltage adjustment to 35VDC

    Set DC offset alignment to 0VDC

    Set idle-current adjustment to 5mVDC

  • Chassis

    Qty 2 - 10000uf/80V (snap-in)

    Qty 1 - 33uf/6.3V (signal meter)

    Qty 2 - 2.2uf/250V (optional)

    View

  • P400 Tone Amplifier

    Qty 1 - 100uf/35V

    Qty 2 - 10uf/35V

    Qty 4 - 3.3uf/25V (use film)

    Qty 2 - 1uf/35V (use film)

    Qty 2 - 1uf/25V (use film)

    View

  • P700 Phono Amplifier

    Qty 1 - 100uf/50V

    Qty 2 - 22uf/6.3V tantalum (use electrolytic)

    Qty 4 - 2SC1000 transistor (use KSC1815)

    Qty 2 - 2SC458 transistor (use KSC1845)

    Qty 2 - 1S1212 diode (use one 1N4148 for each)

    Qty 1 - VD1212 diode (use two 1N4148 in series)

    View

  • P750 Power Amplifier

    Qyt 2 - 22uf/35V

    Qyt 4 - 10uf/35V

    View

  • P800 Power Supply and Protection-Relay

    Qty 1 - 470uf 63V

    Qty 1 - 470uf 16V

    Qty 2 - 330uf 50V

    Qty 1 - 220uf 10V

    Qty 1 - 47uf 16V

    Qty 1 - 10uf 50V

    Qty 1 - 3.3uf 50V

    Qty 1 - Relay Omron MY2 24VDC

    View

  • *Some voltage ratings differ from OEM

  • Marantz 2270 Documentation

    Marantz 2270 Manual

    Marantz 2270 Schematic

    Marantz 2270 Diagram