Schematics

Four fold-out sheets are bound into the book at scan pages 35 through 38: a wiring diagram and a schematic for the record/reproduce electronics, then a wiring diagram and a schematic for the tape transport electronics. Each sheet below is a full-page scan at its native resolution for zooming in the browser, and its own traced vector PDF for download. The traced PDFs are searchable only in part: sheet titles, board numbers and panel labels extract from the vector text layer, but fine component designators largely do not.

MX-5050 2SD₂, QXD, ½QXD, 8SD Record/Reproduce Electronics — Wiring Diagram↑ TOP

Interconnect wiring for the record/reproduce electronics: connector pinouts (CN101 through CN116) for the line, microphone, headphone, noise-reduction remote, record/erase head and reproduce head circuits, tying together the mother board (PA-345), the two switch boards (PA-304, PA-305), the VU board (PA-401) and the VR board (PA-373). The printed title is cut off at the scan's edge right after "(AF-2", so the board number is not given here.

⤢ zoomMX-5050 2SD2, QXD, 1/2QXD, 8SD Record/Reproduce Electronics wiring diagram: connector pinouts and board interconnects for the record/reproduce electronics, full page scan of page 35

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MX-5050 QX Record/Reproduce Electronics (AF-237)↑ TOP

Five circuit blocks: the record amplifier unit (PA-371), the reproduce amplifier unit (PA-372), the bias buffer amplifier unit, the test oscillator unit (PA-379), and the sel-rep amplifier unit (PA-375).

⤢ zoomMX-5050 QX Record/Reproduce Electronics AF-237 schematic: five circuit blocks, record amplifier PA-371, reproduce amplifier PA-372, bias buffer amplifier, test oscillator PA-379, and sel-rep amplifier PA-375, full page scan of page 36

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MX-5050 2SD₂, QXD, ½QXD, 8SD Tape Transport Electronics (TD-5250D) — Wiring Diagram↑ TOP

Interconnect wiring for the tape transport electronics: head connector pinouts for the 2-, 4- and 8-channel head assemblies, the capstan and reel motor circuits, the power supply board (PA-377), the power switch board (PA-378) and the remote control unit (CR-705A).

⤢ zoomMX-5050 2SD2, QXD, 1/2QXD, 8SD Tape Transport Electronics TD-5250D wiring diagram: head connector pinouts, motor circuits and board interconnects for the tape transport electronics, full page scan of page 37

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MX-5050 QX Tape Transport Electronics (TD-5250D)↑ TOP

Two circuit blocks: the control unit (PA-316), built from TTL logic gates driving the transport's function relays, and the master oscillator and power supply unit (PA-315).

⤢ zoomMX-5050 QX Tape Transport Electronics TD-5250D schematic: two circuit blocks, control unit PA-316 and master oscillator and power supply unit PA-315, full page scan of page 38

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