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General| Type | 2-head, single compact cassette deck |
|---|---|
| Tape Speed | 4.76 cm/s |
| Track System | 4-track, 2-channel stereo |
| Heads | 1 x record/playback, 1 x erase |
| Motor | 1 x reel, 1 x capstan |
| Tape Type | Type I, CrO2, Metal |
| Frequency Response | 20 Hz to 20 kHz (Metal tape) |
| Total Harmonic Distortion | 1.0% |
| Noise Reduction | Dolby B |
| Wow and Flutter | 0.06% |
| Input | Line in |
| Output | Line out |
| Inputs | Line (RCA) |
| Outputs | Line |
| Dimensions | 430 x 250 mm |
Checks tape guide height and head base stroke using alignment gauges.
Aligns record/playback head azimuth and checks height using an azimuth tape.
Adjusts pressure roller, checks tape travel, and sets eject damper speed.
Calibrates reel motor speed and tape speed using test tapes and meters.
Specifies lubricants for tape transport mechanism parts upon replacement.
Identifies components on the Main and Tape Switch PCBs for electrical adjustments.
Step-by-step guide for tape speed, meter level, MPX filter, azimuth, and playback level calibration.
Procedures for bias, erase current, record amplifier, bias trap, record level, and frequency response adjustments.
Procedure for overall frequency response adjustment.
Adjusts playback frequency response for optimal performance at high frequencies.
Detailed parts list for the Synthesis Mechanism Assembly (Silver/Black).
Comprehensive parts list for the Mechanism Assembly (B01).
Mounting diagrams and parts for Power, LED, Timer, and Shut-off PCBs.
Mounting diagrams and parts for Dolby NR, Volume, Control, Tape, and Indicator PCBs.
Lists components and part numbers for the Main Printed Circuit Board.
Block diagrams illustrating the functionality of integrated circuits used in the unit.
Detailed schematic diagram of the Nakamichi BX-125/BX-125E circuitry.
Shows the functional blocks of the amplifier circuitry.
Illustrates the block diagram for the mechanism control system.
Presents timing charts for overall operation and mechanism control.
Displays playback and record frequency response curves.
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