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Nakamichi BX-100 Service Manual

Nakamichi BX-100
29 pages
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Nakamichi
Service
Manual
Nakamichi
BX-100
BX-100E
2
Head
Cassette
Deck

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Nakamichi BX-100 Specifications

General IconGeneral
BrandNakamichi
ModelBX-100
CategoryCassette Player
LanguageEnglish

Summary

Mechanical Adjustments

Tape Guide Height Check

Check record/playback and erase head tape guide height using a small block and shims.

Head Base Stroke Check

Verify head base stroke by checking clearance between reference pin and base.

Azimuth Alignment and Height Check

Align record/playback head azimuth and check height using VTVM and test tapes.

Reel Motor Speed Adjustment

Adjust reel motor speed in play mode using a torque meter.

Tape Speed Adjustment

Adjust tape speed to 3,000 Hz using a frequency counter and test tape.

Parts Location for Electrical Adjustment

Electrical Adjustments and Measurements

Speed, Level, and Filter Adjustments

Adjustments for tape speed, meter level, and MPX filter.

Head Alignment and Playback Calibration

Alignment of record/playback head and calibration of playback level.

Playback Frequency Response Adjustment

Adjust playback frequency response, especially peaking, for gap loss compensation.

Bias, Erase, and Record Adjustments

Adjustments for bias oscillation frequency, erase current, and record level.

Record Level and Bias Calibration

Calibrate record level and bias current for different tape types (ZX, SX, EXII).

Playback Frequency Response Adjustment

Adjust playback frequency response, especially peaking, for gap loss compensation.

Dolby NR Circuit Check

Check Dolby NR IC operation and frequency response accuracy.

Schematic Diagrams

Overall Schematic Diagram

Complete schematic diagram of the Nakamichi BX-100/BX-100E.

Wiring Diagram

Block Diagrams

Timing Charts and Frequency Response

Specifications

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