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General| Type | Cassette Player |
|---|---|
| Brand | Sony |
| Model | WM-20 |
| Signal-to-Noise Ratio | 50 dB |
| Power Supply | 2 x AA batteries |
| Output | Headphone output |
Details tape track, frequency response, and winding time.
Step-by-step guide for removing and soldering chip components.
Overview of the WM-20's internal functional blocks and their interconnections.
Procedure for adjusting the Dolby NR signal level using a test tape.
Details azimuth and tape speed adjustment procedures.
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