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General| Brand | OTARI |
|---|---|
| Model | MTR-90 |
| Category | Voice Recorder |
| Language | English |
Details the MTR-90's capabilities, design, and modular construction for reliability and serviceability.
Instructs on connecting logic, mode switching, and power cables for the MTR-90 and optional Auto Locator.
Outlines procedures for powering up, threading tape, and initializing servos for transport functions.
Guides checking Remote Box transport controls, speed indicators, ready/safe switches, and record/playback functions.
Details the critical procedure for demagnetizing tape path components to prevent damage and ensure performance.
Provides steps for aligning the reproduce amplifier stages, including setting VU meters and EQ.
Guides the adjustment of sync amplifier stages, focusing on gain and EQ settings for optimal performance.
Describes the process for adjusting bias levels across all channels for proper tape recording characteristics.
Details the procedure for aligning record amplifier gain, EQ, and levels for accurate signal recording.
Explains head azimuth adjustment for phase coherency and optimal high-frequency response.
Guides adjustment of reel control circuit board trimmers for upper/lower limits and center position/gain.
Details capstan tachometer adjustment and capstan control circuit board adjustments for speed accuracy.
Covers adjustments for fast wind gain, start time, and damping to ensure proper tape winding operation.
Guides adjustment of play servo gain and damping for smooth tape playback at selected speeds.
Details the process of recording initial tracks, including tape threading, signal application, and meter adjustments.
Explains how to play back recorded tracks, including engaging safety features and selecting playback modes.
Describes Sel-Rep recording for monitoring previous tracks while recording new ones, including overdub rehearsal.
Details the technique for recording inserts (punch-ins) into existing tracks with seamless transitions.
Introduces the CB-107 Auto Locator, its microcomputer control, memory storage, and functions.
Covers returning the tape to the 00.00 mark using fast winding modes.
Describes fast winding or rewinding tape to a specified locate time.
Explains the shuttle function for replaying tape sections and rehearse.
Outlines the step-by-step procedure for converting between 16 and 24 track configurations.
Describes the "brain" of the system, coordinating transport modes like fast forward, rewind, and play.
Details the capstan motor system control, including speed regulation and tape tension.
Explains how the Reel Control board maintains constant tape tension and senses swing arm positions.
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