Need help?Do you have a question about the Roland TR-909 and is the answer not in the manual?
General| Type | Drum Machine |
|---|---|
| Year Released | 1983 |
| Sound Generation | Analog and Digital |
| Polyphony | 12 voices |
| Sync | Din Sync |
| Tracks | 12 |
| Patterns | 96 |
| Songs | 8 |
| Sequencer | 16-step |
| Memory | 96 patterns |
| Outputs | 11 Individual Outputs |
| MIDI | In/Out |
| Sounds | Bass Drum, Snare Drum, Low Tom, Mid Tom, Hi Tom, Rim Shot, Hand Clap, Open Hi-Hat, Closed Hi-Hat, Crash Cymbal, Ride Cymbal |
| Power Supply | AC Adaptor |
| Synthesis Type | Hybrid (Analog and Digital) |
Details the TR-909's memory for rhythm patterns, banks, and tracks.
Covers tempo range, step resolution, power consumption, and physical dimensions.
Lists rear panel outputs, inputs, and optional accessories like the M-64C cartridge.
Lists components for the TR-909's exterior, including casing, knobs, buttons, and feet.
Details potentiometers, ICs, transistors, switches, and PCB assemblies used in the TR-909.
Lists the transformer, fuse holder, and various input/output jack components.
Identifies diodes, LEDs, crystals, resistor arrays, and connectors used in the TR-909.
Lists AC cord sets and wiring assemblies for different voltage requirements.
Provides technical data and logic diagrams for key integrated circuits.
Illustrates the internal circuit blocks for various drum voices on the Voicing Board.
Depicts the interconnections between the Cartridge, DIN Jack, Multi Jack, and Switch boards.
Shows the central CPU and power supply unit connections within the TR-909 architecture.
Explains the signal paths for accent and trigger data influencing voice generation.
Details how digital voice sounds are synthesized and shaped by envelopes.
Describes the specific operational details for digital cymbal voices.
Explains the core circuits (VCO, VCA, Noise) for analog drum voices.
Covers the system reset logic and the dual functions of the tape interface.
Details procedures for saving, loading, and synchronizing data using the tape interface.
Provides a procedure for restoring default factory rhythm patterns.
Lists changes made to ROM versions and hardware components over time.
Offers guidance on diagnosing and resolving common operational issues and symptoms.
Illustrates the physical layout and component placement of the Multi Jack Board.
Shows the physical layout and connections of the DIN Jack Board.
Displays the physical layout and component placement of the Power Supply Board.
Details the physical layout and connections of the Cartridge Board.
Explains how to configure MIDI channels and operational modes (Omni, Mono, Poly) on the TR-909.
Lists the MIDI note numbers assigned to each TR-909 rhythm voice.
Details the specific MIDI messages the TR-909 sends and recognizes.
Provides important notes and clarifications regarding MIDI key assignment functionality.
Introduces the concept and purpose of system exclusive messages for TR-909 data.
Explains the procedures for transferring rhythm data using system exclusive messages.
Offers essential precautions for setting up and maintaining reliable MIDI connections.
To Next Page
