Roland JD-990 User Manual

Connect audio and MIDI cables to the JD-990 unit for proper operation.

Step-by-step guide on how to power on the JD-990 and connected devices safely.

Organize patches into INTERNAL, CARD, PRESET A, and PRESET B groups for easy access.

Choose specific patches from banks using the value knob and cursor buttons.

Understand how a patch is built from up to four different sounds called "Tones".

Choose the basic waveform that forms the foundation of a Tone.

Adjust the fundamental pitch of a waveform using coarse and fine controls.

Modify the tone color and characteristics using filter mode, cutoff frequency, and resonance.

Control the sound's volume over time using the TVA envelope parameters.

Step-by-step process to save edited patches to internal memory or a data card.

Edit the percussion sounds assigned to specific notes within a Rhythm Set.

Create ensembles called "Performances" by combining up to seven Patches and one Rhythm Set.

Adjust parameters like level and pan for each Part within a Performance.

Configure overall settings like tuning, LCD contrast, and MIDI parameters.

Enable or disable built-in effects (Chorus, Delay, Reverb) for the current patch or performance.

Basic explanation of sound waves, pitch, timbre, and volume.

Explains the three modes: Performance, Patch, and Rhythm Set.

Description of controls and indicators on the front of the JD-990 unit.

Details about connectors and ports on the rear of the JD-990 unit.

Explains the meaning of symbols used throughout the manual for clarity.

Overview of the JD-990's different modes: Performance, Patch, and Rhythm Set.

Configure overall settings like tuning, LCD contrast, and MIDI parameters.

Explains the different screens used for editing and playing patches.

Details parameters related to patch name, level, pan, and analog feel.

Describes the available effects (Distortion, Phaser, Spectrum, Enhancer, Chorus, Delay, Reverb).

Overview of the Play and Edit screens for rhythm sets.

Explains the Play and Edit screens for performance mode.

Covers patch selection, level, pan, pitch, and voice reserve for each part.

Configure overall settings such as tuning, LCD contrast, and MIDI parameters.

Access functions for writing, copying, initializing, and managing data.

Save edited patches, performances, or rhythm sets to memory.

Provides solutions for common problems and error messages encountered with the JD-990.

Comprehensive lists of all parameters for Patches, Rhythm Sets, and Performances.

Details MIDI message transmission and reception capabilities of the JD-990.

Technical specifications including polyphony, effects, memory, and dimensions.