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General| Polyphony | 8 voices |
|---|---|
| Keyboard | 61 keys, velocity and aftertouch sensitive |
| Synthesis Type | Sample-based synthesis |
| Storage | 3.5" floppy disk drive |
| MIDI | In, Out, Thru |
| Release Year | 1988 |
| Timbrality | 8 |
| Sequencer | 16 tracks |
| Oscillators | None (sample playback) |
| LFO | 1 LFO |
| Filter | Digital low-pass filter |
| Effects | Chorus |
| Outputs | Stereo audio outputs |
| Inputs | Stereo input |
| Display | LCD |
| Memory | 512 KB (expandable to 1.5 MB) |
Introduces the Ensoniq EPS/EPS-M Performance Sampler Keyboard service manual and its purpose.
Crucial preliminary information for understanding and servicing the EPS/EPS-M.
Covers unit navigation, keyboard/KPC, disk drive, OS, and case handling.
Explains internal communication routes and diagnostic tones for troubleshooting.
Details procedures for checking AC line voltage and measuring power supply outputs.
Introduces diagnostic flowcharts for common EPS/EPS-M issues like no LEDs or no display.
Common diagnostic issues and their likely causes, often related to the power supply.
Detailed tests for audio, MIDI, disk drive, keyboard, and other functions.
Instructions for running a burn-in test and interpreting failure modes.
Specific hardware considerations for EPS and EPS-M models, including fuses and boards.
Details error messages and updates across EPS/EPS-M operating system versions.
Summarizes OS changes, common problems, and modifications like output boost.
Guides for replacing EPS Main Board, Keypad/Display, Keyboard, Power Supply, etc.
Guides for replacing EPS-M Main Board, Control Panel, KPC Board, Power Supply, etc.
Step-by-step guide for installing the SCSI option onto the EPS.
