3 May 2010 Covers: Aspire ES1-522 / ES1-521 / ES1-520. This revision: April 2015. Sign up for an Acer ID and enjoy great benefits. Open the Acer Portal app from the Start S e r v i c e M a n u a l. ES-1. Provisional Version. CONTENTS. 1) Structural Diagram - - - - - 2. 2) Block Diagram - - - - - - - - - 6. 3) Circuit Diagram - - - - - - - - 7. This page contains information about the Owner's Manual for the ES-1 from Korg.User Manual. Version 2. 1. 1 What the Package Includes. Your ES1 Emagic Synthesizer One package contains the following: • The Emagic Software CD with the