Yamaha A3000 Owner's Manual - Page 318

Installing the AIEB1 I/O Expansion Board Installing the AIEB1 I/O Expansion Board The optional AIEB1 Input/Output expansion board adds digital I/O (both optical and coaxial formats) and six assignable outputs to the A3000. For information about the board's connectors and general board setup, refer to information elsewhere in this manual (22 to 26). Important Before performing the installation, please read precautions "Handling and Installation of Options," found at the beginning of this manual. Procedure 1. Be sure that you have the following at hand before starting the installation. • A3000 main unit • AIEB1 I/O expansion board Confirm that there are 3 cables extending from the board. • Phillips screwdriver Magnetic-tipped screwdriver is recommended. • Workbench Please carry out all work on a stable workbench or table. Spreading a cloth over the work surface will help prevent scratching. • Gloves: Be sure to wear gloves so that your hands are not scratched by the metal cover or other metal parts. 2. Switch off the A3000 power, and unplug the power cord from the wall outlet. 3. Remove the screws holding the A3000 top cover in place. Set the A3000 upside down on the workbench and unscrew the 6 screws along the sides of the bottom (see drawing). Then turn the A3000 right side up again and unscrew the 3 screws along the top. Then unscrew the 5 screws holding the cover to the rear panel. 316 Appendix