Yamaha A4000 Owner's Manual page 238

Installing Optional Equipment
4.
Connect the flat cable.
• Connect the flat cable from the I/O expansion board (the flat, thin cable) to the corresponding connector
on the sampler's main circuit board (marked "B" in the illustration below, "IO" on the circuit board
itself). The connector is "keyed" so that it will only go in one way.
B
5.
Insert the AIEB1 expansion board.
• Support the board as shown in the illustration below, and fasten it in to the rear panel by screwing in the
three screws (A) that you removed at Step 3 above.
6.
Connect the two red/white cables.
• First connect the 3-wire cable into the connector (CN7: 3-pin) indicated in the illustration below. (Note
that these connectors can attach in one direction only. Make sure that the direction is correct and do not
try to force the connection.)
238
Appendix
• A5000/A4000
A