EPROM chip for upgrading your Yamaha DX7IID or DX7IIFD to the last firmware version, OS v1.9. Includes chip and a chip puller tool for safely removing your old chip. Not compatible with "DX7", non IID / IIFD versions.
Install Instructions
Warning - Chip must be installed in the correct orientation. Installing backwards may damage the chip and keyboard.
1. Shut down your Yamaha and disconnect power.
2. Carefully open your Yamaha to expose the circuit board.
3. Find chip IC23 as shown in the pictures. This is the chip you need to swap. Be sure to note the orientation of the notch on the chip.
Recommended - Take a picture too, just in case you forget!
4. Pull the old chip straight out with the chip puller tool ensuring not to bend any pins.
5. Install the new chip in the same slot ensuring you have the notch pointing in the same direction.
Note - You may need to carefully bend the chip legs slightly to align them with the socket holes.
6. Reinstall the cover, power up, and enjoy
