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Solve hardware problems using the Yamaha YPG-225 troubleshooting guide.
The Yamaha YPG-225 is a 76-key "portable grand" piano keyboard. You will be able to tell which model you have by the number printed in dark grey to the left of the right speaker.
The YPG-225 is a "champagne gold" and silver keyboard with a flat digital display in the middle of the device. It has built-in speakers on each end. This model is no longer supported by Yamaha and has been replaced by newer models.
The YPG-225 can be easily confused with the Yamaha DGX-220 keyboard. The two are internally similar, but the DGX-220 features a silver outer casing while the YPG-225's casing is "champagne gold."