Yamaha PSS-790 Owner's Manual
![Yamaha PSS-790 Keyboard manual cover](/images/rImDUlTPGzdJedEbkfmfAXZh/thumbs/thumb175x175.webp)
To perform a factory reset on the Yamaha PSS-790, turn off the keyboard. Then, while holding down the highest white key, turn on the power. This will reset the keyboard to its original factory settings.
First, check the power adapter and ensure it is properly connected. Try using a different power outlet. If the keyboard still does not turn on, inspect the adapter and power cable for any damage, and replace if necessary.
To connect your Yamaha PSS-790 to a computer, use a MIDI interface. Connect the MIDI OUT port on the keyboard to the MIDI IN port on the interface, and then connect the interface to your computer via USB. Install any necessary drivers for the MIDI interface.
To clean your Yamaha PSS-790, use a soft, dry cloth to wipe down the keyboard. For stubborn stains, lightly dampen the cloth with water. Avoid using chemical cleaners or excessive moisture to prevent damage.
If some keys are not producing sound, it could be due to debris under the keys. Try gently cleaning the keys. If the problem persists, there may be an internal issue requiring professional repair.
To adjust the volume on the Yamaha PSS-790, use the Volume control slider located on the top panel of the keyboard. Slide it to the right to increase the volume and to the left to decrease it.
Yes, you can use headphones with the Yamaha PSS-790. Connect your headphones to the PHONES/OUTPUT jack on the back of the keyboard for private listening.
To change the instrument voice on your Yamaha PSS-790, press the VOICE button, then use the numeric keypad to enter the desired voice number. Consult the owner's manual for a list of available voice numbers.
Regular maintenance for the Yamaha PSS-790 includes keeping it clean and dust-free, checking cables for wear and tear, and ensuring it is stored in a dry place to prevent moisture damage.
To fix a sticky key on your Yamaha PSS-790, gently clean around the affected key with a soft cloth. If the key remains sticky, it may need to be disassembled and cleaned internally, which should be done by a professional technician.