Yamaha PSR-170 Owner's Manual - Page 53

Troubleshooting Problem Possible Cause and Solution When the PSR-172/170 is turned on or off, a popping sound is temporarily produced. This is normal and indicates that the PSR-172/170 is receiving electrical power. When using a mobile phone, noise is produced. Using a mobile phone in close proximity to the PSR-172/170 may produce interference. To prevent this, turn off the mobile phone or use it further away from the PSR-172/170. The sound of the voices or rhythms seems unusual The battery power is too low. Replace the batteries. (See page 8.) or strange. There is no sound even when the keyboard is played or when a Song is being played back. Check that nothing is connected to the PHONES/OUTPUT jack on the rear panel. When a set of headphones is plugged into this jack, no sound is output. When playing back one of the Pianist styles (#081 #100), the rhythm cannot be heard. This is normal. The Pianist styles have no drums or bass - only piano accompaniment. The accompaniment of the style can only be heard when accompaniment is set to ON and keys are played in the auto accompaniment section of the keyboard. The auto accompaniment doesn't turn on, even when pressing the [ACCOMPANIMENT ON/OFF] button. Make sure the Style mode is active before using the auto accompaniment. Press the [STYLE] button to enable style operations. Not all notes are heard when playing a number of notes simultaneously. Too many keys are pressed at the same time. The PSR-172/170 is polyphonic up to a maximum of 16 notes. Playing keys in the right hand section of the keyboard does not produce any sound. When using the Dictionary function (page 41), the keys in the right hand section are used only for entering the chord root and type. The accompaniment does not sound properly. Make sure that the Accompaniment Volume (page 47) is set to an appropriate level. The Multi Pad sound is cut off or sounds unusual. The PSR-172/170 is polyphonic up to a maximum of 16 notes. If a style or song is playing back at the same time a Multi Pad is played, some notes/sounds of the Multi Pad may be omitted (or "stolen") from the accompaniment or song. The sound of the voice changes from note to note. The AWM tone generation method uses multiple recordings (samples) of an instrument across the range of the keyboard; thus, the actual sound of the voice may be slightly different from note to note. The notes shown in the music staves and keyboard diagram in the display do not match the keys actually played. When auto accompaniment is on, the display shows the specific notes of the chords you play in the auto accompaniment section of the keyboard. If you play a single finger chord, or an inversion of a chord, the corresponding chord will be appropriately displayed - even if the display does not exactly match the pressed keys. 53