Troubleshooting - Yamaha VL-7 Owner's Manual

Feature Reference

Troubleshooting

The VL7 is a very versatile instrument with many features and functions that affect
operation. In many cases, what appears to be a fault with the VL7 can actually be traced
to an improperly set parameter or, at the most fundamental level, to something as simple
as a bad connection.
Here's how to determine if the problem is internal (e.g. parameter settings) or
external (e.g. connections, amplifier, etc.):
Listen via Headphones. Plug a pair of headphones into the VL7 and play.
If the headphone sound is OK, then the problem is most likely in the
amplifier or mixer you are using, or the audio connection cables.
Try moving all controllers — modulation wheels, foot controlers, etc. In
some cases extreme controller settings can cause unexpected sound or
pitch ... or even no sound at all.
Try selecting different voices. If the problem occurs only on one voice
then the voice parameters are most likely at fault. If the problem occurs on
all voices then a utility parameter should be suspected.
The following are some common problems and probable causes:
Appendix
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