250 Specifications

02R User’s Guide
Troubleshooting
If there is any trouble, check the situation and follow the corrective actions described below.
The power is not turned on.
Did you plug the power cord to a correct AC outlet?
Is the POWER switch ON?
No sound is produced.
Is the signal coming in from the external device?
Is the input "ON" indicator lit?
Is the input fader raised?
Is the stereo output "ON" indicator lit?
Is the stereo output fader raised?
Is the option board securely inserted?
Is the output bus assigned correctly?
Is the word clock set correctly?
Is the output in the C-R monitor section selected?
The volume level is very low.
Are the PAD switch and GAIN volume control set correctly?
Is the input fader raised?
Is the gain set too low in the equalizer section?
Are the threshold and ratio settings for the dynamics processor set correctly?
Is the [DIM] key in the C-R monitor section OFF?
Sound is distorted.
Are the PAD switch and GAIN volume control set correctly?
Is the input fader raised too high?
Is the stereo output fader raised too high?
Is the gain set too high in the equalizer section?
A pair of stereo channels does not sound in stereo.
Is the pan setting correct?
Abnormal phase
Is the phase on the input device set correctly?
The volume level of certain channels goes up and down.
Is the dynamics processor ducking set for those channels?
Scene data cannot be stored.
Is memory protect ON?
You cannot store scene data to Scene “0.”
MIDI data cannot be transmitted or received.
Does the MIDI transmit channel match the receive channel?
Is the switch for the item to be transmitted/received (Program Change, Parameter Change) turned
on?
The fader movement is not consistent.
Calibrate the faders. See “Fader Calibration” on page 215 of the User’s Guide.