211
Appendix
Appendix
No sound
●
A device is not powered on.
●
An input/output unit is not connected correctly.
●
The devices are not connected correctly.
●
The volume of a connected amp or other device is lowered.
●
A volume level setting is lowered.
• Channel fader
• MAIN fader, AUX faders
• MONITOR LEVEL knob
• PHONES LEVEL knob
• MAIN or AUX channel attenuator
●
Output patchbay settings are incorrect.
●
The MUTE ALL OUTPUTS button is turned on for a connected
input/output unit.
Sound is not being input
●
A device is not powered on.
●
An input/output unit is not connected correctly.
●
The devices are not connected correctly.
●
Input patchbay settings are incorrect.
●
The channel fader is lowered.
●
The channel is muted.
●
The channel’s MAIN switch is off.
●
The DCA fader to which the channel belongs is lowered.
The preamp of a specific channel is
not shown
●
The input is not patched in the input patchbay.
●
The input that is patched in the input patchbay does not have a
preamp.
Sound is noisy or distorted
●
The preamp gain is inappropriate
The sound will be distorted if the preamp gain is too high. The
proportion of noise will be greater if the preamp gain is too low.
●
The channel’s dynamics, EQ, etc. are overloading.
Check the overload indication or level meter in the CHANNEL
DISPLAY to see if any section is overloading. If you find a section
that’s overloading, adjust the parameters for it.
Can’t input successfully from REAC;
noise is heard
If REAC devices are connected incorrectly or if the REAC mode
setting is incorrect, it will not be possible to input from REAC, and
noise may be heard.
In this case, first check the connections between the M-400 and the
input/output units.
• Make sure that the input/output units are connected to the
correct REAC port
• Make sure that the REAC mode of the input/output units is
correct
After changing the REAC mode of an input/output unit, you
must cycle the power to that input/output unit.
Then initialize the REAC connection.
1.
Disconnect the REAC cable, and wait for about five
seconds.
2.
Reconnect the REAC cable.
You’ve forgotten the ADMIN
password
●
To clear the ADMIN password, switch on the M-400’s power
while holding down the [DISP] button in the USER section and the
[SOLO CLEAR] button in the MONITOR section.
Top panel faders do not work
●
SENDS ON FADER is turned on.
●
The M-400 is in a mode where the faders are used to control the
GEQ.
Fader touch sensitivity does not work
●
CHANNEL DISPLAY [TOUCH SELECT] is turned off.
●
The fader touch sensitivity is not adjusted appropriately.
“Adjusting the fader touch sensitivity” (p. 197)
You experience a “sticking”
sensation when operating the
faders
●
The ground is not connected (p. 43)
If the ground is not connected, the fader touch sensitivity will
not operate correctly, and the fader motor may malfunction
when you operate a fader.
●
The fader touch sensitivity is not working correctly
Depending on the environment in which you’re using the M-
400, the fader touch sensitivity may not operate correctly,
possibly causing the fader motor to malfunction when you
operate a fader.
If this occurs, use the M-400 with the touch sensitivity set to 0
(p. 197) so that touch sensitivity is disabled.
Troubleshooting
Overall operation
M-400_v15_e.book 211 ページ ２００８年６月２０日 金曜日 午後４時５分
