Troubleshooting - Yamaha M7CL Owner's Manual

Troubleshooting

Power does not turn on, panel LEDs
and the LCD display do not light
Sound is not input
Sound is not output
Sound is not output from headphones
or the MONITOR OUT jacks
Sound is not loud enough
Sound is distorted
Sound is output even though it is not
patched to an output channel
The volume of a specific channel rises
and falls
Operating a fader does not control the
level as you expect
Only the sound of a specific channel is
heard from the MONITOR OUT or
PHONES jack
Noise occurs from an externally
connected recorder or other device
High frequency range is attenuated
An input signal is being input, but
there's no monitor output
Not enough headroom, especially
when EQ boost is applied
Signal is delayed
Turning a MIX encoder does not
change the send level to the MIX bus
Can't save scene memory or library
data
Can't save to USB storage device
Can't transmit/receive MIDI data
When you recall a scene, some
channels/parameters are not updated
You turn on a CUE button in the EFFECT
PARAM screen, but it is automatically
defeated
264
M7CL Owner's Manual
Troubleshooting
❍ Is the M7CL's POWER switch turned on?
❍ If the power still does not turn on, contact your Yamaha dealer.
❍ Is the optional I/O card installed correctly? (→ p. 42)
❍ Is a signal being input from the external device?
❍ Is the input port patched to an input channel? (→ p. 98)
❍ Is the GAIN of the internal head amp or external head amp set to an appropriate level? (→ p. 44, 55)
❍ Is the EQ attenuator raised? (→ p. 105)
❍ Could insert be turned on even though it has not been specified correctly? (→ p. 100)
❍ Is the [ON] key indicator of the input channel lit?
❍ Is the fader of the input channel raised?
❍ Is the DCA fader assigned to that channel raised? Could MUTE be turned on?
❍ Is the optional I/O card installed correctly? (→ p. 42)
❍ Is the [ON] key indicator of the STEREO channel lit?
❍ Is an output port patched to the output channel? (→ p. 95)
❍ Could LCR be on, and the CSR value be set to 1.0? (→ p. 57)
❍ Is the [PHONES] knob or [LEVEL] knob set to an appropriate volume?
❍ Is the GAIN of the internal head amp or external head amp set to an appropriate level? (→ p. 44, 55)
❍ Is the fader of the input channel raised?
❍ Could the EQ gain be set to an extremely low setting? (→ p. 105)
❍ Could the GATE/COMP threshold or ratio be set to an extreme setting? (→ p. 108)
❍ Is the EQ attenuator raised? (→ p. 105)
❍ Is the fader of the output channel raised?
❍ Try using the various screens of the METER function to check the levels. (→ p. 153)
❍ Is the DCA fader assigned to that channel raised?
❍ Is the word clock set correctly? (→ p. 208)
❍ Is the GAIN of the internal head amp or external head amp set to an appropriate level? (→ p. 44, 55)
❍ Could the fader of the input channel be raised too high?
❍ Could the fader of the STEREO channel be raised too high?
❍ Could the EQ gain be set to an extremely high setting? (→ p. 105)
❍ Could you have assigned an input channel to direct out? (→ p. 102)
❍ Could you have assigned an output channel as the insert out? (→ p. 100)
❍ Could GATE/COMP be set to ducking? (→ p. 108)
❍ Is SENDS ON FADER selected and INPUT TO MIX FADER active in the panel?
❍ Could a [CUE] key be on?
❍ Is the word clock set correctly? (→ p. 208)
❍ Could the input signal be unsynchronized?
❍ Could oscillator or talkback be turned on? (→ p. 149, 151)
❍ Could emphasis be applied? This problem will occur if the input signal status does not match the
emphasis data. (→ p. 208)
❍ Could EQ be applied? (→ p. 105)
❍ Is the dimmer applied?
❍ Is the MONITOR C assigned even though its output port has not been connected to external device.
❍ Use the EQ attenuator function to lower the level. (→ p. 105)
❍ Check whether the delay setting for each channel is set correctly. (→ p. 95)
❍ Is the [MIX SEND] key turned on?
❍ Is the MIX [ON] key turned on?
❍ Is the MIX bus set to VARI type? (→ p. 212)
❍ If the send point is set to POST, could the fader have been lowered?
❍ Are you attempting to save the data to a read-only scene/library or a protected scene? (→ p. 125)
❍ Is the USB storage device protected?
❍ Does the USB storage device have enough free capacity to save the data?
❍ When formatting the USB storage device, format it in FAT32 or FAT16 format.
❍ Is the MIDI PORT selected correctly? (→ p. 182)
❍ Are the mode and channel selected correctly on the transmitting and receiving devices? (→ p. 182)
❍ Has an event been assigned for the program change? (→ p. 184)
❍ Could that channel or parameter be set to Recall Safe? Could Focus be turned off in the scene you
recalled? Could user level restrictions have been specified? (→ p. 135, 136, 196)
❍ This is defeated automatically when you switch screens in the display. (→ p. 171)