5Troubleshooting
If you’re having problems operating the
Symptoms
No sound from the mixer.
Cause
Mixer is not plugged in or turned on.
Channel levels are too low.
Control room level is turned down
The appropriate signal hasn’t been assigned to the control room out.
Cable is not plugged into output jack.
Headphones are not plugged into PHONE jack.
Monitor or headphone amplifier is turned off or down.
Solution
Plug in mixer and turn it on.
Turn up channel levels.
Turn up control room level.
In the master section of the mixer, be sure the right switch is selected.
Check outputs to make sure cables are plugged in securely.
Plug headphones into PHONE jack.
Turn amplifier on or up.
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| Bad cable. |
| Check all cables; substitute |
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| cables with known good ones. |
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Audio signal is distorted. |
| Channel level is too high. |
| Set channel levels using the |
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| procedure on page 16. |
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| Channel input is too high. |
| Turn down your instrument to a |
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| normal volume and then set |
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| channel levels using procedure |
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| on page 16. |
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| AUX RET level is too high. |
| Lower the level of AUX RET A |
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| or B in the master section of the |
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| mixer. |
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| MAIN MIX level is too high. |
| Turn down the MAIN MIX |
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| level control in the master |
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| section of the mixer. |
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Audio signal carries an |
| Too much |
| Engage the channel’s |
unwanted hum. |
| the mix. |
| filter by pressing the HPF |
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| switch. |
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| Interference from appliances |
| Engage the channel’s |
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| such as air conditioners. |
| filter by pressing the HPF |
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| switch. |
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