X Bus

Appendix A: Service Information

Digital

Warranty Service

Details concerning Warranty Service are spelled out in the Warranty section on page xx.

If you think your Digital X Bus has a problem, please do everything you can to confirm it before calling for service. Doing so might save you from the deprivation of your Digital X Bus and the associated suffering.

These may sound obvious to you, but here are some things you can check. Read on.

Troubleshooting

No Power

•Our favorite question: Is it plugged in?

•Make sure the power cord is securely seated in the IEC socket and plugged all the way into the AC outlet.

•Make sure the AC outlet is live (check with a tester or lamp).

•Is the POWER switch on? Make sure the POWER switch on the rear panel is in the ON position (up).

Bad Channel

•Is the MUTE button pushed in?

•Is the input GAIN control for the channel turned up?

•Is the fader turned up?

•Is the Input Source correctly assigned in the ASSIGN window?

•Is the signal source turned up? Make sure the signal level from the selected input source is high enough to light up some of the INPUT meter LEDs next to the channel’s fader.

•Is the channel assigned to a bus or output?

•Try the same source signal in another channel, set up exactly like the suspect channel.

Bad Output

•Is the associated level control (if any) turned up?

•Is the output source correctly assigned in the Card Setup window?

•If it’s a stereo pair, try switching them around. For example, if a left output is presumed dead, switch the left and right cords at the mixer end. If the problem stays on the left side, it’s not the mixer.

Bad Sound

•Is the input connector plugged completely into the jack?

•Is it loud and distorted? Make sure the input GAIN control for the input is set correctly. Reduce the signal level on the input source if possible.

•If possible, listen to the signal with head- phones plugged into the input source device. If it sounds bad there, it’s not the Digital X Bus causing the problem.

Noise/Hum

•Turn down each channel, one by one. If the noise disappears, it’s coming from whatever is plugged into that channel.

•Check the signal cables between the input sources and the Digital X Bus. Disconnect them one by one. When the noise goes away, you’ll know which input source is causing the prob- lem.

•Sometimes it helps to plug all the audio equip- ment into the same AC circuit so they share a common ground.

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