Tapco SQ2 manual Appendix a Service Information, Warranty Service, Troubleshooting

Appendix A: Service Information

Warranty Service

Details concerning Warranty Service are spelled out in the Warranty section on page 19.

If you think your SQ•2 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 compressor 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 AC outlet is live (check with a tester or lamp).

•Our next favorite question: Is the POWER switch on? If not, try turning it on.

•Is the red LED above to the POWER switch illuminated? If not, make sure the AC outlet is live. If so, refer to “No Sound” below.

•Is the fuse blown? If the POWER LED on the front panel is not illuminated and you are certain that the AC outlet is live, if is possible the fuse has blown.

To remove and replace the fuse:

1.Disconnect the line cord from the IEC socket.

2.Remove the fuse drawer by prying it open with a small screwdriver. It will slide all the way out.

FUSE

3.Remove the fuse and replace it with an equivalent-type fuse:

315 milliamp slo-blo (T315 A/250 V)

Note: The same fuse is used for both 115 VAC and 230 VAC operation.

4.Replace the fuse drawer by pushing it all the way back into the IEC socket.

5.Reconnect the line cord and turn the POWER switch on.

If two fuses blow in a row, then something is wrong. See the “Repair” section on the next page to find out what to do.

No Sound

•Is the GATE THRESHOLD control turned up too high? Turn the GATE THRESHOLD all the way OFF and see if you hear anything.

•Is the signal source turned up? Make sure the signal level from the mixing console (or whatever device immediately precedes the SQ•2) is high enough to produce sound through the system.

•Are you using the SQ•2 with an insert plug in an insert jack? Make sure that you are using an insert cable, and not a mono Y-cable.

Poor sound

•Is it loud and distorted? Turn down the signal coming from the mixer or signal source.

•Is the input connector plugged completely into the jack? Make sure all connections are good and sound.

•Switch the CHAN IN/OUT switch in and out to compare the sound with the compressor in the signal path and out of the signal path. This can help determine if the problem is with the SQ•2 or elsewhere in the system.

Noise/Hum

•Check the signal cable between the mixer and the SQ•2. Make sure all connections are good and sound.

•Make sure the signal cable is not routed near AC cables, power transformers, or other EMI-inducing devices.

•Is there a light dimmer or other SCR-based device on the same AC circuit as the SQ•2? Use an AC line filter, or plug the SQ•2 into a different AC circuit.

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