422
10
Troubleshooting Chapter 7
SYMPTOM PROBABLE CAUSE
There is no output signal Check the AC power connections to the 422.
Check input and output cables and connections.
Determine that there really is a signal coming from the source
and that it is getting to the 422.
Distortion in the output signal Check the input signal. Is it overdriving the 422 s input?
Is the incoming signal already distorted? Listen up stream
from the 422 (or manually place the unit in BYPASS mode) to
determine that you are feeding it a clean signal.
Buzz in the output
Check input and output connector wiring.
Check for ground loops between interconnected system
equipment.
Are all system components on the same AC ground?
Noise (hiss) Check input signal levels and input level control settings. The
input may be too low in level. If so, boost the signal from your
console or input source.
Is the input signal already noisy? Disconnect the inputs from
the 422 and listen for noise at the output. If the noise is gone,
then the problem is prior to the 422.
The 422 doesn t power up Consult a qualified service technician or the Symetrix factory.
or doesn t respond properly.
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