Troubleshooting
Most troubleshooting issues can be traced to some form of pilot
error, so we'll cover the obvious first. If the microphone produces
no output whatsoever, establish that the cables are properly
connected and that none of the pins in the 7-pin cable-set are
damaged, bent or missing. This also applies to the 7-pin male
connector at the bottom of the microphone. Make sure that the
power supply is connected and set to the proper voltage. The pilot
light should illuminate when the power switch is turned on. In
addition a small ballast lamp located at the base of the microphone
should also glow dimly.
If the power supply fails to power up, check the fuse. The safety
fuse should fail only if a problem is present. If the power supply
blows a fuse, check the cable set for damage. If none is found,
make sure the fuse is of the correct type. Make certain the power
supply is set to the correct voltage for your area. If the supply
still refuses to power up, contact the factory.
If the supply and microphone indicate that power is being supplied
properly but the mic still produces no sound, make sure the
preamplifier is working properly and that the 3-pin microphone
cable is in good working order. Use another microphone to
establish that the signal path is indeed working. If this fails to
resolve the problem, contact the factory.
If the mic works but is noisy or has low output, there could be a
problem with the ribbon element or the vacuum tube. In either
case, the microphone is not user serviceable and repairs should
be directed to an authorized service center.
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Summary of Contents for R-122V
Page 31: ...Polar Pattern Frequency Response 30 ...
Page 32: ...Notes 31 ...
