Yamaha EMX860ST Owner's Manual - Page 20

Troubleshooting

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20 Troubleshooting Troubleshooting The following table describes the possible malfunctions of this device, and the appropriate actions to be taken in each case. Problem Cause Action The POWER indicator is dark. The load on this device was too great, and the protection circuit for the internal transformer has operated. Possible reasons for the excessive load are an excessive input to the device, or inappropriate ventilation. Please wait. When the device cools off, normal operation will resume automatically. However, please check the following two points to prevent the problem from recurring. If the input to this device is greater than the nominal level, lower the input to the nominal level. If the device is not ventilated sufficiently, refer to the cautions given at the beginning of this manual and take appropriate measures to insure adequate ventilation. Sound is no longer output from the speakers. The POWER indicator is lit. The load on the amplifier of this device was too great, and the protection circuit for the amplifier has operated. Possible reasons for the excessive load are an excessive level setting in the channel control section or main section, insufficient ventilation, or insufficient load impedance of the connected speakers. Please wait. When the device cools off, normal operation will resume automatically. However, please check the following three points to prevent the problem from recurring. If the level setting is excessive, lower it to the nominal level. You can refer to the peak level indicators of the main section when doing so. If the device is not ventilated sufficiently, refer to the cautions given at the beginning of this manual and take appropriate measures to insure adequate ventilation. If the load impedance (including a short) is too low, refer to the chapter on connections (page 13) and change the connections so that the impedance is correct. Other Connections between devices have come Inspect the connections, and correct any faulty con- loose. nections. Other The device may have malfunctioned. Please contact your dealer. EMX860ST-Owner's Manual

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20
Troubleshooting
EMX860ST—Owner’s Manual
Troubleshooting
The following table describes the possible malfunctions of this device, and the appropriate actions to be taken in
each case.
Problem
Cause
Action
Sound is no
longer out-
put from the
speakers.
The POWER
indicator is
dark.
The load on this device was too great, and
the protection circuit for the internal
transformer
has operated. Possible rea-
sons for the excessive load are an exces-
sive input to the device, or inappropriate
ventilation.
Please wait. When the device cools off, normal opera-
tion will resume automatically. However, please
check the following two points to prevent the problem
from recurring.
If the input to this device is greater than the nominal
level, lower the input to the nominal level. If the
device is not ventilated sufficiently, refer to the cau-
tions given at the beginning of this manual and take
appropriate measures to insure adequate ventilation.
The POWER
indicator is lit.
The load on the amplifier of this device
was too great, and
the protection circuit
for the amplifier
has operated. Possible
reasons for the excessive load are an
excessive level setting in the channel con-
trol section or main section, insufficient
ventilation, or insufficient load imped-
ance of the connected speakers.
Please wait. When the device cools off, normal opera-
tion will resume automatically. However, please
check the following three points to prevent the prob-
lem from recurring.
If the level setting is excessive, lower it to the nomi-
nal level. You can refer to the peak level indicators of
the main section when doing so.
If the device is not ventilated sufficiently, refer to the
cautions given at the beginning of this manual and
take appropriate measures to insure adequate ventila-
tion.
If the load impedance (including a short) is too low,
refer to the chapter on connections (page 13) and
change the connections so that the impedance is cor-
rect.
Other
Connections between devices have come
loose.
Inspect the connections, and correct any faulty con-
nections.
Other
The device may have malfunctioned. Please contact
your dealer.