Yamaha EMX660 Owner's Manual - Page 17

Troubleshooting

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Troubleshooting 17 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. Please wait. When the device cools off, normal operation will resume automatically. However, The load on this device was too great, please check the following two points to prevent the and the protection circuit for the inter- problem from recurring. nal transformer has operated. Possi- If the input to this device is greater than the nominal ble reasons for the excessive load are level, lower the input to the nominal level. If the an excessive input to the device, or inap- device is not ventilated sufficiently, refer to the cau- propriate ventilation. tions given at the beginning of this manual and take appropriate measures to insure adequate ventila- tion. Sound is no longer output from the speakers. The POWER indicator is lit. Please wait. When the device cools off, normal operation will resume automatically. However, please check the following three points to prevent The load on the amplifier of this device the problem from recurring. was too great, and the protection cir- If the level setting is excessive, lower it to the nomi- cuit for the amplifier has operated. nal level. You can refer to the peak level indicators Possible reasons for the excessive load of the main section when doing so. are an excessive level setting in the If the device is not ventilated sufficiently, refer to the channel control section or main section, cautions given at the beginning of this manual and insufficient ventilation, or insufficient take appropriate measures to insure adequate ven- load impedance of the connected speak- tilation. ers. If the load impedance (including a short) is too low, refer to the chapter on connections (page 11) and change the connections so that the impedance is correct. Other Connections between devices have come loose. Other Inspect the connections, and correct any faulty connections. The device may have malfunctioned. Please contact your dealer. EMX660-Owner's Manual

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Troubleshooting
17
EMX660—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 inter-
nal transformer has operated
. Possi-
ble reasons for the excessive load are
an excessive input to the device, or inap-
propriate 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 cau-
tions given at the beginning of this manual and take
appropriate measures to insure adequate ventila-
tion.
The POWER
indicator is lit.
The load on the amplifier of this device
was too great, and the
protection cir-
cuit 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 speak-
ers.
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 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 ven-
tilation.
If the load impedance (including a short) is too low,
refer to the chapter on connections (page 11) and
change the connections so that the impedance is
correct.
Other
Connections between devices have
come loose.
Inspect the connections, and correct any faulty con-
nections.
Other
The device may have malfunctioned. Please con-
tact your dealer.