Yamaha YRS-2500 Owner's Manual page 130

TROUBLESHOOTING
Troubleshooting
Refer to the chart below when this unit does not function properly. If the problem you are experiencing is not listed below or if the instruction below does not help, turn off the unit,
disconnect the AC power supply cable, and contact the nearest authorized Yamaha dealer or service center.
General
Problem
This unit does not operate The internal microcomputer has been frozen by an external electric shock
properly. (such as lightning or excessive static electricity) or by a power supply with
low voltage.
This unit fails to turn on when z
The AC power supply cable is not firmly connected to the AC wall outlet.
key is pressed, or the unit is
The internal microcomputer has been frozen by an external electric shock
turned off soon after the power
(such as lightning or excessive static electricity) or by a power supply with
has been turned on.
low voltage.
This unit is suddenly turned off. The internal temperature becomes too high and the overheat protection
circuitry has been activated.
When the Auto Power Standby function is enabled, this unit turns off
automatically in any of the following situations:
– No operations have been performed for 8 hours or more.
– Bluetooth is selected as the playback device. However, no audio has
come out from the device or no operation has been performed for 20
minutes or more.
– HDMI 1, 2, or 3 is selected as the playback device. However, the
playback device has been disconnected from the selected HDMI IN jack
for 20 minutes or more.
Bluetooth standby mode has been activated, terminating the Bluetooth
connection.
The front panel display does not The Eco function is activated.
glow.
Cause
Disconnect the AC power supply cable from the outlet and plug it again in
after 30 seconds.
Connect the AC power supply cable firmly to the AC wall outlet.
Disconnect the AC power supply cable from the outlet and plug it again in
after 30 seconds.
Wait for about 1 hour for this unit to cool down, turn it back on after
confirming an adequate amount of ventilation space and not to cover this
unit with a cloth.
Turn on the power of the unit and play back the source again. If the Auto
Power Standby function is not used, set "AUTO POWER STANDBY" to
"OFF".
Resume the Bluetooth connection using the Bluetooth device, or turn on
this unit and disable the Bluetooth standby mode.
Press the ECO key to deactivate the Eco function.
Remedy
Troubleshooting
See page
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En