Yamaha MusicCast 200 Owner's Manual page 47

Problem
The unit's clock is reset.
The clock is not displayed in standby mode.
Interference from nearby electronic equipment
is producing noise.
The remote control does not work or does not
function properly.
The touch sensors on the unit cannot be
operated.
The display dims.
The display is difficult to see.
Qi/USB charging is not possible when the unit is
in standby mode.
Qi charging stops.
Charging doesn't seem to end.
Cause
Power has not been supplied to the unit for more than one week.
The Display in standby function is disabled.
The unit is too close to other electronic equipment.
The remote control may be outside its operation range.
The remote control sensor on this unit may be exposed to direct
sunlight or strong lighting such as an inverter type fluorescent
lamp.
The battery may be worn out.
There are obstacles between the sensor of this unit and the
remote control.
The child lock function is enabled.
Objects have been placed on the touch sensors.
The display's dimmer function is set to Automatic.
The display is too dark.
The Charging in standby function is disabled.
Objects are positioned near the charging pad.
The unit will temporarily stop charging when it or the mobile
device becomes too hot.
You are attempting to charge a tablet or other device that requires
more power than this unit can supply for charging.
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Solution
If the power cord has been disconnected from the electrical outlet
for more than one week, the clock may be reset. Set the clock and
alarm again ( p. 10).
Enable the Display in standby function ( p. 39)
Position the unit farther away from other electronic equipment.
Operate the remote control within its operation range ( p. 9).
Change the orientation of lighting or the unit, or location of the
unit.
Replace the battery with a new one ( p. 8).
Remove the obstacles.
Disable the child lock function ( p. 34).
Do not place objects on the touch sensors.
Adjust the display brightness ( p. 36).
Adjust display brightness in a dark place ( p. 36).
Enable the Charging in standby function ( p. 39).
Remove the objects.
Charging will resume once the temperature of the unit or mobile
device has dropped to an acceptable temperature.
These devices cannot be charged using this unit.
Troubleshooting