Yamaha AX-492, AX-592, AX-892 Owner's Manual page 15

Battery installation
1
3
Battery replacement
If you find that the remote control must be used closer to the
unit, the batteries are weak. Replace both batteries with new
ones.
Note
Use only AA, R6, UM-3 batteries for replacement.
Be sure the polarities are correct. (See the illustration inside
the battery compartment.)
Remove the batteries if the remote control will not be used
for an extended period of time.
If batteries leak, dispose of them immediately. Avoid
touching the leaked material or letting it come in contact with
clothing, etc. Clean the battery compartment thoroughly
before installing new batteries.
Opening and closing the control door
When using the remote control or when it is not necessary to operate controls inside the control door, close it.
To open the door
2
Remote control operation range
Remote control
sensor
Note
There should be no large obstacles between the remote
control and the unit.
If the remote control sensor is directly illuminated by strong
lighting (especially an inverter type of fluorescent lamp etc.),
it might prevent the remote control from working. In this
case, reposition the unit to avoid direct lighting.
To close the door
Within approximately
6 m (19.7 feet)
15