172AppendixSettingsPlaybackConnectionsContentsFront panel Display Rear panel IndexRemoteTips2 Operations cannot be performed through the remote control unitSymptom Cause/Solution PageOperations cannot be performedthrough the remote control unit.• Batteries are worn out. Replace with new batteries.• Operate the remote control unit within a distance of about 7 m from this unit and at an angleof within 30°.• Remove any obstacle between this unit and the remote control unit.• Insert the batteries in the proper direction, checking the q and w marks.• The set’s remote control sensor is exposed to strong light (direct sunlight, inverter typefluorescent bulb light, etc.). Move the set to a place in which the remote control sensor willnot be exposed to strong light.• The operation target zone does not correspond to the zone setting specified on the remotecontrol unit. Press MAIN or ZONE2 to select the zone to operate.• When using a 3D video device, the remote control unit of this unit may not function due toeffects of infrared communications between units (such as TV and glasses for 3D viewing). Inthis case, adjust the direction of units with the 3D communications function and their distanceto ensure they do not affect operations from the remote control unit of this unit.77–7–112, 120–2 Display on this unit shows nothingSymptom Cause/Solution PageDisplay is off. • Set “Dimmer” on the menu to something other than “Off”.• When the sound mode is set to PURE DIRECT, the display is off.16296