Chapter 5 Maintenance — Light source/temperature indicators158 - ENGLISHLight source/temperature indicatorsWhen an indicator lights upIf a problem occurs inside the projector, the light source indicators / or temperature indicator will inform you bylighting or blinking. Check the status of the indicators and manage the indicated problems as follows.Attentionf When switching off the projector to deal with problems, make sure to follow the procedure in “Switching off the projector” (x page 59).Light source indicator Light source indicator Temperature indicator Light source indicators /Indicator status Blinking in red(2 times)Blinking in red(3 times)Status The light source does not light up, or the light source turns off while the projector is in use.Cause ―Solution f Turn the switch to (x page 59), and turn it on again.Notef If the light source indicators / are still blinking after taking the preceding measures, turn the switch, and ask your dealer for repairs.Temperature indicator Indicator status Lighting in red Blinking in red(2 times)Blinking in red(3 times)Status Warm-up status Internal temperature is high(warning).Internal temperature is high(standby status).The cooling fan hasstopped.Causef Did you turn on the powerwhen the temperaturewas low (around 0 °C(32 °F))?f Is the air intake/exhaust port blocked?f Is the room temperature high? ―Solutionf Wait at least five minutesin the current status.f Install the projector in alocation with the operatingenvironment temperaturebetween 0 °C (32 °F) and45 °C (113 °F).f Remove any objects that are blocking the air intake/exhaust port.f Install the projector in a location with the operatingenvironment temperature between 0 °C (32 °F) and45 °C (113 °F).f Do not use the projector at high altitudes of 4 200 m(13 780') or higher above sea level.f Turn the switch to (x page 59), andconsult your dealer.Notef If the temperature indicator is still lit or blinking after taking the measures, ask your dealer for repair.