Chapter 5 Maintenance — Light source/temperature/filter indicatorsENGLISH - 187Temperature 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?f Is the filter indicator lit?―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)*1 .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)*1, and ambient humidity between 10 %and 80 % (no condensation).f Clean or replace the air filter unit. (x page 188)f Turn the switch to (x page 63), andconsult your dealer.*1 The operating environment temperature should be between 0 °C (32 °F) and 40 °C (104 °F) if the projector is used at an altitude between 1 400 m(4 593') and 4 200 m (13 780') above sea level. When the [PROJECTOR SETUP] menu → [OPERATION SETTING] → [OPERATING MODE] isset to [ECO], [LONG LIFE1], [LONG LIFE2], or [LONG LIFE3], the operating environment temperature should be between 0 °C (32 °F) and 40 °C(104 °F), regardless of the altitude. When the Smoke Cut Filter is used, the operating environment temperature should be between 0 °C (32 °F) and35 °C (95 °F).When the [PROJECTOR SETUP] menu → [OPERATION SETTING] → [OPERATING MODE] is set to [ECO], [LONG LIFE1], [LONG LIFE2], or[LONG LIFE3], the projector cannot be used at an altitude of 2 700 m (8 858') or higher above sea level. When the Smoke Cut Filter is used, theprojector cannot be used at an altitude of 1 400 m (4 593') or higher above sea level.Notef If the temperature indicator is still lit or blinking after taking the measures, ask your dealer for repair.Filter indicator Indicator status Lighting in red Blinking in redStatus The filter is clogged.The temperature inside or outside the projector is abnormally high.The air filter unit is notattached.Cause f Is the air filter unit dirty? f Is the air intake/exhaustport blocked?f Is the projector used atan altitude of 4 200 m(13 780')*1 or higherabove sea level?f Is the air filter unitattached?Solution f Clean or replace the airfilter unit. (x page 188)f Remove any objects thatare blocking the air intake/exhaust port.f Do not use the projectorat an altitude of 4 200 m(13 780')*1 or higherabove sea level.f Attach the air filter unit.*1 When the [PROJECTOR SETUP] menu → [OPERATION SETTING] → [OPERATING MODE] is set to [ECO], [LONG LIFE1], [LONG LIFE2], or[LONG LIFE3], the projector cannot be used at an altitude of 2 700 m (8 858') or higher above sea level. When the Smoke Cut Filter is used, theprojector cannot be used at an altitude of 1 400 m (4 593') or higher above sea level.Notef If the filter indicator is still lit or blinking after taking the measures, ask your dealer for repair.