Sharp DT 500 DT-500 Operation Manual - Page 54

Maintenance indicator Temperature warning indicator Normal Off Abnormal Red on (Standby) Problem The internal temperature is abnormally high. Lamp indicator Green on (Green blinks when the lamp is warming up or turning off.) Red on The lamp does not illuminate. Time to change the lamp. Red on The lamp does (Standby) not illuminate. Power indicator Green on/ Red on Green blinks (Cooling) Red blinks The power indicator blinks in red when the projector is on. Cause • Blocked air intake • Cooling fan breakdown • Internal circuit failure • Clogged air intake • The lamp is shut down abnormally. • Remaining lamp life becomes 5% or less. • Burnt-out lamp • Lamp circuit failure • The lamp unit cover is open. Possible Solution • Relocate the projector to an area with proper ventilation. (see page 8) • Take the projector to your nearest Sharp Authorized Service Center or Dealer for repair. • Disconnect the power cord from the AC outlet, and then connect it again. • Carefully replace the lamp. (See page 55.) • Take the projector to your nearest Sharp Authorized Service Center or Dealer for repair. • Please exercise care when replacing the lamp. • Securely install the cover. • If the power indicator blinks in red even when the lamp unit cover is securely installed, contact your nearest Sharp Authorized Service Center or Dealer for advice. Info • If the temperature warning indicator illuminates, and the projector enters standby mode, follow the possible solutions above and then wait until the projector has cooled down completely before plugging in the power cord and turning the power back on. (At least 10 minutes.) • If the power is turned off for a brief moment due to power outage or some other cause while using the projector, and the power supply recovers immediately after that, the lamp indicator will illuminate in red and the lamp may not be lit. In this case, unplug the power cord from the AC outlet, replace the power cord in the AC outlet and then turn the power on again. • The cooling fan keeps the internal temperature of the projector constant and this function is controlled automatically. The sound of the cooling fan may change during operation because the fan speed may change and this is not a malfunction. • Do not unplug the power cord after the projector has entered standby mode and while the cooling fan is running. The cooling fan runs for about 90 seconds. Appendix 53