Installation the bulb: ?? Turn off the power before replacing the lamp. ?? Clean the fan and surrounding dust before replacing the lamp to avoid abnormal temperature and cause the projector to malfunction. ?? After replacing the new lamp, clear the lamp usage time. ?? After turning off the projector, wait for the cooling to complete before unplugging the power cord. ?? Avoid other objects blocking the projector, which will cause abnormal heat dissipation, so as not to affect the life of the lamp and other faults.