Acer H7530D Acer H7530 and H7530D Projector Series Service Guide - Page 92

5-5 Waveform Download - Hold on the "Power" button, then plug in power cord. - The Power LED flashes blue or red alternately, after about 2 seconds, the Power LED flashes blue. - Loosen the "Power" button. - After about 8 seconds, the Power LED lights red. Note: - The whole procedure will take about 8 seconds. - Waveform Download is completed. Note: - This step must be executed after Lamp Driver changed. 5-6 Restore Fan Speed A - Hold on the "Menu" button, then plug in power cord. - The Power LED flashes blue and red alternately, after about 2 seconds, the Power LED flashes blue. - Loosen the "Menu" button. - At this moment, the projector will turn on automatically, please wait for 1 minute. - Get into Service Mode to check the "Factory Fan Speed" has been restored (as picture A shows) B - The procedure is completed. Note: - If the "Factory Fan Speed" is a negative number (as picture B shows), it means that the procedure is failure, please do above steps again. - This step must be executed after changing FW, Main Board or Lamp Blower. H7530/H7530D Confidential 5-