Acer P3250 Acer P1350 and P3250 Projector Series Service Guide - Page 60

No Symptom Procedure • Ensure the Signal Cable and Source work (If you connect multiple sources at the same time, use the "Source" button on the control panel to switch) • Ensure all connectors are securely connected and aren't broken 3 No Image • Check Main Board • Check DMD Board • Check Colour Wheel • Check DMD Chip • Check Engine Module • Ensure all connectors are securely connected and aren't broken • Check Lamp Module 4 No Light On • Check Lamp Driver • Check LVPS • Check Main Board • Check Colour Wheel 5 Mechanical Noise • Check Fan Module • Check if the Main Board and the DMD Board are assembled properly 6 Line Bar/Line Defect • Check Main Board • Check DMD Board • Check DMD Chip P3150/P3250/P3150 Refresh/P3250 Refresh Confidential 3-5