Acer P5270 Acer P5270 Projector Series Service Guide - Page 63

No Symptom 4 No Light On 5 Mechanical Noise 6 Line Bar / Line Defect 7 Image Flicker 8 Color Abnormal 9 Poor Uniformity / Shadow 10 Dead Pixel / Dust (Out of spec.) 11 Garbage Image Procedure - Ensure all connectors are securely connected and aren't broken - Check Lamp Module - Check Lamp Driver - Check LVPS - Check Main Board - Check Color Wheel - Check Fan Module - Check if the Main Board and the DMD Board are assembled properly - Check Main Board - Check DMD Board - Check DMD Chip - Do "Reset" of the OSD Menu - Ensure the Signal Cable and Source work - Clean Photo Sensor Board - Check Lamp Module - Check Color Wheel - Check DMD Board - Check Main Board - Do "Reset" of the OSD Menu - Adjust Color Wheel Index - Check Main Board - Check DMD Board - Check Color Wheel - Ensure the Projection Screen without dirt - Ensure the Projection Lens is clean - Ensure the Brightness is within spec. (Replace the Lamp if the Brightness is less than spec.) - Check Engine Module - Ensure the Projection Screen without dirt - Ensure the Projection Lens is clean - Clean DMD Chip and Engine Module - Check DMD Chip - Check Engine Module - Ensure the Signal Cable and Source work - Check Main Board - Check DMD Board Confidential 3-4 P5270/P5270 Refresh