Acer P5271 Acer P5271, P5271i, P5290 and P5390W Projector Series Service Guide - Page 62

No Symptom Procedure - Ensure the projection screen without dirt - Ensure the projection lens is clean 9 Poor Uniformity/ - Ensure the Brightness is within spec Shadow - Check rod alignment - Check Engine Module - Ensure the projection screen without dirt - Ensure the projection lens is clean 10 Dead Pixel/Dust (Out of spec.) - Clean DMD Chip and Engine Module - Check DMD Chip - Check Engine Module - Ensure that the signal cables and source work as well 11 Garbage Image - Check Main Board - Check DMD Board - Remote Controller a. Check Battery b. Check Remote Controller c. IR receiver Remote Con12 troller/Control Panel Failed d. Check IR Sensor Board e. Check Main Board - Control Panel a. Check FPC b. Check Keypad Board c. Check Main Board 13 Function Abnormal - Do "Reset (All data)" of the OSD Menu - Check Main Board - Ensure that the signal cables and source are work as well - Ensure that your Projector is not in "Mute" mode 14 Audio Abnormal - Check Main Board - Check Speaker P5271/P5290/P5390W/P5271i Confidential 3-