Acer P5270 - XGA DLP Projector, Service Manual

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