Acer PD726W, Service Manual

Page: 49 / 101

43 Chapter 4
No Symptom Procedure
7 Image Flicker - Do “Reset” of the OSD Menu
- Ensure the Signal Cable and Source work as well
- 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 as well
- Check Main Board
- Check DMD Board
12 Remote Controll
or Control Panel
Failed
- Remote Control
a. Check Battery
b. Check Remote Control
c. IR Receiver
- Control Panel
a. Check FPC
b. Check Keypad
c. Check Main Board
13 Function Abnor-
mal
- Do “Reset” of the OSD Menu
- Check Main Board
- Check DMD Board