Chapter 4
30
Function Troubleshooting
Color Adjust Procedure :
* Notice : PC shall run R.G.B. gray scale pattern.
1. Power on. Press Up, Up, Left button when the No Signal show on the screen.
2. Choose Display Source
3. Choose Color Wheel Index.
4. Press Left or Right button to adjust.
4
Note 1 : It may need to be used when you replace Main Board or Optical Engine
alone.
Does OSD
show up?
Start
Is KeyPad
Board OK?
No
Yes
Is Remote
Controller
OK?
Yes
Change
Main Board
Change
Key Pad Board
Can function
be adjusted?
No
Yes
Yes
No
Change
Battery
No
End
Change
Remote
Controller
No
Is Keypad
Board ok?
Change
Main Board
Yes
No
Change Key-
pad Board
Summary of Contents for PD721
Page 6: ...VI ...
Page 32: ...25 Chapter 3 Removing Engine Module Engine Module ...