Acer PD527D Service Manual page 53

No Step
6 Screen
Uniformity
7 Light Leak
Chapter 4
Specification
Should be
compliant with
60%.(Minimum)
The unit can't ac-
cept the leakage
is brighter than
Gray 10 pattern
Procedure
- Test Signal :
1024x768@60Hz
- Test Pattern : Full White Pat-
tern & Full Black Pattern
- Please check and ensure the
unit is under the spec.
- Please check and see if it's in
normal conidtion.
- If not, please return the unit
to repair area.
*Please check and see if
there are dead pixels on DMD
Chip.
- The total number and dis-
tance of dead pixels should be
compliant with the spec.
Note:
(1) Bright Pixel:
Test Pattern: Full Black Pattern
- Please check and ensure
that the unit cannot accept any
bright pixel.
- If not, please return the unit
to repair area.
(2) Dark Pixel:
Test Pattern: Full White Pattern
- Please check and ensure that
the pixel number should be
smaller or amount to 5 pixels.
- If not, please return the unit
to repair area.
- Test Signal :
1024x768@60Hz
- Test Pattern : 32 Grays, Gray
10_HP, Gray 30_HP
(From Top to Bottom)
- Please check and see if the
light leaks.
- Follow up TI DMD Chip Spec.
Photo
48