Agilent Technologies XX3625 Service Manual page 73

Flat-Panel Display Specifications
Defect Type
Polarizer
Dot Defect
(A dot is defined as 1, 2, or 3 stuck
subpixels touching horizontally.
Subpixels are horizontal red, green,
blue triads, so these may show up as
one of 8 colors or black.)
Line Defect
Non-uniformity
Luminance
(The measurement is perpendicular
to the screen surface in both axes.)
When to Use this Procedure
This procedure should not be performed as a part of routine maintenance. Perform the procedure only
when there appears to be a problem with the display.
Scratch
Dent
Bright dot
Dark dot
Total dot
Two adjacent dots
Bright dot
Dark dot
Three or more adjacent dots
Distance between defects
Bright dot
Dark dot
Minimum
Typical
Chapter 4: Calibrating and Adjusting
To check the flat panel display (FPD)
Limit
Width ≤ 0.05 mm
Length ≤ 10 mm
φ ≤ 0.4mm
N ≤ 5
N ≤ 7
N ≤ 12
≤ 2 pairs
≤ 2 pairs
Not allowed
≥ 10 mm
≥ 10 mm
Not allowed
Check other specifications
2
160 cd/m
2
200 cd/m