HP ze4200 - Manual (Page 124)

Table 5-1. LCD Guidelines
Type of Imperfection Imperfections Not Allowed
Electrical Imperfections:
Bright dots
(a)
Dark dots (a)
Mechanical Imperfections:
Discoloration
Polarizer bubbles, dents
(b)
Definitions of imperfections:
a Bright or dark dot: a subpixel (red, green, or blue dot) that is stuck on or off.
b Polarizer dent or bubble: a light spot with a darker border that appears on a lighted display and does not
change size. (In contrast, a polarizer scratch is a light line that is visible on a darker background and does
not change size.)
• 7 or more single bright dots.
• 7 or more single dark dots.
• 9 or more total (bright and dark combined) defective dots.
• Any occurrence of multiple defective dots within 15 mm.
• Any polarizer bubble, discoloration, or dent that is visible from at least
36 cm (14 in).
Service Manual Reference Information 5-3