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LG RD-JT40/41 Service Manual
37
TABLE 1. Image Quality Specification
SEQ # TEST SCREEN ACCEPTANCE CRITERIA
1 Major Dark
Blemish
Two Zone Blue 60 1. No blemish will be darker than Microsoft
Blue 60 in the Critical Zone
2.
3. No blemish will be > ½# long/diameter
2 Major Light Blemis
h
Two Zone Gray 10 1. No blemish will be lighter than Microsoft
Gray 10 in the Critical Zone
2.
3. No blemish will be > ½# long/diameter
3 Eyecatcher Gray 10 1. No eyecatcher will be lighter than
Microsoft Gray 10
Streaks Blue 60
Gray 10
White
1. No streaks
Projected Images Any screen 1. No adjacent pixels
2. No bright pixels (Active Area)
3.
4.
5.
6. No DMD window aperture shadowing on
the Active Area
7. No unstable pixels in Active Area
Notes:
1. Projected blemish numbers include the count for the shadow of the artifact in addition to the
artifact itself, so that the count usually represents a single artifact on the window.
2. No blemish shall be more than 5 inches long or have a total area of more than 5 square inches
3. During all Table 1 tests, projected images shall be inspected in accordance with the conditions
of inspection specified in Section 3.
4. The rejection basis for all cosmetic DMD defects (scratches, nicks, particles) will be the
projected image tests referenced in Table 1.
5. Any other image quality issue not specifically defined in this document shall be acceptable.
6. Black screens shall not be used as a basis for rejecting DMDs for image quality.