Optoma HD82 Serivce Manual page 48

Inspection item
Criteria
2. Light Leak
Procedure
Inspection item
Criteria
3. Dead Pixel (Bright pixel)
Procedure
Inspection item
Criteria
-
Eliminate visul wavy noise by Rsync, Frequency
or Tracking selection.
- Check if there is noise on the screen.
- Horizontal and vertical position of the video
should be adjustable to the screen frame.
- If there is noise on the screen, the product is
considered as failure product.
- If there is noise on the screen, use auto or
manual "frequency" function or "tracking" func-
tion to adjust the screen.
- The PC mode functionally sure be workable
include support format with frequency and auto
detected functional will be workable.
- Test equipment: video generator.
- Test signal: analog 1920 x 1080@60Hz
- Test Pattern: full black pattern
- Check if the light leaks.
* Light leak on reflective edge, eye-catcher, bond
wires and exposed metal.
- Light leak check.
- The pattern cannot accept the color level of the
leakage is brighter than full black pattern.
- Test equipment: video generator.
- Test signal: analog 1920 x 1080@60Hz analog 1920 x 1080@60Hz
- Test Pattern: gray 10 pattern
- Bright pixel check.
- Adjacent pixel. - Adjacent pixel.
- Bright pixel is unacceptable.
- Adjacent pixel is unacceptable. - Adjacent pixel is unacceptable.
- Ref. Defect specification table.
1920 x 1080@60Hz
HD82/HD8200
Full black
Gray 10
Confidential
4-5