Optoma EP776 - Page 47

EP776 Series/EP782 Series
Condential
4-5
tion/V. Position to the inner screen.
Inspection item - 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.
Criteria - If there is noise on the screen, the product is
considered as failure product.
- If there is noise on the screen, use auto or
manul “frequency” function or “tracking” function
to adjust the screen.
- The PC mode functionally sure be workable
include support format with frequency and auto
detected functional will be workable.
2. Light Leak
Procedure - Test equipment: video generator.
- Test signal: analog 1024 x 768�60Hz Test signal: analog 1024 x 768�60Hz
- Test Pattern: gray 30 patterns
- Check if the light leaks.
* Light leak on reective edge, eyecatcher, bond-
wires and exposed metal.
Inspection item - Light leak check.
- Bright blemish (dirty).
Criteria - The pattern cannot accept the color level of the
leakage is brighter than the grey 30 pattern.
- Ref. below table
Note: The defect criteria follows TI specication.
3. Blemish (Dark)
Procedure - Test equipment: video generator.
- Test signal: analog 1024 x 768�60Hz- Test signal: analog 1024 x 768�60Hz
- Test Pattern: blue 60
Inspection item - Dark blemish check.(dirty)
Criteria - The bright blemish is unacceptable when it ap-
Gray 30
Blue 60