Optoma HD710 Service Manual page 44

Criteria
2. Light Leak
Procedure
Inspection item
Criteria
3. Blemish (Dark)
Procedure
Inspection item
Criteria
- Check if there is noise on the screen.
- Horizontal and vertical position of the vedio
should be adjustable to the screen frame.
- If there is noise on the screen, the product is
considered as faliure 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 1280 x 720@60Hz
- Test Pattern: gray 30 patterns
- Check if the light leaks.
* Light leak on reflective edge, eyecatcher, bond-
wires and exposed metal.
- Light leak check.
- Bright blemish (dirty).
- The pattern cannot accept the color level of the
leakage is brighter than the gray 30 pattern.
- Ref. below table
Note: The defect criteria follows TI specification.
- Test equipment: video generator.
- Test signal: analog 1280 x 720@60Hz
- Test Pattern: blue 60
- Dark blemish check.(dirty)
- The bright blemish is unacceptable when it ap-
pears on blue 60 pattern.
- Ref. below table
Note: The defect criteria follows TI specification.
HD71/HD710/HD75
Gray 30
Blue 60
Confidential
4-5