Inspection Procedure - Optoma EP739 Service Manual

4-5

Inspection Procedure

- R, G, B and white color contrast
Test Signal:1024 x 768 @ 75Hz
Test Pattern:64 RGBW scale pattern
1. Please check and ensure if each color is normal and distinguishable.
2. If not, please return the unit to repair area.
- Screen Uniformity
Test Signal:1024 x 768 @ 75Hz
Test Pattern:Full white pattern
1. Please check and ensure the unit is under the spec. (65% Minimum)
2. If not, please return the unit to repair area.
- Dead pixel (Bright pixel)
Test Signal:1024 x 768 @ 75Hz
Test Pattern:Full black pattern
1. Please check and ensure the unit is under the spec.
(Cannot accept any bright pixel)
2. If not, please return the unit to repair area.
- Dead pixel (Dark pixel)
Test Signal:1024 x 768 @ 75Hz
Test Pattern:Full white pattern
1. Please check and ensure the unit is under the spec.
(Pixel number should be smaller or amount to 5 pixels)
2. If not, please return the unit to repair area.
- Blemish (Bright)
Test Signal:1024 x 768 @ 75Hz
Test Pattern:Full black and Gray 30 patterns
1. Please check and ensure the unit is under the spec.
(The bright blemish should not be able to see under Gray 30 pattern)
2. If not, please return the unit to repair area.
4-7
EP739/EP739H/EP738
Series