Optoma EX762 Service Manual page 38

For EW762
Order Symptom
 Bright pixel ( dots)
2 Dark pixel(dots)
3 Unstable pixel (dots)
4 Adjacent dark pixel (dots)
5 Dark blemish (Dirty)
6 Bright blemish (Dirty)
7 Bright dots on frame
4-4-2 Burn-In Test
- Temperature: 15°C~35°C
- Circumstance brightness: Normal environment
- Screen size: No concern
- Display mode: ECO mode
After repairing each unit, it should be Burn-in (refer to the below table).
Symptom
Normal repair
NFF
Auto shutdown
- Get into Burn-In Mode
* Cycle setting is based on the defect symptoms. ie: If it is NFF, the burn-in time is 4 hours. You
have to set the lamp on for 50 min. and lamp off for 10 min for 4 cycles.
Note: Please make sure that the hot exhaust airflows from projectors can flow towards the aisle.
Get into Service Mode (as above step 4-2)
Choose Burn In > enter
Lamp On (Min)
Lamp Off (Min)
Set Burning cycle
After setting up the time, choose ''Enter into Burn In Mode'' and press "Menu" button.
Pattern
Gray 10 pattern
White pattern
Any pattern
Any pattern
Blue 60 pattern
Gray 10 pattern
Gray 10 pattern
Burn-in Time
2 hours
4 hours
6 hours
Press right key to adjust the time (50)
Press right key to adjust the time (10)
Press right key to adjust the cycle
EX762/EW762
Criteria
A+B=0
A+B≤7
A+B=0
A+B=0
A+B≤4
(diameter <1 inch)
A+B≤4
(diameter <1 inch)
≤1
Confidential
4-3