Service manual

ES526/EX536/EX531/CB2800/ES526L/EX536L/DS316L
Condential
4-12
Full white pattern
Full black pattern
- Follow the brightness formula to calculate
brightness values.
☼ Brightness Formula
Avg. (P1~P9)*1.1m
2
Criteria ● 1000 ANSI lumen
3. Full On/Full Off Contrast
Procedure - Full white pattern & full black pattern
- Use CL100 to measure brightness values of full
white pattern P5 & full black pattern B5
- Follow Contrast formula to calculate contrast values.
☼ Contrast Formula
P5/B5
Note: P5=center of white image
B5 = Lux of center in full black pattern.
Criteria ● 1600:1
4. Uniformity
Procedure - Full white pattern
- Use CL100 to measure brightness values of P1~P9
(see image: full white).
- Follow the Uniformity formula to calculate
average values.
☼ Uniformity Formula
JBMA Uniformity = Avg. (P1, P3, P7, P9)/P5 X100%
Criteria ● 70%