Optoma EX765 Service Manual page 56

4. Uniformity�
Procedure
Criteria
4-11 Others
1. Function Inspection
General
Factory Default
Display Size
Display Data Channel - The purpose of the DDC test is to verify the
(DDC)
Acoustic
- 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%
• 65% • 65% 65%
- All OSD functions must be checked for functionality.
When OSD menu is displayed, there shall be no
visible peaking, ringing, streaking, or smearing
artifacts on the screen.
- The factory settings (with appropriate centering,
size, geometry distortion, etc.) shall be displayed
upon "Recall" is selected from OSD.
- All preset modes shall expand to full screen size
using OSD Horizontal and Vertical Size controls.
DDC1/DDC2B operation of the projector and to
verify Plug & Play function.
- High pitch sound from cooling fan and color wheel is
unacceptable.
EX765/EW766/EX765W/EW766W
Full white pattern
Confidential
4-12