Pc Mode - Optoma EP720 Family Service Manual

4-6 PC MODE

1. Frequency and tracking boundry
Procedure
Inspection item
Criteria
2. Light Leak
Procedure
- Test equipment: video generator.
- Test signal: analog 800 x 600@60Hz(EP720
- Test Pattern: general-1 or master
- Check and see if the image sharpness is well-
performed.
- If not re-adjust by the following steps:
(1) Select "Frequency" function to adjust the
total pixel number of pixel clock in one line
period.
(2) Select "Tracking" function and use right or
left arrow key to adjust the value to minimize
video flicker.
- Adjust Resync or Frequency/Tracking/H. Posi-
tion/V. Position to the inner screen.
-
Eliminate visual wavy noise by Rsync, Frequen-
cy or Tracking selection.
- 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 failure product.
- If there is noise on the screen, use auto or
manual "frequency" function or "tracking" func-
tion to adjust the screen.
- Make sure the PC mode functionas well, Make sure the PC mode functionas well,
including that frequency and auto detected
function are workable.
- Test equipment: video generator.
- Test signal: analog 800 x 600@60Hz(EP720
Family) ) Family)
1024x768@60Hz(EP726
Family) ) Family)
800 x 600@60Hz(EP720
EP720 Family/EP726 Family
General-1
Master
Confidential
4-4