Optoma EW615i, Руководство по обслуживанию, Страница: 43 / 101

Confidential
4-6
EX612/EX615/EW615i/EX612i/EX615i EX615i
4-7 PC MODE
Note: - When getting into function test, adjust the zoom ring and focus ring to guarantee the image
maximum and clearest, then start to test.
- Test signal: analog 1024 x 768
- we take EX615 for example here, others model please refer to 4-5 for details.
1. Frequency and tracking boundary
Procedure - Test equipment: video generator
- Test signal: analog 1024 x 768@60Hz
- 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.
Position/V. Position to the inner screen.
Inspection item - Eliminate visual wavy noise by Resync,
Frequency or Tracking selection.
- Check if there is noise on the screen.
- Horizontal and vertical position of the video
should be adjustable to the screen frame.
Criteria - 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”
function to adjust the screen.
- The PC mode functionally sure be workable
include support format with frequency and auto
detected functional will be workable.
General-1
Master