CLEAN BURN CB-2800 Service Manual download pdf (Page 37)

ES526/EX536/EX531/CB2800/ES526L/EX536L/DS316L

Condential

4-6

1. Frequency and tracking boundary

Procedure - Test equipment: video generator

- Test signal: analog 800 x 600 @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

icker.

- Adjust Resync or Frequency/Tracking/H Image

Shift/V Image Shift to the inner screen.

Inspection item - Eliminate visual wavy noise by Rsync, 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 “frequen-

cy” 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.

2. Light Leak

Procedure - Test equipment: video generator

- Test signal: analog 800 x 600 @60Hz

- Test pattern: Black pattern

- Check if the light leaks.

* Light leak on reective edge, eye-catcher, bond

wires and exposed metal.

Inspection item - Light leak check.

Criteria - The pattern cannot accept the color level of the

General-1

Full black

Master

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CLEAN BURN CB-2800 Service Manual Page 37