Envision EN9110, Service Manual

Page: 13 / 58

12
Turn the POWER-button off to on to quit from factory mode (in USER-mode, the
OSD window location was placed at the middle of the screen) Press MENU
button to activate OSD Menu or make a confirmation on desired function, Press
Left/Right button to select the function or done the adjustment.
1. Clock adjustment
Set the Chroma at pattern 63 (cross-talk pattern) or WIN98/95 shutdown mode
(dot-pattern).
Adjust until the vertical-Stripe-shadow as wide as possible or no visible.
This function is adjust the PLL divider of ADC to generate an accurate pixel clock
Example:
Hsyn = 31.5KHz Pixel freq. = 25.175MHz (from VESA spec)
The Divider number is (N) = (Pixel freq. x 1000)/Hsyn
From this formula, we get the Divider number, if we fill this number in ADC
register (divider register), the PLL of ADC will generate a clock which have same
period with above Pixel freq. (25.175MHz) the accuracy of this clock will effect the
size of screen. (This clock was called PIXEL-CLOCK)
2. Focus adjustment
Set the Chroma at pattern 63 (cross talk pattern) or WIN98/95 shut down mode
(dot-pattern).
Adjust the horizontal interference as less as possible
This function is adjusting the phase shift of PIXEL-CLOCK to acquire the right
pixel data.
If the relationship of pixel data and pixel clock not so match, we will see the
horizontal interference on screen, we only find this phenomena in crosstalk
pattern or dot pattern, other pattern the affect is very light
3. H/V-Position adjustment
Set the Chroma to pattern 1 (crosshatch pattern) or WIN98/95 full-white pattern
confirm above item 2 & 3 functions (clock & focus) was done well, if that 2
functions failed, the H/V position will be failed too. Adjust the four edges until all
four-edges are visible at the edge of screen.
4. Language function
There have 5 languages for selection, presses “MENU” to select and confirm,
press “UP” or “ DOWN” to change the kind of language (English, Deutch,
Francais, Espanol, Italian)
5. Reset function
Clear each old status of auto-configuration and re-do auto-configuration (for all
mode)
This function also recalls C2 color-temperature.
The descriptions for function control LEDS is as following list